ADTRAN Network Card T3SU 300 User Manual

T3SU 300  
T3 Service Unit  
USER MANUAL  
1200217L1  
T3SU 300  
1200217L2  
1200218L1  
1200219L1  
T3SU 300 with Internal Modem  
HSSI DTE Interface Card  
V.35 DTE Interface Card  
61200217L1-1B  
December 1998  
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ABOUT THIS MANUAL  
This manual is arranged so you can quickly and easily find the information  
you need. The following is an overview of the contents of this manual:  
Chapter 1, Introduction, familiarizes you with T3 networks and T3SU 300  
highlights and gives a brief explanation of options that may be purchased  
for use with the T3SU 300.  
Chapter 2, Installation and Operation, describes the T3SU 300 connectors  
(pin assignments are given in Appendix A), provides installation instruc-  
tions, and explains how to operate your T3SU 300 using the terminal  
interface.  
Chapter 3, Configuration, explains how to access the T3SU 300 Configu-  
ration menu, describes selections made in the Configuration menus, and  
provides a menu tree of all of the available Configuration options.  
Chapter 4, Status, describes each field of the Status menu.  
Chapter 5, Statistics, explains how to access statistical information for the  
T3SU 300 and describes each field.  
Chapter 6, Diagnostics, explains how to diagnose problems using loop-  
back and BERT tests.  
Chapter 7, Applications, provides examples of some common T3SU 300  
applications. This chapter includes network diagrams as well as configu-  
ration tables for each example.  
Appendix A provides pinouts for the T3SU 300 connectors.  
Appendix B contains product specifications.  
Appendix C is a list of acronyms and abbreviations used in this docu-  
ment.  
Appendix D is a glossary.  
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Notes provide additional useful information.  
Cautions signify information that could prevent service interrup-  
tion.  
Warnings provide information that could prevent damage to the  
equipment or endangerment to human life.  
IMPORTANT SAFETY INSTRUCTIONS  
SAVE THESE INSTRUCTIONS  
When using your telephone equipment, please follow these basic safety precautions  
to reduce the risk of fire, electrical shock, or personal injury:  
1. Do not use this product near water, such as near a bath tub, wash bowl, kitchen  
sink, laundry tub, in a wet basement, or near a swimming pool.  
2. Avoid using a telephone (other than a cordless-type) during an electrical storm.  
There is a remote risk of shock from lightning.  
3. Do not use the telephone to report a gas leak in the vicinity of the leak.  
4. Use only the power cord, power supply, and/ or batteries indicated in the manual.  
Do not dispose of batteries in a fire. They may explode. Check with local codes  
for special disposal instructions.  
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FCC regulations require that the following information be provided in this manual:  
1. This equipment complies with Part 68 of FCC rules. On the bottom of the equip-  
ment housing is a label showing the FCC registration number and ringer equiva-  
lence number (REN) for this equipment. If requested, provide this information to  
the telephone company.  
2. If this equipment causes harm to the telephone network, the telephone company  
may temporarily discontinue service. If possible, advance notification is given;  
otherwise, notification is given as soon as possible. The telephone company will  
advise the customer of the right to file a complaint with the FCC.  
3. The telephone company may make changes in its facilities, equipment, opera-  
tions, or procedures that could affect the proper operation of this equipment.  
Advance notification and the opportunity to maintain uninterrupted service are  
given.  
4. If experiencing difficulty with this equipment, please contact ADTRAN for repair  
and warranty information. The telephone company may require this equipment  
to be disconnected from the network until the problem is corrected or it is certain  
the equipment is not malfunctioning.  
5. This unit contains no user-serviceable parts.  
6. An FCC compliant telephone cord with a modular plug is provided with this  
equipment. This equipment is designed to be connected to the telephone network  
or premises wiring using an FCC compatible modular jack, which is Part 68 com-  
pliant.  
7. The following information may be required when applying to the local telephone  
company for a dial-up line for the V.34 modem:  
Service Type  
REN  
FIC  
USOC  
Loop Start (V.34)  
0.8B/ 0.4A  
02LS2  
RJ-11C  
8. The REN is useful in determining the quantity of devices you may connect to  
your telephone line and still have all of those devices ring when your number is  
called. In most areas, the sum of the RENs of all devices should not exceed five.  
To be certain of the number of devices you may connect to your line as deter-  
mined by the REN, call your telephone company to determine the maximum REN  
for your calling area.  
9. This equipment may not be used on coin service provided by the telephone com-  
pany. Connection to party lines is subject to state tariffs. Contact your state pub-  
lic utility commission or corporation commission for information.  
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YEAR 2000 COMPLIANCE  
All ADTRAN transmission hardware and software products have been tested and  
found to be fully compliant with the YEAR 2000 requirements. This is true for all  
models and revisions regardless of the date of manufacture or delivery.  
Users who wish to independently verify that specific products are in compliance may  
contact ADTRAN Technical Support at 1-888-423-8726.  
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FEDERAL COMMUNICATIONS COMMISSION  
RADIO FREQUENCY INTERFERENCE STATEMENT  
This equipment has been tested and found to comply with the limits for a Class A dig-  
ital device, pursuant to Part 15 of the FCC Rules. These 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 fre-  
quency energy and, if not installed and used in accordance with the instruction man-  
ual, may cause harmful interference to radio frequencies. 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 own expense.  
Shielded cables must be used with this unit to ensure compliance with Class A FCC  
limits.  
Changes or modifications to this unit not expressly approved by the par-  
ty responsible for compliance could void the user' s authority to operate  
the equipment.  
CANADIAN EMISSIONS REQUIREMENTS  
This digital apparatus does not exceed the Class A limits for radio noise emissions  
from digital apparatus as set out in the interference-causing equipment standard enti-  
tled “Digital Apparatus,” ICES-003 of the Department of Communications.  
Cet appareil nuerique respecte les limites de bruits radioelectriques applicables aux  
appareils numeriques de Class A prescrites dans la norme sur le materiel brouilleur:  
“Appareils Numeriques,” NMB-003 edictee par le ministre des Communications.  
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CANADIAN EQUIPMENT LIMITATIONS  
Notice: The Canadian Industry and Science Canada label identifies certified equip-  
ment. This certification means that the equipment meets certain telecommunications  
network protective, operational, and safety requirements. The Department does not  
guarantee the equipment will operate to the user s satisfaction.  
Before installing this equipment, users should ensure that it is permissible to be con-  
nected to the facilities of the local telecommunications company. The equipment must  
also be installed using an acceptable methods of connection. In some cases, the com-  
panys inside wiring associated with a single line individual service may be extended  
by means of a certified connector assembly (telephone extension cord). The customer  
should be aware that compliance with the above limitations may not prevent degra-  
dation of service in some situations.  
Repairs to certified equipment should be made by an authorized Canadian mainte-  
nance facility designated by the supplier. Any repairs or alterations made by the user  
to this equipment, or equipment malfunctions, may give the telecommunications  
company cause to request the user to disconnect the equipment.  
Users should ensure for their own protection that the electrical ground connections of  
the power utility, telephone lines and internal metallic water pipe system, if present,  
are connected together. This precaution may be particularly important in rural areas.  
Users should not attempt to make such connections themselves, but should  
contract the appropriate electric inspection authority, or an electrician, as  
appropriate.  
The Load Number (LN) assigned to each terminal device denotes the percentage of  
the total load to be connected to a telephone loop which is used by the device, to pre-  
vent overloading. The termination on a loop may consist of any combination of  
devices subject only to the requirement that the total of the Load Numbers of all  
devices does not exceed 100.  
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Chapter 1. Introduction ..................................................................................................... 1-1  
Product Overview ............................................................................................................... 1-1  
T3 Overview ......................................................................................................................... 1-2  
SNMP .................................................................................................................................... 1-2  
TELNET ................................................................................................................................ 1-3  
Interface Option Cards ....................................................................................................... 1-4  
HSSI Card ...................................................................................................................... 1-4  
V.35 Card ....................................................................................................................... 1-4  
Warranty and Customer Service ....................................................................................... 1-5  
Chapter 2. Installation and Operation ........................................................................... 2-1  
Unpack, Inspect, Power Up ............................................................................................... 2-1  
Receiving Inspection.................................................................................................... 2-1  
Installing the Unit ................................................................................................................ 2-2  
Rackmount Installation ............................................................................................... 2-2  
Desktop Installation..................................................................................................... 2-3  
Rear Panel ............................................................................................................................. 2-3  
DTE Port Interface Card Slots .................................................................................... 2-4  
Alarm Connector.......................................................................................................... 2-4  
DTE Port 1 (HSSI Interface)........................................................................................ 2-5  
Auxiliary Port ............................................................................................................... 2-5  
LAN Port ....................................................................................................................... 2-6  
DS3 Interface................................................................................................................. 2-6  
Front Panel ........................................................................................................................... 2-6  
Control Port .................................................................................................................. 2-6  
LED Descriptions ......................................................................................................... 2-9  
Chapter 3. Configuration .................................................................................................. 3-1  
DS3 Network ........................................................................................................................ 3-2  
DS3 Framing ................................................................................................................. 3-3  
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Table of Contents  
Unit ID ......................................................................................................................... 3-19  
Terminal Timeout....................................................................................................... 3-19  
DS3 Framing ................................................................................................................. 4-2  
Network State ............................................................................................................... 4-2  
Alarm State.................................................................................................................... 4-2  
Data Link State.............................................................................................................. 4-3  
Remote State.................................................................................................................. 4-3  
DTE Ports ..............................................................................................................................4-5  
Interface Type ............................................................................................................... 4-5  
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Bandwidth..................................................................................................................... 4-6  
DTE Leads ..................................................................................................................... 4-6  
Alarm History............................................................................................................... 5-2  
Performance Parameters ............................................................................................. 5-4  
BERT Configuration .................................................................................................... 6-9  
Chapter 7. Applications .................................................................................................... 7-1  
Single Port Full T3 Bandwidth .......................................................................................... 7-1  
Point-to-Point Multiport Application .............................................................................. 7-3  
Fractional T3 Carrier Application ..................................................................................... 7-5  
Remote SNMP Management Application ....................................................................... 7-7  
Appendix A. Pinouts ........................................................................................................ A-1  
Appendix B. Specifications Summary ...........................................................................B-1  
Appendix C. Acronyms/Abbreviations......................................................................... C-1  
Appendix D. Glossary ......................................................................................................D-1  
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Table of Contents  
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Figure 3-6. Example of a Profile Configuration Menu ..................................................3-11  
Figure 5-4. Network Statistics Menu for Current 15-Minute Interval......................... 5-5  
Figure 5-5. Network Port Statistics 24-Hour History Screen ........................................ 5-6  
Figure 5-6. Network Port Statistics Menu (24-Hour Totals).......................................... 5-7  
Figure 6-1. Diagnostics Main Menu.................................................................................. 6-2  
Figure 6-2. DS3 Diagnostics Menu .................................................................................... 6-3  
Figure 6-3. DS3 Payload Loopback Test ........................................................................... 6-4  
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List of Figures  
Figure 6-9. Payload and DTE Loopback Test................................................................... 6-8  
Figure 6-10. BERT Pattern Menu .....................................................................................6-10  
Figure 7-1. Single Port Application ................................................................................... 7-2  
Figure 7-2. Multiport Application ..................................................................................... 7-3  
Figure 7-3. Fractional Application .................................................................................... 7-5  
Figure 7-4. Remote Management Application ................................................................7-7  
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Table 7-3. Configuration Example for Fractional T3 Application ................................ 7-6  
Table 7-4. Configuration Example for Remote Management Application ................. 7-8  
Table A-1. Control and Auxiliary Port Pin Assignments............................................. A-1  
Table A-2. HSSI Interface Pin Assignments ................................................................... A-2  
Table A-3. V.35 Interface Card Pin Assignments .......................................................... A-3  
Table A-4. LAN Port Pin Assignments ........................................................................... A-4  
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List of Tables  
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Chapter 1  
Introduction  
PRODUCT OVERVIEW  
The T3SU 300 is a multiport DSU/ CSU (data service unit/ channel  
service unit) that provides access to T3 services. The unit provides a  
cost-effective, versatile approach for migrating T1 services to T3.  
The TDM (time division multiplexer) multiport design allows you  
to share the cost of a T3 line between multiple applications. This  
unit maximizes the use of T3 services, providing up to four data  
ports capable of transmitting and receiving high-capacity, real time  
data.  
A HSSI (high speed serial interface) port is built in along with three  
slots which accept additional HSSI or V.35 interface cards. The HSSI  
interfaces support rates between 75 kbps and 44.2 Mbps in 75 kbps  
increments. The high speed V.35 interface option supports rates up  
to 10 Mbps in increments of 75 kbps.  
Embedded SNMP (simple network management protocol) and  
TELNET are available through either a SLIP/ PPP or a 10baseT  
ethernet port. Through the Management Information Base II(MIB  
II), RFC 1407 standards, and an ADTRAN enterprise MIB, the  
T3SU 300 can be configured, monitored, and diagnosed using  
standard SNMP network management programs such as Hewlett  
Packards HP OpenView, IBM’s Netview™, and Cabletrons  
Spectrum™.  
Complete configuration, diagnostics, and performance monitoring  
are available through SNMP, TELNET, or a VT 100 terminal  
interface. This connection can be made via ethernet, a local EIA-232  
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Chapter 1. Introduction  
link, or through the built-in V.34 modem (1200217L2 only).  
Advanced dial-out on trap capabilities through the built-in modem  
allow the T3SU 300 to contact remote hosts and alert them to DSX-3  
network conditions (without dedicated management connections).  
The T3SU 300 is designed for either desktop use or installation in a  
19-inch rack.  
