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VC-SUMPT
Issue 1 June 2005 2527
VC Summer Port Local TDM Loopback
Test (#1100)
This test is destructive.
This test verifies the connectivity of a VC Summer 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:
● A Loop-Around test across the TDM bus.
● A conference circuit test.
The tests are run in the above order. If the first test fails, the switch returns an Error Code, and
the second test is not executed.
0–3 FAIL The NPE of the tested port was transmitting in error. This causes noisy and
unreliable connections.
1. Replace circuit pack.
PASS The port is correctly using its allocated time slots.
1. Verify that this is not an intermittent problem by repeating this test up to
10 times.
2. If complaints continue, examine the station, connections, and wiring.
Table 898: Test #6 VC-SUMPT Port NPE Crosstalk Test (continued)
Error
Code
Test
Result
Description / Recommendation
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