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328 Installation, Upgrades and Additions for Avaya CMC1 Media Gateways
Testing the integrity of the loopback circuit
Now perform the first part of the actual loopback test.
1. At the management terminal, enter test ds1-loop UUCSS cpe-loopback-jack, where
UU is the cabinet number, C is the carrier letter, and SS is the slot number of the DS1 board.
The loopback jack powers up. Active, DS1 facility alarms (if any) clear. After about 20
seconds, the first set of results appears on the terminal.
2. If FAIL appears on the terminal display, there may be a fault in the wiring between the ICSU
and the loopback jack or the loopback jack may itself be faulty. Isolate the problem by
replacing the loopback jack and repeating Step 1.
3. If FAIL still appears after the loopback jack has been replaced, suspect a wiring problem.
Replace the cable between the ICSU and the loopback jack. Then repeat Step 1.
4. When PASS appears on the terminal, proceed with the second part of the test, checking the
integrity of transmitted data.
Testing the integrity of data sent over the loop
Now perform the second part of the test, checking for data errors.
Note:
Note: The loss of signal (LOS) alarm (demand test #138) is not processed during this
test while the 3-in-24 pattern is active.
Clearing the results of previous tests
1. Zero out the bit-error counter. At the management terminal, enter clear meas ds1 loop
UUCSS, where UU is the cabinet number, C is the carrier letter, and SS is the slot number of
the DS1 board.
2. Zero out the performance measurement counter. At the management terminal, enter clear
meas ds1 log UUCSS, where UU is the cabinet number, C is the carrier letter, and SS is
the slot number of the DS1 board.
3. Zero out the ESF error count. At the management terminal, enter clear meas ds1 esf
UUCSS, where UU is the cabinet number, C is the carrier letter, and SS is the slot number of
the DS1 board.
Running the data test
1. Display the bit error count. At the management terminal, enter list meas ds1 sum
UUCSS, where UU is the cabinet number, C is the carrier letter, and SS is the slot number of
the DS1 board.