Telstra NTU-45 Quick Reference Manual

S/I Number Item Description

511/692 NTU-45, HSSI B/U 48VDC+240VAC Power Pack
511/693 NTU-45, HSSI B/U 48VDC
511/722 Power Pack, 48VDC for NTU-45/45E -AULT
511/694 Power Pack, 240VAC – 48VDC for NTU-45
511/695 NTU-45 Module,V35 Service Interface
511/696 NTU-45 Module,HSSI Service Interface
511/707 Tray, Cable for NTU-45

61200660L1-13A

NTU-45

Quick Reference
Guide

Service Difficulties & Faults

If you encounter any difficulties or faults, please contact:
Global Customer Service – 1800 028 555
Or your Account Executive.

4. Loop Select

5. Loop Local

6. Loop Remote

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.

When a loop is in place, pressing this button will turn the loop off.

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.

When a loop is in place, pressing this button will turn the loop off.

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.

When a loop is in place, pressing this button will turn the loop off.

7. DTE Port LEDs (Customer Interfaces)

3. Optical Interface LEDs (Network Interface - Telstra Use Only)

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

customer's equipment (DTE)

RED indicates that there is a problem with the interface.

IN SERVICE (Green)

Indicates when the NTU-45 is powered on and functioning correctly .

2. Remote Active LED (Telstra use only)

Remote Active
(Yellow)

Indicates when the NTU-45 is being managed locally, or via a Telnet session

TEST (Yellow)

Indicates when a Loop or Bit Error Rate test is active on the Optical Interface.

ALARM (Yellow or

Red)

YELLOW indicates that there is a problem with the Remote NTU-45.

LOS (Red)

Indicates that the NTU-45 cannot detect any signal on the Optical Interface.

RED indicates that the NTU-45 cannot align with the incoming signal.

In Test (Yellow)

Indicates when a Loop or Bit Error Rate test is active on the Interface.

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

RD (Green)

Indicates that the interface is receiving data from the Network