ISDN-TRK (DS1 ISDN Trunk)
Issue 4 May 2002
10-983555-233-123
Table 10-354. ISDN-PRI Trunk Service States (Test #161 Loop Around Test)
Service State Alarm* Possible Cause Possible Solution
out-of-service/NE Warning Trunk is demand busied out. Enter release trunk
grp#/mbr#.
Minor NPE Crosstalk Test (#6)
failed.
Replace DS1/UDS1
circuit pack.
None DS1 or UDS1 circuit pack
lost its signal.
Is the DS1/UDS1 circuit
pack or cable removed?
Is the far-end switch
restarting? Check circuit
pack using procedures in
DS1-BD or UDS1-BD.
out-of-service/FE Warning Unadministered far-end Administer corresponding
trunk on far-end switch.
Warning The far-end trunk is busied
out.
Check the status of the
far-end switch.
pending-in-service,
pending-maint
None Maintenance message was
sent and the switch is
waiting up to 2 min. for a
reply from the far-end.
Wait 2 minutes and check
service state after the
pending state has
cleared.
maint-NE None ISDN test call in progress
(test trunk long and test
isdn-testcall)
Wait several minutes for
test to finish and check
status again.
None System link has been busied
out by command.
Check link status.
Release link with release
link link#.
maint-FE Warning Signaling channel has been
down for over 90 sec.
Consult ISDN-SGR
and/or ISDN-LNK.
Far-end signaling channel
may be busied out, or the
far-end switch may
currently be restarting.
Warning Repeated failure of far end
to respond to messages.
Maintenance software will
periodically try to resend
messages. You can
speed the process with
test trunk grp#/mbr#
and/or test signaling-gr
#.
Warning The far-end trunk is being
tested.
Check status of the
far-end switch. Wait for
testing to finish.
in-service None Normal operating state
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