Regulatory Notices
United States Federal Communication
between the earthed conductor of the DC
supply circuit and the earthing conductor. See
Installation Instructions.
Commission (FCC)
Part 15: Class A Statement. This equipment has
been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC
Rules. Test limits are designed to provide reasonable
protection against harmful interference when the
equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate
radio-frequency energy and, if not installed and used
in accordance with the instruction manuals, may
cause harmful interference to radio communications.
Operation of this equipment in a residential area is
likely to cause harmful interference, in which case the
user will be required to correct the interference at his
or her own expense.
•
This equipment shall be located in the same
immediate area (such as, adjacent cabinets or
any other equipment that has a connection
between the grounded conductor of the same
DC supply circuit and the grounding conductor,
and also the grounding connection of the DC
system.) The DC system shall not be grounded
elsewhere.
EC Mark R&TTE Directive
Polycom Inc., declares that the MGC-50 and
MGC-100 with NET-2/4/8 card is in conformity with
the following relevant harmonized standards:
EN 60950: 1992 Including Amendments 1,2,3 & 4
EN 55022: 1994
Part 68: Network Registration Number. This
equipment is registered with the FCC in accordance
with Part 68 of the FCC Rules. This equipment is
identified by the FCC registration number.
EN 50082: 1997
Following the provisions of the Council Directive
1999/EC on radio and telecommunication terminal
equipment and the recognition of its conformity.
If requested, the FCC registration Number and REN
must be provided to the telephone company.
Any repairs to this equipment must be carried out by
Polycom Inc., or our designated agent. This
stipulation is required by the FCC and applies during
and after the warranty period.
Canadian Department of Communications
This Class [A] digital apparatus complies with
Canadian ICES-003.
United States Safety Construction Details
Notice: The Industry Canada label identifies certified
equipment. This certification means that the
equipment meets telecommunication network
protective, operational and safety requirements as
prescribed in the appropriate Terminal Equipment
Technical Requirements document(s). The
Department does not guarantee the equipment will
operate to the user's satisfaction.
•
•
•
•
Unit is intended for RESTRICTED ACCESS
LOCATION.
Unit is to be installed in accordance with the
National Electrical Code.
The branch circuit overcurrent protection shall
be rated 20 A for the AC system.
Before installing this equipment, users should ensure
that it is permissible to be connected to the facilities
of the local telecommunications company. The
equipment must also be installed using an acceptable
method of connection. The customer should be
aware that compliance with the above conditions may
not prevent degradation of service in some situations.
Repairs to certified equipment malfunctions, may give
the telecommunications company causes to request
the user to disconnect the equipment.
This equipment has a maximum operating
ambient of 40°C, the ambient temperature in
the rack shall not exceed this temperature.
For DC system only:
•
•
Use 10 AWG copper conductors.
Connect to a reliably grounded 48 V DC SELV
source.
Caution: This equipment has a connection
Users should ensure for their own protection that the
Download from Www.Somanuals.com. All Manuals Search And Download.
Regulatory Notices
electrical ground connections of the power utility,
Russian Communication Certificate
telephone lines and internal metallic water pipe
system, if present, are connected together. This
precaution may be particularly important in rural
areas.
The MGC-100 and MGC-50 comply with the Russian
Ministry of Communication requirements stated in
certificate OC/1-MM-15.
Caution: Users should not attempt to make such
connections themselves, but should contact the
appropriate electric inspection authority, or
electrician, as appropriate.
Taiwan
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Guide
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
MGC-100 Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Unpacking and Positioning the MGC-100 . . . . . . . . . . . . . . . . . 2-2
Mounting the MGC-100 on a 23” Rack . . . . . . . . . . . . . . . . . . . 2-4
Workstation (PC) Directly via RS-232 (Optional) . . . . . . . 2-12
Connecting the MGC-100 to the Network . . . . . . . . . . . . . 2-13
MPI-4/8 Hardware Installation for the MGC-100 . . . . . . . . . . . 2-16
To install the MPI-4/8 Network Interface Module: . . . . . . 2-17
To install the MPI Box on Top of the MCU: . . . . . . . . . . . 2-17
MGC-50 Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Unpacking and Positioning the MGC-50 . . . . . . . . . . . . . . . . . 2-21
Mounting the MGC-50 on a Rack . . . . . . . . . . . . . . . . . . . . . . . 2-23
Connecting and Setting Up the MGC-50 . . . . . . . . . . . . . . . . . 2-26
MGC-50 Dongle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Connecting to the Power Source . . . . . . . . . . . . . . . . . . . . . 2-27
Connecting the MGC-50 to the LAN Network . . . . . . . . . . 2-28
i
Download from Www.Somanuals.com. All Manuals Search And Download.
Table of Contents
Workstation (PC) Directly via RS-232 (Optional) . . . . . . . 2-28
Connecting the MGC-50 to the IP Network . . . . . . . . . . . . 2-31
MPI-8 Hardware Installation for the MGC-50 . . . . . . . . . . . . . 2-32
First Entry IP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
IP Configuration Change on XPEK and pSOS OS . . . . . . . . . 2-35
Using a DOS Diskette with the Updated
Clocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
Information Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Hardware Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
MGC-100 Components Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
MGC-50 Components Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Main Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
MGC-50/100 Control Unit with Removable Hard Drive . . . . . 4-12
Removing the Control Unit from the MCU . . . . . . . . . . . . 4-12
Control Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
IP Configuration Change . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Hard Drive Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Inserting the Hard Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Removing the Hard Drive . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Hard Drive Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Control Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Information Highway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Powerplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Power Supply Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Power Module in the MGC-100 . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Power Module in the MGC-50 . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
ii
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Guide
Fuse/Circuit Breaker (AC Power) . . . . . . . . . . . . . . . . . . . . . . . 4-22
Alarms Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Interface Data Stream . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
ATM Network Interface Module . . . . . . . . . . . . . . . . . . . . . . . 4-34
IP and IP+ Network Interface Module . . . . . . . . . . . . . . . . . . . 4-35
Module Port Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
IP and IP+ Network Interface Module Architecture . . . . . . 4-38
The MPI-8 Network Interface Module . . . . . . . . . . . . . . . . . . . 4-39
MPI-8 Network Interface Data Stream . . . . . . . . . . . . . . . . 4-41
MPI Network Interface Module Architecture . . . . . . . . . . . 4-43
MUX Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-43
MUX Module Architecture . . . . . . . . . . . . . . . . . . . . . . . . . 4-45
MUX+ Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46
MUX+ Card Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-47
IVR/Greet & Guide Welcome Slide . . . . . . . . . . . . . . . . . . 4-48
MUX+ Port Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-48
MUX+ Participant Move Options . . . . . . . . . . . . . . . . . . . . 4-50
MUX+ Resource Report . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-51
Audio Module (Standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52
Audio Module Port Capacity . . . . . . . . . . . . . . . . . . . . . . . 4-52
Audio Module Architecture . . . . . . . . . . . . . . . . . . . . . . . . 4-54
Audio+ Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55
Audio+ Module Architecture . . . . . . . . . . . . . . . . . . . . . . . 4-56
Audio + Port Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-56
Video Module (Standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-58
iii
Download from Www.Somanuals.com. All Manuals Search And Download.
Table of Contents
Video Module Architecture . . . . . . . . . . . . . . . . . . . . . . . . 4-58
Data Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-61
standard Audio Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-67
Attaching the Music I/O Card to the Audio Module . . . . . 4-68
Enabling the Audio Message Daughter Card and
System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
MGC Unit Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Replacing the Power Supply Modules for the MGC-100
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
Appendix A: Interfaces Pin Assignment . . . . . . . . . . . . . . . .A-1
PRI Port Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
LAN PIN Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Alarms Port Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . A-2
RS-232 Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Serial Port Connectors Pin out Assignment . . . . . . . . . . . . . A-4
iv
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Guide
Cables For the MPI-8 Network Interface Module . . . . . . . .A-6
v
Download from Www.Somanuals.com. All Manuals Search And Download.
Table of Contents
vi
Download from Www.Somanuals.com. All Manuals Search And Download.
1
Before You Begin
The MGC-50 and the MGC-100 are high performance, high capacity
Multipoint Control Units (MCU) which support up to 48 ports for the MGC-
50, and 96 ports for the MGC-100. They utilize a variable port bandwidth
ranging from 56 to 1920 Kbps.
Figure 1-1: MGC 50
Figure 1-2: MGC 100
1-1
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 1 - Before You Begin
The system meets International Telecommunication Union -
Telecommunication Standardization Sector, (ITU-T, formerly CCITT)
standards for multipoint multimedia bridging devices, and meets ETSI
standards for telecommunication products. The MGC-100 DC also meets the
NEBS Compliant Standard (when so ordered) for our clients based in the
United States.
The flexible architecture in the system is designed to accommodate users’
changing multipoint needs. This system utilizes a modular “universal slot”
platform that allows the formation of different configurations based on users’
individual port capacity and functionality requirements.
1-2
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
MGC Unit Main Features
The MGC unit offers the following features:
•
Supports a large number of ports (48 for the MGC-50, 96 for the MGC-
100) running at 128 Kbps
•
Universal slots, telco grade high availability with hot-swappable
modules, redundancy, on-line upgrading and dynamic resource
allocation
•
•
•
Support for standard network interfaces (ISDN, ATM, T1-CAS, LAN
and V.35 serial) for the easy integration of conference elements into
external network management and billing systems
Support for up to 16 operator workstations (PCs) connected to either a
local or remote MCU; each operator workstation can be connected to
several MGC units
Multirate conferencing and Transcoding (audio and video, including
high bit rate video and data bit rate conversion)
•
•
•
•
•
•
Channel aggregation according to H.221, BONDING and Multirate (H0)
Automatic rate detection upon endpoint connection to the conference
H.320/H.323 video, T.120 data and Greet and Guide conferencing
Enhanced Continuous Presence (multi-image video)
IVR (Interactive Voice Response)
Windows 95®/Windows 98®/Windows NT®/Windows 2000®/
Windows XP® based operator station
•
•
•
•
Multiple operators per conference
Multiple conferences and MCUs per operator
TCP/IP - LAN - Internet access
Supports serial communication (V.35/RS-530/RS-449) (optional)
1-3
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 1 - Before You Begin
MGC-50/MGC-100 Specifications
Table 1-1 lists the specifications of the MGC-50 and the MGC-100 units.
Table 1-1: MGC Specifications
Physical
MGC-50
MGC-100
MGC-100
NEBS
Height
Width
16”
16”
21”
15”, 19” with
mounting plate
23” with
mounting
plates, 19”
with unit at
90°
23” with mounting
plates
Depth
19.5”
19.5”
19.5”
Weight
Up to 24 kg
Up to 48 kg Up to 58 kg
Free space above the
MCU rack
3” in standard
installations
3” standard It is
installation, recommended for
9” if a MPI-
8 is to be
fitted
the installer to
refer to the NEBS
Standards
IP Protocols
MGC-50/MGC-100
Audio
G.711, G.722 (48), G.722.1, G.728, G.729A, G.
723.1, Siren 7, Siren 14
Video
Data
H.261, H.263 (Annexes N, F, P), H.264
T.120
H. 320 Protocols
MGC-50/MGC-100
Audio
G.711, G.722 (48), G.722.1, G.728, G. 723.1, Siren
7, Siren 14
Video
H.261, H.263 (Annexes N, F, P), H.264
Data
T.120
H.243
Cascading
1-4
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Table 1-1: MGC Specifications
Channel aggregation
H.221, BONDING, Multi-Rate (H0)
ISDN:
Network interfaces
T1 PRI, E1 PRI, Multirate ISDN, NFAS, Leased
lines-T1/E1, Switched 56
T1-CAS
T1-CAS lines for Audio Only connections
ATM:
25 (FVC.COM), 155 (FVC.COM)
IP (H.323 and SIP):
LAN
Serial:
V.35, RS449, RS530/A
External
Communications
MGC-50/MGC-100
Data rates
56 Kbps - 1920 Kbps (E1)
Network interfaces
ISDN T1/ E1, ATM-25 (First Virtual), ATM-155 (First
Virtual), T1-CAS, LAN, serial (MPI)
MGC Manager control
connection
An independent LAN connection (separate from the
Network connection)
Clock synchronization
Synchronizes to external network
Local/Remote External
Equipment
MGC-50/MGC-100
Operator workstations
Reservation systems
LAN/RS-232/Modem/Internet
LAN/Internet/Modem
Environment
MGC-50/MGC-100
Operating temperature
Storage temperature
Relative humidity
Operating altitude
Storage altitude
10°–40°C (50°–104°F)
-40°–70°C (40°–158°F)
15%-90% no condensing
Up to approx. 3,000m (10,000ft)
Up to approx. 12,000m (40,000ft)
1-5
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 1 - Before You Begin
Table 1-1: MGC Specifications
Operating ESD
Storage ESD
+8kV
+15kV
System
Communications
MGC-50/MGC-100
Integrated scheduler
Yes
Yes
API to 3rd party
reservation systems
Conference Setup
MGC-50/MGC-100
(Scheduled/
Unscheduled)
Meet Me Per
•
•
•
•
Conference
MCU
Channel
Party
Dial-out/Dial-in
Yes
Diagnostics
MGC-50/MGC-100
Power up
On-line
Yes
Yes
Yes
Remote
Serviceability /
Reliability
MGC-50/MGC-100
Hot plug-in modules
Yes
Yes
Front panel removable
modules
Power Supply
MGC-50
MGC-100
DC Input
-
-48 VDC
1-6
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Table 1-1: MGC Specifications
AC Input
100-240 VAC,
50/60 Hz
100-240 VAC,
50/60 Hz
Power Consumption
MGC-50
MGC-100
AC Maximum Power
consumption
AC Voltage -
10Amp at 100
VAC, 5 Amp at
240 VAC
AC Voltage - 8.5 Amp at 100
VAC and 4.2 Amp at 240 VAC
protected by a 15 Amp circuit
breaker.
protected by a
12.5 Amp fuse.
Note: Older
MCU units may
have different
power ratings.
Contact your
next level of
support.
DC Voltage - 30 Amp at 48 VDC
protected by a 50 Amp circuit
breaker.
Note: Older MCU units may
have different power ratings.
Contact your next level of
support.
1-7
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 1 - Before You Begin
Scope of Manual
This manual describes the MGC-50 and the MGC-100 hardware and
installation procedure. It is intended for service engineers, system
administrators and system operators who need to install, configure and
maintain the MGC unit.
Detailed information on using the system, including starting and shutting
down the system, is provided in the MGC Manager User’s Guide.
This manual assumes the user has the following knowledge:
•
Familiarity with the Windows 95®, Windows 98®, Windows 2000®,
Windows NT®, and Windows XP® environment and interface
•
Basic knowledge of videoconferencing concepts and terminology
The MGC Hardware and Installation Manual includes the following topics:
•
Chapter 1 - Before You Begin
Provides a general description of the MGC unit, its main features and
description of the MGC Hardware and Installation Guide.
•
•
•
•
Chapter 2 - MGC Unit Hardware Installation
Installing the MGC unit and connecting it to the operator workstations.
Chapter 3 - System Architecture
Describes the system architecture and the data flow.
Chapter 4 - Hardware Description
Describes the various components that make up the MGC unit.
Chapter 5 - Maintenance
Describes the controls and LED indicators and provides maintenance
procedures.
•
Appendix A - Interfaces Pin Assignment
Describes the pinout of the various MGC unit connectors.
1-8
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Conventions
Before using this manual, it is important for you to understand the terms and
conventions used:
•
•
•
•
•
•
The term “Choose” or “Double-click” is used when you need to activate
a menu command or a command button in the dialog box.
The term “Select” or “Click” is used to highlight a part of the window,
dialog box or menu that you want to be changed with your next action.
The term “Right-click” is used when you press and release the right
mouse button to open a pop-up menu.
The term “Choose OK” means that you can either click the OK button
with the mouse, or press the <Enter> key on the keyboard.
Keyboard keys appear in capital letters, between these two symbols
< >. For example, the Shift key appears as <Shift>.
The plus sign (+) between two key names indicates that you must press
and hold down one key while pressing down the second key. For
example, “press <Alt>+<P> means that you press and hold down the Alt
key while you press the P key.
•
Bold type appearing in the text, or in a procedure indicates the word or
the character that you should type into a text box from the keyboard. It is
also used to indicate the name of the menu name or command name that
you should select.
•
•
Italic type appearing in the text or in a procedure indicates the menu
name, dialog box name or field name from which an option should be
selected or into which parameters should be entered.
Tips and notes appear in a different typeface and between two bars. For
example:
This is an example of notes that you may encounter throughout this Hardware
Manual.
1-9
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 1 - Before You Begin
List of Abbreviations
The following is the list of abbreviations used throughout this manual:
Table 1-2: Abbreviations
API
Application Programming Interface
CSU
DPR
ESD
HDLC
HSD
IP
Channel Service Unit
Dual Port Ram
Electro-Static Discharge
High-level Data Link Control
High Speed Data
Internet Protocol
ISDN
LAN
LED
LSD
MCU
MGC
MPI
Integrated Services Digital Network
Local Area Network
Light Emitting Diode
Low Speed Data
Multipoint Control Unit
Multimedia Gateway Control
Multi Protocol Interface
Multiplexor
MUX
PBX
PRI
Private Branch Exchange
Primary Rate Interface
Transmission Control Protocol
Time Division Multiplexing
TCP
TDM
1-10
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Installation and Configuration Workflow
The MGC unit installation and configuration process includes the following
main steps: Hardware Installation, Software Installation, Database
Configuration, Network Services definition and the MGC unit cards
configuration. The Hardware Installation stage is described in this guide. The
remaining steps are described in the MGC Administrator’s Guide, as
described in following flowchart.
MGC Hardware and Installation Manual,
Chapter 2
MGC Hardware and Installation Manual,
Chapter 2
MGC Administrator’s Guide,
Chapter 2
MGC Administrator’s Guide,
Chapter 2
MGC Administrator’s Guide,
Chapter 2
MGC Administrator’s Guide,
Chapter 3
MGC User’s Guide - Volume II,
Chapter 6
Figure 1-3: Installation and Configuration Workflow
1-11
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 1 - Before You Begin
1-12
Download from Www.Somanuals.com. All Manuals Search And Download.
