I have a customer with a Cisco2800 in the central office, and some other routers in branch offices. They connect a PBX to the router and make calls to some of those branch offices. Sometimes some calls end with a different error code (for example recovery on timer expiry (102)). The branch offices are using ADSL as in the main office. Somebody knows where can I find the meaning of these cause?
This means that during the configured timer interval the voice gateway has NOT received any Q.931 progress message (PROGRESS, CALL PROCEEDING, ALERTING) from the other side. Run an "debug isdn q.931" debug on your and the other side to confirm this (in case you have an ISDN link between them. For R2 use --> "debug cas").
recovery on timer expiry neds to be looked at in context with call state at q.931 and then you can figure out which timer it was (ie was setup sent and you are waiting for call proceeding , or was call proceeding received and you are waiting for alerting or connect etc)
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