Avaya 555-233-116 manual Condition Solution

Loopback testing with a smart jack

NOTE:

If you have a G700 Media Gateway, substitute XXXVS for UUCSS in the following commands, where XXX is the administered number of the G700 (for example, 002), and VS is the slot number on the G700 of the Media Module (for example, V3). The V is not a variable and needs to be included in the commands exactly where shown. A sample address for a DS1 circuit pack on a G700 Media Gateway might look like this: 002V3.

3.Once you are fairly certain that the test is reporting no errors (after at least 1 error-free minute), confirm that the 3-in-24 pattern error detector is operating. Enter test ds1-loopUUCSS inject-single-bit-error, where UU is the cabinet number, C is the carrier letter, and SS is the slot number of the DS1 board.

4.Display the bit error count again. 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.

Condition	Solution
The value of the Bit-error count field is	Replace the ICSU, and retest.
greater than 1
The value of the Bit-error count field is still	Replace the DS1 circuit pack, and retest.
greater than 1 after you replace the ICSU.
The value of the Bit-error count field is 1	The test passed.

5.End the test. Enter test ds1-loop location end cpe-loopback-jack-test.

6.Wait about 30 seconds for the DS1 to reframe on the incoming signal and clear DS1 facility alarms.

Condition	Solution
Loopback termination fails with	The span is still looped somewhere, possibly at the
an error code of 1313.	loopback jack, at the ICSU, or somewhere in the
	network.

The red LED on the loopback jack is on.

Replace the ICSU, and re-run the test.

Loopback termination still fails.	Replace the DS1 circuit pack, and repeat the test
The DS1 cannot frame on the	There is something wrong with the receive signal into
incoming span’s signal after	the loopback jack from the dumb block or the smart
the loopback jack power down.	jack.
The span failed the service	The problem is in the service provider’s network.
provider’s loopback test.

555-233-116 Issue 4 October 2002 141