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Cisco BTS 10200 Softswitch Troubleshooting Guide, Release 5.0.x
OL-8723-19
Chapter 14 General Troubleshooting
Protocol Troubleshooting
How to Troubleshoot When the Integrated Services Digital Network Trunk Group Fails to Restore
This section shows how to troubleshoot if the ISDN trunk group fails to restore. Determine if the trunk
group failed to restore by entering the following command:
status trunk-grp id=nnn;
•
If the response shows Trunk group out-of-service (TG_OOS) for the administrative state, then enter
the control command.
status trunk-grp id=100;
Reply : Success: Entry 1 of 1 returned.
TGN_ID -100
RESULT -ADM configure result in success
REASON -ADM executed successful
ADMIN_STATE -ADMIN_OOS <================
OPER_STATE -Trunk group out-of-service
PRIMARY_OPER_STATE -NOT USED
BACKUP_OPER_STATE -NOT USED
control trunk-grp id=nnn;mode=forced; target-state=ins;
•
If the response does not show an operational state of
Trunk group in-service
for the trunk group
(non-facility associated signaling (NFAS) or D-channel backup should also show
ISDN_DCHAN_STATE_INS for the D-channel operational status), then:
–
If the response is
Trunk group out-of-service
, go to Step 1.
–
If the response is
Trunk group restore session fail normal, switchover, or maint
, go to Step 2.
–
If the response is
Trunk group restore establish fail normal, switchover, or maint
, go to Step 3.
–
If the response is
ISDN_DCHAN_STATE_WAIT
or
ISDN_DCHAN_STATE_MB,
go to Step 4.
–
If the response is
Trunk group down session set fail hard normal, or maint
, go to Step 5.
–
If the response is
Trunk group down establish fail hard normal, or maint
, go to Step 6.
–
If the response is
Trunk group delete graceful
, go to Step 7.
Step 1
Trunk group state for facility associated signaling (FAS):
Trunk group out-of-service,
or NFAS:
NFAS
DCHAN_STATE_MOOS
.
This means the administrative state was set to in-service, but the command to go to operational state was
ignored due to bad provisioning.
Things to Check:
Make sure that entries exist for this trunk group in the ISDN D Channel table.