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MG-DS1 (DS1 Interface Media Module)
Issue 1 June 2005 1609
FAIL MM710 detects a Loss of Signal alarm. The physical link is broken or
the remote DS1 endpoint is down. All trunks or ports of this MM710 are
out-of-service.
1. Check the physical connection of the MM710 Interface Media
Module and the cable.
2. Check the physical connection of the MM710 Interface Media
Module to the terminating device.
3. Check premise distribution system (or intra-premise wiring) for
physical connection failures.
4. If the MM710 connects to a T1 network facility, call the vendor of the
T1 carrier to diagnose the remote DS1 endpoint.
5. If the MM710 Interface Media Module connects directly to a switch,
call the system technician of the remote switch to diagnose the DS1
endpoint.
6. If the MM710 connects to a line-side terminating device such as a
PRI terminal adapter, contact the vendor of the line-side terminating
device to diagnose the equipment.
1400 FAIL Echo Canceller Function failed, this could be a hardware problem on the
MM710:
1. Enter the busyout board command.
2. Enter the test board long command.
3. Enter the release board command.
4. If Test 138 still fails with EC 1400, replace the board.
1401 FAIL Echo Canceller Function failed, this could be a hardware problem on the
MM710:
1. Enter the busyout board command.
2. Enter the reset board command.
3. Enter the test board long command.
4. Enter the release board command.
5. If the test still fails replace the board.
PASS DS1 signal is present and the physical link is healthy.
Table 592: TEST #138 Loss of Signal Alarm Inquiry Test (continued)
Error
Code
Test
Result
Description/ Recommendation
3 of 4