The major features or the T3SU 300 are as follows:  
Full feature multiport T3 DSU/ CSU  
Maximum of four user data ports (HSSI or high speed V.35)  
available  
Automatic or manual remote configuration  
Embedded SNMP and TELNET management through 10baseT  
ethernet or SLIP/ PPP  
Detailed performance monitoring for local and remote units  
Simplified configuration through detailed VT 100 terminal  
menu structure  
Optional integrated V.34 modem for dial-up and dial-out  
access (product version 1200212L2 only)  
Standard 5-year warranty  
T3 OVERVIEW  
T3 provides the same bandwidth as 28 T1s and is used to  
interconnect high-speed bridges, routers, front-end processors, and  
data terminal equipment (DTE). T3 service plays a major role in  
Internet backbones and public organizations needing broad  
bandwidth for WAN (wide area network) connectivity.  
SNMP  
The T3SU 300's embedded SNMP feature allows the unit to be  
accessed and controlled by a network manager through either the  
auxiliary (AUX) control port or the 10baseT local area network  
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Chapter 1. Introduction  
(LAN) port. The T3SU 300 supports the MIB-II standard, RFC 1213,  
and the ADTRAN Enterprise Specific MIB.  
MIB files are available from ADTRAN in the support section of the  
ADTRAN Web page at www.adtran.com.  
The term SNMP broadly refers to the message protocols used to  
exchange information between the network management system  
(NMS) and the managed devices, as well as to the structure of  
device management databases. SNMP has three basic components:  
Network Manager  
Control programs that collect, control, and present data pertinent to  
the operation of the network devices. These programs reside on a  
network management station.  
Agent  
Control program that resides in every network device. This  
program responds to queries and commands from the network  
manager, returns requested information or invokes configuration  
changes initiated by the manager, and sends unsolicited traps to the  
manager.  
MIB  
Industry standard presentation of all status and configuration  
parameters supported by a network device.  
TELNET  
TELNET provides a password-protected, remote login facility to  
the T3SU 300 that allows a remote user to control the T3SU 300  
through the terminal menus. Only one TELNET session may be  
active at a time.  
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Chapter 1. Introduction  
INTERFACE OPTION CARDS  
Optional interface cards may be purchased to equip the T3SU 300  
with up to three additional ports. Both HSSI and V.35 interface  
cards are available.  
HSSI Card  
The optional HSSI card plugs into one of the three card slots on the  
rear of the T3SU 300. With optional HSSI cards installed, the total  
44.2 Mbps bandwidth of the T3 can be divided among the total  
number of ports to provide multiple data channels over the T3. The  
total bandwidth of the T3 can be divided among the available ports  
in any fashion, as long as the divisions are on 75 kbps boundaries.  
The HSSI card can be hot inserted or swapped. When it is inserted  
in a slot on the rear panel and its faceplate is secured to the rear  
panel of the T3SU 300 with the integral thumb screws, a PCMCIA  
type connector on the card mates with a compatible connector on  
the main board of the T3SU 300. A standard 50-pin HSSI connector  
is then available for DTE connections. See the section DTE Port  
Interface Card Slots on page 2-4 for more information on installing  
option cards.  
V.35 Card  
The optional V.35 card plugs into the card slots on the rear of the  
T3SU 300 to provide a V.35-type DTE interface. Operation of the  
V.35 card is similar to that of the HSSI card except that the  
maximum bandwidth of the V.35 card is limited to 10 Mbps.  
Like the HSSI card, the V.35 card can be hot inserted or swapped,  
and it installs just as the HSSI card does. Instead of the standard  
HSSI connector, this card contains a standard 34-pin V.35 connector  
for DTE connections. See the section DTE Port Interface Card Slots on  
page 2-4 for more information on installing option cards.  
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Chapter 1. Introduction  
WARRANTY AND CUSTOMER SERVICE  
ADTRAN will replace or repair this product within five years from  
the date of shipment if it does not meet its published specifications  
or fails while in service. For detailed warranty, repair, and return  
information refer to the ADTRAN Equipment Warranty and Repair  
and Return Policy Procedure.  
Return Material Authorization (RMA) is required prior to returning  
equipment to ADTRAN.  
For service, RMA requests, or further information, contact one of  
the numbers listed on the inside back cover of this manual.  
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Chapter 1. Introduction  
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61200217L1-1  
Chapter 2  
Installation and Operation  
UNPACK, INSPECT, POWER UP  
Receiving Inspection  
Carefully inspect the T3SU 300 for any damage that may have  
occurred in shipment. If damage is suspected, file a claim  
immediately with the carrier and contact ADTRAN Technical  
Support (see the back cover of this manual). Keep the original  
shipping container to use for future shipment or verification of  
damage during shipment.  
ADTRAN Shipments Include  
The following items are included in ADTRAN shipments of the  
T3SU 300:  
T3SU 300 unit  
User manual  
An 8-position modular to 8-position modular cable (two of  
these cables are included in the 1200217L1 version)  
An 8-position modular to DB-25 female connector  
An 8-position modular to DB-25 male connector (1200217L1  
version only)  
A 4-position modular to 4-position modular cable (1200217L2  
version only)  
Mounting ears for 19-inch rack installation  
Rubber feet for stand-alone use  
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Chapter 2. Installation and Operation  
The ADTRAN T3SU 300 MIB is available in the support section of the  
ADTRAN Web page at www.adtran.com.  
Customer Provides  
The customer provides an interface cable for each port used. Each  
cable should be either HSSI or V.35.  
Power Up  
Each T3SU 300 unit is provided with a captive eight-foot power  
cord, terminated by a three-prong plug which connects to a  
grounded 115 VAC power receptacle.  
Power to the T3SU 300 must be provided from a grounded 115 VAC,  
60 Hz receptacle.  
INSTALLING THE UNIT  
The T3SU 300 can be used as a desktop stand-alone device or  
mounted into a standard 19-inch equipment rack. See the section  
Establishing Terminal Connection on page 2-6 for information on  
terminal configuration.  
Rackmount Installation  
Follow these steps to mount your unit into a rack:  
1. Install the 19-inch rackmount flanges on each side of the  
T3SU 300 enclosure at one of the three available positions.  
Be sure to install the flanges with the screws provided.  
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Chapter 2. Installation and Operation  
2. After the flanges have been installed, position the T3SU 300 at  
the correct location within the rack and secure the mounting  
flanges to the mounting rails of the rack.  
3. Make all network, DTE, and power connections to the rear of  
the unit.  
4. Using the 8-position modular to DB-25 female connector and  
the 8-position modular to 8-position modular cable, connect a  
VT 100 terminal device to the CONTROL interface jack on the  
front panel of the unit.  
Desktop Installation  
Follow these steps when using your T3SU 300 as a desktop unit:  
1. Affix the four adhesive-backed rubber feet to the bottom of the  
unit, one in each of the four corners. The feet should be placed  
approximately one inch from the front or back and one inch  
from the sides of the unit  
2. Make all network, DTE, and power connections to the rear of  
the unit.  
3. Using the 8-position modular to DB-25 female connector and  
the 8-position modular to 8-position modular cable, connect a  
VT 100 terminal device to the CONTROL interface jack on the  
front panel of the unit.  
REAR PANEL  
The T3SU 300 is equipped with three option card slots, a built-in  
HSSI interface, an alarm output terminal block, an auxiliary (AUX)  
port, a LAN port, and a DS3 interface. Pin assignments for  
connectors are given in the appendix Pinouts on page A-1. The  
T3SU 300 rear panel is shown in Figure 2-1.  
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Chapter 2. Installation and Operation  
AUX  
LAN  
ALARM  
NC COM NO  
DS3 INTERFACE  
RX IN  
TX OUT  
V.35 INTERFACE  
DTE PORT 3  
HSSI INTERFACE  
DTE PORT 2  
DTE PORT 4  
DTE PORT 1  
Item  
On/Off Switch  
Function  
On/off control  
115 VAC Connection Power connection  
DTE Ports 2-4  
Alarm  
DTE Port 1  
Aux  
Interface option card slots  
NC/NO relay contacts  
Integral HSSI interface  
Function depends on product  
version (see page 2-5)  
10baseT LAN connection  
T3 service connection  
LAN  
DS3 Interface  
Figure 2-1. T3SU 300 Rear View  
DTE Port Interface Card Slots  
The T3SU 300 rear panel has three card slots for the installation of  
optional interface cards. To insert cards, perform the following  
procedure:  
1. Remove blank slot cover from the rear of the T3SU 300.  
2. Slide the card into the corresponding rear slot until the card  
panel is flush with the T3SU 300 chassis.  
3. Push in thumbscrews and turn clockwise to secure the card and  
ensure proper connection to the main board of the T3SU 300.  
Alarm Connector  
The alarm connector is a three-position, screw-type terminal block  
that is connected to the three contacts of a Form C-type relay on the  
main board of the T3SU 300. This relay is activated any time the  
T3SU 300 detects an alarm condition on the T3 network interface.  
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Chapter 2. Installation and Operation  
ALARM RELAY  
The alarm function can be disabled through the  
CONFIGURATION  
selection of the  
menu.  
DTE Port 1 (HSSI Interface)  
DTE port 1 is a built-in HSSI port that resides on the main board of  
the T3SU 300. The bandwidth of this port is configurable from 75  
kbps to 44.2 Mbps in 75 kbps increments. When a single application  
requires the full 44.2 Mbps of bandwidth, the T3SU 300 does not  
have to be equipped with additional port cards.  
Auxiliary Port  
The auxiliary (AUX) port is an 8-pin modular jack located on the  
rear panel of the T3SU 300. The function of this port differs,  
depending on which version of the T3SU 300 you have (1200217L1  
or 1200217L2).  
For the 1200217L1 product, this port provides a DTE-type, EIA-232  
asynchronous serial port. This port can be connected to a VT 100  
terminal or to a device running SLIP or async PPP. This port can  
also connect to an external modem to provide dialup VT 100, SLIP,  
SYSTEM  
or PPP. This ports mode and baud rate are selected in the  
MANAGEMENT  
CONFIGURATION  
menu.  
portion of the  
For the 1200217L2 product, the AUX port provides a telephone line  
(POTS) connection for the internal V.34 modem.  
For both versions of the product, the T3SU 300 can be configured as  
a dial-in host and also as a dial-out-on-TRAP device (meaning that  
the unit dials out to a specified host to report error conditions).  
Configuration for both the external (L1) and internal (L2) modem  
DIALUP OPTIONS  
SYSTEM  
menu under the  
parameters is done in the  
MANAGEMENT  
CONFIGURATION  
menu  
portion of the  
CONFIGURATION  
SYSTEM MANAGEMENT  
DIALUP OPTIONS  
-> ).  
(
->  
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LAN Port  
The LAN port is an 8-pin modular connector that provides a  
10baseT ethernet LAN interface. This LAN interface is used for  
SNMP and TELNET control.  
DS3 Interface  
The DS3 network interface is a full-duplex circuit provided by two  
BNC coaxial cable connections. The receive data from the network  
is connected to the RX (In) connector while the transmit data from  
the T3SU 300 is connected to the TX (Out) connector.  
FRONT PANEL  
The T3SU 300 faceplate is shown in Figure 2-2. Descriptions of each  
part of the front panel follow.  
T3SU 300  
IN SERVICE  
CONTROL  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
REMOTE  
ACTIVE  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN TEST  
ALARM  
LOS  
NETWORK  
DTE PORT  
1
DTE PORT  
2
DTE PORT  
3
DTE PORT  
4
Figure 2-2. T3SU 300 Front Panel  
Control Port  
The T3SU 300 has an 8-pin modular jack labeled CONTROL. The  
control port provides connection to a VT 100 EIA-232 compatible  
interface.  
Establishing Terminal Connection  
To control the T3SU 300 using a VT 100 terminal, follow this  
procedure:  
1. Configure the VT 100 terminal for 9600 baud, 8-bit characters,  
no parity, and one stop bit (9600, 8N1).  
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2. Using the ADTRAN-provided terminal interface cable adapter,  
connect the DTE port of a terminal to the 8-pin modular jack  
Control  
labeled  
on the front panel of the T3SU 300.  
3. Initialize the terminal session.  
4. Press Enter repeatedly until the password prompt appears.  
5. Enter the password. The factory default password is adtran.  
MAIN  
The  
menu appears. See Figure 2-3.  
6. Make selections by entering the number corresponding to the  
chosen parameter. Press ESC to return to the previous screen.  
LOGOUT  
MAIN  
from the  
End a terminal session by selecting  
menu or by pressing Ctl-C at any time.  
Figure 2-3. Terminal Main Menu  
Navigating Within the Menus  
Navigate within the T3SU 300 terminal menus using the following  
procedures:  
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If you want to...  
Press...  
select an item  
the number corresponding to your  
choice, and then press the Enter  
key.  
scroll between screens  
the up and down arrow keys. Addi-  
within the same selection tional screens are available when  
<up> or <down> is displayed in the  
right-hand side of the menu.  
return to the previous  
menu  
the ESC key.  
end the terminal session  
refresh the display  
Ctl-C.  
Ctl-R.  
MAIN  
The T3SU 300  
menu consists of the following sections:  
Status  
This selection provides status information on the Network and  
DTE ports. See the chapter Status on page 4-1 for more information.  
Statistics  
This selection provides statistical information for the Network port.  
See the chapter Statistics on page 5-1 for more information.  
Configuration  
CONFIGURATION  
The  
menu is used to set network, DTE, and system  
management parameters. See the chapter Configuration on page 3-1  
for more detailed information.  
Diagnostics  
DIAGNOSTICS  
The  
menu is used to perform loopback and BERT  
tests. See the chapter Diagnostics on page 6-1 for more detailed  
information.  
Remote Login  
REMOTE LOGIN  
The  
selection allows you to configure the remote  
T3SU 300. The remote unit’s password is required at login. The  
DATALINK  
DS3 NETWORK CONFIGURATION  
menu)  
option (in the  
must be enabled in order to perform remote configuration.  
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Logout  
LOGOUT  
The  
selection ends the terminal session and logs out of the  
system. Password entry is required before a new session can begin.  
