4-8
Cisco BTS 10200 Softswitch ISDN Provisioning and Troubleshooting
OL-12436-02
Chapter 4 Maintaining and Troubleshooting the ISDN System
Checking the Status of a Trunk Termination
Trunk Static State Is Set to Locally Blocked
Perform the following steps to check the
TRUNK REASON
field if the
TRUNK STATIC STATE
is set to
locally blocked (LBLK) state.
Step 1
If the TRUNK REASON is set to MAINT-OOS, then a user has manually taken the trunks out of service.
The user must manually put the trunks into the in-service mode.
Use the
control
command on the specified trunk to put the trunk back into the in-service mode.
Clear the MAINT-OOS. Trunks should be in active or idle mode and ready for use.
Step 2
If the TRUNK REASON is set to SIGNALLING-FAULT, then the D channels are not in-service. Check
the D-channels ADMIN and OPER states.
•
If the D-channel ADMIN state is ADMIN_OOS, use the
control
command to put the D-channel into
in-service mode.
•
If the D-channel ADMIN state is ADMIN _INS, verify that the D-channel OPER-STATE is
IN-SERVICE (see the
How to Troubleshoot When the ISDN D-Channel Fails to Restore
section in
case of any issues).
•
Clear any SIGNALLING-FAULT states. Trunks must be in active or idle mode and ready for use.
Step 3
If TRUNK REASON is set to TERM_FAULT, then the terminations are in FAULTY states. Verify the IP
connectivity from the CA to the gateway.
a.
Clear any termination faults at the gateway by turning off, then turning on, MGCP (use the mgcp,
no mgcp procedure on the media gateway).
b.
Clear any TERM_FAULT on the Cisco BTS 10200 Softswitch. Trunks must be in active or idle mode
and ready for use.
Trunk Static State Is Set to TRNS
Perform the following steps when trunk static state is set to TRNS.
Note
If trunk static state is set to TRNS, then the PBX has not responded with a SERVICE_ACK or
RESTART_ACK for the service or restart message set by the Call Agent.
Step 1
Verify that the initialization procedure, as depicted by the associated isdn-dchan-profile, and as used by
PBX, is synchronized.
Step 2
Verify that the isdn-service-supp token is set to N if PBX does not support service messages.