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BRI-PORT (ISDN-BRI Port)
Issue 1 June 2005 693
BRI Port Local LAN Loop Around Test (#618)
This test is destructive.
This test verifies the connectivity of a BRI port across the LAN Bus and 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 34: Path of the BRI Port Local LAN Loop Around
on page 693 show
how a Loop Around test is performed across the packet bus for the D channel.
Figure 34: Path of the BRI Port Local LAN Loop Around
PASS The port is correctly using its allocated time slots.
1. To verify that this is not an intermittent problem, repeat this test up to 10
times to make sure it continues passing.
2. If complaints still exist, examine the station, connections, and wiring.
Table 231: Test #617 NPE Crosstalk Test (continued)
Error
Code
Test
Result
Description / Recommendation
2 of 2
BRI LINE
CIRCUIT
PACK
PACKET
INTERFACE
PACKET BUS
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