LED Descriptions  
The T3SU 300 has LED status indicators for remote access, the  
network port, and for each individual DTE port. These LEDs are  
identified as follows:  
Remote Active  
Network LEDs  
This LED is solid when a remote configuration session is taking  
place through a TELNET session or from the remote end T3SU 300.  
It flashes when the unit is being accessed locally through the front  
Control  
panel  
port.  
In Service  
This LED is active when a valid signal is being received on the DS3  
interface.  
In Test  
This LED is active when the network interface has been put in  
loopback by the service provider.  
Alarm  
This LED is active when the DS3 receive signal contains framing  
errors, the yellow alarm is received from the far end unit, or other  
alarm messages are received from the network.  
LOS  
This LED is active when no receive signal from the network is  
detected on the Rx (in) circuit.  
DTE Port LEDs  
Status  
This LED indicates the following conditions:  
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LED  
Condition  
Off  
No option card is installed.  
Flashing green Interface is available but not configured.  
On green  
On red  
Interface is available and configured.  
DTE fault condition (for HSSI interface, no clock  
from DTE).  
On yellow  
For HSSI interface, terminal available (TA) sig-  
nal inactive.  
In Test  
This LED is active when the DTE interface is in a loopback  
condition or is performing a BERT test.  
TD  
This LED is active when the T3SU 300 DTE port is transmitting  
data.  
RD  
This LED is active when the T3SU 300 DTE port is receiving data.  
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Chapter 3  
Configuration  
The T3SU 300 can be configured locally and remotely. Local  
configuration is accomplished through a 10baseT ethernet  
connection, a SLIP/ PPP port, or a VT 100 terminal. Remote  
configuration can take place through the T3 datalink using a local  
T3SU 300.  
CONFIGURATION  
The  
menu consists of the following submenus  
relating to specific interfaces or functions:  
DS3 NETWORK  
DTE PORTS  
SYSTEM MANAGEMENT  
UTILITIES  
SAVE CONFIGURATION  
The Main configuration terminal menu is shown in Figure 3-1. The  
complete configuration menu tree is given at the end of this chapter  
in Figure 3-12. Detailed descriptions of each individual menu  
parameter are given in the following sections. These sections are  
DS3 NETWORK  
DTE  
(page 3-2),  
divided by the five submenus:  
PORTS  
SYSTEM MANAGEMENT  
UTILITIES  
(page 3-4),  
(page 3-11),  
SAVE CONFIGURATION  
(page 3-22), and  
(page 3-24).  
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Chapter 3. Configuration  
Figure 3-1. Configuration Main Menu  
DS3 NETWORK  
1 DS3 NETWORK  
Select  
to access the network configuration  
parameters. Configure the T3SU 300 network settings to match the  
T3 signal received from the service provider. During remote  
DS3 NETWORK  
menu is shown in Figure 3-2. Descriptions of the  
fields follow the figure.  
configuration, this menu is read-only. The  
CONFIGURATION  
DS3 NETWORK  
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Figure 3-2. DS3 Network Configuration Menu  
DS3 Framing  
Set the framing format to match the format of the receive signal at  
the network interface. C-bit parity and M13 framing formats are  
supported.  
Line Length  
DS3 Timing  
Set the line length to reflect the physical length of the DS3 network  
LONG  
SHORT  
if the cabling distance exceeds 50 feet; set to  
line. Set to  
if the distance is less than 50 feet.  
LOOP  
LOCAL  
Set the timing to  
network; set to  
if the T3SU 300 is to derive timing from the  
if the unit is to be the master timing source  
for the circuit. In most cases, the unit should be configured for  
LOOP  
timing.  
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DS3 Scrambler  
Enable this option to scramble the DS3 payload data. This prevents  
certain transport equipment from falsely reporting alarms.  
Data Link  
ENABLE  
Set to  
to allow for remote configuration. When enabled, the  
T3SU 300 provides a channel between the local and the remote DSU  
for point-to-point remote configuration.  
Remote Auto-Configuration  
MASTER  
This feature allows one T3SU 300 (set to  
) to automatically  
relay its DTE port bandwidth configuration to a second unit (set to  
SLAVE  
). If desired, the feature can be disabled by either unit.  
DTE PORTS  
DTE PORTS  
The  
menu allows you to select a port to configure. If  
REMOTE ACCESS CONFIGURATION  
MASTER CONFIGURATION  
(
DS3 NETWORK  
REMOTE AUTO CONFIGURATION  
MASTER  
),  
->  
->  
->  
TIMED PROFILES  
then a fifth option,  
, is available. See Figure 3-3. This  
option allows you to set up timed profiles specifying bandwidth  
allocation for all four ports.  
Configuration selections for the individual ports are described in  
TIMED  
the following section. A more in-depth description of  
PROFILES  
is on page 3-10.  
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Figure 3-3. DTE Ports Menu  
Port Selections 1-4  
DTE PORT 1 2 3  
4
Select  
, , , or to access the following port  
configuration parameters. Configure each DTE port to be  
PORT  
compatible with the DTE equipment attached to it. A  
CONFIGURATION  
menu example is shown in Figure 3-4. Descriptions  
of the individual fields follow the illustration.  
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Figure 3-4. Port Configuration Menu (with V.35 interface card installed)  
Interface Type  
This read-only status field shows the interface type of the selected  
port (HSSI or V.35).  
Port Status  
This read-only status field displays one of the following messages  
to show the port status of the selected port:  
Inactive  
PORT  
The port is installed, but idle. Activate a port through the  
STATE  
field of this menu.  
Active  
The port has been configured and is passing data.  
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Waiting  
The port has been configured and is waiting for the DTE to issue  
the appropriate handshaking signals. For the HSSI interface, the  
terminal equipment available (TA) signal must be asserted by the  
DTE. For V.35, DTR is required if the TR field in this menu is set to  
IDLE WHEN OFF  
; otherwise, DTR is ignored.  
Error  
An error condition such as loss of transmit clock has occurred.  
Not Installed  
An interface card is not installed in the selected port. If a port is not  
PORT CONFIGURATION  
installed, the remainder of the  
appear.  
menu does not  
Port State  
DISABLED  
If a port is installed but not currently in use, set to  
. Set to  
ENABLED  
to activate an installed port.  
Nx75k Blocks  
This field determines the amount of bandwidth allocated to the  
selected port. For a HSSI interface, the selections are from 1-588  
(yielding a bandwidth of 75.2 kbps to 44.2 Mbps). For a V.35  
interface, the selections are from 1-140 (yielding a bandwidth of  
75.2 kbps to 10.5 Mbps). Changes to this field do not take effect  
A
PPLY SETTINGS  
is selected.  
until  
Port Bandwidth  
This read-only status field shows the amount of bandwidth that  
NX75K BLOCKS  
will be available if the selection made in the  
applied.  
field is  
Unallocated 75k blocks  
This read-only status field shows the number of 75k blocks of  
bandwidth not already allocated to the four ports.  
Apply Settings  
Select this field after making all configuration changes for the  
selected port. The changes are then applied to the unit immediately.  
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Applying the settings briefly affects all ports of the T3SU 300. You  
PORT CONFIGURATION  
may cancel changes made to the current  
menu by pressing the ESC key.  
CS  
Selects the control mode for the clear to send (CS) lead. This field  
only appears if a V.35 interface card is installed in the selected port.  
Forced On  
The CS lead remains on and request to send (RS) is ignored as long  
as the unit is synchronized and able to pass data.  
Follow RS  
The CS state matches the RS state.  
TR  
Selects the T3SU 300’s response to the data terminal ready (TR)  
lead. This field only appears if a V.35 interface option card is  
installed in the selected port.  
Ignored  
The T3SU 300 ignores the state of the TR lead.  
Idle When Off  
The T3SU 300 suspends traffic on the selected port if the TR lead is  
off.  
SR  
Selects the control mode for the data set ready (SR) lead. This field  
only appears if a V.35 interface card is installed in the selected port.  
Forced On  
The SR control lead remains on regardless of the state of the  
network.  
Off When OOS/OOF  
The SR control lead remains on unless the T3SU 300 receives an out  
of service/ out of frame (OOS/ OOF) condition from the network.  
Off When Test  
The SR lead remains on except when the T3SU 300 is executing a  
test.  
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Off When OOS/OOF or Test  
The SR lead remains on except when the unit receives an OOS/  
OOF condition from the network or when the unit is executing a  
test.  
CD  
Selects the control mode for the carrier detect (CD) lead. This field  
only appears if a V.35 interface card is installed in the selected port.  
Forced On  
The CD lead remains active at all times.  
Off When OOS/OOF  
The CD control lead remains on unless the T3SU 300 receives an  
OOS/ OOF condition from the network.  
Transmit Clock  
Selects the source of the clock used to transfer data from the DTE to  
the T3SU 300. This selection is only available if a V.35 interface card  
is installed in the selected port. Use the following chart to  
determine your selection:  
Select...  
If...  
Normal  
you want the transmit clock to be derived  
from the T3SU 300.  
Invert  
your DTE device cannot provide a trans-  
mit clock signal and data errors are  
present between your DTE and the T3SU  
300.  
External  
you are transmitting at high rates. This se-  
lection eliminates data errors caused by  
excessive delays in the DTE transmit clock  
receiver, transmit data driver, and cable  
length.  
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Selecting Normal or Invert clocking options depends on your DTE, cable  
length, and cable characteristics. To verify error free operation, perform a  
DTE loopback test and a BERT test from the DTE. See the chapter Diag-  
nostics on page 6-1 for information on performing these tests.  
Timed Profiles  
Using this option, you can allocate bandwidth based on the time of  
day. For example, you can assign more bandwidth to the corporate  
LAN during business hours and more bandwidth to a backup  
machine in the evenings. The T3SU 300 can store two separate user  
profiles which have bandwidth selections for each of the four ports.  
See Figure 3-5 and Figure 3-6.  
Figure 3-5. Timed Profiles Screen  
Profiles 1 and 2  
The  
PROFILE CONFIGURATION  
PORT  
screens allow you to change the  
options for all four ports. See page 3-7  
for descriptions of these options. The settings are then assigned to  
STATE  
NX75K BLOCKS  
and  
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the selected profile (1 or 2) and apply whenever that profile is  
active. See Figure 3-6.  
Profile Time (1 and 2)  
Enter the time that you want the profile to become active. Enter the  
time in military time (i.e., 00:00:00 = 12 AM). The profile remains  
active until one of the following occurs: (1) the other profiles  
activation time comes about, or (2) the profile is disabled manually  
ACTIVE PROFILE  
through the  
selection.  
Active Profile  
Use this field to either manually force a profile to become active  
(regardless of the time of day) or to disable the profiles completely.  
Figure 3-6. Example of a Profile Configuration Menu  
SYSTEM MANAGEMENT  
SYSTEM MANAGEMENT  
The  
menu allows you to configure the T3SU  
300 for management through SNMP, TELNET, or a VT 100  
interface. Embedded SNMP and TELNET are available through  
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SYSTEM  
either a SLIP/ PPP or a 10baseT ethernet port. The  
MANAGEMENT CONFIGURATION  
menus are shown in Figure 3-7 and  
Figure 3-9. Scroll between the two menus using the up and down  
arrows on your keyboard.  
Figure 3-7. System Management Configuration Menu (1 of 2)  
Local IP Address  
Enter the T3SU 300 IP address. This IP address applies to the  
ethernet or auxiliary port (when configured for PPP or SLIP). This  
address is available from the network administrator.  
Subnet Mask  
Enter the subnet mask of the T3SU 300. This address is available  
from the network administrator.  
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Gateway IP Address  
Enter the gateway IP address of the T3SU 300. This address is  
necessary only if the T3SU 300 and the network manager are  
different network, the unit sends it to the gateway.  
Remote IP Address  
Enter the remote T3SU 300’s IP address to provide network  
management access through the local T3SU 300. See the section  
Remote SNMP Management Application on page 7-7 for more  
information.  
IP Security  
IP Hosts  
Enable or disable the IP Security option. If enabled, the unit accepts  
management commands and TELNET sessions from the IP  
IP HOSTS  
addresses entered into the  
fields.  
Enter up to 16 IP addresses of management stations from which the  
unit should accept management commands. These addresses are  
IP SECURITY  
only applicable if  
is enabled.  
Management Port  
Assign the management port to be either LAN, FDL (facility  
datalink), or the AUX Port.  
Auxiliary Port Mode  
This selection applies to version 1200217L1 only. Select the AUX  
ports function for your application. The AUX port, located on the  
rear panel of the T3SU 300, can communicate through a VT 100  
compatible terminal, or a device running SLIP or PPP protocol  
(either through a direct connection or dialup through an external  
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Chapter 3. Configuration  
modem). When set to PPP, SLIP, Dialup PPP, or Dialup SLIP, the  
ethernet port is disabled. If you select any of the dialup options, an  
DIALUP OPTIONS  
additional menu item (  
) appears on the second  
SYSTEM MANAGEMENT CONFIGURATION  
screen. See Figure 3-10. The  
DIALUP OPTIONS  
are described on page 3-19.  
AUXILIARY PORT MODE  
Selections for  
include local and dialup  
MANAGEMENT PORT  
options for VT 100, PPP, and SLIP. If  
(see page  
DIALUP OPTIONS  
are available.  
AUX PORT  
3-13) is set to  
, the  
Modem Mode  
AUX  
This selection applies to version 1200217L2 only. Select the  
AUX  
port function for your application. The  
port, located on the  
rear panel of the T3SU 300, provides a telephone line (POTS) for  
connecting to the internal V.34 modem. The modem interface can  
be configured for dial-in service in VT 100, SLIP, and PPP modes.  
In addition, the T3SU 300 is capable of dial-out operation to report  
error conditions. All modem options can be configured in the  
DIALUP OPTIONS  
CONFIGURATION  
SYSTEM MANAGEMENT  
menu located on the second  
screen. See Figure 3-9. The  
DIALUP OPTIONS  
are  
described on page 3-19.  
