BRI Port Local TDM Looparound Test (#619)

Last Updated : Sep 29, 2023 |

This test is destructive.

This test verifies the connectivity of a BRI 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.

This looparound test runs the following individual tests on the two B-channels (B1 and B2) associated with the port:

  • Looparound test across the TDM Bus for B1.

  • Conference Circuit test for B1.

  • Looparound test across the TDM Bus for B2.

  • Conference Circuit test for B2.

The tests are run in the above order. If one test fails, the remaining tests in the sequence are not executed and an error code is returned at that point.

This test runs on BRI-PORT (ISDN-BRI Port).