Mapping SIP responses to ISDN/CAS messages

Unanswered Question
Feb 1st, 2007


Is it possible to send ISDN/CAS Alerting or Progress message back to the originating gateway upon receipt of 100 Trying provisional response from callee?

Also, am I right saying that it is not possible to map ISDN/CAS messages with certain PI values to certain SIP responses?

I have this problem too.
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