MODEM MODE  
Selections for the  
include dialup options for VT 100,  
MANAGEMENT PORT  
PPP, and SLIP. If the  
option (see page 3-13) is  
options are available.  
AUX PORT  
PPP  
and  
SLIP  
set to  
, the  
Auxiliary Port Baud Rate  
AUX  
Set the operating speed of the  
port to match the connected  
device. The selections are 1200, 2400, 4800, 9600, 19200, and  
38400 bps.  
Read Community Name  
Enter the authentication strings used for SNMP management.  
Match the T3SU 300 to the SNMP manager for read privileges.  
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Write Community Name  
Enter the authentication strings used for SNMP management.  
Match the T3SU 300 to the SNMP manager for write privileges.  
Trap IP Addresses  
Enter up to five IP addresses of SNMP managers to which the T3SU  
300 sends traps.  
Trap Generation  
This selection determines which trap types (if any) are generated by  
NEAR END ALARM FAR  
the unit. Use this menu to enable or disable  
,
END ALARM MIB II STANDARD NETWORK TEST  
DTE PORT  
trap  
,
,
, and  
types. See Table 3-1 on page 3-16 through Table 3-5 on page 3-18  
(following Figure 3-8) for trap descriptions.  
Figure 3-8. Trap Generation Menu  
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Table 3-1. Near End Alarm Trap Descriptions  
Trap Type  
If ENABLED, this trap is sent...  
Red Alarm  
(LOS)  
when the unit detects a loss of signal.  
Out of Frame  
(OOF)  
when the unit detects an out of frame condition.  
Yellow Alarm  
(RAI)  
when the unit detects an incoming RAI signal.  
when the unit detects an incoming AIS signal.  
Blue Alarm  
(AIS)  
Idle Signal  
when the unit detects an incoming idle signal  
(1100) over the entire DS3 bandwidth.  
Table 3-2. Far End Alarm Trap Descriptions  
If ENABLED, this trap is sent...  
Trap Type  
Red Alarm  
(LOS)  
when the unit receives indication from the far  
end unit through the FEAC channel that the far  
end unit has lost its receive signal.  
Out of Frame  
(OOF)  
when the unit receives indication from the far  
end unit through the FEAC channel that the far  
end unit has lost frame synchronization with the  
network.  
Yellow Alarm when the unit receives indication from the far  
(RAI)  
end unit through the FEAC channel that the far  
end unit is receiving an RAI indication from the  
network.  
Blue Alarm  
(AIS)  
when the unit receives indication from the far  
end unit through the FEAC channel that the far  
end unit is receiving an AIS indication from the  
network.  
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Trap Type  
If ENABLED, this trap is sent...  
Idle Signal  
when the unit receives indication from the far  
end unit through the FEAC channel that the far  
end unit is receiving an idle signal (1100) over  
the entire DS3 payload.  
Eqpt. Fail  
NSA  
when the unit receives indication from the net-  
work through the FEAC channel of a non-ser-  
vice-affecting failure in the network equipment.  
Eqpt. Fail SA  
when the unit receives indication from the net-  
work through the FEAC channel of a service-af-  
fecting failure in the network equipment.  
Com. Eqpt.  
Fail NSA  
when the unit receives indication from the net-  
work through the FEAC channel of a non-ser-  
vice-affecting failure in the network common  
equipment.  
Table 3-3. MIB II Standard Trap Descriptions  
Trap Type  
Cold Start  
Link Up  
If ENABLED, this trap is sent...  
when the unit is first powered on.  
when the network recovers from a Link Down con-  
dition and data transmission is restored.  
Link Down  
when a network condition prevents data transmis-  
sion. This could be either an alarm or a network  
test.  
Auth. Failure  
when an SNMP request is made with the wrong  
read or write community names.  
Table 3-4. Network Test Trap Descriptions  
If ENABLED, this trap is sent...  
Trap Type  
Network Test In when the unit goes into a DS3 network test, either  
commanded locally or remotely.  
Network Test  
Out  
when the unit is in a DS3 network test and the test  
is terminated.  
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Chapter 3. Configuration  
Table 3-5. DTE Port Trap Description  
If ENABLED, this trap is sent...  
Trap Type  
Port Status  
Change  
when the unit detects a change in any of the four  
DTE ports. These traps may be generated when a  
DTE interface card is plugged in, a cord is re-  
moved, a port is reconfigured, a port goes into an  
error condition due to cabling problems, or a port  
goes into a test mode.  
Toggle All Traps  
When activated, this entry allows you to toggle ALL alarms  
(previously described) between their disabled and enabled states.  
Figure 3-9. System Management Configuration Menu (2 of 2)  
Password  
Set the password required at login (up to 32 characters). The default  
password is adtran.  
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Chapter 3. Configuration  
Unit ID  
Enter a name to identify the unit for management purposes.  
Terminal Timeout  
Set the amount of time the terminal or TELNET session can remain  
inactive before requiring re-entry of the password for access. This  
option can be disabled or set for 1 minute, 5 minutes, 15 minutes, 60  
minutes, or one day.  
Date/Time  
Enter date and time information. Enter the time in military time  
(separated by colons). Enter the month, date, and year (separated  
STATISTICS  
by forward slashes). View this information in the  
menus.  
Alarm Relay  
Enable if the alarm terminal block (located on the rear of the unit) is  
connected to an audible alarm. If enabled, the alarm circuit is  
activated when a network alarm occurs.  
Dialup Options  
Configure the dialup capabilities of the T3SU 300. For product  
version 1200217L1, this option is only available if a dialup selection  
AUXILIARY PORT MODE  
was made for the  
(described on page 3-13).  
For product version 1200217L2, this option is always available. See  
Figure 3-10. Descriptions of the individual fields of this menu  
follow the figure.  
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Chapter 3. Configuration  
Figure 3-10. Dialup Options Menu  
Primary and Secondary Phone Numbers  
When the T3SU 300 dials out to send a trap, it first dials the  
PRIMARY PHONE NUMBER  
. If the call is unsuccessful, it tries the  
SECONDARY PHONE NUMBER  
. Attempts between the two numbers  
continue until a call is established and the trap is reported (or until  
each numbers maximum for redial attempts is reached).  
Initializing String  
The AT command entered in this field is used to initialize the  
modem. Normally, this field should be left at the default setting  
(ATZ).  
Dial String  
The AT command entered in this field causes the modem to dial  
out. Normally, this field should be left at the default setting  
(ATDT).  
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Chapter 3. Configuration  
Maximum Redial Attempts  
The T3SU 300 attempts to establish a call the number of times  
entered in this field. If a successful call is not established after the  
final attempt, the T3SU 300 discards the trap messages.  
Idle Timeout  
Once a call is established and the trap messages are sent, the  
T3SU 300 remains online for the amount of seconds entered in this  
field. If the field is set to 0, the unit hangs up as soon as the trap is  
sent.  
Connection Timeout  
The T3SU 300 waits for a connection the amount of seconds entered  
in this field. Timing begins as soon as the dial command is issued.  
Pause Between Calls  
The T3SU 300 waits the number of seconds entered in this field  
between redial attempts.  
Dialout On Trap  
Enable or disable the T3SU 300’s ability to dial out to report traps.  
A
UXILIARY PORT MODE  
(product version 1200217L1) or  
When the  
MODEM MODE  
DIALUP  
(product version 1200217L2) is configured for  
VT 100  
, the unit reports error conditions in plain ASCII with the  
following information:  
The Unit ID value programmed in the Unit ID field of the  
SYSTEM MANAGEMENT  
second  
screen (see Figure 3-9)  
A trap code indicating the error condition (selected from the  
TRAP GENERATION  
SYSTEM MANAGEMENT  
screen under  
)
The date and time when the error was logged  
AUXILIARY PORT MODE  
MODEM MODE  
is configured for  
When the  
or  
DIALUP PPP  
DIALUP SLIP  
, the unit logs in to the PPP/ SLIP host  
or  
and reports the error conditions to the hosts designated under the  
TRAP IP ADDRESSES  
SYSTEM MANAGEMENT  
).  
(also found under  
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Chapter 3. Configuration  
Answer on Ring  
Enable or disable the T3SU 300’s ability to accept an incoming call.  
If enabled, incoming calls are automatically answered by the  
T3SU 300, allowing you to remotely perform management  
functions.  
Hangup  
Selecting this option forces the T3SU 300 to end an established call.  
Last Modem Response  
This status field displays the last modem response to the T3SU 300.  
Possible responses include:  
OK  
CONNECT  
BUSY  
ERROR  
NO DIALTONE  
NO CARRIER  
UTILITIES  
UTILITIES  
The  
menu allows you to view T3SU 300 system  
information (including self test results), revert to default  
configuration settings, or flash load a new version of software. The  
UPDATE FLASH SOFTWARE  
selection is only applicable when  
SYSTEM UTILITIES  
configuring the unit locally. The  
menu is shown  
in Figure 3-11. Possible results for the self test are listed in the  
following table  
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Chapter 3. Configuration  
:
If the self test results are...  
Then...  
PASS  
the self test was successful and  
the unit is ready to use.  
BAD RAM DATA  
BAD RAM ADDRESS  
BAD CHECKSUM  
contact ADTRAN Technical  
Support. See the inside back  
cover of this manual for more  
information.  
BAD BOOT SECTOR  
DS3F LOOPBACK FAILURE  
ARTE TERMINAL LOOPBACK FAILURE  
or  
ARTE INTERNAL LOOPBACK FAILURE  
S
AVE CONFIGURATION  
CONFIGURATION CORRUPT  
select  
CONFIGURATION  
from the main  
menu. If condition persists,  
contact ADTRAN Technical  
Support.  
Figure 3-11. System Utilities Menu  
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Chapter 3. Configuration  
SAVE CONFIGURATION  
SAVE CONFIGURATION  
The  
selection commits the current  
configuration changes to nonvolatile memory. If this option is not  
selected after making changes to the configuration, the unit reverts  
to its previous configuration when powered down.  
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Chapter 4  
Status  
1 STATUS  
MAIN  
from the  
View port status information by selecting  
menu. Information for the network port and the DTE ports is  
STATUS  
provided. The  
menu is shown in Figure 4-1.  
Figure 4-1. Status Menu  
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Chapter 4. Status  
NETWORK PORT  
DS3 Framing  
The DS3 framing type is shown in this field.  
Network State  
This field displays the current condition of the network. Possible  
conditions are listed in the following table:  
Condition  
Normal  
Alarm  
Description  
The T3SU 300 is ready to pass data.  
The unit is currently receiving an alarm indication.  
RECEIVE ALARM  
termine the alarm type.  
See the  
field in this menu to de-  
DIAGNOS  
-
In Test  
The unit is currently in test mode. The  
TICS  
menu provides information on test type.  
Alarm State  
This field displays the current alarm condition of the T3SU 300.  
Possible conditions are given in the following table:  
:
Condition  
Normal  
Description  
No alarms are currently being received.  
Yellow  
The unit is transmitting a yellow alarm from the  
network. This alarm is a signal sent back toward  
the source of a failed transmit circuit. The X-bits  
(X1 and X2) are set to zero.  
LOS (Red  
Alarm)  
The unit has lost the Rx signal.  
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Condition  
Description  
Blue (AIS)  
The unit is receiving a blue alarm condition from  
the network. A blue alarm occurs when consecu-  
tive 1010s are received in the information bits.  
This indicates that there is a transmission fault lo-  
cated either at or upstream from the transmitting  
terminal.  
OOF  
Idle  
The unit detects an out of frame condition from the  
network.  
The unit detects an idle sequence from the net-  
work. Service is immediately available for use.  
Data Link State  
This field displays the current state of the data link between the  
local and the remote T3SU 300s. Possible states are listed in the  
following table:  
Condition  
Description  
Normal  
The local unit’s data link is in sync with the remote  
unit.  
DATA LINK  
CONFIGURATION  
DS3 NETWORK  
Disabled  
Down  
The  
option in the  
DISABLED  
.
menu is set to  
The local and remote units are not in sync.  
Remote State  
This field displays the current state of the remote link. Possible  
states are listed in the following table:  
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Chapter 4. Status  
Condition  
Description  
Normal  
No alarms are currently being received.  
RAI (Yellow  
Alarm)  
The unit is transmitting a yellow alarm from the  
network. This alarm is a signal sent back toward  
the source of a failed transmit circuit. The X-bits  
(X1 and X2) are set to zero.  
LOS (Red  
Alarm)  
The unit has lost the Rx signal.  
AIS (Blue  
Alarm)  
The unit is receiving a blue alarm condition from  
the network. A blue alarm occurs when consecu-  
tive 1010s are received in the information bits.  
This indicates that there is a transmission fault lo-  
cated either at or upstream from the transmitting  
terminal.  
OOF  
Idle  
The unit detects an out of frame condition from the  
network.  
The unit detects an idle sequence from the net-  
work. Service is immediately available for use.  
Eqpt Fail (SA) The network has signaled a service affecting  
equipment failure condition.  
Eqpt Fail  
(NSA)  
The network has signaled a non-service affecting  
equipment failure condition.  
ComEqptFail The network has signaled a non-service affecting  
(NSA)  
common equipment failure condition.  
Unknown  
The T3SU 300 is unable to determine the state of  
the network or the remote unit.  
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Chapter 4. Status  
DTE PORTS  
The following status information is available for DTE Ports 1-4.  
Interface Type  
The interface type of the port is shown in this field (HSSI or V.35).  
Port Status  
This field displays the current port status. Possible states are listed  
in the following table:  
Condition  
Description  
Inactive  
The port is installed, but idle. Activate a port  
PORT STATE  
DTE PORT  
field of the  
through the  
CONFIGURATION  
menu.  
Active  
Error  
The port has been configured and is passing  
data.  
An error condition such as loss of transmit clock  
has occurred.  
