DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-278BRI-PORT (ISDN-BRI Port), ABRI-PORT (ASAI ISDN-BRI Port)
3
BRI Port Local TDM Loop Around Test (#619)
This test is destructive.
This test verifies the connectivity of a BRI port ac ross the TDM Bus. It aborts if
calls associated with the p ort are in progress. Failure of this test indic ates an
on-board fault associated with the port hardware on the circ uit pack.
This Loop Around Test runs a series of individual tests on the two B-c hannels (B1
and B2) associated with the port. It is a collection of the foll owing:
■A Loop Around Test across the TDM Bus for B1.
■A Conference Circuit Test for B1.
■A Loop Around Test across the TDM Bus for B2.
■A Conference Circuit Test for B2.
The tests are run in the above order. If one fails, the remaining tests in the
sequence are not executed . An error code is returned at th at point.
This test is not executed for ABRI-PORT/ATT-PORT/LGATE-PT/ATTE-PT because
the B-channels associated with the port are not used by ASAI or Luc ent adjuncts.
The do tted li nes in F igure 3-13 show how a Loop Around Test is performed for the
B-channels. The figure shows a terminal c onnected to a BRI line board using a
TN556. If a TN2198 is used, the terminal would be c onnected to a NT1, and the
NT1 to the BRI board.
FAIL The Loop Around Test has failed.
1. If the test fails repeatedly, attempt to reset the circuit pack if the other
ports on the board are not in use. Reset the circuit pa ck by issuing the
busyout board PCSS and the reset board PCSS commands.
2. If the test fails again, execute test pkt P on the G3MT terminal. If this
fails, follow failure procedures in PKT-BUS section.
3. If tests executed in Step 2 pass, the problem is local to the BRI board.
Replace the circuit pack.
PASS The BRI Port Local LAN Loop Around Test has pa sse d.
Table 3-119. TEST #618 BRI Port Local LAN Loop Around — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page