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VC-DSPPT
Issue 1 June 2005 2515
VC DSP Port Local TDM Loop-Back Test (#1104)
This test is destructive.
This test verifies the connectivity of a VC DSP Port across the TDM bus. It aborts if calls
associated with the port are in progress. Failure of this test indicates an on-board fault
associated with the port hardware on the circuit pack. The Loopback test runs the following
tests:
1. A loop-around test across the TDM bus.
2. A conference circuit test.
The tests are run in the above order; if one test fails, an Error Code is returned and the
remaining tests in the sequence are not executed.
Table 892: Test #1103 NPE Crosstalk Test
Error
Code
Test
Result
Description / Recommendation
1000
1001
ABRT System resources required to run this test are not available. The port may
be busy with a valid call.
1. Retry the command at 1-minute intervals up to 5 times.
2012 ABRT Internal system error
1. Retry the command at 1-minute intervals up to 5 times.
2100 ABRT Could not allocate the necessary resources for this test.
1. Retry the command at 1-minute intervals up to 5 times.
0-3 FAIL The NPE of the tested port was transmitting in error, causing noisy and
unreliable connections.
1. Replace the circuit pack.
PASS The port is correctly using its allocated time slots.
1. To be sure that this is not an intermittent problem, repeat this test up to
10 times.
2. If complaints still persist, examine the station, connections, and wiring.