In Test  
The unit is currently in test mode.  
Waiting for  
DTE  
The port has been configured and is waiting for  
the DTE to issue the appropriate handshaking sig-  
nals. For the HSSI interface, the terminal equip-  
ment available (TA) signal must be asserted by  
the DTE. For V.35, DTR is required if the TR field  
IDLE WHEN OFF  
is set to  
; otherwise, DTR is ig-  
DTE PORT  
nored. The TR field is found in the  
CONFIGURATION  
menu.  
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Chapter 4. Status  
Bandwidth  
Displays the amount of bandwidth currently being used by the  
port.  
DTE Leads  
If a lead is active on the port, it is displayed in this field. The leads  
differ according to the interface type. Lead descriptions for both the  
HSSI and the V.35 interfaces follow.  
:
HSSI Interface  
Condition  
Leads  
TA (terminal available)  
ness to transmit data.  
CA (communications  
equipment available)  
Asserted by the T3SU 300 to indicate  
readiness to transmit data.  
LA (loopback circuit A) The condition reflected by this lead is  
dependent upon the LB lead. See Table  
4-1 on page 4-7.  
LB (loopback circuit B)  
The condition reflected by this lead is  
dependent upon the LA lead. See Table  
4-1 on page 4-7.  
LC (loopback circuit C) Asserted by the unit to request a loop-  
back from the DTE.  
TM (test mode)  
Asserted by the T3SU 300 when either  
the network or the port is being tested.  
Both TA and CA must be on before data will flow.  
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Chapter 4. Status  
Table 4-1. LA and LB Leads  
LB Condition  
LA  
Off  
On  
Off  
On  
Off  
Off  
On  
On  
No test (normal)  
Local line loopback  
Remote line loopback  
Local DTE loopback  
V.35 Interface Leads  
RS:  
CS:  
CD:  
TR:  
SR:  
LL:  
RL:  
TM:  
Request to send  
Clear to send  
Carrier detect  
Data terminal ready  
Data set ready  
Local DTE port loopback  
Remote port payload loopback  
Test mode. Asserted by the T3SU 300 when either the  
network or the port is being tested.  
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Chapter 5  
Statistics  
VIEWING STATISTICAL INFORMATION  
2 STATISTICS  
MAIN  
STATISTICS  
menu to access  
Select  
from the  
menus. Alarm information and performance parameters are  
available for both the near and far ends of the network. Statistical  
information is given in screens based on the following time  
periods: the current 15-minute interval, a 24-hour history (divided  
into 96 15-minute intervals), and the totals for the previous 24  
hours. Also, a cumulative alarm count is given. This count  
continues indefinitely until reset by the user. See Figure 5-1 for the  
LOCAL STATISTICS  
main  
screen.  
If the Datalink option is disabled, remote statistics are not available  
CONFIGURATION  
DS3 NETWORK  
DATA LINK  
-> ).  
(
->  
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Chapter 5. Statistics  
Figure 5-1. Main Local Statistics Menu Screen  
Alarm History  
The T3SU 300 keeps track of yellow, blue, and red alarms for the  
near end. View alarm history information in one of the three time  
period selections, or view a cumulative alarm count. Information in  
these fields is for the given time period (if any) since the last reset.  
CLEAR ALL  
The cumulative alarm count continues indefinitely until  
LOCAL STATISTICS  
is selected. See Figure 5-2 and Figure 5-3 for  
examples of alarm history screens.  
The count given reflects the number of times the alarm has occurred (rath-  
er than the number of seconds the alarm was active).  
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Chapter 5. Statistics  
Figure 5-2. Current Alarm Count Screen  
Figure 5-3. 24-Hour Alarm History Screen  
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Chapter 5. Statistics  
Performance Parameters  
View performance parameter information in one of the three time  
period selections. Information in these fields is for the given time  
period since the last reset. When viewing the 24-hour history  
statistics screen, use the left and right arrow keys to scroll through  
all 96 15-minute intervals. See Figure 5-4 through Figure 5-6 for  
examples of the performance parameter screens.  
Descriptions of each field of these screens follow:  
Interval starting at:  
Time that the 15-minute interval began. This field is only displayed  
in the 24-hour history screen which gives information for the  
previous 24 hours divided into 15-minute intervals (shown in  
Figure 5-3).  
Unavailable Seconds (UAS)  
Time in seconds that the network port is unavailable for data  
delivery. This means that the T3 link is down or in test, or that the  
signaling state is down.  
Severely Errored Framing Seconds (SEFS)  
Number of seconds with one or more out of frame defects or a  
detected incoming AIS.  
Line Coding Violations (LCV)  
Number of BPVs (bipolar violations) and EXZs (excessive zeros)  
that have occurred.  
Line Errored Seconds (LES)  
Number of seconds in which one or more CVs or one or more LOS  
(loss of signal) defects occurred.  
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Chapter 5. Statistics  
Figure 5-4. Network Statistics Menu for Current 15-Minute Interval  
P-Bit Errored Seconds (PES)  
Number of seconds with one or more PCVs (P-bit coding  
violations), one or more out of frame defects, or a detected  
incoming AIS (alarm indication signal). This count is not  
incremented when UASs (unavailable seconds) are counted.  
P-Bit Severely Errored Seconds (PSES)  
Number of seconds with 44 or more PCVs, one or more out of  
frame defects, or a detected incoming AIS. This count is not  
incremented when UASs are counted.  
P-Bit Coding Violations (PCV)  
Number of coding violation (CV) error events that have occurred.  
C-Bit Coding Violations (CCV)  
In C-bit parity mode, this is a count of coding violations reported  
via the C-bits or the number of C-bit parity errors that have  
occurred.  
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Chapter 5. Statistics  
Figure 5-5. Network Port Statistics 24-Hour History Screen  
C-Bit Errored Seconds (CES)  
Number of seconds with one or more CCVs, one or more out of  
frame defects, or a detected incoming AIS. This count is not  
incremented when UASs are counted.  
C-Bit Severely Errored Seconds (CSES)  
Number of seconds with 44 or more CCVs, one or more out of  
frame defects, or a detected incoming AIS. This count is not  
incremented when UASs are counted.  
F-Bit Errors (FBE)  
Number of times an F-bit framing error has occurred.  
M-Bit Errors (MBE)  
Number of times an M-bit framing error has occurred.  
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Chapter 5. Statistics  
Figure 5-6. Network Port Statistics Menu (24-Hour Totals)  
Clear All Local Statistics/Refresh All Remote Statistics  
Clears or refreshes all current information. These selections affect  
all statistical information (not just the displayed screen).  
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Chapter 5. Statistics  
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Chapter 6  
Diagnostics  
DIAGNOSTICS  
The  
menu allows you to initiate loopback and BERT  
DIAGNOSTICS  
tests from the T3SU 300. Figure 6-1 shows the main  
menu. Tests can be performed for the entire DS3 or for an  
individual DTE port. To choose a port from the left column of the  
menu, select the ports corresponding number and press Enter .  
The individual port menus provide loopback and BERT selections.  
BERT configuration options and results are given in the right  
DIAGNOSTICS  
column of the main  
menu. Diagnostic selections are  
described in the following sections.  
You can only perform a BERT test on one port at a time. If a BERT test is  
already in progress and a second BERT test is selected for another port,  
the first test is discontinued.  
Loopback tests may be performed simultaneously on all ports.  
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Chapter 6. Diagnostics  
Figure 6-1. Diagnostics Main Menu  
DS3  
1
Access the DS3’s diagnostic options by selecting from the main  
DIAGNOSTICS  
menu. The menu in Figure 6-2 appears.  
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Chapter 6. Diagnostics  
Figure 6-2. DS3 Diagnostics Menu  
Data Mode  
Ends a test already in progress for this port.  
DS3 Payload Loopback  
During this test, all payload information is re-framed and looped  
back towards the network. See Figure 6-3 for a block diagram  
illustrating the loopback point and the signal paths for this test.  
This test does not interrupt data flow from the network to the DTE, but  
it does block all DTE-to-network data.  
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Chapter 6. Diagnostics  
T3SU 300  
DTE  
Figure 6-3. DS3 Payload Loopback Test  
Line Loopback  
This test allows the loop interface (LINE) section of the local  
T3SU 300 to be tested from the remote T3SU 300 over the actual T3  
circuit. Testing from the remote end of the circuit is performed by  
using a 511 test pattern or DTE data generated by the remote host.  
With this test, the T3SU 300 transceiver receives data from the  
network and loops it back toward the network through its  
transmitter. The transmitted data is identical to the receive data  
(including framing errors) and can therefore be accurately tested by  
the carrier for errors. See Figure 6-4.  
The Line Loopback test is only available in loop timed mode  
(CONFIGURATION -> DS3 NETWORK -> DS3 TIMING -> LOOP).  
T3SU 300  
DTE  
Figure 6-4. Line Loopback Test  
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Chapter 6. Diagnostics  
BERT  
Select BERT to perform a bit error rate test over the entire payload  
bandwidth. Only one BERT test may be performed at a time.  
Remote DS3 Loopback  
This selection initiates a DS3 Loopback test for the remote unit. DS3  
Loopback tests are described previously on page 6-3.  
Remote Loopback with BERT  
This selection initiates a DS3 Loopback test for the remote unit and  
sends/ checks the BERT pattern over the entire DS3 payload  
bandwidth.  
DTE Ports 1-4  
Access the DTE port diagnostic options by selecting the number  
corresponding with the desired port (2 through 5) from the main  
DIAGNOSTICS  
menu. The menu in Figure 6-5 appears.  
Figure 6-5. DTE Port Diagnostics Menu  
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Chapter 6. Diagnostics  
Data Mode  
Ends a test already in progress.  
Payload Loopback  
This selection initiates a Payload Loopback test for all data on the  
selected port rather than for the entire DS3. During this test, the  
data is looped back in the network direction. Perform this test to  
verify the integrity of the portion of the DS3 link connecting the  
selected port of the T3SU 300 and the remote DTE. This test is non-  
intrusive to the three other ports. See Figure 6-6.  
This test does not interrupt data flow from the network to the DTE, but it  
does block all DTE-to-network data for the selected port.  
T3SU 300  
MU  
DTE  
Figure 6-6. Payload Loopback Test  
Payload BERT  
This selection performs a bit error rate test on the selected port.  
This test in non-intrusive to the other three ports. Only one BERT  
test may be performed at a time. This test is normally performed  
from the remote and local ends simultaneously to determine  
whether the errors are coming from the transmit or the receive  
direction. See Figure 6-7.  
6-6  
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Chapter 6. Diagnostics  
T3SU 300  
BERT OUT  
MU  
DTE  
BERT IN  
Figure 6-7. Payload BERT Test  
DTE Loopback  
This test is used to verify proper operation of the link between the  
T3SU 300 and the terminal equipment. During this test, all data  
sent by the terminal equipment is looped back to the terminal  
equipment. A block diagram illustrating the loopback point and the  
signal path is shown in Figure 6-8.  
While in DTE Loopback, data from the host is transmitted into the  
network.  
T3SU 300  
MU  
DTE  
Figure 6-8. DTE Loopback Test  
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Chapter 6. Diagnostics  
Payload and DTE Loopback  
Select this test to perform payload and DTE loopbacks  
simultaneously. The individual tests are described previously on  
page 6-3 and page 6-7. See Figure 6-9 for a block diagram  
illustrating this test.  
T3SU 300  
MU  
DTE  
Figure 6-9. Payload and DTE Loopback Test  
Remote Port Payload Loopback  
This selection initiates a Payload Loopback on the remote T3SU 300  
for all data on the selected port. Perform this test to verify the  
integrity of the portion of the DS3 link connecting the local DTE  
and the selected port of the remote T3SU 300. All other ports on  
both the local and remote units are unaffected.  
Remote Payload Loopback with BERT  
Perform this test to verify the integrity of the link between the  
selected port of the local T3SU 300 and the corresponding remote  
T3SU 300 port. During this test, the remote unit loops back all data  
for the selected port, while the local unit sends and checks the  
selected BERT pattern. The loopback point and the signal paths for  
the remote T3SU 300 are the same as the Payload Loopback test for  
the local T3SU 300 (shown in Figure 6-6).  
6-8  
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Chapter 6. Diagnostics  
BERT Configuration  
The following options apply to any of the tests involving BERT  
testing.  
Pattern  
Select the desired test pattern for the BERT test (see Figure 6-10).  
The internal test pattern generator can be configured for the  
following types of test patterns:  
All Zeros  
All ones  
2^15-1  
2^23-1  
The test pattern is used to independently test the operation of the  
framing circuitry and the network interface of the T3SU 300.  
Instead of using data from the host, this test uses data generated by  
the T3SU 300’s internal test pattern generator and detector.  
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Chapter 6. Diagnostics  
Figure 6-10. BERT Pattern Menu  
Invert Pattern  
ENABLE  
If set to  
, the T3SU 300 inverts the transmitted and received  
BERT test pattern. This allows the unit to be compatible with test  
equipment which generates inverted BERT patterns.  
BERT Information Fields  
The following five fields provide information about the most  
recently issued BERT test. These fields appear in the main  
DIAGNOSTICS  
menu (shown in Figure 6-1).  
Port  
Displays which port is transmitting and receiving the BERT  
pattern.  
Direction  
Displays the direction in which the BERT pattern is being sent.  
State  
SYNC  
NO SYNC  
to indicate whether or not the  
Displays either  
or  
unit is in sync with the BERT pattern.  
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Errors  
Displays the number of BERT errors received by the T3SU 300 since  
the last reset.  
Current Err/Sec  
Displays the number of BERT errors received by the unit in the last  
second.  
Insert Error  
Clear Errors  
Inserts one error into the data stream.  
Clears the error counts given in the BERT information fields of this  
menu.  
Reset All Tests  
Discontinues all active tests and clears the counts displayed in the  
BERT information fields.  
