
BCM 5.0 analog terminal adapter testing 149
Nortel Business Communications Manager 5.0
Configuration — System
NN40170-501 02.04 Standard
September 2009
Copyright © 2009, Nortel Networks
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Confirming correct ATA2 wiring for BCM50
Use an analog phone to test the ATA2 connections.
Procedure steps
Step Action
1 Use an analog phone to test the ATA2.
2 Check the following connections:
• ATA2 to the terminal
The resistance must be 200 ohms or less for data applications and 1300
ohms or less for voice applications.
• BCM50 hardware to ATA2
The wiring must be equivalent to 800 m of 0.5 mm wire (2600 ft. of 24 AWG)
or less. Do not use bridge taps and loading coils between the BCM50
hardware and ATA2.
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