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
Tes t
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
To Next Page
Loading...
