We are using CUCM7.1(3), and try to integrate a fax server in the CUCM, call flow like this Fax server->CUCM trunk->h323 gateway->fax machine
When we do the debug isdn q931, we can see the call was setup, but after a while(around 10 seconds), the call was dropped. it seems that the far end(fax machine) send the disconnect request, please see the message
ISDN Se 0/0/1:15 Q931: RX<-DISCONNECT pd=8 callref = 0x9393
Cause i = 0x8090 - Normal call clearing
Progress Ind i = 0x8288 - In-band info or appropriate now available
ISDN Se 0/0/1:15 Q931: call_disc: PI received in disconnect; Postpone Sending RELEASE for callid 0xE0ED
If I make a call to the fax number using IP phone, there is no problem at all, the call will be released until I hang up the phone
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
Over the last few months, I have had the privilege of working on SI...
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