2
Hardware Installation
This chapter describes the unpacking and connection of both the MGC+50
and the MGC+100, to the ISDN, T1-CAS, H.323, MPI or serial network to
the operator workstation (PC)
MGC Hardware and Installation Manual,
Chapter 2
MGC Hardware and Installation Manual,
Chapter 2
MGC Administrator’s Guide,
Chapter 2
MGC Administrator’s Guide,
Chapter 2
MGC Administrator’s Guide,
Chapter 2
MGC Administrator’s Guide,
Chapter 3
MGC User’s Guide - Volume II,
Chapter 6
Figure 2-1: Installation and Configuration Workflow - Hardware Installation
2-1
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
MGC-100 Hardware Installation
Unpacking and Positioning the MGC-100
To unpack and position the MGC-100:
1. When you receive your MGC-100, inspect the equipment for damage
and verify that the components match the packing slip. If you did not
receive a component or if there is damage to the system, notify your
service representative immediately.
Wood Packing Case
Carrying Strap
Lock in Closed Position
Lock in Open Position
Figure 2-1: MGC-100 package
2. Place the MGC-100 unit on a stable flat surface in a location that meets
the MGC environment requirements, which are:
•
•
•
•
Operating temperature: 10°–40°C (50°–104°F)
Humidity: 15%–90% non-condensing
Altitude: Up to 3,000m (10,000ft)
ESD: +8 kV
2-2
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
3. Release the clasp locks at the bottom, and lift the MGC-100 top cover.
Wood Packing Case
Foam Block
Foam Block
Figure 2-2: Unpacking the MGC-100
4. Lift the MGC-100 unit and remove the packaging material.
5. Lower the MGC-100 unit, placing it on the surface.
If the MGC-100 is a standalone unit, place it on a flat surface. If you are
rack mounting the MGC-100, allow a minimum clearance of 3” above
the unit. If you are rack mounting the NEBS MGC-100, the 3” above the
unit is not needed. Refer to the NEBS Standards for clearance
compliance.
2-3
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
Mounting the MGC-100 on a 23” Rack
The MGC-100 can be mounted to a 23” rack using the two mounting plates
that are pre-installed on the unit.
1. Make sure that the MCU is turned OFF and it is disconnected from the
AC or DC power.
2. Place the MCU in a 23” rack and support it, screw the mounting brackets
to the rack securing it with bolts and
self-locking nuts (which the client provides).
-or-
If the MGC-100 was shipped without the two mounting plates that are
usually pre-installed:
1. Make sure that the MCU power is turned OFF and that it is disconnected
from the AC or DC power.
2. With a slotted screwdriver remove the five nylon plug hole covers from
the MCU side covers.
3. With an Allen wrench (M4), remove the five screws from the MCU side
covers.
4. Remove both MCU side covers.
front
remove
screws
rear
5. Remove the plates from the both sides of the MGC by removing the
appropriate number of functional modules to allow access to the screws.
2-4
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
6. Unscrew both MCU the side screws and remove both side plates.
front
Remove
plate
7. From the inside of the MGC-100, screw the mounting brackets to both
sides of the MCU, securing the screws in the mounted nuts.
Screw mounting
plate from the
inside of the MGC
(Front)
Secure with nut
2-5
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
8. Place the MCU in a 23” rack and while supporting it, screw the mounting
brackets to the rack securing it with bolts and self-locking nuts.
When the unit is installed on a rack, the rack must be properly grounded to the
central office ground. The rack must be grounded with two-hole compression-
type connectors using copper conductors (tinned or untinned). Wire, bus bar or
braided strap connectors are acceptable.
Mounting the MGC-100 on a 19” Rack
The MGC-100 can be mounted in a 19” rack using the mounting kit (P/N-
KIT2026A). It is highly recommended that the 19” rack be located in an air-
conditioned room.
Figure 2-3 shows how to mount the MGC-100 on the 19” rack.
19" Attachment Bar
Figure 2-3: MCU Rack Mount
2-6
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Because of heat considerations, the MCU must be installed with the Control Unit
Module placed on the left bottom.
1. Check that all the parts are in the kit.
The kit should contain the following items:
Table 2-1: 19” Rack Mounting Kit
Item #
Polycom P/N
Description
Quantity
1
MEC2063A
23" TO 19" Mounting Bar MGC-
100 at 90 Degrees
2
2
3
4
SCR2005A
WAS2003A
WAS2004A
Screw 10-32 x 1/2” Allen S/H
ST/ST
8
8
8
Washer M5 Spring Latch Loc.
ST\ST
Washer M5 Flat ST/ST
2. Make sure that the MCU power is turned OFF and it is disconnected
from the AC and DC power.
Remove the side covers as described on page 2-4.
3. If the MCU is a standalone unit, you must first remove the side covers,
and add the mounting brackets to a 23” rack (see pages 2-4 to 2-6).
4. Attach the two mounting bars to the MCU as follows:
a. Fit the spring washer (Item #3) onto the screw (#2).
b. Fit the flat washer (Item #4) onto the screw.
Item #4
Item #3
c. Take the two mounting bars (Item #1) from the kit and attach them
to the MGC-100 unit with the screws (with the attached washers, as
described in step b).
2-7
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
5. Carefully rotate the MGC-100 counterclockwise 90°, making sure the
Control Unit is at the bottom left.
6. While supporting the MGC-100, place it on the 19” rack and screw the
brackets to the rack, securing it with the screws and nuts supplied with
the rack.
NEBS Standard
For installations based within the United States, an MGC-100 DC NEBS
compliant system is available. The NEBS compliant systems differs in its
construction of the frame and the power supply. All else remains the same.
The construction of the MGC-100 is 12 U’s, (1 U = 4.3 cm) which makes it
higher by 3 U’s than the original frame of the MGC-100. This design allows
for a cushion of air to be present, ensuring safety in case of a heat related
problem.
In addition, the power supply is also designed differently by allowing the
circulation of cool air, providing a safety tolerance in case of a heat related
problems.
Use only shielded LAN cables where the shield is grounded at both ends
when connecting to the IO LAN port of the IP+48 on the MGC+ rear panel.
CONT
NET-E1
MUX
MUX
DATA
DATA
VIDEO
VIDEO
VIDEO
VIDEO
AUDIO
AUDIO
AUDIO
AUDIO
NET-8
NET-8
NET-8
Critical
Major
Minor
L0
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Power
L1
Line
Line
A
L2
B
L3
Figure 2-4: NEBS Standard Unit Front View
2-8
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Connecting and Setting Up the MGC-100
Use the MGC-100 rear panel diagram below for reference.
Slot A
Main Control
Module Cover
RS232
Connectors
Network
Connectors
MUSIC
LINE IN
COM
COM
1
ALARMS
LAN
10/100 Mbits
Main Switch
and Circuit Breaker
AC Inlet
Dry Contacts
RJ45 Connector
Fan
Figure 2-5: MGC-100 Rear Panel with External Connectors
To connect the MGC-100 to the network and power source and set up the
system the following procedures are performed:
•
Connecting the MGC unit to the power source (AC inlet or -48DC power
distribution unit)
•
•
Connecting the MGC unit to the LAN Network
Connecting the MGC unit to the Operator Workstation (PC) directly via
RS-232 (optional)
•
Connecting the MGC unit to the network(s)
2-9
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
MGC-100 Dongle
MGC-100 is shipped with a serial dongle installed on COM1 on the MCU
rear panel. The dongle is required for normal operation of the MCU. If the
dongle is missing, please contact support.
Connecting to the power source
You can connect to an AC Inlet or to DC power supply according to the power
system used in your site. Follow the steps appropriate to your power system.
The following restrictions apply to the conductors and connectors that may be
used to ground the unit when rack mounted:
•
When using bare conductors, they must be coated with an appropriate
antioxidant compound before crimp connections are made. Tinned,
solder-plated or silver-plated connectors do not have to be prepared in
this manner.
•
•
The same bolt assemblies should not secure multiple connectors.
Listed fastening hardware must be compatible with the materials being
joined and must be preclude loosening, deterioration and electrochemical
corrosion of the hardware and joint materials.
To connect to the AC Inlet:
1. Make sure the power switch is OFF. Insert the power cable into the
power connector on the rear panel of the MGC-100 unit.
Main Switch
AC Inlet
2. Insert the power cable into the power source socket.
3. Turn on the power by pressing on the power switch located on the rear
panel of the MGC-100 unit.
2-10
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
To connect to the -48DC power system:
1. Make sure the power switch is OFF. Turn off the DC power distribution
unit.
2. Using the three wires 10 AWG cable running from the DC power
distribution unit, connect the black wire into the -48IN terminal block
and the red wire to the -48V RTN terminal block.
3. Connect the green or green-yellow wire to the system single-point
“Ground” screw.
COM
Ground
ON
OFF
+
ON
-48V -48V
IN
RTN
OFF
+
-48V -48V
IN
RTN
If the unit is rack mounted, the single-point ground on the MCU must be
connected to the rack with a single conductor and attached as to prevent
loosening.
When using bare conductors, they must be coated with an appropriate
antioxidant compound before crimp connections are made. Tinned,
solder-plated or silver plated connectors do not have to be prepared in
this manner.
4. Turn on the DC power distribution unit.
2-11
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
5. Turn on the power by pressing on the power switch located on the rear
panel of the MGC-100 unit.
Connecting the MGC-100 to the LAN Network
Connect one end of a network cable to the LAN connector on the rear panel of
the MGC-100 and the other end to the network.
Connecting the MGC-100 to the Operator Workstation (PC) Directly
via RS-232 (Optional)
Connect one end of an RS-232 cable to the COM2 connector on the front
panel of the MGC-100 Control Unit and the other end to the serial port of the
operator station (see RS-232 Pin Assignment, A-3).
2-12
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Connecting the MGC-100 to the Network
To connect the MGC-100 to the ISDN network or T1-CAS Network:
The ISDN network is optional. If the MGC-100 has to be connected to the public
ISDN network then an external CSU or similar equipment is needed.
T1-CAS network is optional. It allows you to connect Audio Only participants to
conferences via T1-CAS lines. It uses the same network connections as ISDN
and the procedure described below is applicable to both ISDN and T1-CAS
lines.
•
Connect the 8-pin RJ-45 connector of the network cable to the NET
RJ-45 jack on the rear panel of the MGC-100. Repeat this step for each
of the ISDN network lines to be connected to the Network Interface card
installed in the MCU.
ISDN Network connection
for 4 spans
ISDN network
connection
ISDN Network connection
for 8 spans
Figure 2-6: ISDN network connection
Leased lines should be connected using an adapter with a screw
connector with solid conductor wires or a similar adapter.
•
Connect one side of the adapter to the NET RJ-45 jack on the rear panel
of the MGC-100. Then connect the leased line wires to the other side of
the adapter.
The ISDN and T1-CAS network properties must be defined in the Network
Services. For details, see the MGC Administrator’s Guide, Chapter 3.
2-13
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
To connect the MGC-100 to the ATM network:
The MGC-100 can be connected to an ATM network. The type of connection
being used differs according to the ATM Network Interface card installed in
the MCU.
If an ATM-25 network interface card is installed, connect the 8-pin
RJ-45 connector of the network cable to the NET RJ-45 jack on the rear panel
of the MGC-100.
Figure 2-7: ATM-25 network connection
If an ATM-155 network interface card is installed, first remove the rubber
plug covering the jack. Then connect the fiber optics cable connector to the
jack on the rear panel of the MGC-100.
Figure 2-8: ATM-155 network connection
The ATM network properties must be defined in the Network Services, For more
details, see the MGC Administrator’s Guide, Chapter 3.
2-14
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
To connect the MGC-100 to the IP network:
If an IP network Interface card is installed in the MGC-100, connect the 8-pin
RJ-45 connector of the LAN network cable to the LAN-323 RJ-45 jack on the
rear panel of the MGC-100.
Figure 2-9: LAN H.323 network connection
When installing a NEBS compliant system, use only shielded LAN cables where
the shield is grounded at both ends when connecting to the IO LAN port of the
IP+48 on the MGC+ rear panel.
The IP network properties must be defined in the IP Network Service. For
details, see MGC Administrator’s Guide, Chapter 3.
2-15
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
MPI-4/8 Hardware Installation for the MGC-100
The MPI-4/8 (Multi Protocol Interface) Network Interface card is inserted
into the MGC-100 unit.
The MPI box may be mounted on top of the MGC-100 using mounting
brackets, or on a separate 19” or 23” rack, as can be seen in Figure 2-8. When
installed on a 19” rack, the MPI box can be mounted directly on the rack.
When installed on a 23” rack, a mounting plate must be used. If the MGC-100
is rack mounted, there must be at least 6” free space above the MGC-100 to
be able to install the MPI Box on top of the MGC unit.
MPI Box
in 19" Rack
Mounting
Plate
C
O
N
T
PR
I
-
8
y
MG
-
3
2
3
AU
St
Fail
Ac iv
D
I
O
AU
St
Fail
Ac
D
I
O
VI
St
Fail
Ac iv
D
EO
VI
St
Fail
Ac
D
EO
VI
St
Fail
Ac iv
D
EO
VI
St
Fail
Ac iv
D
E
O
Cr
itic
a
l
ACCORD
MGC-50
St
b
St
b
y
b
y
b
y
b
y
b
y
b
y
b
y
M
a
j o
r
Fail
Ac
F
a
i l
Mi
n
o
r
tiv
e
Activ
e
t
e
t
i
ve
t
e
t
i
ve
t
e
t
e
L
0
L
in
in
in
e
e
e
1
2
3
L
L
L
L
in
in
e
e
4
5
Po
we
r
L
L
1
2
L
L
in
in
e
e
6
7
L
in
e
8
PWR
OUT
Figure 2-10: MPI Box rack mounting options
2-16
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
To install the MPI-4/8 Network Interface Module:
1. Slide the MPI-4/8 Network Interface module into a free slot in the MGC
front panel.
2. Push the MPI-4/8 Network Interface module firmly into the Backplane,
making sure it is properly seated in its slot.
3. Tighten the screws on the front panel of the MGC-100 that secure the
MPI-4/8 Network Interface module.
To install the MPI Box on Top of the MCU:
1. Turn OFF power to the MCU and unplug it from AC power.
2. If the MCU is rack mounted, disconnect all the external cables, dismount
the MCU from the rack and place it on a desktop or work table.
If it is a standalone unit, remove the MCU side panels.
3. Remove the two Phillips screws on each side of the MCU (near the rear
panel).
rear
remove
screws
front
2-17
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
4. Place the mounting bracket on top of the MCU aligning it against the
screw openings as shown below and tighten the screws.
rear
tighten
screws
front
5. Mount the bracket on the other side of the MCU (repeat step 4).
6. Place the MPI box with its four 160-pin connectors facing the MCU front
panel between the two mounting brackets. Secure it with the screws
supplied with the MPI Box.
rear
front
2-18
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
7. If the MCU is standalone, reassemble the side panels.
If the MCU is rack mounted, mount the unit on the rack and connect all
the external cables.
PORTS
1-4
PORTS
9-12
PORTS
5-8
PORTS
13-16
CONT
Critical
NET-8
NET-8
NET-8
NET-E1
MPI
MPI
DATA
DATA
VIDEO
VIDEO
VIDEO
VIDEO
AUDIO
AUDIO
AUDIO
AUDIO
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Major
Minor
L0
MGC-100
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
A
A
B
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
B
Power
L1
Line
Line
A
B
L2
L3
PWR
IN OUT
PWR
PWR
IN OUT
IN OUT
8. Using the cable provided with the MPI kit, connect the 160-pin
connector to Port A of the MPI-8 Network Interface front panel. Connect
the other end of the cable to a (Ports 1-4) 160-pin connector of the MPI
Box; by doing this procedure we have utilized the MPI Box as a MPI-4.
9. Using a second cable, connect the angled 160-pin connector to Port B of
the MPI-8 Network Interface front panel. Connect the other end of the
cable to B (Ports 5-8) 160-pin connector of the MPI Box.
Using this procedure we have utilized the MPI Box as a MPI-8.
PORTS
1-4
PORTS
9-12
PORTS
13-16
PORTS
5-8
CONT
Critical
NET-8
NET-8
NET-8
NET-E1
MPI
MPI
DATA
DAT
A
VIDEO
VIDEO
VIDEO
VIDEO
AUDIO
AUDIO
AUDIO
AUDIO
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
St
Fil
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Major
Minor
L0
MGC-100
Active
Active
Active
Activ
ctive
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
A
B
A
Line
Line
1
2
Line
Line
1
2
Line
Line
1
2
Line
Line
Line
Line
Line
Line
3
4
5
6
7
8
Line
Line
Line
Line
Line
Line
3
4
5
6
7
8
Line
Line
Line
Line
Line
Line
3
4
5
6
7
8
B
Power
L1
Line
Line
A
L2
B
L3
PWR
IN OUT
PWR
PWR
IN OUT
IN OUT
2-19
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
10. Connect the serial cable running from the DCE to the appropriate 37-pin
connector on the rear panel of the MPI Box. If dialing is used, connect
the appropriate cable from the DCE to the 25-pin connector on the rear
panel of the MPI Box.
Whenever the MGC unit is used as a DCE and connected straight to an
endpoint the serial data stream flows from the endpoint (DTE) through
the serial connector to the MPI box. The connections stay the same,
meaning; the endpoint is connected to the back of the MPI box by way of
the 37-pin connector, and the other side of the MPI box is then connected
by way of the 160-pin connector to the MPI card in the MGC unit. For
more information, refer to Chapter 4, “The MPI-8 Network Interface
Module” on page 4-39.
•
•
If V.35 or RS-530 cable is used, attach the special adapter (provided with the
kit) to the 37-pin prior to connecting the serial cable from the DCE.
The serial (MPI) network properties must be defined in the Network
Services, For details, see MGC Administrator’s Guide, Chapter 3.
2-20
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
MGC-50 Hardware Installation
Unpacking and Positioning the MGC-50
To unpack and position the MGC-50:
1. When you receive your MGC-50, inspect the equipment for damage and
verify that the components match the packing slip. If you did not receive
a component or if there is damage to the system, notify Polycom
immediately.
