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4-4
Cisco BTS 10200 Softswitch ISDN Provisioning and Troubleshooting
OL-12436-02
Chapter 4 Maintaining and Troubleshooting the ISDN System
How to Troubleshoot When the ISDN D-Channel Fails to Restore
How to Troubleshoot When the ISDN D-Channel Fails to Restore
This section shows how to troubleshoot if the ISDN D-channel fails to restore. Determine if the
D-channel failed to restore by entering the following command:
status isdn-dchan id=nnn;dchan-type=<primary | backup>;
•
If the response shows that the D-channel is out-of-service for the administrative state, then enter the
control command.
status isdn-dchan id=100;dchan-type=primary
REASON -> ADM executed successfully
RESULT -> ADM configure result in success
ISDN DCHAN ID -> 100
DCHAN TYPE -> PRIMARY
ADMIN STATE -> ADMIN_OOS
OPER STATE -> ISDN D-Channel is Out-Of-Service
Reply : Success: at 2007-01-03 14:56:18 by btsadmin
control isdn-dchan id=nnn;dchan-type=<primary | backup>;target-state=ins
•
If the response does not show that the D-channel is
in-service
(NFAS or D-channel backup may also
show ISDN_DCHAN_STATE_INS for the D-channel operational status), then:
–
If the response is
ISDN D-Channel out-of-service
go to Step 1.
–
If the response is
ISDN D-Channel restore session set fail normal or switchover
go to Step 2.
–
If the response is
ISDN D-Channel restore establish fail normal or switchover
go to Step 3.
–
If the response is
ISDN D-Channel is in Wait for Service Ack
or
ISDN D-Channel is
Maintenance Busy
go to Step 4.
–
If the response is
ISDN D-Channel down session set fail hard normal
go to Step 5.
–
If the response is
ISDN D-Channel down establish fail hard normal
go to Step 6.
–
If the response is
ISDN D-Channel delete graceful
go to Step 7.
Step 1
D-channel state for FAS:
ISDN D-Channel out-of-service,
or NFAS:
ISDN D-Channel is Manual
Out-of-Service
.
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 the correct entries exist in the ISDN D-Channel table.