Avaya CMC1 Testing the integrity of the loopback circuit, Clearing the results of previous tests

Adding or Removing Hardware

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-loopUUCSS 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:

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.

328 Installation, Upgrades and Additions for Avaya CMC1 Media Gateways