Wood Packing Case
Carrying Strap
Lock in Closed Position
Lock in Open Position
Figure 2-11: MGC-50 package
2. Place the MGC-50 unit on a stable flat surface in a location that meets
the MGC-50’s environment requirements, which are:
—
—
—
—
Operating temperature: 10°–40°C (50°–104°F)
Humidity: 15%–90% noncondensing
Altitude: Up to 3,000m (10,000ft)
ESD: +8 kV
2-21
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
3. Release the clasp locks at the bottom, and lift the MGC-50 top cover.
Wood Packing Case
Foam Blocks
Foam Blocks
Figure 2-12: Unpacking the MGC-50
4. Lift the MGC-50 unit and remove the package base.
5. Lower the MGC-50 unit, placing it on the surface.
If you are rack mounting the MGC-50, allow a minimum clearance of 3
inches above the unit.
2-22
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Mounting the MGC-50 on a Rack
The MGC-50 can be mounted in a 19” rack using two mounting plates (Kit
2012A). The side plates are usually mounted when shipped, but if not, follow
the directions below to install the mounted plates on the MGC-50 and then
mount the MGC-50 on the 19” rack.
To install and mount the MGC-50:
1. Make sure that the MGC-50 power is turned OFF and it is disconnected
from the AC power.
2. Remove the five nylon plug hole covers from the MGC-50 protective
side covers (using a slotted screwdriver).
3. Using an Allen wrench (M4), remove the five screws from the MGC-50
side covers.
4. Remove the MGC-50 side covers from both sides.
front
remove
screws
rear
5. To remove the plate from both MGC-50 sides, the side screws have to be
removed. To remove the screws from the left side the main control
module and the power supply must be removed first. These procedures
are described in Chapter 5 of this manual. For detailed procedures, see
Chapter 5, “Replacing the Main Control Module” on page 5-17. For
instructions on how to remove the power supply see Chapter 5,
“Replacing the Power Supply Module for the MGC-50” on page 5-12.
2-23
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
6. Once the Main Control Module, the power supply module and the boards
are removed, unscrew the side screws from inside the MGC-50, and then
remove the plate from both MGC-50 sides.
Front
Remove
plate
Rear
7. From the inside of the MGC-50, screw the mounting bracket to the side
of the MGC-50, securing the screws in the mounted nuts.
Screw mounting
plate from the
inside of the MGC
(Front)
2-24
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
8. To remove the plate from the right side of the MGC unit remove the
appropriate number of functional modules to allow access to the screws.
9. From the inside of the MGC-50, screw the mounting bracket to the side
of the MGC-50, securing the screws with the mounted nuts.
10. Insert the functional modules removed earlier into the MGC-50.
11. Mount the Power Supply module and Main Control Module back in their
place as described in Chapter 5, “Replacing the Main Control Module,”
page 5-18 and “Replacing the Power Supply Module,” page 5-12.
12. Place the MGC-50 in a 19” rack and while supporting it, screw the
mounting brackets to the rack securing it with nuts.
MGC-50
in 19" Rack
CONT
P
R
I
-
8
M
G
-
3
23
A
UDIO
A
UDIO
V
IDE
O
V
IDE
O
V
IDE
O
VIDEO
C
r
i
i
c
a
l
ACCORD
S
F
A
tb
il
ctive
y
S
F
A
tb
il
ctive
y
S
F
A
tb
il
ctive
y
S
F
A
tb
il
ctive
y
S
F
A
tb
il
ctive
y
S
F
A
tb
il
ctive
y
S
t
b
y
S
F
A
tb
il
ctive
y
M
M
a
jo
r
a
a
a
a
a
a
F
a
il
a
in
o
r
MG C-50
A
ctive
L
0
Mounting
Plate
L
in
e
1
2
3
4
L
L
in
e
in
e
Lin
e
P
ower
Lin
e
5
6
L1
L
in
e
L2
Lin
e
7
8
L
in
e
PWR
OUT
2-25
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
Connecting and Setting Up the MGC-50
Use the MGC-50 rear panel diagram below for reference.
Main Control
Module Cover
IO Card
COM
1
LAN
Fuse
Main Switch
Fan
RJ45
Connector
AC Inlet
Figure 2-13: MGC-50 Rear Panel with External Connectors
To connect the MGC-50 to the network and power source and set up the
system the following procedures are performed:
•
•
•
Connecting the MGC unit to the power source (AC inlet)
Connecting the MGC unit to the LAN Network
Connecting the MGC unit to the Operator Workstation (PC) directly via
RS-232 (optional)
•
Connecting the MGC unit to the network(s)
MGC-50 Dongle
MGC-50 is shipped with a serial dongle installed on COM1 on the MCU rear
panel. The dongle is required for normal operation of the MCU. If the dongle
is missing, please contact support.
2-26
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Connecting to the Power Source
To connect to the AC Inlet:
1. Make sure that the power switch located on the rear panel of the MGC
unit is off.
2. Insert the power cable into the power connector on the rear panel of the
MGC-50 unit.
Main Switch
AC Inlet
3. Insert the power cable into the power source socket.
4. Turn on the power by pressing on the power switch located on the rear
panel of the MGC-50 unit.
If the unit is rack mounted, the single-point ground on the MCU-50 must
be connected to the rack with a single conductor and attached so that it
prevents loosening.
The following restrictions apply to the conductors and connectors that
may be used to ground the unit when rack mounted:
—
When using bare conductors, they must be coated with an
appropriate antioxidant compound before crimp connections are
made. Tinned, solder-plated or silver plated connectors do not have
to be prepared in this manner.
—
—
Multiple connectors should not be secured with the same bolt
assemblies.
Listed fastening hardware must be compatible with the materials
being joined and must avoid loosening, deterioration and
electrochemical corrosion of the hardware and joint materials.
2-27
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
Connecting the MGC-50 to the LAN Network
Connect one end of a network cable to the LAN connector on the rear panel of
the MGC and the other end to the network.
Connecting the MGC-50 to the Operator Workstation (PC) Directly via
RS-232 (Optional)
Connect one end of an RS-232 cable to the COM 2 connector on the front
panel of the MGC Control Unit and the other end to the serial port of the
operator station (See RS-232 Pin Assignment, A-3).
Connecting the MGC-50 to the Network
To connect the MGC-50 to the ISDN network and T1-CAS network:
This is an optional Network Interface Card. If the MGC-50 has to be connected
to the public ISDN network then an external CSU or where required, similar
equipment is needed.
T1-CAS network is optional. It allows you to connect Audio Only participants to
conferences via T1-CAS lines. It uses the same network connections as ISDN
and the procedure described below is applicable to both ISDN and T1-CAS
lines.
•
Connect the 8-pin RJ-45 connector of the network cable to the NET
RJ-45 jack on the rear panel of the MGC. Repeat this step for each of the
ISDN network lines to be connected to the Network Interface card
installed in the MCU.
2-28
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
ISDN Network connection
for 4 spans
ISDN network
connection
ISDN Network connection
for 8 spans
Figure 2-14: ISDN network connection
•
Leased lines should be connected using an adapter with a screw
connector for solid conductor wires with a diameter in the range 0.4 to
0.6 mm. Use Polycom P/N CBL0602A or similar adapter.
Connect one side of the adapter to the NET RJ-45 jack on the rear panel
of the MGC. Then connect the leased line wires to the other side of the
adapter.
The ISDN and T1-CAS network properties must be defined in the Network
Services. For details, see the MGC Administrator’s Guide, Chapter 3.
2-29
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
Connecting the MGC-50 to the ATM Network
The MGC-50 can be connected to an ATM network. The type of connection
used differs according to the ATM Network Interface card installed in the
MCU.
If an ATM-25 network interface card is installed, connect the 8-pin
RJ-45 connector of the network cable to the NET RJ-45 jack on the rear panel
of the MGC.
Figure 2-15: ATM-25 network connection
If an ATM-155 network interface card is installed, first remove the rubber
plug covering the jack. Then connect the fiber optics cable connector to the
jack on the rear panel of the MGC.
Figure 2-16: ATM -155 network connection
The ATM network properties must be defined in the Network Services, for
details, see the MGC Administrator’s Guide, Chapter 3.
2-30
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Connecting the MGC-50 to the IP Network
If an IP network Interface card is installed in the MGC, connect the 8-pin
RJ-45 connector of the LAN network cable to the LAN-323 RJ-45 jack on the
rear panel of the MGC.
Figure 2-17: LAN IP network connection
The IP network properties must be defined in the IP Network Service. For
details, see MGC Administrator’s Guide, Chapter 3.
2-31
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
The MPI-8 Network Interface card is inserted into the MGC-50.
The MPI box is mounted on a 19” rack together with the MGC-50, as can be
seen in Figure 2-15. The MPI box is mounted directly on the rack, above the
MGC-50, leaving at least 6” free space above the MGC-50. For details, on
how to mount the MGC-50, refer to the section “Mounting the MGC-50 on a
Rack” on page 2-23.
MPI Box
in 19" Rack
MPI Box
C
O
NT
PR
St
Fail
I
-
8
MG
-
3
2
3
AU
St
Fail
iv
D
I
O
AU
St
Fail
Ac iv
D
I
O
VI
St
Fail
iv
D
EO
VI
St
Fail
Ac iv
D
E
O
VI
St
Fail
iv
D
EO
VI
St
Fail
Ac iv
D
EO
C
r
itic
a
l
ACCORD
MGC-5
b
y
St
Fail
Ac iv
b
y
b
y
b
y
b
y
b
y
b
y
b
y
Majo
r
Min
o
r
0
A
c
t
iv
e
t
e
A
ct
e
t
e
A
ct
e
t
e
A
ct
e
t
e
L
0
L
L
L
in
in
in
e
1
e
2
3
e
L
L
in
e
4
5
Pow
e
r
i
n
e
L
1
L
L
in
e
6
7
L
2
Mounting
Plate
i
n
e
L
i
n
e
8
PWR
O
U
T
Figure 2-18: MPI Box mounting option
2-32
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
To install the MPI-8 Network Interface Module:
1. Slide the MPI-8 Network Interface module into a free slot in the MCU
front panel.
2. Push the MPI-8 Network Interface module firmly into the Backplane,
making sure it is properly seated in its slot.
3. Tighten the screws on the front panel of the MGC-50 that secure the
MPI-8 Network Interface module.
To mount the MPI Box on the Rack for the MGC-50:
1. Turn OFF power to the MCU and unplug it from AC power.
2. If the MCU is rack mounted, disconnect all external cables, dismount the
MCU from the rack and place it on a desktop or work table
3. Place the MPI box with is four 160-pin connectors facing the MGC-50
front panel between the two rails of the rack. Secure it to the rack with
the screws supplied with the MPI Box.
PORTS
1-4
PORTS
9-12
PORTS
5-8
PORTS
13-16
4. Connect all the external cables to the MPI box:
Using the cable provided with the MPI kit, connect the 160-pin
connector to Port A of the MPI-8 Network Interface front panel. Connect
the other end of the cable to a (Ports 1-4) 160-pin connector of the MPI
Box. Again, by doing this procedure we have utilized the MPI Box as a
MPI-4.
2-33
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
Using a second cable, connect the 160-pin connector to Port B of the
MPI-8 Network Interface front panel. Connect the other end of the cable
to B (Ports 5-8) 160-pin connector of the MPI Box. By doing this
procedure we have utilized the MPI Box as a MPI-8.
PORTS
1-4
PORTS
9-12
PORTS
5-8
PORTS
13-16
CONT
Critical
PRI-8
MPI
AUDIO
AUDIO
VIDEO
VID
VIDEO
VIDEO
ACCORD
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fa
by
ail
Stby
Fail
Stby
Fail
Major
Minor
L0
MGC-50
Active
Active
Active
Active
ctive
Active
Active
Active
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Power
L1
L2
L3
PWR
OUT
5. Connect the serial cable running from the DCE to the appropriate 37-pin
connector on the rear panel of the MPI Box (If the endpoint is a DCE,
then connect this to the MPI Box. For more information, refer to chapter
4). If dialing is used, connect the appropriate cable from the DCE to the
25-pin connector on the rear panel of the MPI Box.
•
•
If the V.35 or RS-530 cable is used, attach the special adapter (provided with
the kit) to the 37-pin prior to connecting the serial cable from the DCE.
The serial (MPI) network properties must be defined in the Network
Services, for details, see MGC Administrator’s Guide, Chapter 3.
2-34
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
First Entry IP Configuration
This following section describes the first entry IP Configuration for
pSOSystem and XPEK Operating Systems.
IP Configuration Change on XPEK and pSOS OS
1. Connect a Hub or cross-over LAN cable between the laptop’s LAN
connection and the LAN connection of the Control Unit.
2. On the laptop, click Control Panel ->Network Connection->Local
Area Connection.
3. In the Local Area Connection - General dialog box, click the Properties
button.
4. In the Local Area Connection Properties dialog box and click Use the
following IP address.
5. Type the IP address 129.254.4.7 (of the laptop as part of the network
segment on the MCU).
6. Click OK.
7. Run the MGC Manager application.
8. Define a new MCU:
a. In the Browser pane, right-click the MCUs Network icon, and then
click New MCU.
2-35
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
The Add MCU dialog box opens.
b. In the Name box, enter the name of the MCU.
Specify a name that clearly identifies the MCU.
c. In the IP Address box, enter the factory-setting IP
Address:129.254.4.8.
d. Click OK.
The new MCU is added to the MCUs list.
9. In the MCUs list, double-click the MCU icon to connect to it.
2-36
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
10. Modify the IP address of the MCU unit as allocated by the network
administrator. This is the IP address with which the MCU is identified on
the LAN site:
a. Right-click the MCU icon, and then click IP Configuration.
The IP Configuration dialog box opens.
b. The following parameters should be modified to match the actual
network:
2-37
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
Table 2-2: IP Configuration Options
Option
Description
IP Address
The system displays the currently defined IP
address. Enter the IP address allocated to the
MCU by the network administrator.
Subnet Mask
Enter the Subnet Mask of the MCU.
Default Gateway
Enter the IP Address of the default gateway/
router.
11. Click OK.
12. Exit the MGC Manager and switch OFF the MCU.
13. Disconnect the MCU from the cross-over cable.
14. Connect the MCU to your site’s network.
15. Switch ON the MCU.
a. Right-click the MCU icon, and then click Properties.
2-38
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
The MCU Properties dialog box opens.
The current MCU name.
To modify, type a new
name
MCU IP address. Enter
the IP address of the MCU
as allocated by the
network administrator
b. Enter the IP address of the MCU as you have defined in the IP
Configuration.
c. Click OK.
Using a DOS Diskette with the Updated LAN.CFG File
1. Using Windows Notepad, create a new text file with the following text:
IP_ADDRESS = aaa.bbb.ccc.ddd
NETWORK_MASK = aaa.bbb.ccc.ddd
DEFAULT_GATEWAY = aaa.bbb.ccc.ddd,
where aaa, bbb, ccc, and ddd are numbers between 0 to 255, as follows:
Table 2-3: IP Configuration Options
Option
Description
IP Address
Enter the IP address allocated to the MCU by
the network administrator.
Subnet Mask
Enter the IP address of the subnet mask.
Enter the IP address of the default gateway.
Default Gateway
2-39
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
2. Save the information, creating a text file named LAN.CFG.
3. Copy the file to an empty DOS diskette.
4. Turn on the MCU and wait for the Power LED to blink.
5. Insert the DOS diskette to the MCU diskette drive.
6. The MCU reads information from the diskette several times. Wait for the
floppy to stop blinking.
7. Remove the diskette from the diskette drive.
8. Connect the MCU to your site’s network.
9. Define a new MCU using the IP address you have entered in the
LAN.CFG file:
a. In the Browser pane, right-click the MCUs Network icon, and then
click New MCU.
The Add MCU dialog box opens.
b. In the Name box, enter the name of the MCU. Specify a name that
clearly identifies the MCU.
c. In the IP Address box enter the default IP Address of the MCU as
entered in the LAN.CFG file.
d. Click OK.
The new MCU is added to the MCUs list.
2-40
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Clocking
To be able to work with the network connected to the MCU you need to
synchronize the system clock with the network clock. This is done in two
steps:
•
Selecting the network type according to which the system clock will
synchronize. Only one system type may be selected for clocking. The
clock source is then defined in the “system cfg”.
•
Selecting the spans of the selected network that will act as Master and
Backup clocks. The Master and the Backup clock must be set on spans of
the same network type.
For more details regarding the clocking setup, see the MGC Administrator’s
Guide, “Clocking” in Chapter 5.
You have completed the hardware installation. The next step in the
installation procedure is to install the MGC Manager software. For more
information, refer to the MGC Administrator’s Guide, Chapter 2.
2-41
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 2 - Hardware Installation
2-42
Download from Www.Somanuals.com. All Manuals Search And Download.
3
System Architecture
The MGC unit is designed to provide maximum reliability, minimum
interruptions, and effortless maintenance. Removable active components are
accessed via the front panel to provide quick and easy serviceability.
Redundant power supplies are easily accessed via the front panel, ensuring a
swappable). Network connections on the back of the unit enable easy
module removal and prevent accidental disconnection.
All Functional Modules are front-removable and hot-swappable, allowing
servicing functions to be performed while the system is in operation.
The operator accesses the MGC unit from an operator work station which is
connected to the MGC unit via an Ethernet interface or an RS-232 interface,
as shown in Figure 3-1, “MGC interfaces”.
LAN / WAN / RS-232
MGC-50
Operator Workstation
MGC-100
Figure 3-1: MGC interfaces
Figure 3-2, “MGC-100 Components” on page 3-2 and Figure 3-3, “MGC-50
components” on page 3-3 show the internal layout of the MGC-100 and the
MGC-50, respectively. All of the MGC modules and cards connect to the
backplane.
3-1
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 3 - System Architecture
The MGC Unit is made up of:
•
•
•
•
Main Control Module, located at the top left of the unit when viewed
from the front
Functional Modules, located to the right of the Main Control Module
when the unit is viewed from the front
Power Supply Module, located underneath the Main Control Module and
Functional Modules
Input/Output cards, located behind the backplane opposite the Functional
Modules.