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Chapter 6. Diagnostics  
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Chapter 7  
Applications  
This chapter provides examples of some common T3 applications.  
The examples include a single port DSU/ CSU full T3 bandwidth  
application, a point-to-point multiport application (page 7-3), a  
fractional T3 application (page 7-5), and a remote SNMP  
management application (page 7-7). The configuration selections  
given in these examples may need modification based on your  
network configuration.  
SINGLE PORT FULL T3 BANDWIDTH  
In applications requiring full T3 bandwidth, the T3SU 300 operates  
with other vendor products that support 44.2 Mbps data over  
unchannelized T3 circuits.  
In the application shown in Figure 7-1, the T3SU 300 provides  
network connectivity for a router running at 44.2 Mbps. The data is  
frame relay and the unit is SNMP-managed via the local ethernet.  
See Table 7-1 for an example configuration.  
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Chapter 7. Applications  
Router  
T3  
Dedicated  
or Packet  
Network  
HSSI  
44.2 Mbps  
T3SU 300  
CONTROL  
IN SERVICE  
IN TEST  
ALARM  
LOS  
REMOTE  
ACTIVE  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SER  
VICE  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN TEST  
ALARM  
LOS  
NETWORK  
DTE PORT  
1
DTE PORT  
2
DTE PORT  
3
DTE PORT  
4
T3SU 300  
Figure 7-1. Single Port Application  
Table 7-1. Configuration Example for Single Port Full T3  
Bandwidth Application  
Local T3SU 300  
Network  
DTE 1  
DS3 Framing - C-bit Parity  
Line Length - Short  
DS3 Timing - Loop  
Datalink - Enabled  
Port State - Enabled  
Nx75k blocks - 588  
Port State - Disabled  
Port State - Disabled  
Port State - Disabled  
Local IP Address - 10.4.10.2  
DTE 2  
DTE 3  
DTE 4  
System  
Management  
Subnet Mask -  
255.255.255.0  
Gateway IP Address -  
10.4.10.1  
IP Security - Disabled  
Trap IP Address - 10.4.10.10  
Management Port - LAN  
7-2  
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Chapter 7. Applications  
When networking requirements call for sharing the bandwidth of a  
point-to-point T3 circuit, additional data ports can be installed into  
the T3SU 300 for multiport operation. The T3SU 300 supports up to  
three port option cards (either high-speed V.35 or HSSI). These  
option cards are hot swappable and can be field installed. See the  
section DTE Port Interface Card Slots on page 2-4 for more  
information on card installation.  
This application (shown in Figure 7-2) supports two subnet  
connections via two different routers, a video conferencing  
connection, and a main frame data connection. The T3SU 300  
supports the high speed data connection requirements of the  
routers (using the HSSI ports), as well as the V.35 data connection  
requirements of the video conferencing unit and the main frame.  
The bandwidth is split by the T3SU 300 to provide 18 Mbps for each  
router, 1.5 Mbps for the video conference units, and 6 Mbps for the  
main frames. See Table 7-2 for an example configuration of this  
application.  
Main  
Frame  
Main  
Frame  
Video  
Conferencing  
V.35  
6 Mbps  
V.35  
6 Mbps  
Video  
Conferencing  
V.35  
V.35  
1.5 Mbps  
1.5 Mbps  
Router  
Router  
T3  
T3  
Dedicated  
Network  
HSSI  
18 Mbps  
HSSI  
T3SU 300  
T3SU 300  
CONTROL  
CONTROL  
REMOTE  
ACTIVE  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
REMOTE  
ACTIVE  
IN SERVICE  
IN SERVICE  
IN SERVICE  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN TEST  
ALARM  
LOS  
IN TEST  
IN TEST  
ALARM  
LOS  
ALARM  
LOS  
NETWORK  
NETWORK  
DTE PORT  
1
DTE PORT  
1
DTE PORT  
2
DTE PORT  
2
DTE PORT  
3
DTE PORT  
3
DTE PORT  
4
DTE PORT  
4
18 Mbps  
Router  
T3SU 300  
T3SU 300  
Router  
HSSI  
18 Mbps  
HSSI  
18 Mbps  
Figure 7-2. Multiport Application  
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Chapter 7. Applications  
Table 7-2. Configuration Example for Multiport  
Application  
Local T3SU 300  
Remote T3SU 300  
Network  
DS3 Framing - C-bit Parity  
Line Length - Short  
DS3 Framing - C-bit Parity  
Line Length - Short  
DS3 Timing - Loop  
Datalink - Enabled  
Port State - Enabled  
Nx75k blocks - 240  
Port State - Enabled  
Nx75k blocks - 240  
DS3 Timing - Loop  
Datalink - Enabled  
Port State - Enabled  
Nx75k blocks - 240  
Port State - Enabled  
Nx75k blocks - 240  
DTE 1 (HSSI)  
DTE 2 (HSSI)  
DTE 3 (V.35)  
DTE 4 (V.35)  
Port State - Enabled  
Nx75k blocks - 80  
Port State - Enabled  
Nx75k blocks - 80  
Port State - Enabled  
Nx75k blocks - 20  
Port State - Enabled  
Nx75k blocks - 20  
System  
Local IP Address - 10.4.10.2  
Management  
Subnet Mask -  
Nothing required. Remote unit  
can be managed using the lo-  
cal T3SU 300.  
255.255.255.0  
Gateway IP Address -  
10.4.10.1  
IP Security - Disabled  
Trap IP Address - 10.4.10.10  
Management Port - LAN  
7-4  
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Chapter 7. Applications  
FRACTIONAL T3 CARRIER APPLICATION  
When network providers want to provide service at rates less than  
full T3, T3SU 300 units can be used in pairs for deploying sub-T3  
rate services.  
In this application example (shown in Figure 7-3), a carrier provides  
fractional T3 access at 8 Mbps for internet connectivity. The data  
connection can be either V.35 or HSSI at either location. This  
network uses a HSSI port at the carriers internet POP (point of  
presence) and a high-speed V.35 connection at the customer s  
router. The carrier manages both the local and remote T3SU 300s  
via SNMP. Table 7-3 gives an example configuration for this  
application.  
While in DTE Loopback, data from the host is transmitted into the net-  
work.  
Router  
Router  
Carrier  
Internet  
Access  
HSSI  
8 Mbps  
V.35  
8 Mbps  
T3  
T3  
Dedicated  
Network  
T3SU 300  
T3SU 300  
CONTROL  
CONTROL  
REMOTE  
ACTIVE  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
REMOTE  
ACTIVE  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN SER  
VICE  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN SERVICE  
IN TEST  
ALARM  
LOS  
IN TEST  
ALARM  
LOS  
IN TEST  
ALARM  
LOS  
NETWORK  
NETWORK  
DTE PORT  
1
DTE PORT  
1
DTE PORT  
2
DTE PORT  
2
DTE PORT  
3
DTE PORT  
3
DTE PORT  
4
DTE PORT  
4
T3SU 300  
T3SU 300  
Figure 7-3. Fractional Application  
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Chapter 7. Applications  
Table 7-3. Configuration Example for Fractional T3  
Application  
Local T3SU 300  
Remote T3SU 300  
Network  
DS3 Framing - C-bit Parity  
Line Length - Short  
DS3 Framing - C-bit Parity  
Line Length - Short  
DS3 Timing - Loop  
Datalink - Enabled  
Port State - Disabled  
Port State - Enabled  
Nx75k blocks-107  
DS3 Timing - Loop  
Datalink - Enabled  
Port State - Disabled  
Port State - Enabled  
Nx75k blocks-107  
DTE 1  
DTE 2  
HSSI (Local)  
V.35 (Remote)  
DTE 3  
Port State - Disabled  
Port State - Disabled  
Port State - Disabled  
Port State - Disabled  
DTE 4  
System  
Local IP Address - 12.6.12.2  
Management  
Subnet Mask -  
255.255.255.0  
Nothing required. Remote unit  
can be managed using the lo-  
cal T3SU 300.  
Gateway IP Address -  
12.6.12.1  
IP Security - Disabled  
Trap IP Address - 12.6.12.10  
Management Port - LAN  
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Chapter 7. Applications  
REMOTE SNMP MANAGEMENT APPLICATION  
A remote T3SU 300 can be managed by a local management station  
if the remote unit is assigned its own IP address. This address must  
DATALINK  
be assigned at both the near and far ends. Also, the  
option must be enabled on both units.  
In this application example (shown in Figure 7-4) a local T3SU 300,  
connected to the same LAN as the management station, provides  
management access to a remote T3SU 300. The local unit has the  
REMOTE IP ADDRESS  
remote units IP address in its  
IP address is entered into the remote units  
field. Table 7-4 gives an example configuration for this application.  
field. That same  
LOCAL IP ADDRESS  
IP =10.4.10.2  
IP =10.4.10.3  
T3  
T3SU 300  
IN ERVICE  
T3SU 300  
IN ERVICE  
CONTROL  
IN  
IN TES  
ALARM  
LO  
S
ERVICE  
CONTROL  
I
N
S
E
R
V
I
C
E
IN  
IN TES  
ALARM  
LO  
S
ERVICE  
I
N
S
E
R
V
I
C
E
IN  
IN TES  
ALARM  
LO  
S
ERVICE  
I
N
S
E
R
V
I
C
E
REMOTE  
ACTIVE  
IN  
S
ERVICE  
S
REMOTE  
ACTIVE  
IN  
S
ERVICE  
S
T
I
N
T
E
S
T
T
I
N
T
E
S
T
T
I
N
T
E
S
T
I
N
T
E
S
T
I
N
T
E
S
T
I
N
T
E
S
T
I
N
T
E
S
T
ALARM  
LOS  
ALARM  
LOS  
DTE PORT  
ALARM  
LOS  
DTE PORT  
ALARM  
LOS  
ALARM  
LOS  
ALARM  
LOS  
ALARM  
LOS  
S
S
S
NETWORK  
NETWORK  
DTE PORT  
1
1
DTE PORT  
2
2
DTE PORT  
3
DTE PORT  
3
DTE PORT  
4
DTE PORT  
4
T3SU 300  
T3SU 300  
IP =10.4.10.3  
Figure 7-4. Remote Management Application  
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Chapter 7. Applications  
Table 7-4. Configuration Example for Remote  
Management Application  
Local T3SU 300  
Datalink = Enabled  
Local IP Address= 10.4.10.2  
Remote T3SU 300  
Network  
System  
Datalink = Enabled  
Local IP Address= 10.4.10.3  
Management  
Subnet  
Mask= 255.255.255.0  
Subnet  
Mask= 255.255.255.0  
Gateway IP Address=  
10.4.10.1  
Gateway IP Address= 0.0.0.0  
Remote IP Address= 10.4.10.3 Remote IP Address= 0.0.0.0  
Management Port= LAN Management Port= FDL  
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Appendix A  
Pinouts  
The following tables give the pin assignments for the connectors  
located on the T3SU 300 and for the V.35 interface card. For more  
information on these connectors, see the chapter Installation and  
Operation on page 2-1.  
Table A-1. Control and Auxiliary Port Pin Assignments  
RJ Pin#  
Function  
GND  
RTS  
TD  
DSR  
RD  
CTS*  
DTR  
Direction  
1
2
3
4
5
6
7
8
I
I
O
O
O
I
DCD  
O
*Used for hardware flow control.  
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A-1  
       
Appendix A. Pinouts  
Table A-2. HSSI Interface Pin Assignments  
Pin #  
Pin # Direction  
Description  
(+ side) (- side)  
1
2
26  
27  
Signal Ground (SG)  
Receive Timing (RT)  
DCE Available (CA)  
Receive Data (RD)  
Loopback Circuit C (LC)  
Send Timing (ST)  
O
O
O
O
O
3
28  
4
29  
5
30  
6
31  
7
8
9
32  
33  
34  
35  
36  
37  
38  
39-43  
44  
Signal Ground (SG)  
DTE Available (TA)  
Terminal Timing (TT)  
Loopback Circuit A (LA)  
Send Data (SD)  
Loopback Circuit B (LB)  
Signal Ground (SG)  
Five Ancillary to DCE  
Signal Ground (SG)  
Five Ancillary from DCE  
Test Mode (TM)  
I
I
I
I
I
10  
11  
12  
13  
14-18  
19  
20-23  
24  
25  
I
45-48  
49  
50  
O
O
Signal Ground (SG)  
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Appendix A. Pinouts  
Table A-3. V.35 Interface Card Pin Assignments  
Pin  
A
B
C
D
E
F
H
J
CCITT  
101  
102  
105  
106  
107  
109  
-
Description  
Protective Ground (PG)  
Signal Ground (SG)  
Request to Send (RTS)  
Clear to Send (CTS)  
Data Set Ready  
Received Line Signal Detector (CD)  
Data Terminal Ready (DTR)  
not used  
-
L
-
Local Loopback (LL)  
N
R
T
V
X
P
S
Y
AA  
U
W
NN  
-
Remote Loopback (RL)  
Received Data (RD-A)  
Received Data (RD-B)  
Receiver Signal Element Timing (SCR-A)  
Receiver Signal Element Timing (SCR-B)  
Transmitted Data (SD-A)  
104  
104  
115  
115  
103  
103  
114  
114  
113  
113  
-
Transmitted Data (SD-B)  
Transmitter Signal Element Timing (SCT-A)  
Transmitter Signal Element Timing (SCT-B)  
External TX Signal Element (SCX-A)  
External TX Signal Element (SCX-B)  
Test Indicator (TI)  
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Appendix A. Pinouts  
Table A-4. LAN Port Pin Assignments  
Pin  
1
Name  
Description  
TD+ The positive signal for the TD differential  
pair. This signal contains the serial output  
data stream transmitted onto the network.  
TD- The negative signal for the TD differential  
pair (pins 1 and 2).  
2
3
RD+ The positive signal for the RD differential  
pair. This signal contains the serial input  
data stream received from the network.  
