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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-167BRI-PORT (ISDN-BRI Port), ABRI-PORT (ASAI ISDN-BRI Port)
10
BRI Port Local LAN Loop Around Test (#618)
This test is destructive.
This test, which verifies the connectivity of a BRI port across the LAN Bus,
executes only if the port is out-of-service. The test aborts if calls associated with
the port are in-progress. Failures of this test indicate either on-board faults
associated with the BRI-PORT hardware on the circuit pack or problems with the
LAN Bus, which is used to form connectivity between the switch and the
BRI-PORT.
The dotted lines in Figure 10-7 show how a Loop Around Test is performed
across the Packet Bus for the D-channel.
1, 2 FAIL The NPE of the tested port was found to be transmitting
in error. This causes noisy and unreliable connections.
Error code 1 indicates that the NPE Crosstalk Test failed
on Channel B1. Error code 2 indicates that the NPE
Crosstalk Test failed on Channel B1.
1. Replace 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 a maximum of 10 times to make sure
it continues to pass.
2. If complaints still exist, examine the station,
connections, and wiring.
Table 10-54. TEST #161 Loop Around Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page