The various modules communicate with each other via the Backplane. The
Control Bus and Information Highway are implemented on the Backplane.
Figure 3-2 describes the functional block diagram of the MGC-100
components.
Backplane
H.323 I/O
H.323 Network I/F
Rear
ATM I/O
ATM Network I/F
NET I/O
ISDN Network I/F
MUX
MUSIC I/O
Audio
Video
Data
Main Control
Module
Front
Power Supply
Module
Figure 3-2: MGC-100 Components
3-2
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 3 - System Architecture
Figure 3-4 shows the physical layout of the MGC-100 and how it interfaces
with the outside world.
Operator
Workstation
RS232
RS232
Ethernet
ATM
Network
Hard
Disk
Serial
Inteface
Comm.
Controller
Main
CPU
LAN
Interface
Main
C
8
M
Control
Module
CPU Bus
Control Bus
Functional
ISDN
H323
Network
ATM
Network
MPI
Network
Audio
Module
Video
Module
MUX
Module
Data
Module
Modules
Network
H323
Network
Interface Interface Interface Interface
Information Highway
ISDN
Network
MPI
Box
DCE
Figure 3-4: MGC unit functional block diagram
3-4
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Figure 3-5 shows the physical layout of the MGC-100 and how it interfaces
with the outside world.
H323
ISDN
ATM
Network Network Network
CSU/PABX
LAN
Workstations
RS232
Alarms
120/230 V
Workstations
RS232
MGC-100
I/O
I/O
I/O
Ethernet
Card
Card
Card
Floppy Disk
Hard Disk
Comm.
Controller
Main
CPU
LAN
Interface
Serial
Interface
Main
Control
Module
CPU Bus
Power Bus
Serial
equipment
Communication Bus
Information
Functional
Modules
ISDN
Network
Interface
ATM
Network
MPI
Network
Interface Interface Interface
H323
Network
Audio
Module
Video
Module
MUX
Module
Data
Module
Fan
Module
MPI
Box
Power
Module
Power
Module
Power
Module
Power
Supply
Unit
Power Plane
Figure 3-5: MGC-100 functional block diagram
3-5
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 3 - System Architecture
Figure 3-6 shows the physical layout of the MGC-50 and how it interfaces
with the outside world.
H323
ATM
ISDN
Network Network Network
CSU/PABX
Workstations
RS232
120/230 V
LAN
Alarms
Workstations
RS232
MGC-100
I/O
I/O
I/O
Ethernet
Card
Card
Card
Floppy Disk
Hard Disk
Comm.
Controller
Main
CPU
LAN
Interface
Serial
Interface
CPU Bus
Power Bus
Serial
equipment
Communication Bus
Information
ISDN
Network
Interface
MPI
Network
Interface
H323
Network
ATM
Network
Interface Interface
Audio
Module
Video
Module
MUX
Module
Data
Module
Fan
Module
MPI
Box
Power
Module
Power
Module
Power
Module
Power
Supply
Unit
Power Plane
Figure 3-6: MGC-50 functional block diagram
3-6
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Information Flow
Figure 3-7 shows the flow of information within the system.
The MUX Module is not used with the H.323.
H323
I/O Card
I/O Card
ATM
MPI
H.323 Network
Interface
Module
(includes MUX)
ISDN/ATM/MPI
Network
Interface
Module
Main
Control
Module
MUX
Module
Audio
Module
Data
Module
Video
Module
Figure 3-7: Signal flow process
Information enters the MGC units from the telecommunications network via a
PBX or CSU, and into the Network Interface Module. The information is then
transferred to the MUX Module via the Internet.
The MUX Module transfers the control information to the Main Control
Module via the Control Bus. The control information is then processed by the
Main Control Module and a control response forwarded via the Control Bus
to the appropriate MUX Ports.
3-7
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 3 - System Architecture
The MUX module divides the incoming information into audio, video and
data components, and then forwards the information to the appropriate
functional module. The information arriving at the MUX ports is multiplexed
into Nx56/64 Kbps channels. These channels can be hyperchannels or
aggregated channels, depending on the capabilities of the network and the
receiving terminals.
The MUX Module transfers audio information to the Audio Module via the
Information Highway. The audio information is then processed by the Audio
Module and forwarded via the Information Highway to the appropriate MUX
ports.
The MUX Module transfers video information to the Video Module via the
Information Highway. There are two modes of video operation during a
conference:
•
Video Switching, where the speaker is the only person shown on the
screen. The MUX module broadcasts the video of the current speaker to
all sites involved in the conference.
•
Continuous Presence, where several participants are shown on the
screen. The video information is processed by the Video Module and
forwarded via the Information Highway to the appropriate MUX Ports.
The MUX Module transfers T.120 data (which follows the ITU-T T.120
standard for data transfer and application sharing in a multipoint conference)
to the Data Module via the Information Highway. The data information is
processed by the Data Module and forwarded to the appropriate MUX Ports.
After the audio, video, and data information has been processed, the
processed information flows back to the MUX module for multiplexing, after
which it is sent to the network via the Network Interface module and the
Input/Output card. This information is then transferred to the Network
Interface module via the Information Highway. The information is then ready
for transmission.
3-8
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
MGC Manager Interface
As shown in Figure 3-4, “MGC unit functional block diagram” on page 3-4,
the Main Control Unit communicates with the MGC Manager through the
LAN interface or the RS-232 interface.
Power Supply Flow
For the MGC-100, the AC power inlet is connected by a switch through a 15
Amp. circuit breaker and then filtered to the AC power supply module. The
DC power outlet delivers 5V, 12V, and -12V through the power bus in the
Backplane to the functional units and the Main Control Module. The 12V is
also delivered to the fans.
For the MGC-50, the AC power inlet is connected through a 12.5 amp. 250
volt fuse and then filtered to the AC power supply module.
3-9
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 3 - System Architecture
3-10
Download from Www.Somanuals.com. All Manuals Search And Download.
4
Hardware Description
This chapter describes the various components that make up the MGC unit.
The following components are described:
•
•
•
•
•
Backplane
Main Control Module
Power Supply Module
Fans
Functional Modules
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
ISDN Net-T1/Net-E1
ISDN/T1-CAS Net-2/4/8
ATM-25/155
MG323
IP24
IP48
IP+12, IP+24, IP+48
MPI-4/8
MUX
MUX+
Standard Audio
Audio+8A/V
Audio+12/24, Audio+24/48, Audio+48/96
Standard Video
Video+
Data
•
•
Input/Output cards
Greet&Guide hardware kit
4-1
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
MGC-100 Components Location
Figure 4-1 shows the front panel of the MGC-100. The front panel provides
access to the Main Control Module, the Functional Modules, and the Power
Supply Modules. Status LEDs on the Main Control Module, Functional
Modules, and Power Supply Modules indicate the status of the system.
Functional Modules
Ejectors
Main
Control
Module
LEDs
CONT
NET-E1
MUX
MUX
DATA
DATA
VIDEO
VIDEO
VIDEO
VIDEO
AUDIO
AUDIO
AUDIO
AUDIO
NET-8
NET-8
NET-8
Critical
Major
Minor
L0
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
MGC-100
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Power
L1
Line
Line
A
B
L2
L3
PWR
PWR
PWR
IN OUT
IN OUT
IN OUT
Floppy Disk Drive
COM Port
Figure 4-1: MGC-100 front panel
Power Supply Module Handle
4-2
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Figure 4-2 shows the rear panel of the MGC-100. The rear panel provides
access to the network I/O card connectors. I/O cards are inserted via the rear
panel. In addition, the rear panel houses the main power switch, AC inlet,
fans, the circuit breaker, additional communications ports and alarm ports.
The alarms port provides dry contacts for critical, major, and minor alarms.
Slot A
Main Control
Module Cover
RS232
Connectors
Network
Connectors
MUSIC
LINE IN
COM
1
ALARMS
COM
LAN
10/100 Mbits
Main Switch
and Circuit Breaker
AC Inlet
Dry Contacts
RJ45 Connector
Fan
Figure 4-2: MGC-100 rear panel with external connectors
4-3
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Figure 4-3 shows the front panel of the MGC-100 NEBS Standard. The front
panel, as in the MGC-100, provides access to the Main Control Module, the
Functional Modules, and the Power Supply Modules. Status LEDs on the
Main Control Module, Functional Modules, and Power Supply Modules
indicate the status of the system.
.
Functional Modules
Ejectors
Main
Control
Module
LEDs
CONT
NET-E1
MUX
MUX
DATA
DATA
VIDEO
VIDEO
VIDEO
VIDEO
AUDIO
AUDIO
AUDIO
AUDIO
NET-8
NET-8
NET-8
Critical
Major
Minor
L0
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
MGC-100
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Power
L1
Line
Line
A
B
L2
L3
Floppy Disk Drive
COM Port
Power Supply Module Cover
Figure 4-3: MGC-100 NEBS standard front panel
4-4
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Figure 4-4 shows the rear panel of the MGC-100 NEBS Standard.
The rear panel, as in the standard MGC-100, provides access to the
network I/O card connectors and fans. I/O cards are inserted via the
rear panel.
Slot A
Main Control
Module Cover
Network
Connectors
RS232 Connectors
USIC
NE IN
COM
1
COM
ALARMS
LAN
Power Switch
10/100 Mbits
and Circuit Breaker
Terminal
Blocks
+
Dry Contacts
Fan
RJ45 Connector
Figure 4-4: MGC-100 NEBS standard rear panel with external connectors
4-5
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Figure 4-5 shows the top view of the inside of the MGC-100. The Main
Control Module, Functional Modules, and I/O cards are all connected to the
Backplane. The Power Supply Modules, located underneath the Main Control
Module and the Functional Modules, are connected to the Powerplane.
REAR
Backplane
I/O cards
Main Control
Module
Function modules
FRONT
Figure 4-5: MGC-100 top (internal) view
4-6
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
MGC-50 Components Location
Figure 4-6 shows the front panel of the MGC-50. The front panel provides
access to the Main Control Module, the Functional Modules, and the Power
Supply Module. Status LEDs on the Main Control Module, Functional
Modules, and Power Supply Module indicate the status of the system.
Functional Modules
Ejectors
Main
Control
Module
LEDs
CONT
PRI-8
MG-323
AUDIO
AUDIO
VIDEO
VIDEO
VIDEO
VIDEO
Critical
POLYCOM
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Major
Minor
L0
MGC-50
Active
Active
Active
Active
Active
Active
Active
Active
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Power
L1
L2
L3
PWR
OUT
Floppy Disk Drive
COM Port
Figure 4-6: MGC-50 front panel
4-7
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Figure 4-7 shows the rear panel of the MGC-50. I/O cards are inserted via the
rear panel. The rear panel also provides access to the fans, power supply
module, network connections, additional communications ports, the main
power switch, AC inlet, and fuse.
Slot A
Main Control
Module Cover
IO Card
COM 1
LAN
Fuse
Main Switch
Fan
AC Inlet
RJ45
Connector
Figure 4-7: MGC-50 rear panel with external connector
4-8
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Figure 4-8 shows the top view of the inside of the MGC-50. The Main
Control Module, Functional Modules, and I/O cards are all connected to the
Backplane. The Power Supply Module is located underneath the Main
Control Module and the Functional Modules, and is connected by wire
leading to the backplane.
REAR
Backplane
I/O Cards
Main Control
Module
Function Modules
FRONT
Figure 4-8: MGC-50 top (inside) view
4-9
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Main Control Module
The Main Control Module performs the functions of conference setup,
conference teardown, and resource allocation in both the MGC-100 and the
MGC-50. The Main Control Module has an Intel-based Pentium processor, a
hard disk drive and 256 MB of memory. To enable 2000 reservations, the
MCU Main Control Module must contain at least 128 MB of memory.
The front LED’s indicate the status if the module is in operation and
functioning properly.
Figure 4-9 shows a block diagram of the Main Control Module.
Figure 4-9: Block diagram of MCM
4-10
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
The MGC unit can contain different types of IP network cards. The Main Control
Module operating system includes drivers for all of the cards. The Main Control
Module’s operating system automatically detects the card type. If the card is
correctly identified, the system starts up correctly. If the system fails to detect
any card type, it will start up according to the card type definition in the
system.cfg file.
The Main Control Module includes several connectors. These are connected
to ports on the chassis. Two types of connectors on the rear panel provide
connections from the MGC to various external systems. These systems
include reservation systems, local or remote operator consoles, management
systems and billing systems. One connector is a standard Ethernet LAN
interface, which support operator workstations operating on LANs via TCP/
IP. The other connector is an RS-232 interface, which is used for local
diagnostics and production purposes.
An RS-232 interface connector on the front panel is provided for connecting
to operator workstations locally or remotely (via a modem). The connector is
used for local diagnostics and production purposes.
The Main Control Module Control Bus connects to the Functional Modules.
The C8M provides the interface between the Main Control Module and the
Backplane. This module also generates the MCU clock. The operating system
running on the Main Control Module uses the Processor’s internal clock
interrupts to set up its real-time clock. Sometimes, the operating system’s
clock may skip one or several interrupts resulting in a time difference
between the two clocks. In such a case, the operating system compares the
two clocks. When a discrepancy between the two clocks is detected, the
operating system updates its clock according to the Main Control processor’s
clock. This feature ensures that long-term reservations start on time.
This feature does not correct any time difference between the MGC Manager’s
clock (which is derived from the Windows operating system run on the operator
workstation) and the MCU internal clock.
4-11
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
MGC-50/100 Control Unit with Removable Hard Drive
As an option the Control Unit (CU) can be supplied with a removable Hard
Drive. The Hard Drive is pre-configured for either XPEK or pSOS Operating
Systems. This Control Unit does not include a floppy disk drive.
•
•
MGC Manager versions 6.11 and 7.0.2 also can support the removable
Hard drive.
It is possible to configure several removable Hard drives for a single MCU.
Sharing Hard Drives between two different MCU’s is not possible due to the
different cards, network services and reservations. However, if you need to
move a drive to another MCU contact Polycom support.
The following sections describe the steps required to install the removable
hard drive.
Removing the Control Unit from the MCU
The Control Unit is not hot swappable.
Use the following procedure for both the MGC-100 and the MGC-50 to
replace the Control Unit:
1. Exit the MGC Manager application.
2. Switch OFF the main power switch on the rear panel and disconnect the
power cord from the power source.
3. Remove the cover at the rear of the MCU.
4. Disconnect the following cables from the Control Unit:
•
The LAN (RJ-45) and Dongle (RS-232 Serial) cable connections
5. From the front of MCU, unscrew the four screws that secure the Control
Unit to the chassis.
A modem may be connected to the RS-232 port on the front panel of the
Control Unit. If present, disconnect.
4-12
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
6. Use the plastic ejectors to pull the Control Unit out of its slot.
7. Slide the Main Control Unit out through the front panel and remove the
Control Unit from the MCU.
Control Unit Installation
Installing the Control Unit on the MCU:
1. Ensure that the MCU is OFF, and the power cord is disconnected.
2. Slide in the new Control Unit, making sure that no internal cables block
or are damaged in any way.
3. Push the Control Unit firmly into the backplane slot and make sure it’s
properly seated in its slot.
4. Tighten the four screws that attach the Control Unit to the MCU chassis.
5. Reconnect disconnected cables to the Control Unit.
4-13
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
6. Attach the rear panel back on the chassis.
power switch on the rear panel.
8. Open the MGC Manager application.
9. Configure the MCU’s IP Address as specified in the First Entry IP
Configuration section below.
IP Configuration Change
For more information see “IP Configuration Change on XPEK and pSOS OS”
on page 2-35 of this manual.
Hard Drive Operation
The removable Hard Drive is not hot swappable. Insertion or removal of the
Hard Drive requires MCU Shutdown.
Turning the hard drive key when the MCU is ON can result in Hard Drive failure.
4-14
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Inserting the Hard Drive
1. Make sure the MCU is OFF and insert the Hard Drive into its slot.
Check that the Hard Drive is firmly locked into place.
2. Turn the key counter clockwise to lock the Hard Drive.
3. Turn ON the MCU.
The LED activates on the Hard Drive’s panel after MCU startup.
4. In normal mode the Hard Drive 7- segment LED is set to 0
When the LED does not display 0, contact support.
7-segment LED
Removable disk
Hard Drive Key
Figure 4-10: Removable Hard Drive Front Panel View
Removing the Hard Drive
1. Make sure the MCU is OFF.
2. Insert the key into the Key Lock and turn the key clockwise to unlock the
Hard Drive.
3. Firmly push the Eject button.
The Hard Drive is released from the drive’s housing.
4-15
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
4. You can now remove the Hard Drive by sliding it out from its housing.
Hard Drive Limitations
•
•
•
The XPEK or pSOS change function requires changing pre-configured
Hard Drives
IP Change can only be implemented as described in the procedure: “IP
Configuration Change on XPEK and pSOS OS” on page 2-35
Disk Rescue cannot be performed on a Control Unit with pSOS
Operating System
4-16
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Backplane
The Backplane is based on the “universal slot” concept, where any card can
be inserted in any slot. Therefore, different configurations are formed based
on the users’ port capacity and functionality requirements. The Backplane
supports hot swapping of Function Modules and I/O cards.
In the MGC-100, the front of the Backplane contains 16 slots for Functional
Modules and an additional slot (Slot A) for the Main Control Module. The
back of the Backplane contains 17 slots for I/O cards (16 slots for I/O and one
“dummy” slot). The Network Interface Modules connected via the Backplane
to I/O cards, which connects the system to the network. The Power Supply
Module provides power to the Backplane via a power bus.
Backplane
H.323 I/O
H.323 Network I/F
Rear
ATM I/O
ATM Network I/F
NET I/O
ISDN Network I/F
MUX
MUSIC I/O
Audio
Video
Data
Main Control
Module
Front
Power Supply
Module
Figure 4-11: MGC-100 Backplane
4-17
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
In the MGC-50, the front of the Backplane contains eight slots for Functional
Modules and an additional slot (Slot A) for the Main Control Module. The
back of the Backplane also contains eight slots for I/O cards and one
“dummy” slot. The Network Interface Module is connected via the Backplane
to I/O cards, which connect the system to the network. The Power Supply
Module provides power to the Backplane via a power bus.