N/A not used  
4, 5  
6
RD- The negative signal for the RD differential  
pair (pins 3 and 6).  
7, 8  
N/A not used  
A-4  
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Appendix B  
Specifications Summary  
SPECIFICATIONS AND FEATURES  
This section describes the standard specifications and features  
incorporated in the T3SU 300.  
Network Interface  
Clear channel, non-channelized DS3.  
Line buildout: short (less than 50 feet) and long (greater than 50).  
Framing format: M13 and C-bit parity.  
Line rate: 44.736 Mbps.  
Line interface: 75-ohm BNC coax female connectors.  
DTE Interface(s)  
Integrated HSSI port.  
Three (3) option slots accept any combination of interface cards.  
HSSI ports are SCSI-II 50-pin female.  
V.35 ports are high-speed, M34 female.  
All option cards are hot swappable.  
DTE Rates Supported  
HSSI port(s) support 75 kbps to 44.2 Mbps.  
V.35 port(s) support 75 kbps to 10 Mbps.  
Bandwidth is selectable in 75 kbps increments.  
Clocking  
Loop (slaved to network receive clock)  
Local (private network master)  
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Appendix B. Specifications Summary  
VT 100 Terminal Interface  
RJ-48, EIA -232 compatible, female DB-25 adapter provided.  
Accessible through front or rear panel.  
Remote configuration and statistics access available inband.  
SNMP/Telnet  
Integrated 10baseT ethernet and SLIP/ PPP (async) port.  
MIB II, RFC 1213 and 1407 compliant.  
ADTRAN Enterprise MIB for extended monitoring and control/  
configuration.  
Agency Approvals  
FCC Part 15, Class A, UL and CUL  
Environment  
Operating: 0 to 50 °C (32 to 122 °F)  
Storage: -20 to 70 °C (-4 to 158 °F)  
Relative Humidity: Up to 95%, non-condensing  
Physical  
Dimensions: 11.625“D x 17.0“W x 1.7“H (for 1U high  
19” rack space)  
Weight: 7 lbs.  
Power: 120 VAC, 9 W  
B-2  
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Appendix C  
Acronyms/Abbreviations  
AIS..................... alarm indication signal  
AMI ................... alternate mark inversion  
ANSI ................. American National Standards Institute  
async ................. asynchronous  
BERT ................. bit error rate test  
bps ..................... bits per second  
BPV ................... bipolar violation  
CA...................... communications equipment available  
CCITT ............... Consultive Committee for International Telephony and Telegraphy  
CCV................... C-bit coding violation  
CD ..................... carrier detect  
CES .................... C-bit errored seconds  
CO ..................... central office  
CPE.................... customer premise equipment  
CRC ................... cyclic redundancy check  
CS ...................... clear to send  
CSES ................. C-bit severely errored seconds  
CSU ................... channel service unit  
CTS.................... clear to send  
dB....................... decibel  
DBU................... dial backup  
DCD .................. data carrier detect  
DCE................... data communications equipment  
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Appendix C. Acronyms/Abbreviations  
DDS................... digital data service  
DLCI.................. data link connection identifier  
DS1 .................... digital signal level one  
DS3 .................... digital signal level three  
DSR ................... data set ready  
DSU ................... data service unit  
DTE ................... data terminal equipment  
DTR ................... data terminal ready  
ES ....................... errored seconds  
EXZ .................... excessive zeros  
FBE..................... F-bit errors  
FCC .................... Federal Communications Commission  
FDL.................... facility datalink  
FEBE.................. far end block error  
HSSI .................. high-speed serial interface  
IP ........................ internet protocol  
KA...................... keep alive  
LAN ................... local area network  
LCV ................... line coding violation  
LED .................... light emitting diode  
LES..................... line errored seconds  
LL....................... local loopback  
LOS.................... loss of signal  
MBE................... M-bit errors  
Mbps ................. megabits per second  
MIB.................... management information base  
ms....................... millisecond  
NC...................... normally closed  
NI ....................... network interface  
NMS .................. network management system  
NO ..................... normally open  
NRZ ................... non-return to zero  
OCU................... office channel unit  
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Appendix C. Acronyms/Abbreviations  
OOF................... out of frame  
OOS................... out of service  
PCV ................... P-bit coding violation  
PES .................... P-bit errored seconds  
POP ................... point of presence  
PPP .................... point-to-point protocol  
PSES .................. P-bit severely errored seconds  
PSTN ................. public switched telephone network  
PVC ................... permanent virtual circuit  
RD ..................... receive data  
RDL................... remote digital loopback  
RL ...................... remote loopback  
RMA.................. return material authorization  
RS ...................... request to send  
RTS .................... request to send  
Rx....................... receive  
SEFS .................. severely errored framing seconds  
SES .................... severely errored seconds  
SLIP................... serial line internet protocol  
SNMP ............... simple network management protocol  
SR ...................... data set ready  
SW56 ................. switched 56  
sync ................... synchronous  
TA ...................... terminal equipment available  
TD ...................... transmit data  
TDM .................. time division multiplexing  
TM ..................... test mode  
TR ...................... data terminal ready  
Tx....................... transmit  
UAS ................... unavailable seconds  
WAN .................. wide area network  
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Appendix C. Acronyms/Abbreviations  
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Appendix D  
Glossary  
10baseT  
Ethernet connector which implements the IEEE standard on 24-gauge,  
unshielded twisted pair wiring.  
AIS  
alarm indication signal. An unframed all ones pattern that replaces the normal  
traffic signal when a failure has been detected. This signal prevents logical con-  
nections from terminating between devices.  
AMI  
alternate mark inversion. A bipolar line-coding format in T1 transmission sys-  
tems whereby successive ones are alternately inverted.  
ANSI  
American National Standards Institute. A non-profit organization that coordi-  
nates voluntary standards activities in the United States.  
asynchronous  
A method of data transmission which allows characters to be sent at irregular  
intervals by preceding each character with a start bit, followed by a stop bit.  
bandwidth  
The bandwidth determines the rate at which information can be sent through a  
channel (the greater the bandwidth, the more information that can be sent in a  
given amount of time).  
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Appendix D. Glossary  
baud rate  
A measure of transmission speed over an analog phone line. Baud rate measures  
the shortest signaling elements per second in the analog signal that a modem  
sends over an analog phone line. Does not necessarily equal the bit rate.  
BERT  
bit error rate test. A test that uses any of a number of stress patterns to test T3,  
T1, FT1, and DDS circuits.  
bipolar  
A signal containing both positive and negative amplitude components.  
bipolar violation  
See BPV.  
bit  
A binary digit representing a signal, wave, or state as either a one or a zero. A bit  
is the smallest unit of information a computer can process.  
bit error  
The receipt of an encoded bit that differs from what was sent by the transmitter.  
bit rate  
The speed at which bits are transmitted, usually expressed in bits per second  
(bps).  
blue alarm (AIS)  
An alarm used in T1/ T3 transmission. In a T3 circuit, blue alarms occur when  
there is a transmission fault located either at or upstream from the transmitting  
terminal. A blue alarm is when consecutive 1010s are received in the informa-  
tion bits.  
bps  
bits per second. The number of bits passing a specific point per second. Exam-  
ples of common rates are kbps (one thousand bits per second) and Mbps (one  
million bits per second). T3 operates at 44.736 Mbps.  
BPV  
bipolar violation. A violation in the alternate mark inversion line code for which  
consecutive 1s are represented by pulses of opposite polarity. BPVs that are not  
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Appendix D. Glossary  
intentional (B8ZS) are counted as errors. Could also be the presence of two con-  
secutive 1 bits of the same polarity on the T-carrier line.  
bridge  
A data communications device that connects two or more networks and for-  
wards packets between them.  
byte  
Generally, an 8-bit quantity of information. This term is used mainly in referring  
to parallel data transfer, semiconductor capacity, and data storage.  
carrier  
The provider of the telecommunication services to the customer site. Carriers  
can be local telephone companies, regional telephone companies, or any inter-  
exchange carrier such as AT&T, Sprint, or MCI.  
C-bit  
An overhead bit in the DS3 string not used for framing, parity, or alarm indica-  
tion.  
CCITT  
Consultive Committee for International Telephony and Telegraphy. A standards  
organization that devises and proposes recommendations for international com-  
munications. See also ANSI.  
CD  
carrier detect. A signal generated by a modem or DSU/ CSU indicating the pres-  
ence of a carrier signal on a communications link.  
channel  
A transmission path between two or more termination points; also called a cir-  
cuit, facility, line, link, or path.  
channel bank  
Equipment in a telephone central office or customer premises that performs  
multi-plexing of lower speed digital channels into a higher speed composite  
channel. The channel bank also detects and transmits signaling information for  
each channel; thereby transmitting framing information so that time slots allo-  
cated to each channel can be identified by the receiver.  
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Appendix D. Glossary  
channel service unit  
See CSU.  
clocking  
An oscillator-generated signal that provides a timing reference for a transmis-  
sion link. A clock provides signals used in a transmission system to control the  
timing of certain functions. The clock has two functions: (1) to generate periodic  
signals for synchronization, and (2) to provide a time base.  
control port  
The electrical interface between the T3SU 300 and the control terminal. The con-  
trol terminal is used to communicate commands to the unit.  
CPE  
CSU  
customer premise equipment. All telecommunications terminal equipment  
located on the customer premises, including telephone sets, private branch  
exchanges (PBXs), data terminals, and customer-owned coin-operated tele-  
phones.  
channel service unit. A device used to connect a digital phone line coming in  
from the phone company to either a multiplexer, channel bank, or directly to  
another device producing a digital signal; for example, a digital PBX, a PC, or  
data communications device. A CSU performs certain line-conditioning and  
equalization functions, and responds to loopback commands sent from the cen-  
tral office. A CSU regenerates digital signals. It monitors them for problems and  
provides a way of testing the digital circuit.  
CTS  
clear to send. A signal on the DTE interface indicating that the DCE is clear to  
send data.  
data communications equipment  
See DCE.  
data service unit  
See DSU.  
dB  
decibel. A unit of measure of signal strength; usually the relation between a  
transmitted signal and a standard signal source.  
D-4  
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Appendix D. Glossary  
DCE  
DDS  
data communications equipment. Device that provides all the functions required  
for connection to telephone company lines and for converting signals between  
telephone lines and DTE. Also see DTE.  
digital data service. A private line digital service for transmitting data end-to-  
end at speeds of 2.4, 4.8, 9.6, and 56 kbps (and in some cases 19.2, 38.4, or 64  
kbps). The systems can use central hub offices for obtaining test access, bridging  
legs of multi-point circuits, and cross connecting equipment. DDS is offered on  
an inter-LATA basis by AT&T and on an intra-LATA basis by the Bell operating  
companies.  
delay  
The amount of time by which a signal is delayed. A round-trip transmission  
delay measurement helps detect possible causes of protocol timeouts.  
DLCI  
datalink communications identifier. A unique number assigned to a PVC end  
point in a frame relay network. Identifies a particular PVC endpoint within a  
user's access channel in a frame relay network and has local significance only to  
that channel.  
DS1  
DS3  
DSU  
DTE  
digital signal level one. Twenty-four DS0 channels make up one DS1 (total band-  
width is 1.544 Mbps).  
digital signal level three. Equivalent of 28 DS1s and 672 DS0s (total bandwidth is  
44.736 Mbps).  
data service unit. A device designed to transmit and receive digital data on digi-  
tal transmission facilities.  
data terminal equipment. The end-user terminal or computer that plugs into the  
termination point (DCE) of a communications circuit. The main difference  
between the DCE and the DTE is that pins two and three are reversed.  
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Appendix D. Glossary  
E1  
Transmission rate of 2.048 Mbps on E1 communications lines. See also T1.  
end device  
The ultimate source or destination of data flowing through a network (some-  
times referred to as DTE).  
end user  
Subscriber who uses (rather than provides) telecommunications services.  
ES  
errored seconds. A second with one or more coding violations (CVs).  
ethernet  
Transmission protocol for packet-switching LANs.  
facilities  
The equipment used by carriers to provide communication services.  
far end  
The distant end to that being considered. Not the end where testing is being car-  
ried out.  
FCC  
FDL  
Federal Communications Commission. The U.S. federal agency responsible for  
regulating interstate and international communications by radio, TV, wire, satel-  
lite, and cable.  
facility datalink. FDL bits provide overhead communication between the termi-  
nal equipment in ESF framing.  
gateway  
A device which enables information to be exchanged between two dissimilar  
systems or networks.  
host computer  
The primary or controlling computer in a multiple computer operation.  
D-6  
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Appendix D. Glossary  
idle code  
In a T3 circuit, an idle code consists of a sequence of 1100 over the entire payload  
bandwidth.  
in-band  
Signaling (dialing, diagnostics, management, configuration, etc.) over the same  
channel used for data.  
IP  
internet protocol. A protocol which provides for transmitting blocks of data  
between hosts identified by fixed-length addresses.  
LAN  
local area network. A privately owned network that offers high-speed communi-  
cations channels to connect information processing equipment in a limited geo-  
graphic area.  
local loopback (LL)  
A type of test used to verify the operation of the local terminal equipment, the  
CSU, and the connection between the two. The signal from the DTE is looped  
back by the CSU and is sent back to the DTE.  
loopback  
The technique for testing the processing circuitry of a communications device.  
May be initiated locally or remotely via a telecommunications circuit. Device  
being tested will echo back received test data. The results are compared with the  
original data.  
LOS  
M13  
Mbps  
loss of signal. Defined as a line state in which no pulses are received for 175 bit  
positions.  
DS1/ DS3 multiplexer that combines up to 28 DS1 channels into one DS3 chan-  
nel. Uses two-stage, bit synchronous TDM.  
Megabits per second (one million bits per second).  
