User Guide
DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si 
555-230-123 
Issue 1
April 1997
Maintenance Object Repair Procedures 
Page 10-170BRI-PORT (ISDN-BRI Port), ABRI-PORT (ASAI ISDN-BRI Port) 
10
BRI Port Local TDM Loop Around Test (#619)
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 Loop Around Test runs a series of individual tests on the two B-channels (B1 
and B2) associated with the port. It is a collection of the following:
1144 ABORT The PPN Packet Bus is out-of-service.
1. Follow the repair procedures for the Packet Bus.
2. After completing Step 1, execute the test port long 
PCSSpp command, and review the results of the 
BRI Port Local LAN Loop Around Test to verify the 
repair.
2012 ABORT Internal System Error.
2100 ABORT Could not allocate the necessary system resources to 
run this test.
1. Retry the command at one-minute intervals a 
maximum of five times.
2. If the test continues to abort, escalate the problem.
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 pack 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 passed.
Table 10-55. TEST #618 BRI Port Local LAN Loop Around — Continued
Error 
Code
Test 
Result Description/ Recommendation
Continued on next page