Backplane
MPI Serial Network I/F
H.323 I/O
H.323 Network I/F
Rear
ATM I/O
ATM Network I/F
NET I/O
ISDN Network I/F
MUX
MUSIC I/O
Audio
Video
Data
Main Control
Module
Front
Power Supply
Module
Figure 4-12: MGC-50 Backplane
Control Bus
The MGC-100 and the MGC-50 use the same Control Bus. The Control Bus
connects the Main Control Module to the Functional Modules. The Control
Bus is an HDLC bus. A double bus is implemented for redundancy.
4-18
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Information Highway
The Information Highway is a high capacity TDM-type bus. It is used by both
the MGC-100 and the MGC-50. The Information Highway transfers
information from the Network Interface Modules to the MUX Modules and
from the MUX Modules to the Audio, Video and Data Modules except during
IP calls. In IP calls (H.323 and SIP) the information is transferred directly to
the IP network module and from there to the Audio, Video and Data modules.
Powerplane
The MGC-100, as opposed to the MGC-50, uses a Powerplane. Up to three
Power Supply Modules can be plugged into the Powerplane. The Powerplane
and Power Supply Modules are designed to accommodate hot swapping of
power supplies.
In the MGC-50, there is one power supply, which is connected to the backplane
and fans via wire leads.
4-19
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Power Supply Module
Both MGC units (MGC-100 and MGC-50) operate at 100-240 volts
AC 50/60 Hz.
Power Module in the MGC-100
Up to three redundant power supplies (N+1) provide backup for the system to
ensure multipoint service is not interrupted as a result of any single power
supply failure. The Power Supply Modules are hot swappable and connect to
the Powerplane, which is part of the Backplane.
The power supply automatically senses the AC input voltage.
One Power Supply Module is required to power a partially populated system.
Two Power Supply Modules are required to power a full system or a partially
populated system with power supply redundancy.
Three Power Supply Modules are required to power a full system with power
supply redundancy.
The capacity of each power supply module is shown in Table 4-1.
Table 4-1: MGC-100 Power supply modules capacity
Voltage (V)
Maximum current (Amp.)
5
90
5
12
-12
1
The MGC-100 can accommodate a -48 volt DC power supply. The
mechanical design does not allow 48V power supply modules to be inserted
into a system designed for AC input, or AC power supply modules to be
inserted into a system designed for 48V DC input.
4-20
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Power Module in the MGC-50
In the MGC-50, the Power Supply Module is not hot swappable. The power
supply automatically senses the AC input voltage.
The capacities of the power supply module are shown in Table 4-2, “MGC-50
Power supply module capacity”.
Table 4-2: MGC-50 Power supply module capacity
Voltage (V)
Maximum current (Amp.)
5
120
2
12
-12
.5
Power Supply Cord
The MGC-100 and the MGC-50 may only use power supply cords supplied
by Polycom Inc.or a equivalent UL approved cable, rated at a current of up to
15 Amp., depending on country standards, for AC power supply. The
following specifications are for both the MGC-100 and MGC-50.
For the DC power supply in the MGC-100, use the AWG 10 three wires
cabling. The following color scheme is used in the connection:
•
•
•
Black for “-48VDC”
Red for “RETURN -48VDC”
Green or yellow-green for “Protective Ground’
4-21
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Fuse/Circuit Breaker (AC Power)
Currently, MGC-100 Control Units come equipped with a circuit breaker.
Previous models on the MGC-100 use one UL approved circuit breaker. The
specifications of the fuse are shown in Table 4-3.
The MGC-50 uses one UL approved fuse, Schurter Type no. 0001.1015. The
specifications of the fuse is also shown in Table 4-3.
Table 4-3: Fuse specifications
Previous MGC-100
Control Units without
circuit breakers
MGC-50 Specifications
Voltage (V)
Size
5 * 20mm
5 * 20 mm
Type
Rating
Quick acting - F
10A, 250V
Quick acting - F
12.5A, 250V
Fans
Three fans are mounted at the bottom of the rear panel on the MGC-100. Each
fan has an alarm, which is monitored by that Main Control Module. The
system generates an alert upon failure.
Two fans are mounted at the bottom of the rear panel on the MGC-50.
Alarms Port
In the MGC-100, the main control module includes an Alarms port. The dry
contacts on the rear panel of the MGC-100 are for connecting to the
customer’s alarms system. The Alarms port has the following specifications:
Voltage rating: 60 V DC maximum
Current rating: 0.2 A maximum
For the MGC-50, no Alarms ports are in use.
4-22
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Functional Modules
The Functional Modules (cards) perform the various audio, video, and data
processing functions for the MGC unit. Both the MGC-100 and the MGC-50
use the same functional modules.
The MGC-100 unit houses up to sixteen Functional Modules, which can
occupy slots 1 through 16.
The MGC-50 unit houses up to eight Functional Modules, which can occupy
slots 1 through 8.
The LED’s on the front of each Functional Module indicate the status of
operation and whether it is functioning properly. Functional Modules are
installed via the front panel of the MGC unit. A connector at the rear of each
function al module connects the module to the backplane. Any module can be
inserted into any slot. All Functional Modules are front-removable and hot
swappable.
Table 4-4 lists the available Functional Modules.
Table 4-4: MGC Functional Modules Description
Functional Module
Function
Port capacity
Interfaces between the MGC
unit and the ISDN network.
46 channels/60
channels
Net-T1/Net-E1 ISDN
Network Interface
Net-2 ISDN/T1-CAS
Network Interface
Interfaces between the MGC
unit and the ISDN network or
T1-CAS lines.
46 channels/60 ISDN
channels or 48 T1-CAS
channels
Net-4ISDN//T1-CAS Interfaces between the MGC
92 channels/120 ISDN
channels or 96 T1-CAS
channels
Network Interface
unit and the ISDN network or
T1-CAS lines.
Net-8 ISDN/T1-CAS
and Net-8L ISDN
Network Interface
Interfaces between the MGC
unit and the ISDN network or
T1-CAS lines.
184 channels/240
ISDN channels or 192
T1-CAS channels
ATM-25 Network
Interface
Interfaces between the MGC
unit and the ATM network.
10 ports
ATM-155 Network
Interface
Interfaces between the MGC
unit and the ATM network.
20 ports
4-23
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Table 4-4: MGC Functional Modules Description
Functional Module
Function
Port capacity
MG323
IP24
Audio, video and data
communications across
IP based (LAN) networks,
including the Internet.
•
•
•
12 channels at 128,
256 and 384Kbps
Enables Audio, video and
data communications across
IP based (LAN) networks,
including the Internet.
48 channels at
128Kbps
IP48
Enables Audio, video and
data communications across
IP based (LAN) networks,
including the Internet.
96 channels at
128Kbps
IP+12
Perform signaling and
32 channels at
128Kbps
capabilities exchange for
conferencing. Encrypted
conferences with IP
participants, SIP sessions
and mixed component
conferences that include SIP
participants require IP+ cards
IP+24
Perform signaling and
48 channels at
128Kbps
capabilities exchange for
conferencing. Encrypted
conferences with IP
participants, SIP sessions
and mixed component
conferences that include SIP
participants require IP+ cards
IP+48
Perform signaling and
96 channels at
128Kbps
capabilities exchange for
conferencing. Encrypted
conferences with IP
participants, SIP sessions
and mixed component
conferences that include SIP
participants require IP+ cards
4-24
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Table 4-4: MGC Functional Modules Description
Functional Module
Function
Port capacity
MPI-4
Uses dialing protocols to
communicate to endpoints
using “Data Terminal
Equipment” (DTE), or Data
Communications Equipment
(DCE).
120 channels/92
channels
MPI-8
Uses dialing protocols to
communicate to endpoints
using “Data Terminal
Equipment” (DTE), or Data
Communications Equipment
(DCE).
240 channels/184
channels
Audio (Standard)
Performs audio compression,
decompression, and
bridging.
•
•
12 ports per card
(standard
conference)
Audio Bridge: 16
participants, or 30
participants (Large
Video Switching
conference)
Audio+
Performs audio compression,
decompression
•
Audio+8A - 24/48
ports
•
•
Audio+8V - 24 ports
Audio+12/24 - 12/
24* ports
•
•
Audio+24/48 - 24/
48* ports
Audio+48/96 - 48/
96* ports
* video/audio
conferences
Video
Performs video processing
and Transcoding.
•
•
Single – 6 ports
Double – 12 ports
Video+
Performs video processing
and Transcoding.
Up to 8 participants
4-25
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Table 4-4: MGC Functional Modules Description
Functional Module
MUX Module
Function
Port capacity
Multiplexes and
Up to 16 ports
demultiplexes audio, data,
video, and control
information; performs
channel aggregation (inverse
multiplexing).
MUX+10
Multiplexes and
demultiplexes audio, data,
video, and control
18 channels at
128Kbps
information; performs
channel aggregation,
enables Encryption.
MUX+20
Multiplexes and
demultiplexes audio, data,
video, and control
128 36 channels at
128Kbps
information; performs
channel aggregation,
enables Encryption.
MUX+40
Multiplexes and
demultiplexes audio, data,
video, and control
72 channels at
128Kbps
information; performs
channel aggregation,
enables Encryption.
Data Module
Performs data routing and
conference control.
•
•
T.120 standard card
- 12 ports
T.120-24 card - 24
ports
The different types of Functional Modules are used to produce a variety of
configurations. In the MGC-50 up to eight individual Functional Modules can
be used to build the desired configuration. In the MGC-100, 16 modules can
be used.
Figure 4-12 shows the general design of the Functional Modules. The
components that are common to all Functional Modules are shown in detail in
the figure and are described in Table 4-5 on page 4-27.
4-26
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Figure 4-13: General module architecture
Table 4-5: Common functional module components
Component
Description
The Card Manager processor.
Provides the interface for the Control bus.
Card Manager
HDLC Interface
Watch Dog
Represents the Watch Dog, power control, and reset
switch.
Represents the RAM for processor general use and
the flash for the card CPU’s software and module
specific information such as serial number.
Memory
The Functional Modules are described in detail in the following segments.
4-27
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Net-E1/Net-T1 ISDN Network Interface Module
The Net-E1/Net-T1 ISDN Network Interface module provides the interface
between the MGC unit and the ISDN network. It supports up to two PRI
in each MGC unit serves as the “master clock,” which synchronizes the
system clock to the ISDN network clock. The second module provides a
Two types of Net-E1/Net-T1 ISDN Network Interface modules are available:
•
The NET- T1 Network Interface Module supports channels at data rates
of Nx56/64 Kbps to 1536 Kbps. The module provides channel allocation
options as described in Table 4-6
•
The NET- E1 Network Interface Module supports channels at data rates
of Nx56/64 Kbps to 1920 Kbps. The module provides channel allocation
options as described in Table 4-7.
Table 4-6: NET-T1 channel allocation
Line type
Channel allocation
Signaling supported
23x56/64 Kbps
multimedia channels;
64 Kbps D-channel
signaling
Variety of North American
signaling protocols
including AT&T, 4ESS,
5ESS and Northern
Telecom DMS-100 and
DMS-250
ISDN
Point-to-point leased
Transmission without
signaling
Table 4-7: NET-E1 channel allocation
Line type
Channel allocation
Signaling supported
23x64 Kbps multimedia
channels; 64 Kbps D-
channel signaling
Euro-ISDN Standard (ETSI
NET 5)
ISDN
Point-to-point leased
Transmission without
signaling
4-28
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
TDM Interface
ATM
ATM Hardware
MVIP
ATM-MVIP Card
ISA Interface
Front
Panel
LEDs
Watch
Dog
Card
Manager
Memory
HDLC Interface
Figure 4-14: Net-E1/Net-T1 ISDN Network Interface Module
4-29
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
The Net-E1/Net-T1 ISDN Network Interface Data Stream
Figure 4-14 shows a block diagram of the network interface of the MGC unit.
Telephone
Network
Lines
RJ45
Backplane
Span A
Net I/O
ISDN
LEDs
Connector
MVIPInterface
RJ45
Span B
NET
A
B
ISA Right Angle
Board Connectors
ISDN-PRI ISA Card
Network Interface Module
LEDs
Figure 4-15: Net-E1/Net-T1 ISDN Network Interface block diagram
The Net-E1/Net-T1 ISDN Network Interface Module is connected to the
telephone network via the Net I/O card, which is connected to the PABX and
then the CSU. The customer supplies the PABX and the CSU. The Net-E1/
Net-T1 Network Interface Module includes the ISDN PRI-ISA that supports
either ISDN-T1 or ISDN-E1.
The ISDN data stream flows from the ISDN telecommunication network
through the PABX > CSU > MGC RJ-45 input connector > Net I/O card >
Backplane connectors > Network Interface Module > the ISDN PRI ISA card
to the Backplane information bus.
4-30
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Net-2/Net-4/Net-8/Net-8L ISDN and Net-2/Net-4/Net-8 T1-CAS
Network Interface Module
The Net-2/Net-4/Net-8/Net-8L ISDN Network Interface module provides the
interface between the MGC unit and the ISDN network. The Net-2/Net-4/
Net-8 T1-CAS Network Interface module provides the interface between the
MGC unit and T1-CAS lines.
The same type of card can be used to connect ISDN lines or T1-CAS lines.
However, you cannot connect ISDN lines and T1-CAS lines to the same network
card.
respectively. The IO-8 card contains connections of up to eight PRI spans, of
either an E1 or T1 line and it can work with both types simultaneously. When
the Net-2/Net-4/Net-8 card is used for T1-CAS lines, only T1 spans are
connected to the IO card.
Different types of ISDN and T1-CAS Network Interface Modules can be
installed. For more details, see “MGC Functional Modules Description” on
page 4-23.
The module’s front panel includes two, four or eight tri-color LEDs
(depending on the card’s configuration). Depending on the states of the LEDs
inputs, the LED can be off, green, red or yellow. The red and yellow states
indicate alarms.
NET-8
NET-2
NET-4
Stby
Fail
Stby
Fail
Stby
Fail
Active
Active
Active
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
Line 8
Line 1
Line 2
Line 3
Line 4
Line 1
Line 2
4-31
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
TDM Interface
TDM I/F
PHYI/F
FRAMER
Front
Panel
LEDs
COM
Processor
Card
Manager
DPR
Watch
Dog
HDLC Interface
Figure 4-16: Net-2/Net-4/Net-8 ISDN/T1-CAS and Net-8L ISDN Network Interface
Module
4-32
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
The Net-2/Net-4/Net-8 ISDN/T1-CAS Network Interface Data Stream
Figure 4-16 shows a block diagram of the Net-2/Net-4/Net-8/Net-8L network
interface of the MGC unit.
RJ45
Span A
ISDN
RJ45
Span B
Telephone
Network
Lines
Backplane
IO-2
IO-4
NET
A
B
IO-8
IO-4
IO-2
Figure 4-17: Net-2/Net-4/Net-8 ISDN/T1-CAS and Net-8L ISDN Network Interface
Block Diagram
The ISDN Network Interface Module is connected to the telephone network
via the IO card (IO-2, IO-4 or IO-8), which is connected to the PABX and
CSU. The customer is responsible for supplying the PABX and CSU.
The ISDN data stream flows from the ISDN telecommunication network
through the PABX > CSU > MGC RJ-45 input connector > IO card (IO-2, IO-
4 or IO-8) > Backplane connectors > Network Interface Module to the
Backplane information bus.
4-33
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
ATM Network Interface Module
The ATM Network Interface Module provides the interface between the
MGC unit and ATM network. The ATM card may be shipped in two
configurations: ATM-25 Network Interface Module that supports one 25MB
connection using RJ-45 connector and ATM-155 Network Interface Module
that supports one 155MB connection using a fiber optics connector.
The ATM-25 (FVC) Network Interface Module supports up to 10 H.321
endpoints at 2B or 384 Kbps, using First Virtual (FVC) technology.
The ATM-155 (FVC) Network Interface Module supports up to 20 H.321
endpoints at 2B or 384 Kbps, using First Virtual (FVC) technology.
The ATM-25 Network Interface Module is used with the IO-25 card and the
ATM-155 Network Interface Module is used with the IO-155 card.
Figure 4-17 shows the architecture for the ATM Network Interface Module.
The card architecture is identical to both card types.
TDM Interface
ATM
ATM Hardware
MVIP
ATM-MVIP Card
ISA Interface
Front
Panel
LEDs
Watch
Dog
Card
Manager
Memory
HDLC Interface
Figure 4-18: ATM-25 and ATM-155 Network Interface Module
4-34
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
IP and IP+ Network Interface Module
The IP and IP+ Network Interface Modules support participant connections
using H.323 communication standards. The IP+ Network Interface Module
also supports SIP participants.
H.323 is a standard for audio, video and data communications across IP based
(LAN) networks, including the Internet. H.323 allows endpoints to use
multimedia applications without changing the network infrastructure. H.323
also allows device independent communications between different endpoints.
Conference participants therefore do not have to worry about devices and
compatibility.
Session Initiation Protocol (SIP) is an application layer protocol designed to
work over IP networks. SIP can establish, modify, and terminate multimedia
sessions (conferences).
The IP and IP+ modules provide bandwidth management, that ensures that
corporate networks will not be clogged and critical data cannot be disrupted.
Network managers can limit the number of simultaneous IP connections
within their network or the amount of bandwidth available to IP applications.
The IP and IP+ Network Interface modules combine two very different
functions in one board. This interface module is primarily an IP network card,
using H.323 standards for video conferencing, with an added MUX capability
that uses H.320 standards. The IP module design includes an Ethernet
network interface and a heavy processing core to handle data.
An MCU with IP only configuration requires the IP Network interface
module and Audio/Video/Data cards for conferencing. In that case, the IP
module performs the MUX functionality.
A more powerful MCU configuration combines the two network interface
cards to form a gateway. In this configuration, an IP endpoint can participate
in the same conference as an H.320 endpoint.
The IP and IP+ modules also contain an embedded software module that
interfaces between the MCU and the external Gatekeeper.
The different types of IP cards include standard IP and MG323 cards and IP+
cards. The standard IP cards are available in MG323 (IP12), IP24 and IP48
port sub-assemblies.
