User manual
DEFINITY ECS Release 8.2 Maintenance for R8.2csi 
555-233-119  Issue 1
April 2000
Maintenance Objects 
3-729ISDN-SGR (ISDN-PRI Signaling Group) 
3
Secondary Signaling Link Hardware Check (#639)
The ISDN-PRI Signaling Group D-Channel port depends on the health of the 
DS1/UDS1 Interface circuit pack on which it resides. This test will fail if there are 
problems with either the ISDN-PRI Primary D-channel port or the DS1/ UDS1 
circuit pack. If there are problems with the ISDN-PRI Secondary Signaling 
Channel port (ISDN-PLK), also investigate the DS1/UDS1 circuit pack.
See Figure 3-23
 for DS1 connections, Figure 3-24 for UDS1 connections.
PASS A message was composed and sent to the Far-end switch. The ISDN PRI 
specification allows up to two minutes for a reply.
1. Check the Error Log for ISDN-SGR (ISDN-PRI Signaling Group) for 
errors of type 2305 for evidence of a Remote Layer 3 Query failure. If no 
new errors were logged since this test was run, then this switch and the 
Far-end switch processor can exchange call control messages.
2. If there is still a problem with a particular DS1 ISDN Trunk or PRI 
Endpoint Port (B-channel), busyout the trunk or port and run the long 
test sequence, paying particular attention to the results of Test #258 
(ISDN Test Call).
Table 3-307. TEST #639 Secondary Signaling Link Hardware Check 
Error 
Code
Te s t 
Result Description/ Recommendation
ABORT Internal system error
1. Retry the command at 1-minute intervals a maximum of 5 times.
1132 ABORT The Secondary D-channel is not administered for this Signaling Group. 
This is a NORMAL ABORT. Only a Primary D-channel must be 
administered for a Signaling Group.
Continued on next page
Table 3-306. TEST #637 Remote Layer 3 Query — Continued
Error 
Code
Test 
Result Description/Recommendation
Continued on next page










