ISDN-SGR (ISDN-PRI Signaling Group)
Issue 4 May 2002
10-973555-233-123
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-LNK or ISDN-PLK), also investigate the DS1/UDS1 circuit
pack.
Figure 10-55. Secondary Signaling Link Hardware Check for PRI over PI
(Test #639)
2500 ABORT Same as ABORT with no error code.
1. Follow the recommendations for ABORT with no error
code.
2500 FAIL Same as ABORT with no error code.
1. Follow the recommendations for ABORT with no error
code.
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 10-351. TEST #637 Remote Layer 3 Query — Continued
Error
Code
Tes t
Result Description/Recommendation
Continued on next page
PI
TDM
BUS
DS1/UDS1
TO FAR-END
SWITCH HARDWARE
(TN765)
CIRCUIT
PACK CIRCUIT
PACK
INTERFACE
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