Ata 2 Does Not Function; Checking The Wiring - Nortel BCM1000 Installation And Maintenance Manual

If the emergency telephone is connected to the CTM, use the following procedure:
Check that the system has a CTM installed.
1
Check that there is no dial tone at the emergency telephone.
2
Replace the CTM.
3

ATA 2 does not function

If the Business Communications Manager ATA 2 does not function. Follow these steps to
troubleshoot the problem.
Make sure there is ac power connected to the ATA 2 unit.
1
Make sure that ATA 2 is in the Tones OFF mode. (For Data Applications only.)
2
Correctly configure the ATA 2 telephone port for data communication.
3
Allow sufficient start up time.
4
Assign the prime line.
5
Assign a ringing line if required, for example, auto-answer modems, FAX).
6

Checking the wiring

Check the following connections:
• ATA 2 to the terminal.
The resistance must be 200 ohms or less for data applications and 1,300 ohms or less for voice
applications.
• Business Communications Manager hardware to ATA 2.
The wiring must be equivalent to 800 m of 0.5 mm wire (2,600 ft. of 24 AWG) or less. Do not
use bridge taps and loading coils between the Business Communications Manager hardware
and Business Communications Manager ATA 2.
• External line to the Business Communications Manager system.
Ensure the external line is correctly connected to the BCM1000 and make sure there is dial
tone.
Chapter 14 Troubleshooting
Installation and Maintenance Guide
165