Service Difficulties & Faults
If you encounter any difficulties or faults, please contact:
Global Customer Service – 1800 028 555
Or your Account Executive.
NTU-45
Quick Reference
Guide
S/I Number
511/692
511/693
511/722
511/694
511/695
511/696
511/707
Item Description
NTU-45, HSSI B/U 48VDC+240VAC Power Pack
NTU-45, HSSI B/U 48VDC
Power Pack, 48VDC for NTU-45/45E -AULT
Power Pack, 240VAC – 48VDC for NTU-45
NTU-45 Module,V35 Service Interface
NTU-45 Module,HSSI Service Interface
Tray, Cable for NTU-45
61200660L1-13A
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NTU-45 Front Panel
Front Panel LEDs
2. Remote Active LED (Telstra use only)
1
2
3
4 5 6
7
Remote Active
Indicates when the NTU-45 is being managed locally, or via a Telnet session
(Yellow)
3. Optical Interface LEDs (Network Interface - Telstra Use Only)
IN SERVICE (Green)
Indicates when the NTU-45 is powered on and functioning correctly .
Indicates when a Loop or Bit Error Rate test is active on the Optical Interface.
YELLOW indicates that there is a problem with the Remote NTU-45.
TEST (Yellow)
ALARM (Yellow or
Red)
RED indicates that the NTU-45 cannot align with the incoming signal.
LOS (Red)
Indicates that the NTU-45 cannot detect any signal on the Optical Interface.
7. DTE Port LEDs (Customer Interfaces)
Status (Green
Yellow or Red)
OFF indicates that there is no card installed
Flashing GREEN indicates that the interface is not configured for service
GREEN indicates that the interface is ready to carry data.
YELLOW indicates that the interface is ready, but cannot detect the
NTU-45 Rear Panel
customer's equipment (DTE)
8
10
12
11
RED indicates that there is a problem with the interface.
In Test (Yellow)
Indicates when a Loop or Bit Error Rate test is active on the Interface.
Laser Radiation
Avoid Exposure to Beam
Laser Class
1
Product
Complies with 21 CFR
During the process of activating a loop from the front panel push buttons,
this LED will Flash, indicating that it is selected but no Loop test exists.
TD (Green)
Indicates that the interface is transmitting data to the Newtork
Indicates that the interface is receiving data from the Network
9
13
14
RD (Green)
Interfaces
Front Panel Push Buttons
1. Local Control Port
(Telstra use only)
4. Loop Select
VT100, EIA-232 Interface for local management
48V DC power interface (Earth, Positive, Negative)
The Loop Select button is used to select the port that is to be looped. It will cycle through
the four ports, causing the respective ports Test LED to flash.
8. Power Cord Strain Relief
DC Power Terminal Block
DTE Ports 2, 3 and 4
9.
When a loop is in place, pressing this button will turn the loop off.
10.
Slots to accomodate optional HSSI or V.35 DTE modules
In-built High Speed Serial Interface (HSSI)
5. Loop Local
11.
DTE Port 1
When a port has been selected using the Loop Select button, pressing the Loop Local
button will initiate a loop on the selected port of the local NTU-45.
12. Alarm Port
(Telstra use only)
Alarm Relay Contacts (Normally Closed, Common, Normally Open)
10BaseT LAN interface for remote management via MACS
Flat-SC Optical interface with separate Transmit and Receive fibres
When a loop is in place, pressing this button will turn the loop off.
Management Port
(Telstra use only)
13.
6. Loop Remote
When a port has been selected using the Loop Select button, pressing the Loop Remote button
will initiate a loop on the selected port of the remote NTU-45.
14. Optical Interface Port
(Telstra use only)
When a loop is in place, pressing this button will turn the loop off.
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