Maintenance-Object Repair Procedures
555-233-143
8-986
Issue 1 May 2002
Secondary Signaling Link Hardware
Check (#639)
The ISDN-PRI Signaling Group D-channel port depends on the health of the
TN464C/D UDS1 Interface circuit pack on which it resides. This test will fail if
there are problems with either the ISDN-PRI Secondary D-channel port or the
UDS1 circuit pack. This test will abort if a Secondary D channel is not
administered for the signaling group. If there are problems with the ISDN-PRI
Secondary Signaling Channel port (ISDN-LNK), also investigate the UDS1 circuit
pack (UDS1-BD).
Layer 2 Status Test (#647)
The Layer 2 Status Test checks the layer-2 status of the ISDN-PRI Signaling
Channel (D channel). This test will fail if there is a hardware failure or a facility
problem, or if the primary and secondary ISDN-PRI D channels are not
administered correctly.
The Primary and Secondary Signaling Link Hardware tests (test 637 and 639) and
the Remote Layer 3 Query test (#637) will detect most problems caused by
hardware failures or incorrect administration. However, this layer-3 test cannot
detect end-to-end transmission problems with the standby D channel since
layer-3 messages are not sent on the standby channel.
Table 8-389.
Test #639 Secondary Signaling Link Hardware Check
Error
Code
Test
Result
Description / Recommendation
ABORT
Internal system error
1. Retry the command at 1-minute intervals up to 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.
8
FAIL
There is a problem with the TN464C/D UDS1 Interface circuit pack or the
ISDN-PRI Secondary Signaling Channel (D channel). No ISDN trunk or PRI
endpoint calls can be made until the problem is resolved.
1. Consult the procedures for the UDS1 TN464C/D circuit pack (UDS1-BD)
and the ISDN-PRI Signaling Channel (ISDN-LNK).
PASS
The basic physical connectivity of the Signaling Group’s Secondary D channel
is intact and functional. Try this test repeatedly to ensure the link is up and to
uncover any transitory problems.
Continued on next page
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...