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Appendix D. Glossary  
MIB  
management information base. A database of network management information  
used by SNMP.  
modem  
Acronym for modulator/ demodulator. Equipment that converts digital signals  
to and from analog signals. Used to send digital signals over analog phone lines.  
monitor  
To watch or listen to a signal non-intrusively.  
multi-point circuit  
A single communications circuit that has more than two terminations.  
NC  
normally closed. Relay switch contacts that remain closed when inactive.  
near end  
The unit on-site.  
NI  
network interface. The demarcation point between the CPE and the PSTN.  
normally open. Relay switch contacts that remain open when inactive.  
NO  
NRZ  
non return to zero. A mode in which the digital level is low for a 0 bit and high  
for a 1 bit, and does not return to zero between successive 1 bits.  
out-of-band  
Signaling that is separated from the channel carrying information (voice, data,  
video, etc.). Typically the separation is accomplished by a filter. The signaling  
includes dialing and other supervisory signals.  
point-to-point  
Type of communications link that connects a single device to another single  
device, such as a remote terminal to a host computer.  
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Appendix D. Glossary  
POP  
point of presence. Physical place within a LATA (local access and transport area)  
where a long distance carrier or a cellular provider interfaces with the network  
of the local exchange carrier (LEC). A POP is usually a building serving as the  
point of termination which houses switches and transmission equipment.  
protocol  
A set of rules controlling the orderly exchange of information between stations  
in data communications networks or systems.  
PSTN  
public switched telephone network. Usually refers to the world wide voice tele-  
phone network available for public use.  
red alarm  
Unframed all ones signal (keep alive signal). A red alarm is declared on detec-  
tion of LOS or OOF not caused by an alarm indication signal (AIS) that persists  
for more than two seconds.  
remote configuration  
A feature designed into ADTRAN products that allows remote units to be con-  
figured from a local unit or a VT 100 compatible terminal.  
router  
A device that supports communications between networks. Routers are similar  
to bridges, with the exception that routers provide more functionality (such as  
finding the best route between networks and providing network management  
capabilities).  
service  
The provision of telecommunications to customers by a common carrier, admin-  
istration, or private operating agency, using voice, data, and/ or video technolo-  
gies.  
service provider  
A company that delivers or sells a telecom service.  
SES  
severely errored seconds. A second in which more than 320 code violations  
(CVs) occurred or an OOF condition occurred.  
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Appendix D. Glossary  
signaling  
Communication between switches to set up and terminate calls.  
SNMP  
simple network management protocol. A control and reporting scheme widely  
used to manage devices from different vendors. SNMP operates on top of the  
Internet protocol.  
SR  
data set ready. A signal on the DTE interface that indicates if a connection exists  
and if the devices are ready to start handshaking control signals so communica-  
tions can begin.  
synchronous  
Communications in which the timing is achieved by sharing a single clock. Each  
end of the transmission synchronizes itself with the use of clocks and informa-  
tion sent along with the transmitted data.  
T1  
Transmission rates of 1.544 Mbps are available on T1 communication lines. Also  
referred to as digital signal level 1 (DS-1). See also E1.  
T3  
Transmission rates of 44.736 Mbps are available on T3 communication lines. Also  
referred to as digital signal level 3 (DS-3).  
TDM  
time division multiplexing. A technique for transmitting two or more signals at  
the same time over a single communication medium. This is accomplished by  
allocating channels to the bandwidth for specific increments of time.  
TELNET  
The standard TCP/ IP remote login protocol specified in RFC-854.  
transceiver  
A combination of transmitter and receiver providing both output and input  
interfaces within a single device.  
transmission  
The signaling of data over telecommunications channels.  
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Appendix D. Glossary  
V. 35  
A standard for trunk interface between a network access device and a packet  
network that defines signaling for data rates greater than 19.2 kbps.  
VT 100  
A non-intelligent terminal or terminal emulation mode used for asynchronous  
communications. Used to configure the T3SU 300.  
WAN  
wide area network. A communications network serving geographically separate  
areas. A WAN typically extends a LAN outside the building to link to other  
LANs over telephone lines.  
yellow alarm  
A T3 yellow alarm is an indication sent back toward the source of a failed trans-  
mit circuit in a DS3 two-way transmission path. The X-bits (X1 and X2) are set to  
zero.  
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Appendix D. Glossary  
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Index  
pattern 6-9  
test 6-1, 6-5  
A
active  
blue alarm traps 3-16  
port status 3-6, 4-5  
agent 1-3  
AIS 5-4, 5-5, 5-6  
alarm  
network state 4-2  
alarm block 2-4  
alarm history 5-2  
alarm LED 2-9  
V.35 2-2  
alarm messages 4-2  
alarm relay block 3-19  
alarm state 4-2  
answer on ring 3-22  
applications 7-1  
apply settings 3-7  
auxiliary port 2-4, A-1  
description 2-5  
card slots 2-4  
installation 2-4  
C-bit coding violations 5-5  
C-bit errored seconds 5-6  
CCV 5-5, 5-6  
CD 3-9, 4-7  
setting baud rate 3-14  
setting mode 3-13  
channel bandwidth 3-7  
clear errors 6-11  
clear statistics 5-7  
clock  
source 3-9  
clocking  
B
bad boot sector 3-23  
bad checksum 3-23  
bad RAM address 3-23  
bad RAM data 3-23  
bandwidth 4-6  
baud rate 3-14  
BERT 6-10  
external 3-9  
invert 3-9  
normal 3-9  
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Index-1  
Index  
Com Eqpt Fail (NSA) 4-4  
common equipment fail NSA 3-17  
configuration  
payload loopback test 6-6  
remote payload loopback with  
BERT test 6-8  
DS3 network 3-2  
DTE port 3-4  
remote port payload loopback  
test 6-8  
remote 3-1, 3-2  
system management 3-10  
utilities 3-22  
dial string 3-20  
dialout on trap 3-21  
DS3  
configuration corrupt 3-23  
configuration examples 7-1  
configuration menu 2-8, 3-1  
connecting the unit to a terminal inter-  
face 2-6  
connection timeout 3-21  
control port 2-6, A-1  
CS 3-8, 4-7  
CSES 5-6  
CV 5-5  
diagnostics 6-2  
payload loopback test 6-3, 6-4  
DS3 framing 3-3  
DS3 framing type 4-2  
DS3 interface 2-4, 2-6  
configuration menu 3-2  
DS3 network line 3-3  
DS3 scrambler 3-4  
DTE interface cards  
installing 2-4  
DTE leads 4-6  
DTE port 2-4  
configuration 3-4  
D
data link 3-4  
data mode 6-3, 6-6  
datalink state 4-2  
date  
description 2-5  
setting 3-19  
DTE port LEDs 2-9  
default setting  
reverting to 3-22  
desktop installation 2-3  
diagnostics 2-8, 6-1  
DS3  
status information 4-5  
BERT test 6-5  
Eqpt Fail (NSA) 4-4  
Eqpt Fail (SA) 4-4  
line loopback test 6-4  
remote DS3 loopback test 6-5  
remote payload loopback with  
BERT test 6-5  
provided 2-1  
equipment fail NSA 3-17  
equipment fail SA 3-17  
error  
DTE ports 6-5  
DTE loopback test 6-7  
pay load and DTE loopback test  
6-8  
port status 3-7, 4-5  
ethernet 3-13  
EXZ 5-4  
payload BERT test 6-6  
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interface cable 2-2  
interface cards 1-1  
description 1-4  
HSSI 1-4  
installation 2-4  
V.35 1-4  
interface type 3-6, 4-5  
F
far end alarm traps 3-16  
FBE 5-6  
F-bit errors 5-6  
flash load 3-22  
fractional T3 service application 7-5  
front panel  
description 2-6  
trap 3-15  
IP hosts 3-13  
IP security 3-13  
G
gateway IP address 3-13  
gateway node 3-13  
H
LA 4-6  
hangup 3-22  
LAN port 2-4, 2-6, A-4  
last modem response 3-22  
HSSI 3-6, 3-7, 4-5  
cable 2-2  
HSSI card 1-4  
HSSI interface 2-5  
HSSI interface leads 4-6  
HSSI port 1-1, A-2  
leads 4-6  
alarm 2-9  
I
descriptions 2-9  
DTE port 2-9  
in service 2-9  
in test 2-9, 2-10  
LOS 2-9  
network 2-9  
RD 2-10  
remote active 2-9  
status 2-9  
idle 4-4  
idle signal traps 3-16, 3-17  
idle timeout 3-21  
in service LED 2-9  
in test  
network state 4-2  
port status 4-5  
in test LED 2-9, 2-10  
inactive  
TD 2-10  
port status 3-6, 4-5  
included in shipment 2-1  
initializing string 3-20  
insert error 6-11  
installation 2-1  
installing interface cards 2-4  
installing the unit 2-2  
desktop installation 2-3  
rackmount 2-2  
line coding violations 5-4  
line errored seconds 5-4  
line length 3-3  
line loopback test 6-4  
link down 5-4  
LL 4-7  
loading new software 3-22  
local IP address 3-12  
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Index  
local timing 3-3  
logging out of the system 2-9  
loopback tests 6-1  
LOS 5-4  
BERT test 6-9  
pause between calls 3-21  
payload and DTE loopback test 6-8  
payload BERT test 6-6  
payload loopback test 6-6  
P-bit coding violations 5-5  
P-bit errored seconds 5-5  
P-bit severely errored seconds 5-5  
PCV 5-5  
performance parameters 5-4  
pin assignments 2-3  
auxiliary port A-1  
LOS LED 2-9  
M
M13 3-3  
management port 3-13  
maximum redial attempts 3-21  
MBE 5-6  
M-bit errors 5-6  
menu structure 2-7  
MIB 1-1, 1-3  
modem application 3-13  
modem mode 3-14  
control connector A-1  
HSSI port A-2  
LAN port A-4  
V.35 interface card A-3  
pinouts A-1  
point-to-point multiport application 7-3  
port bandwidth 3-7  
port state 3-7  
port status 4-5  
power up 2-2  
PPP 2-5, 3-1, 3-13  
N
N x 75k blocks 3-7  
near end alarm trap 3-16  
network LEDs 2-9  
network manager 1-3  
network port  
status information 4-2  
network state 4-2  
network test traps 3-17  
normal  
network state 4-2  
not installed  
rackmount installation 2-2  
RD LED 2-10  
port status 3-7  
read community name 3-14  
rear panel 2-3  
description 2-3  
receipt inspection 2-1  
red alarm 4-2, 4-4  
O
OOF 5-4, 5-6  
OOF alarm 4-4  
operation 2-1  
out of frame traps 3-16  
red alarm traps 3-16  
refresh all remote statistics 5-7  
remote active LED 2-9  
remote configuration 3-2, 3-4  
remote DS3 loopback test 6-5  
remote IP address 3-13  
P
password  
default 3-18  
setting 3-18  
Index-4  
T3SU 300 User Manual 61200217L1-1  
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remote login 2-8  
terminal timeout 3-19  
time  
setting 3-19  
timing  
remote management application 7-7  
remote payload loopback with BERT test  
6-5, 6-8  
remote port payload loopback test 6-8  
reset all tests 6-11  
local 3-3  
loop 3-3  
return material authorization (RMA) 1-5  
RL 4-7  
RS 4-7  
TM 4-6, 4-7  
toggle all 3-16  
toggle all traps 3-18  
TR 3-8, 4-7  
transmit clock 3-9  
trap generation 3-15  
trap IP addresses 3-15  
S
save configuration 3-24  
secondary phone number 3-20  
SEFS 5-4  
self test 3-22  
results 3-23  
severely errored framing seconds 5-4  
single port application 7-1  
SLIP 2-5, 3-1, 3-13  
SNMP 1-1, 1-2, 1-3, 2-6, 3-14, 3-15  
specifications B-1  
SR 3-8, 4-7  
UAS 5-4, 5-5, 5-6  
unallocated 75k blocks 3-7  
unavailable seconds 5-4  
unit ID 3-19  
unpacking the unit 2-1  
updating the unit 3-22  
utilities menu 3-22  
statistics 5-1  
statistics menus 2-8  
status  
DTE ports 4-5  
V.35 3-6, 3-7, 4-5  
cable 2-2  
card 1-1, 1-4, A-3  
leads 4-6, 4-7  
VT 100 3-13  
connection 2-6  
status information  
network port 4-2  
status LED 2-9  
status menus 2-8, 4-1  
subnet mask 3-12  
system management 3-11  
T
waiting  
T3 overview 1-2  
TA 4-6  
port status 3-7  
waiting for DTE  
port status 4-5  
warranty 1-5  
write community name 3-15  
TD LED 2-10  
TDM 1-1  
TELNET 1-1, 1-3, 2-6, 3-13  
terminal interface  
connection 2-6  
61200217L1-1  
T3SU 300 User Manual  
Index-5  
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Index  
yellow alarm traps 3-16  
Y
yellow alarm 4-2, 4-4  
Index-6  
T3SU 300 User Manual 61200217L1-1  
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Product Support Information  
Pre-Sales Inquiries and Applications Support  
Please contact your local distributor, ADTRAN Applications Engineering, or  
ADTRAN Sales:  
Applications Engineering  
Sales  
(800) 615-1176  
(800) 827-0807  
Post-Sale Support  
Please contact your local distributor first. If your local distributor cannot help,  
please contact ADTRAN Technical Support and have the unit serial number  
available.  
Technical Support  
(888) 4ADTRAN  
Repair and Return  
If ADTRAN Technical Support determines that a repair is needed, Technical  
Support will coordinate with the Customer and Product Service (CAPS) de-  
partment to issue a Return Material Authorization (RMA) number. For infor-  
mation regarding equipment currently in house or possible fees associated  
with repair, contact CAPS directly at the following number:  
CAPS Department  
(256) 963-8722  
Identify the RMA number clearly on the package (below address), and return  
to the following address:  
ADTRAN Customer and Product Service  
6767 Old Madison Pike  
Progress Center  
Building #6 Suite 690  
Huntsville, Alabama 35807  
RMA # _____________  
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