4-35
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
The IP+ cards are available in IP+12, IP+24 and IP+48 port sub-assemblies.
The following table lists the type of IP card, its version number, its
compatibility with SIP, VoIP and Encrypted conferences and its capacity.
Table 4-1: IP Card Types
IP Card
Name
HWVersion
SIP
Number
VOIP
Call
Encryption
Support of Units
Capacity
MG323
IP24
–
–
+
3
3
3
12
24
96
No
No
1.24/1.41
≥
2.21
≥
IP48
4.23 4.41
≥
IP+12
IP+24
IP+48
+
+
+
1
2
3
32
64
96
4.41
≥
4.41
≥
4.41
≥
The IP cards with 8 MB memory and 12 port capacity are available from
Hardware version 1.24/1.41 and higher.
The IP cards with 16 MB memory and 24 port capacity are available with
IP+ cards are available with version 4.23 and higher.
Conferences that include SIP defined participants require IP+ cards from
version.
Module Port Capacity
The number of participants in a conference is limited by the Line Rates and
conference type. Table 4-2 describes the port capacities of the cards using
different line rates.
Participants connecting through an IP48 card using a line rate of T.120, can
participate in Software Continuous Presence conferences.
4-36
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Table 4-2: IP Participant Types and Line Rate Capacities
Line Rate
Participant
Type
Card Type
128
Kbps
384
Kbps
512
Kbps
768
Kbps
E1/T1
MG323/IP12
Standard Video
participant
12
12
6
6
3
T.120 participant
6
6
6
6
6
6
6
3
SWCP
NA
12
participant
IP24
Standard Video
participant
48
24
12
12
6
T.120 participant
6
6
6
6
6
6
SWCP
NA
24
12
12
participant
IP48
Standard Video
participant
96
48
48
24
12
T.120 participant
24
24
48
24
48
24
24
12
12
SWCP
NA
participant
4-37
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
IP and IP+ Network Interface Module Architecture
The IP and IP+ Network Interface Modules have the same general card
structure as other MGC modules: Card-Manager, TDM interface, and the
functional units.
Figure 4-18 shows the architecture for the IP and IP+ Network Interface
Modules.
TDM Interface
RTP
Memory
System
controller
CPU
FPGA
UART
System
controller
CPU
FLASH
LEDs
Stack Controller
Memory
UART
FLASH
LEDs
10/100
LAN Controller
x3
Front Panel
LEDs
Card
Manager
Memory
Watch
Dog
HDLC Interface
I/O
Figure 4-19: IP and IP+ Network Interface Module architecture
The IP and IP+ modules are accompanied with a LAN-I/O card. The LAN
Ethernet 10/100BaseT is connected via the I/O card at the back of the MCU.
4-38
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
The MPI-8 Network Interface Module
MPI is an acronym for the Multi Protocol Interface card. The MPI-8 is a serial
communications interface card that uses certain protocols to communicate to
endpoints, “Data Terminal Equipment” (DTE), or “Data Communications
Equipment” (DCE). The protocols that it uses are RS-449, RS-530, V.35, and
RS-366, which is a dialing protocol.
The MPI-8 Network Interface Module is connected to the DCE (supplied by
the customer) via the MPI box. The front panel of the MPI-8 network
interface contains two 160-pin connectors.
MPI
Stby
Fail
Active
Connection to the
160-pin connector on
the front panel of the
MPI box
Connection to the
160-pin connector on
the front panel of the
MPI box
Figure 4-20: MPI-8 Network Interface Module front panel
4-39
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Each 160-pin connector can be connected to one 160-pin connector located
on the front panel of the MPI box.
160-pin connector
Converts data from four ports
PORTS
1-4
A
B
A
B
PORTS
9-12
PORTS
5-8
PORTS
13-16
160-pin connector
Converts data from four ports
Figure 4-21: MPI box front panel
Each of the 160-pin connectors on the MPI box interfaces to four serial ports
found on the back of the MPI box. Therefore, each MPI-8 Network Interface
module can be connected to up to eight ports. Each port has two connectors:
37-pin connector and the 25-pin connector. The 25-pin connector is used to
dial to an endpoint over an ISDN switch. (In leased line connection this port
is not used.) The 37-pin connector connects to the serial cable coming from
the DCE.
RS-449 37 pin
D-type
connector
RS-336 25 pin
D-type
connector
Single port
connection
P12
P1
P7
P8
P9
P2
P3
P13
P14
P1
P2
P3
P6
P11
P12
P13
P14
P7
P8
P4
P4
P5
P9
P15
P16
P10
P5
P6
P15
P10
P11
P16
Figure 4-22: MPI box rear panel
4-40
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
MPI-8 Network Interface Data Stream
When the MCU is set as a DTE
The ISDN data stream flows from the ISDN telecommunication network
through the DCE to the serial port (37-pin connector) on the MPI box. The
data is then directed from the 37-PIN connector to the 160-PIN connector,
which gathers data from four different ports, and channels the data stream to
the 160-pin connector located on the MPI-8 front panel. The data is then
converted from serial format to TDM format and flown to the Backplane
information bus.
The master and the Backup clock must be set on spans of the same network
type.
Since this is full duplex communication, the data is also flowing in the
opposite direction. Figure 4-22 shows the data flow on an ISDN data stream.
MPI Box
DCE
Serial
connection
37-PIN
connector
160-PIN
connector
To the 160-PIN connector
on the MPI-8 module
37-PIN connector
T1 ISDN line
(23 channels)
37-PIN
connector
37-PIN
connector
Serial
connection
Figure 4-23: MPI Data Flow when MCU is DTE
4-41
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
When the MCU is set as a DCE
The serial data stream flows from the endpoint (DTE) through the serial
connector entering the MPI box by way of the 37-pin connector. The data is
then directed from the 37-pin connector to the 160-pin connector connected to
and then sent to the backplane information bus. Since this is a full duplex
communication, the data is also bi-directional.
The network clock is enabled only when the span coming from the DCE to the
MCU is active (i.e. handles a call). Therefore, the spans defined as Primary and
Backup clock must be connected first when starting a conference and
disconnected last when terminating the conference.
Figure 4-24, “MPI Data Flow when MCU is DCE” shows the data flow on a
serial connection - the endpoints are connected directly to the MPI Box.
MCU (DCE)
MPI Box
37- Pin
Connector
Endpoint (DTE)
Serial
Connection
37- Pin
Connector
Serial
Connection
160-Pin Cable
Endpoint (DTE)
37-Pin
Connector
Serial
Connection
37- Pin
Endpoint (DTE)
Connector
Serial
Connection
Endpoint (DTE)
Figure 4-24: MPI Data Flow when MCU is DCE
4-42
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
MPI Network Interface Module Architecture
Figure 4-25, “MPI-8 Network Interface module architecture” shows the
architecture for the MPI-8 Network Interface Module.
TDM Interface
Bit Rate I/F #1
Bit Rate I/F #2
PHYI/F
PHYI/F
TDM I/F
Front
Panel
LEDs
Watch
Dog
Card
Manager
HDLC Interface
Figure 4-25: MPI-8 Network Interface module architecture
MUX Module
The MUX Module multiplexes and demultiplexes the audio, video, data, and
control information. Information arrives at the MUX Port in Nx56/64 Kbps
channels formatted according to the ITU-T H.221 standard for framing
(“Frame Structure for a 64 Kbps to 1920 Kbps Channel in Audiovisual
Teleservices”).
H.323 video conferences do not require a MUX card. The H.323 card has a
build in MUX functionality.
4-43
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
The MUX Module receives information in one of the following standard
formats:
•
•
Hyper-channel (or multi-rate ISDN)
Aggregated channel using the BONDING Mode 1 standard from 2
channels of 56/64 Kbps to 30 channels of 56/64 Kbps
•
Aggregated channel using the ITU-T H.221 standard for channels with
data rates of up to 6x56/64 Kbps
The MUX Module supports up to 16 MUX ports. Each MUX port supports
one site.
The MUX Module supports:
•
•
•
Up to 16 ports at low data rates of 128-384 Kbps
Up to 8 ports at medium data rates of up to 768 Kbps
Up to 4 ports at high data rates of up to 1536/1920 Kbps
For operating each terminal at its maximum data rate capacity, the MUX
Module supports mixed rate ports. For example, some ports in a given module
can operate at 128 Kbps while, simultaneously other ports can operate at 768
Kbps.
The MUX module is used in the Greet and Guide mode to store the video
slide, which is displayed to the participants waiting in the Welcome or On
Hold queues.
4-44
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
MUX Module Architecture
Figure 4-25 shows the card architecture of the MUX Module.
TDM Interface
MUX
MUX Hardware
FPGA
LEDs
PAL
MUX
Processor
SRAM
FLASH
DPR
x 4
Front
Panel
LEDs
Card
Manager
Watch
Dog
Memory
HDLC Interface
Figure 4-26: MUX Module
4-45
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
MUX+ Module
The MUX+ card performs multiplexing and demultiplexing of audio, video,
data and control information. The MUX+ card has the same general card
architecture as the MUX card and it includes the same number of processors.
The MUX+ card capabilities include:
•
•
•
Higher capacity
Flexible port allocation
Supports conference encryption
Encryption requires the MUX+ card.
TDM Interface
RTP
FPGA
System
controller
MUX+
Processor
10/100
Memory
LAN Controller
UART
FLASH
LEDs
x4
Front Panel
LEDs
Card
Manager
Memory
Watch
Dog
HDLC Interface
I/O
Figure 4-27: MUX+ 40 Module Card Architecture
Three types of MUX+ cards are available:
•
•
•
MUX+10 with one processor
MUX+20 with two processors
MUX+40 with four processors
4-46
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
The MUX+ card can be installed together with a MUX card in the same
MCU. A conference can run on multiple MUX+ cards, and on both MUX and
MUX+ cards simultaneously (with non-encrypted participants).
The MUX+ handles a variety of Line Rates, aggregation calls (1B to 6B) and
Bonding calls (128 Kbps to E1).
MUX+ Card Properties
A flexible port resource allocation mechanism is available with the MUX+
card and allocates ports dynamically thereby decreasing fragmentation. It
enables the MCU to allocate and free resources according to the conference
requirements without pre-configuring the Line Rate on each card unit.
Figure 4-28: MUX+ Card Participant Properties
When version 7.0 software is installed on the MCU, during system re-start the
MUX+ is recognized as a new type of card and no configuration is required.
The Card Settings dialog box definitions - Common Parameters and MUX
Plus Parameters properties are identical to the MUX card properties.
For more information see the MGC Administrator’s Guide, Chapter 4,
Viewing the MUX Module Specific Properties.
4-47
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
IVR/Greet & Guide Welcome Slide
Up to four video slides can be stored on the MUX+ card, in the same way that
they are stored on the MUX card. In a mixed system with MUX and MUX+
cards, the Welcome slide is downloaded to all MUX/MUX+ cards.
MUX+ Port Capacity
MUX+ resources are allocated at the reservation stage. MUX+ resources are
calculated according to the relative weight assigned to the different line rates.
Using the dynamic allocation mechanism, the MUX+ eliminates
fragmentation and enables better utilization of resources. For example, a
participant connecting at a line rate of E1 requires 10 times more resources
than a participant connecting at a line rate of 128 Kbps.
Encrypted participants always require MUX+ resources and use more
resources than a regular participant as shown in Table 4-3, "MUX+ Cards
Port Capacity."
In a system with only MUX+ cards, both encrypted and non-encrypted
participants resources are allocated and calculated according to the relative
weight assigned to the different line rates during a reservation. For example, a
MUX+40 card can host 72 non-encrypted or 48 encrypted participants in a
conference using a line rate of 128 Kbps.
In a system with both MUX and MUX+ cards, non-encrypted participants are
assigned ports based on available MUX/MUX+ resources, the requested line
rate and MUX card configuration. The resource report mechanism first
allocates resources on the regular MUX card before allocating (non-
encrypted) participants to the MUX+, thereby saving resources on the
MUX+. In this scenario, the allocation mechanism first checks if the MUX is
identical to the card requested line rate configuration. If it is, the system
allocates resources on the MUX card. If not, it will reserve resources on the
MUX+ card, to prevent fragmentation and prevent resources. For example, a
standard MUX card configured to support a line rate of 384 Kbps, a
participant connecting at this identical line rate is reserved on a MUX card.
However, a participant connecting at a line rate of 128 Kbps is allocated a
port on MUX+ card to save resources. If the MUX+ has no resources
available, the participant is re-allocated to the standard MUX card.
4-48
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
The following table details the number of ports available with the MUX+
cards.
Table 4-3: MUX+ Cards Port Capacity
Number of non-
encrypted ports
capacity
Number of
encrypted ports
capacity
Participant Line
Rate
Card type
MUX+10
128
256
384
512
768
T1
18
16
10
10
6
9
9
5
5
3
1
1
2
E1
2
MUX+20
128
256
384
512
768
T1
36
32
20
20
12
4
18
18
10
10
6
2
E1
4
2
MUX+40
128
256
384
512
72
64
40
40
36
36
20
20
4-49
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Table 4-3: MUX+ Cards Port Capacity (Continued)
Number of non-
encrypted ports
capacity
Number of
encrypted ports
capacity
Participant Line
Rate
Card type
768
T1
24
8
12
4
E1
8
4
MUX+ Participant Move Options
The administrator has the option to define move behavior of encrypted
participants by setting the system.cfg flag:
ALLOW_ENCRYPT_IN _PARTY_LEVEL =YES/NO.
When set to YES, participants can move:
•
From an encrypted conference to a non-encrypted conference or another
encrypted conference.
•
From a non-encrypted conference to an encrypted conference or another
non-encrypted conference.
When the ALLOW_ENCYPT_IN_PARTY_LEVEL flag is set to NO, the
participant’s encryption setting must match the conference encryption
setting’s to be moved to the other conference. For example, encrypted
participants can only move from an encrypted conference to another
encrypted enabled conference.
4-50
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
MUX+ Resource Report
MGC-50/100 Resource Report
The Resources Report, displays the total number of MUX+ port resources
available according to the card type, line rate and encryption.
In the example shown here, the system lists the total number of ports
available with the MUX+20 card for both non-encrypted and encrypted
participants, based on their connection line rates. At a line rate of 128 Kbps,
up to 36 non-encrypted and 18 encrypted participants can connect to
conferences. At a line rate of 384 Kbps, 20 non-encrypted and 10 encrypted
participants can connect to conferences running on the MCU.
IP/SIP
In the IP/SIP section of the Resources Report both non-encrypted and
encrypted participants are grouped together.
For example, if one encrypted and one non-encrypted participants using a line
rate of 128 Kbps attend a conference, the resource report displays the sum of
the used resources of both participants together. In this case the non-
encrypted participant is allocated 1 port and the encrypted participant 2 ports,
totalling 3 ports.
4-51
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Audio Module (Standard)
The Audio Module performs audio compression, decompression, and
bridging. The Audio Module also performs transcoding between various
audio algorithms.
The Audio Module supports the following algorithms:
•
•
•
ITU-T G.711 48, 56, and 64 Kbps
ITU-T G.722 48, 56, and 64 Kbps
ITU-T G.728 16 Kbps
Audio Module Port Capacity
The Audio module contains 13 units. The first unit is the Audio Bridge, which
is the controller used for audio mixing of the participants and to identify the
conference speaker. The remaining 12 units (2 to 13) are used to connect the
audio channels of the participants, one unit per codec. Each codec performs
audio coding and decoding. Each codec works with one endpoint and is
capable of using any of the following audio algorithms: G.711, G.722, G.728,
G.722.1 and Siren7.
The module may contain two additional units (14 and 15). These units are
used for Greet and Guide conferences and have to be configured in the
“system cfg.” In such a case, port number 14 is used for music, and port
number 15 is used for the audio message, used in Greet and Guide
conferences.
The Audio Bridge can run four conferences simultaneously, totaling up to 16
participants (4/16). To increase the maximum number of participants to 30
participants set the Audio Bridge to 1/30. If the Audio Bridge is set to 1/30 it
can run only one conference at a time if the conference includes up to 16
participants and not all the resources are used. The audio card can support up
to six gateway sessions with a maximum of 12 participants. To enable the
gateway sessions set the Audio Bridge to 6/12. When set to 6/12, the audio
cards can run only six conferences with two participants (gateway sessions).
The bridge can use units from the same audio card or from different cards.
The Audio cards are set to 4x16 by default, but you can manually change the
configuration to suit the type of conferences that are required in your site.
4-52
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
The following selections can be enabled with the Audio bridge: 1/30, 4/16,
6/12.
•
The total number of conferences that can be run by the MCU is:
Number of Audio modules x 4 number of conferences selected for the
Audio Bridge for each card. For example, if the system contains 2 audio
modules and the Audio Bridge on one card is set to 1/30 and the Audio
Bridge on the second card is set to 4/16, the MCU will be able to run a
maximum of 5 conferences (1x4 + 1x1). If the Audio Bridge on both
cards is set to 4/16, the maximum number of conferences is 8 (2 cards
x4).
•
•
The total number of Audio ports available is:
No. of Audio modules x 12
Maximum number of participants in a conference when the 1/30 option
is selected for the Audio Bridge:
Continuous Presence: 12 video + 18 Audio only participants
•
Maximum number of Gateway sessions when the Audio Bridge is set to
6/12 is:
No. of Audio cards x 6
In addition, a Music I/O card is attached to the rear of the MCU of the Audio
module. For details, see the I/O cards section, “Input/Output Cards” on
page 4-62.
4-53
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Audio Module Architecture
Figure 4-26 shows the architecture for the Audio Module.
TDM Interface
Audio
Audio Hardware
Audio
Codec
DSP
Message
Card
Audio
Bridge
DSP
x 12
DPR
DPR
DPR
x 12
Front
Panel
LEDs
Card
Manager
Watch
Dog
Memory
HDLC Interface
Figure 4-29: Audio Module
4-54
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Audio+ Module
The Audio+ Module performs audio compression, decompression, and
bridging. The Audio+ Module also performs transcoding between various
audio algorithms.
