Avaya 555-233-116 manual Running the data test, Value of the Test cpe-loopback

DS1/T1 CPE loopback jack

Running the data test

NOTE:

If you have a G700 Media Gateway, substitute XXXVS for UUCSS in the following command, 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 command exactly where shown. A sample address for a DS1 circuit pack on a G700 Media Gateway might look like this: 002V3.

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.

2.Step through Table 15 to troubleshoot.

Table 15. DS1 Troubleshooting

Condition	Solution
The value of the Test: cpe-loopback-	The loopback jack test is active.
jack field is Pattern 3-in-24
The value of the Synchronized field is N	Retry the test 5 times.
The value of the Synchronized field	Excessive bit errors are likely. Check for
remains N after 5 tries.	intermittent connections or broken wires in an
	SPE receive or transmit pair, and repair as
	necessary. Then repeat step 1.

The value of the Bit-error count field is non-zero

Repeat step 1 several times.

The value of the Synchronized is Y	The DS1 circuit pack has synchronized to the
	looped 3-in-24 pattern and is counting bit
	errors in the pattern.

The value of the Bit-error count field pegs at 75535 or increments by 100s or 1000s each time you repeat step 1.

Suspect loose or corroded connections, severe crosstalk, or impedance imbalances between the two conductors of the receive or transmit pair. Wiring may need replacement.

The value of the Bit-error count field is 0

There are no obvious wiring problems. Verify this by repeating step 1 at 1-minute to

10-minute intervals until you are certain.

If the test reports no errors for 1 minute, the error rate is less than 1 in 108. If the test reports no errors for 10 minutes, the error rate is less than 1 in 109.

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140 Issue 4 October 2002 555-233-116