
Chapter 10 Testing, Troubleshooting, and Diagnostics 465
Business Communications Manager - Management User Guide
4 Allow sufficient start up time.
5 Assign the prime line.
6 Assign a ringing line if required, for example, auto-answer modems, FAX).
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 Enterprise Edge 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.
Checking for dial tone at the ATA 2
Check to ensure there is dial tone from the set and from the ATA 2 module.
1 If there is no dial tone, replace a single-line telephone for the data communication device.
2 If there is no dial tone at the ATA 2 unit:
a Disconnect the line side of ATA 2. Connect an Business Communications Manager
telephone to the ATA 2 port.
b Check that the connection from ATA 2 to the Business Communications Manager
hardware is functioning correctly (the telephone has dial tone).
Checking for trunk line dial tone to the ATA 2
Use the following steps to check for trunk line dial tone to the ATA 2.
1 Disconnect ATA 2 external line from the Business Communications Manager hardware and
connect the data device directly to this external line.
2 Make a call.
3 If the problem continues, the device or the external line is possibly at fault.
4 Plug the device into a different line.
5 If the problem continues, the device is possibly at fault.
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