The Audio+ Module supports the following algorithms:
•
•
•
•
•
•
•
•
ITU-T G.711 48, 56, and 64 Kbps
ITU-T G.722 48, 56, and 64 Kbps
ITU-T G.728 16 Kbps
ITU-T G.722.1
ITU-T G.723.1
ITU-T G.729
Siren7
Siren14
The Audio+ module enables the usage of the Interactive Voice Response
(IVR) software component. Interactive Voice Response (IVR) for video
enables video and VOIP conference participants to use the IVR services for
interactive routing to conferences and to perform interactive operations from
their endpoint using DTMF codes. It stores the voice messages used with IVR
Services.
The Audio+ card also enables increased port capacity in Audio Only
conferences. Conferences can include participant handled by one card type -
either standard audio or the Audio+ family.
4-55
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Audio+ Module Architecture
Audio+ represents a new family of audio cards. Audio+ has the same general
card architecture as the audio card, but with a different number of processors.
This has an impact on the number of ports supported by each card.
TDM Interface
Audio
Audio
Module
32 Mbit/s
Link
QIFI
FPGA
Message
module
32 Mbit/s
Links
Audio
Codec
DSP
Audio
Controller
Unit
DSP
x 7
PCI
BUS
Memory
Memory
Memory
Front
Panel
LEDs
Card
Manager
LAN
I/F
PMC
I/F
Data
Module
PCI
BUS
HDLC
I/F
Figure 4-30: Audio+ Module
Audio + Port Capacities
The system’s working mode affects its system capacity: Medium Band
(without Siren14) and Wide Band (with Siren14). The Medium and Wide
Band settings are defined in the system.cfg file.
For Medium Band, the flag is set to
AUDIO_PLUS_FREQUENCYBAND_MODE=MB.
For Wide Band, the flag is set to
AUDIO_PLUS_FREQUENCYBAND_MODE=WB.
4-56
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
The following table details the card capacities according to the Audio
algorithm used in the conference when the MCU is configured to Medium
Band.
Table 4-4: Audio+ card capacity per Audio algorithm - Medium Band setting
Audio Algorithm
G.711
G.722
G.722.1
G.728
G.723.1
G.729
Siren7
Siren14
Card Type
Audio+8A
48
24
24
48
96
24
24
12
24
48
24
24
12
24
48
24
24
12
24
48
24
24
12
48
96
—
—
12
48
96
24
24
12
24
48
Audio+8V
Audio+12/24
Audio+24/48
Audio+48/96
The following table details the card capacities according to the Audio
algorithm used in the conference when the MCU is configured to Wide Band.
Table 4-5: Audio+ card capacity per Audio algorithm - Wide Band setting
Audio Algorithm
Card Type
Audio+8A
Audio+8V
G.711
48
G.722
12
G.722.1
12
G.728
12
G.723.1
12
G.729
—
Siren7
12
Siren14
12
12
12
12
12
12
—
12
12
Audio+12/24 24
Audio+24/48 48
Audio+48/96 96
12
12
12
12
12
12
12
24
24
24
48
48
24
24
48
48
48
96
96
48
48
4-57
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Video Module (Standard)
The Video Module performs video processing and Transcoding. The module
supports the ITU-T H.261 and H.263 standards (“Video Codec for
Audiovisual Services at Px64 Kbps”).
The Video Module supports multiple sites. When using the Continuous
Presence mode of operation, the Video Module combines multiple video
sources to build a video layout image. Depending on the number of
conference participants and the quality of the screen, the MGC supports video
layout configurations of 2, 4, 9, 1+5 and others.
The Video Module performs Transcoding between different compressed
video bit rates to support multiple bit rates on the same conference. The
module performs Transcoding from QCIF to CIF resolution to support
multiple resolution rates in the same conference.
Video Module Architecture
Figure 4-29 shows the architecture for the Video Module.
TDM Interface
Video
Video Hardware
Video
CODEC
Memory
x 6
Front
Panel
LEDs
Card
Manager
Watch
Dog
Memory
HDLC Interface
Figure 4-31: Video Module
4-58
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
The maximum transmission capability of E1 lines (up to 1920 Kbps) can be
used in Transcoding or Continuous Presence conferences. To enable the high
line rate transmission, a newer video card version (version 1.43 and up) must
be installed.
Figure 4-12 describes the various video card versions and their support of 30
frames per second and high bit rate:
Table 4-6: Video card 30 FPS and high bit rate support
Video Card Version
30 FPS Support
High Bit Rate Support
1.20, 1.21, 1.22, 1.23
1.24
—
ꢀ
ꢀ
ꢀ
—
—
—
ꢀ
1.41, 1.42
1.43, 1.44 or higher
If the High Bit Rate flag is set to Yes, and the MCU contains video cards of a
version older than 1.43, the MCU status changes to Major and an appropriate
error message is added to the Faults log. In such a case, the highest line rate
that can be set for the conference is 768 Kbps. If the High Bit Rate flag is set
to No, the high bit rate option is disabled and the highest conference rate is
limited to 768 Kbps.
Video+ Module
The Video+ module supports up to 8 participants per module. In addition
it provides the following features/enhancements:
•
Click&View - A graphical console transmitted to endpoints enabling
the users to change their personalized video layout or conference.
•
Personal Layout - Definition and on-the-fly modification of
individualized participant Continuous Presence layouts. For details,
see Personal Layout
•
Visual Effects - Definition of background colors, frame colors and
frame widths for Continuous Presence layouts. For details, see Visual
Effects
4-59
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
•
Quad Mode Continuous Presence - Additional Continuous Presence
layouts suitable for large conferences, i.e. 4x4.
H.263 video protocol at 30 Frames Per Second
Improved Video Quality
•
•
•
Improved Continuous Presence image quality at high bit rates
(1.52 Mbps)
•
•
No fragmentation - Conferences can be run across Video+ cards
Large Continuous Presence conferences - Conference size determined
only by overall system limitations
•
Improved latency
Video+ Module Architecture
Figure 4-30 shows the Video+ module architecture.
Figure 4-32: Video+ module architecture
4-60
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Data Module
The Data Module performs conference data and control routing for up to 12
participants. The system allows for 12 conferences of one participant each, or
one conference of 12 participants or any combination in between. In T.120
conferences, the data module does the Transcoding. The module supports
various ITU-T T.120 standards for data transfer and application sharing in a
multipoint conference.
The Data Module supports the following standards:
•
•
•
ITU-T T.122/T.125—MCS (Multipoint Communications Service)
ITU-T T.123—Transport Protocol Stacks
ITU-T T.124—GCC (Generic Conference Control)
Data Module Architecture
Figure 4-28 shows the Data Module’s architecture.
TDM Interface
Data
Data Hardware
FPGA
LEDs
PAL
Data
Processor
SRAM
FLASH
DPR
x 4
Front
Panel
LEDs
Card
Manager
Watch
Dog
Memory
HDLC Interface
Figure 4-33: Data Module
4-61
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Input/Output Cards
Input/Output (I/O) Cards connect the Functional Modules to external systems
and networks. The I/O Cards are housed behind the Backplane, opposite the
Functional Modules.
The I/O Cards, which are small and simple, are installed via the rear panel of
the MGC. A connector at the rear of each I/O card connects the card to the
Backplane. 0
The following I/O cards may be installed in the MCU:
•
The NETIO card connects two PRI/Leased connections from the MGC
rear panel to a Net-E1/Net-T1 ISDN Network Interface Module.
•
The IO-2 card connects two PRI/Leased connections from the MGC rear
panel to a Net-2 ISDN/T1-CAS Network Interface Module.
Figure 4-34: ISDN /T1-CAS Network connection for two spans
4-62
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
The IO-4 card connects four PRI/Leased connections from the MGC rear
panel to a Net-4 ISDN/T1-CAS Network Interface Module.
Figure 4-35: ISDN /T1-CAS Network connection for four spans
•
The IO-8 card connects eight PRI/Leased connections from the MGC
rear panel to a Net-8 ISDN/T1-CAS Network Interface Module.
Figure 4-36: ISDN/T1-CAS Network connection for eight spans
4-63
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
•
The IO-25 Card connects one ATM connection from the MGC rear panel
to an ATM-25 Network Interface Module.
Figure 4-37: One 25MB ATM Network connection
•
The IO-155 Card connects one ATM connection from the
MGC rear panel to an ATM-155 Network Interface Module.
Figure 4-38: One 155 MB fiber optics ATM Network connection
4-64
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
•
The LAN-IO Card connects one H.323 connection from the MGC rear
panel to an H.323 Network Interface Module.
Figure 4-39: One H.323 Network connection
•
The Music-IO Card enables importing audio music from an external
source such as a CD player, tape, radio, etc. It includes a Line-in jack and
headphone output. The music is available to all endpoints.
MUSIC
LINE IN
Figure 4-40: Music-IO card
4-65
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Greet and Guide Hardware Kit
When an Audio+ card is active on the MCU, you are not required to install the
Greet and Guide Hardware kit. In the Audio+ card this is replaced by the IVR
functionality (a software module).
If you are upgrading the MCU to the Greet and Guide mode, you need to
install the Greet and Guide hardware kit. The Greet and Guide hardware kit
includes the following:
•
Audio Message daughter card (not necessary if Audio+ card is
installed) – a special daughter card, which is attached to one of the
standard Audio Functional Modules. It stores up to eight audio messages
(four Attended messages and four On Hold messages) that can be played
while the participants wait in the Welcome queue or the On Hold queue.
Only one daughter card per MCU can be installed.
In the Audio+8 card and Audio+15 the voice messages are stored on the cards.
The daughter card serves as a music port only.
•
Music I/O card – an I/O card, which is attached to the rear of the
standard Audio module, on the MCU’s rear panel. It is used to playback
music or recorded messages from an external device such as a tape
recorder or CD player. Only one music card per MCU may be installed.
•
MUX – the video slides are downloaded and stored in the MUX memory.
Up to four slides may be stored in the MUX memory – one per Message
Service. To run Greet and Guide conferences, all MUX modules must be
of the proper hardware version. If required, replace the existing MUX
module by the new version MUX module. For details regarding the
replacement of a functional module, refer to Chapter 5 of the MGC Unit
Hardware & Installation Manual.
4-66
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Installing the Audio Message Daughter Card on the standard Audio
Module
1. Unscrew the screws on the front panel of the MGC unit that secure the
Functional Module.
2. Unlatch the top and bottom latches by pressing up and away the top latch
and down and away the bottom latch.
Top latch
AUDIO
Stby
Fail
Active
Bottom latch
3. Use the plastic latches to pull the Functional Module out of its slot in the
Backplane.
4. Carefully slide the Audio Module out through the front panel.
5. Press firmly the male connector on the Audio Message daughter card
into the slots of the female connector on the Audio functional module
while lining up holes A and B.
Audio Card
Message Extension
4-67
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
Message Card
Male Connector
Audio Card
Female Connector
a
a
b
Line Up Holes
to Secure Cards
b
6. Slide in the Audio module.
7. Push the Audio module firmly into the backplane, making sure it is
properly seated in its slot.
8. Tighten the screws on the front panel of the MGC unit to secure the
Audio module.
Attaching the Music I/O Card to the Audio Module
The Music I/O card is used to attach an external audio device such as a tape
recorder or CD player to playback music or recorded messages to participants
waiting in the Welcome queue during Greet and Guide conferences.
The Music I/O card is inserted in the rear panel of the MGC unit, and it is
attached to the Attended Audio module.
To install the Music I/O card in the rear panel of the MGC unit:
1. Carefully slide the Music I/O card into the slot in the backplane where
the Attended Audio module is inserted in the front.
4-68
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Backplane
H.323 I/O
ATM I/O
H.323 Network I/F
ATM Network I/F
Rear
NET I/O
ISDN Network I/F
MUX
MUSIC I/O
Audio
Video
Data
Main Control
Module
Front
Power Supply
Module
2. Tighten the screws on the rear panel of the MGC unit to secure the Music
I/O card.
Enabling the Audio Message Daughter Card and Music I/O Card in
the MCU Software
Once the Audio Message daughter card and the Music I/O card are installed,
the system automatically identifies them. However, if you are upgrading the
MCU by adding the Message daughter card and the Music I/O card, you may
have to enable them in the MCU software.
4-69
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
1. Select Edit "system.cfg" from the MCU Utils sub-menu.
The SysConfig dialog box opens.
4-70
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
2. Double-click on the GREET_AND_GUIDE line in the Section box.
The Greet and Guide hardware items appear in the Item = Value box.
These values are set according to the Hardware installed in the system.
4-71
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 4 - Hardware Description
4-72
Download from Www.Somanuals.com. All Manuals Search And Download.
5
System Maintenance
The MGC is designed with ease of maintenance in mind. Most components
are hot swappable and are accessible directly via the front panel or the rear
panel.
Each module includes LED indicators, which reflect the state of the module.
The LEDs are located on the front panel of the MGC.
All external connectors are located on the rear panel. The main power switch
is also located on the rear panel.
This chapter contains the following sections:
•
•
•
A description of the controls and LED indicators
Maintenance procedures
Troubleshooting procedures
5-1
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 5 - System Maintenance
Controls and Indicators
MGC Unit Front Panel
The front panel of the MGC unit contains a number of controls, components,
and indicators for using the MGC system. Figure 5-1 and Figure 5-2 show the
front panel of the MGC-50 and MGC-100 and all their elements.
Functional Modules
Ejectors
Main
Control
Module
LEDs
CONT
NET-E1
MUX
MUX
DATA
DATA
NET-8
NET-8
NET-8
VIDEO
VIDEO
VIDEO
VIDEO
AUDIO
AUDIO
AUDIO
AUDIO
Critical
Major
Minor
L0
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
MGC-100
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Active
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Power
L1
Line
Line
A
B
L2
L3
PWR
PWR
PWR
IN OUT
IN OUT
IN OUT
Floppy Disk Drive
COM Port
Figure 5-1: MGC-100 front panel
Power Supply Module Handle
5-2
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Functional Modules
Ejectors
Main
Control
Module
LEDs
CONT
PRI-8
MG-323
AUDIO
AUDIO
VIDEO
VIDEO
VIDEO
VIDEO
Critical
POLYCOM
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Stby
Fail
Major
Minor
L0
MGC-50
Active
Active
Active
Active
Active
Active
Active
Active
Line
Line
Line
Line
Line
Line
Line
Line
1
2
3
4
5
6
7
8
Power
L1
L2
L3
PWR
OUT
Floppy Disk Drive
COM Port
Figure 5-2: MGC-50 front panel
LED Indicators
The following LEDs appear on the front panel:
•
•
8 LEDs on the Main Control Module
3 LEDs on each Functional Module except for the Network Interface
Module which contains additional LED for each PRI span connected to
the system
•
•
2 LEDs for each of the MGC-100 Power Supply modules
1 LED on the MGC-50 Power Supply
5-3
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 5 - System Maintenance
•
7 LEDs on Net-E1/Net-T1 ISDN Network Interface Module, Net-4
ISDN Network Interface Module, ATM Network Interface Module and
H.323 Network Interface Module
•
•
5 LEDs on NET-2 ISDN Network Interface Module
11 LEDs on NET-8 ISDN Network Interface Module
The system uses these LEDs to indicate operating states. The LEDs on the
Net-2/Net-4/Net-8 are tri-color. Depending on the states of the LEDs inputs,
the LED can be off, green, red or yellow. The LEDs on the front panel are
described in Table 5-1.
Table 5-1: Front Panel LEDs
Module
Name
Color
Description
Main Control
Module (top
group)
CRITICAL
Red
A critical fault is detected on the
MGC unit
MAJOR
MINOR
Red
A major fault exists on the MGC
unit
Yellow
A minor fault exists on the MGC
unit
L0
Green
Green
Reserved
Main Control
Module (bottom
group)
POWER
Power Supply is operating
normally.
Only one ISDN/T1-CAS Network
card is installed in the MCU, and
it is configured as the Primary
clock source. The LED is turned
off when no ISDN Network card
is installed.
L1
Green
A second ISDN/T1-CAS
Network module is installed and
configured as the backup clock
L2
L3
Green
Yellow/
orange
LED is active when the MCU is
restarted.
5-4
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Table 5-1: Front Panel LEDs
Module
Name
Color
Description
Functional
Modules
STBY
Green
On during normal operation
(refer to Table 5-2)
FAIL
Red
On when a failure has occurred
(refer to Table 5-2)
ACTIVE
Yellow
On when the module is handling
a conference (refer to Table 5-2)
Net-E1/Net-T1
ISDN, ATM and
H.323 Network
InterfaceModule
(additional
LINE A
LINE A
LINE B
LINE B
Yellow
Red
Span A yellow alarm (RAI)
Span A red alarm (LOS)
Span B yellow alarm
Span B red alarm
Yellow
Red
LEDs)
Net-2 Network
InterfaceModule LINE 2
(additional
LINE 1/
Off
Span x is not in use
Span x is OK
Green
Yellow
Red
Span x yellow alarm (RAI)
Span x red alarm (LOS)
LEDs)
Net-4 Network
InterfaceModule LINE 2/
(additional
LEDs)
LINE 1/
Off
Span x is not in use
Span x is OK
Green
Yellow
Red
LINE 3/
LINE 4
Span x yellow alarm (RAI)
Span x red alarm (LOS)
Net-8 Network
InterfaceModule LINE 2/
(additional
LEDs)
LINE 1/
Off
Span x is not in use
Span x is OK
Green
Yellow
Red
LINE 3/
LINE 4/
LINE 5/
LINE 6/
LINE 7/
LINE 8
Span x yellow alarm (RAI)
Span x red alarm (LOS)
Power Supply
Module
IN/OUT
Green
Power-in from mains is OK. DC
power out to backplane is OK.
5-5
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 5 - System Maintenance
The three Functional Module LEDs function as a group. Each state of the
Functional Module and its associated LED array is described in Table 5-2.
The (IDLE, ACTIVE, FAILURE, and PARTIAL FAILURE) states are the
operational modes of the Functional Module. The (RESET, WAITING FOR
MCMS and LOADING SOFTWARE) indicates the stages during the startup
procedure of the Functional Module.
Figure 5-2: Function Module LEDs
Module State
STBY
ON
FAIL
ACTIVE
IDLE—Ready, but not used in a
conference
OFF
OFF
ACTIVE—Used in one or more
conferences
ON
OFF
ON
FAILURE—Error state; board is
out of operation
OFF
ON
ON
OFF
PARTIAL FAILURE—Error state;
part of board is out of operation
Flashing
ON/OFF
RESET—Board is in Reset state
TEST—Power-on self test
ON
ON
ON
OFF
OFF
Flashing
OFF
WAITING FOR MCMS—Waiting
for MCMS to start loading software
Flashing
Flashing
LOADING SOFTWARE
ON
Flashing
OFF
5-6
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
MGC Unit Rear Panel
The rear panel of the MGC-100 and MGC-50 contains a number of controls
for using the MGC unit. Figure 5-3 AND Figure 5-4 show the back panel and
labels all elements of the MGC-50/100.
Slot A
Main Control
Module Cover
RS232
Connectors
Network
Connectors
MUSIC
LINE IN
COM
COM
1
ALARMS
LAN
10/100 Mbits
Main Switch
and Circuit Breaker
AC Inlet
Dry Contacts
RJ45 Connector
Fan
Figure 5-3: MGC-100 rear panel controls
The main power switch is used during installation and replacement of the
main control unit only, since all other MGC-100 components are hot
swappable. The switch includes an AC circuit breaker.
5-7
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 5 - System Maintenance
Slot A
Main Control
Module Cover
IO Card
COM 1
LAN
Fuse
Main Switch
Fan
AC Inlet
RJ45
Connector
Figure 5-4: MGC-50 rear panel controls
The main power switch is used during installation, and replacement of fans,
main control module and power supply since the functional modules are hot
swappable. The switch includes an AC fuse.
5-8
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Corrective Maintenance
Corrective maintenance refers to changing or replacing an element of the
system that is faulty. The MGC has several components in which problems
may occur:
•
•
•
Main Control Module
Functional Modules:
Network Interface Modules (ISDN/T1-CAS, ATM, IP and MPI and/or
Serial)
•
•
•
•
•
•
•
MUX and MUX+ Modules
Audio/Audio+ Modules
Video/Video+ Modules
Data Modules
I/O Cards
Power Supply Module
Fans
Warning!
•
All maintenance tasks are to be performed by qualified, authorized
personnel.
•
•
Use only replacement parts supplied by your dealer.
Follow all procedures. Do not skip any steps.
Unless specified differently, the procedures described here are the same for
both the MGC-100 and the MGC-50.
Before replacing parts:
•
To ensure a part needs replacing, complete the troubleshooting
procedures.
•
•
•
Identify exactly which part needs replacing.
Make sure you have the correct replacement part on hand.
Make sure you are using proper ESD equipment, to prevent damage to
the system.
5-9
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 5 - System Maintenance
Replacing a Functional Module
The following procedure is applicable for both the MGC-100 and the MGC-
50. All Functional Modules are hot-swappable and can be replaced with the
system running. Use the following procedure to replace a faulty Functional
Module:
1. Unscrew the screws on the front panel of the MGC that secure the
Functional Module.
2. Use the plastic ejectors to pull the Functional Module out of its slot in the
Backplane.
3. Carefully slide the Functional Module out through the front panel.
4. Slide in the replacement Functional Module.
5. Push the Functional Module firmly into the Backplane; making sure it is
properly seated in its slot.
6. Tighten the screws on the front panel of the MGC that secure the
Functional Module.
Replacing the I/O Cards
The following procedure is applicable for both the MGC-100 and the MGC-
50. The I/O Cards (such as the NETIO card) are hot-swappable and can be
replaced with the system running. Use the following procedure to replace a
faulty I/O Card:
1. Label then disconnect the external connections from the I/O card.
2. Unscrew the screws on the rear panel of the MGC that secure the I/O
Card.
3. Pull the I/O Card out of its slot in the Backplane.
4. Carefully slide the I/O Card out through the rear panel.
5. Slide in the replacement I/O Card.
6. Push the I/O Card firmly into the Backplane; making sure it is properly
seated in its slot.
7. Tighten the screws on the rear panel of the MGC that secure the I/O
Card.
5-10
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
8. Referring to the labels, reconnect the external connections to the I/O
card.
Replacing the Fuse
Use the following procedure for replacing the fuse in the MGC-50:
This procedure is also relevant for earlier versions of the MGC-100. Current
MGC-100 units are provided with a circuit breaker instead of a fuse.
1. If the MCU is working, exit the MGC Manager application and turn off
the MCU. Otherwise, skip this step.
4. Release the latch of the fuse holder and slide the fuse holder out of the
MGC unit.
5. Pull the fuse out of the fuse holder.
6. Insert the new fuse into the fuse holder. Use a fuse that meets the
specifications as defined in see Chapter 4, “Fuse/Circuit Breaker (AC
Power)” on page 4-22.
7. Slide the fuse holder into the MGC unit and push it in firmly to engage
its latch.
8. Connect the power cord.
9. Switch on the power.
Replacing the Power Supply Modules for the MGC-100
(including the NEBS Unit)
The Power Supply Modules are hot swappable and can be replaced with the
system running. Use the following procedure to replace a faulty Power
Supply Module:
1. Unscrew the 4 screws on the front panel of the MGC-100 that secure the
Power Supply Module.
5-11
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 5 - System Maintenance
2. Pull on the handle of the Power Supply Module to pull the module out of
its slot in the Powerplane.
3. Carefully slide the Power Supply Module out through the front panel.
4. Slide in the replacement Power Supply Module.
5. Push the Power Supply Module firmly into the Powerplane making sure
it is properly seated in its slot.
6. Tighten the 4 screws on the front panel of the MGC-100 that secure the
Power Supply Module.
Replacing the Power Supply Module for the MGC-50
The Power Supply Module is not hot swappable and cannot be replaced with
the system running. Use the following procedure to replace a faulty Power
Supply Module:
1. If the MCU is working, exit the MGC Manager application and turn off
the MCU. Otherwise, skip this step.
2. Unplug the MCU from the AC outlet.
3. Using a standard Phillips screwdriver, remove six spring-loaded screws
from the fans cover on the MCU’s rear panel.
5-12
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
4. Optional. Remove the two jack connectors from the fan panel to
completely remove the fans from the MCU.
5. Disconnect the AC input (J1) and the 12V/5V Sense connectors (J2).
6. Disconnect the +5V and -5V power cables using a 9/16” (13 mm) M8 nut
driver.
Tighten the two flat washers; the spring washer and the nut back to their +5V
and -5V screws on the faulty unit to be shipped to the manufacturer. These
items are delivered with the new power supply module.
7. Using a Phillips screwdriver, loosen the six spring-loaded screws on the
front panel of the MGC-50 that secure the Power Supply Module.
PWR
OUT
5-13
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 5 - System Maintenance
8. From the rear, carefully slide the Power Supply Module out through the
front panel and remove.
9. Slide in the replacement Power Supply Module from the front panel and
push it firmly into its place.
10. Tighten the six screws on the front panel of the MGC-50 that secure the
Power Supply Module.
11. Connect the red power cable to the +5V screw and ensure that the nut is
well fastened and secured:
—
—
—
—
—
First install the flat washer.
Next, install the terminal ring of the power cable.
Next, install the second flat washer.
Then, install the spring washer.
Last, screw the nut.
5-14
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
12. Connect the black power cable to the -5V screw in the order described in
step 11 and ensure that the nut is well fastened and secured.
13. Reconnect the AC input (J1) and the 12V/5V Sense connectors (J2).
14. Reposition the fans cover panel on the rear panel. Ensure that the two fan
connectors are in their place and tighten the six screws to secure the fan
cover to its place.
15. Connect the AC power cable to the MCU and turn on the MCU.
The green Power Supply Module LED should be green to indicate that
the MCU power is on.
Fan Replacement for the MGC-100
The fans are hot swappable and can be replaced with the system running. The
fans are located on the rear panel of the MGC-100. Use the following
procedure to replace a faulty fan:
1. Disconnect the cable to the fan.
2. Unscrew the four screws on the rear panel of the MGC-100 that secure
the fan.
3. Remove the fan.
4. Position the replacement fan correctly on the rear panel.
5. Tighten the four screws on the rear panel of the MGC-100 that secure the
fan.
6. Connect the cable to the fan.
5-15
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 5 - System Maintenance
Fan Replacement for the MGC-50
The fans are not hot swappable and cannot be replaced with the system
running. Fans are located on the rear pane of the MGC-50. Use the following
procedure to replace a faulty fan:
1. Exit the MGC Manager application, turn off the MCU and unplug it from
the AC outlet.
2. Using a standard Phillips screwdriver, remove six spring-loaded screws
from the fans cover on the MCU’s rear panel.
Lower the fans cover carefully without tearing the cables to gain access
to its inner side.
3. Disconnect the two connectors of the power supply cable from the inside
of the fan panel. At this point, the fan panel is loose and it may be
removed.
4. From the inside of the fan panel, push the connector panel mount locks
of the faulty fan connector and push the connector to the front of the
panel.
5-16
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
5. Unscrew the four screws on the Fans front panel that secure the faulty
fan to the fan panel.
6. Remove the fan.
7. Position the replacement fan correctly on the rear panel.
8. Tighten the four screws on the Fans front panel that secure the fan.
9. Insert the connector to its place in the Fans panel and ensure that the
panel mount locks are locked.
10. Connect the two connectors of the power supply cable.
11. Reposition the fans cover panel on the rear panel and tighten the six
screws to secure the fan cover to its place.
12. Connect the AC power cable to the MCU and turn on the MCU. Check
the fan is working correctly.
Replacing the Main Control Module
The Main Control Module is not hot swappable. Use the following procedure
for both the MGC-100 and the MGC-50 to replace the Main Control Module:
1. Exit the MGC Manager application, as described in the MGC Manager
User’s Guide.
2. Switch off the main power switch on the rear panel and disconnect the
power cord from the power source.
3. Open the cover of the Main Control Module on the rear panel of the
MGC.
4. Disconnect all internal cables to the Main Control Module.
5. Unscrew the four screws on the front panel of the MGC that secure the
Main Control Module.
6. Use the plastic ejectors to pull the Main Control Module out of its slot in
the Backplane.
7. Carefully slide the Main Control Module out through the front panel.
8. Slide in the replacement Main Control Module.
9. Push the Main Control Module firmly into the Backplane making sure it
is properly seated in its slot.
5-17
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 5 - System Maintenance
10. Tighten the four screws on the front panel of the MGC that secure the
Main Control Module.
11. Reconnect all internal cables to the Main Control Module.
12. Close the cover of the Main Control Module on the rear panel of the
MGC.
13. Connect the power cord to the power source and switch ON the main
power switch on the rear panel.
14. Connect to the MCU via the MGC Manager, as described in the MGC
User’s Guide.
5-18
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
Troubleshooting
The MGC unit provides on-line diagnostics for quick isolation and resolution
of problems. The card status and the MCU's status can be viewed in the
Browser and the Status areas of the MGC Manager main window. The full
messages regarding the cards status can also be viewed in the Status box of
the Card Settings dialog box. For more information, see the MGC
Administrator’s Guide, Chapter 4, “MCU Card Management”.
Faults and errors (usually software) are recorded in the Faults file and can be
viewed in the faults dialog box (accessed from the MCU right-click pop-up
menu). For more details, see the MGC Administrator’s Guide, Chapter 5.
A list of system faults can be viewed via the Faults function. A detailed list of
faults can be found in the MGC Administrator’s Guide, Appendix B.
5-19
Download from Www.Somanuals.com. All Manuals Search And Download.
Chapter 5 - System Maintenance
5-20
Download from Www.Somanuals.com. All Manuals Search And Download.
Appendix A: Interfaces Pin
Assignment
PRI Port Assignment
Pin 8
Pin 1
Table A-1: PRI Port Assignment
Pin
Signal Name
1
2
3
4
5
6
7
8
Receive Ring
Receive Tip
No connection
Transmit Ring
Transmit Tip
No connection
No connection
No connection
A-1
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
RS-232 Pin Assignment
DCD
RxD
TxD
DTR
GND
Pin 1
RI
CTS
RTS
DSR
Figure A-3: RS-232 Pin Assignment
Table A-1: PRI Port Assignment
Pin
Description
1
2
3
4
5
6
7
8
Data Carrier Detect (DCD)
Receive Data (RXD)
Transmit DATA (TXD)
Data Terminal Ready (DTR)
GROUND (GND)
Data Set Ready (DSR)
Clear to Send (CTS)
Ring Indicator (RI)
A-3
Download from Www.Somanuals.com. All Manuals Search And Download.
Appendix A: Interfaces Pin Assignment
Serial Port Connectors Pin out Assignment
SOURCE
PIN
NO.
SIGNAL
DESIGNATION
SOURCE
SIGNAL
DESIGNATION
PIN
NO.
1
2
Shield
Common
DTE
Transmitted Data (B)
Transmit Signal Element (A)
Received Data (B)
Receiver Signal Element Timing (A)
Local Loopback
14
15
16
17
18
19
20
21
22
23
24
25
Return
DCE
Transmitted Data (A)
Received Data (A)
3
DCE
Return
DCE
4
Request to Send (A)
Clear to Send (A)
DTE
5
DCE
DTE
6
DCE Ready (A)
DCE
Return
DTE
Request to Send (B)
DTE Ready (A)
7
Signal Ground
Common
DCE
8
Received Line Signal Detector (A)
Receiver Signal Element Timing (B)
Received Line Signal Detector (B)
Ext. Transmit Signal Element Timing (B)
Transmit Signal Element Timing (B)
Clear to Send (B)
DTE
Remote Loopback
DCE Ready (B)
9
Return
Return
Return
Return
Return
Return
Return
DTE
10
11
12
13
DTE Ready (B)
Ext. Transmit Element Timing (A)
Test Mode
DCE
Figure A-4: RS-530 Pin out (DB-25)
SOURCE
PIN
NO.
SIGNAL
DESIGNATION
SOURCE
PIN
NO.
SIGNAL
DESIGNATION
1
2
Shield
Common
DCE
-
Receive Common
KG Resync (B)
Common
-
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
Signal Rate Indicator
KG Resync (A)
Send Data (A)
3
Send Data (B)
Return
Return
Return
Return
Return
Return
DTE
4
DTE
DCE
DCE
DTE
DCE
DCE
DTE
DCE
DTE
DCE
DTE
DCE
DTE
DTE
DCE
Common
Send Timing (B)
Receive Data (B)
Request to Send (B)
Receive Timing (B)
Clear to Send (B)
Terminal in Service
Data Mode (B)
5
Send Timing (A)
Receive Data (A)
Request to Send (A)
Receive Timing (A)
Clear to Send (A)
Local Loopback
Data Mode (A)
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Return
Return
Return
DTE
Terminal Ready (B)
Receiver Ready (B)
Select Standby
Terminal Ready (A)
Receiver Ready (A)
Remote Loopback
Incoming Call
Signal Quality
DCE
New Signal
DTE
Select Frequency
Terminal Timing (A)
Test Mode
Terminal Timing (B)
Standby Indicator
Send Common
Return
DCE
Common
Signal Ground
Figure A-5: RS-449 Pin out (DB-37)
A-4
Download from Www.Somanuals.com. All Manuals Search And Download.
MGC Hardware and Installation Manual
SOURCE
SIGNAL
DESIGNATION
PIN
NO.
SOURCE
SIGNAL
DESIGNATION
PIN
NO.
Common
Signal Ground
Clear to Send
Data Carrier Detect
Ring Indicator
Unassigned
B
D
F
J
A
C
E
H
K
M
P
S
U
W
Y
Chassis Ground
Request to Send
Data Set Ready
Common
DCE
DTE
DCE
DCE
DCE
Data Terminal Ready
Unassigned
DTE
-
L
-
-
Unassigned
N
R
T
V
X
Z
Unassigned
-
DTE
DTE
DTE
DTE
DCE
DCE
-
DCE
Receive Data (A)
Receive Data (B)
Receive Timing (A)
Receive Timing (B)
Unassigned
Transmitted Data (A)
Transmitted Data (B)
Terminal Timing (A)
Terminal Timing (B)
Transmit Timing (A)
DCE
DCE
DCE
-
-
-
-
-
-
-
Unassigned
BB
AA Transmit Timing (B)
CC
Unassigned
DD
FF
JJ
Unassigned
Unassigned
EE Unassigned
HH Unassigned
KK Unassigned
-
Unassigned
-
Unassigned
LL
-
Unassigned
NN
MM
-
Unassigned
Figure A-6: V.35 Pin out (M-34 Connector)
SIGNAL
DESIGNATION
PIN
NO.
SOURCE
PIN
NO.
SIGNAL
DESIGNATION
SOURCE
1
2
Shield
-
14
15
16
17
18
19
20
21
22
23
24
25
(NB1)
Digit Present
(DPR)
(NB2)
3
Abandon Call and Retry
Call Request
Digit Signal Circuits
(ACR)
(NB3)
4
(CRQ)
(NB4)
5
Present Next Digit
Power Indication
Signal Ground
Unassigned
Reserved for automatic calling equipment
testing. These 2 pins shall not be
wired in the data terminal equipment.
(PND)
Receive Common
Send Common
Unassigned
RC
6
(PWI)
SC
7
(SG)
-
8
-
Unassigned
-
9
-
Data Line Occupied
Unassigned
DLO
10
11
12
13
-
-
-
-
Unassigned
-
Unassigned
Unassigned
-
Unassigned
Distant Station Connected
(DSC)
Figure A-7: RS-366 Pin out (DB-25)
A-5
Download from Www.Somanuals.com. All Manuals Search And Download.
Appendix A: Interfaces Pin Assignment
Cables For the MPI-8 Network Interface Module
There are three new cables for interfacing with the MPI-8 Network Interface
Module in DCE. The difference in the cables is that they have certain pins that
are crossed.
1. Part Number: CON2044A – Adapter RS-449 (BD37) to V.35 (female)
crossed DCE.
2. Part Number: CON 2045A- Adapter RS-449/EIA530 Crossed DCE
(DB37M/DB37F).
3. Part Number: CON2046A- Adapter RS-449/RS-449 Crossed DCE
(DB37M/DB37F).
A-6
Download from Www.Somanuals.com. All Manuals Search And Download.
|