I am not sure if its some bug or my mistake. I am using topology hiding module (opensips 2.1 version) and I have noticed that Call-id in "Cancel" message is different than "Invite" sent to gateway.
Invite is sent to gateway and we get session progress but call is not picked up, as per fr_timer opensips triggers cancel but call ID in cancel is not same as sent in Invite INVITE sip:11025111111111111@2.2.2.2:5060 SIP/2.0 Via: SIP/2.0/UDP 1.1.1.1:9096;branch=z9hG4bKe5d5.fca1aeb4.0 Max-Forwards: 26 From: "786786" <sip:786786@1.1.1.1:9096>;tag=2B6F7HZaNH02F To: <sip:11025111111111111@2.2.2.2:5060> Call-ID: DLGCH_LkhSV2VxNGNiEgQMMGRhYXxDSF9rcDN+K0QEC2Z7M2ouFFFd CSeq: 79309702 INVITE Contact: <sip:sbc@1.1.1.1:9096;did=775.84850bf2> User-Agent: Opensips Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE Supported: timer, path, replaces Allow-Events: talk, hold, conference, presence, as-feature-event, dialog, line-seize, call-info, sla, include-session-description, presence.winfo, message-summary, refer Content-Type: application/sdp Content-Disposition: session Content-Length: 258 v=0 o=- 22469580 22469580 IN IP4 1.1.1.1 s=Softphone c=IN IP4 1.1.1.1 t=0 0 m=audio 32706 RTP/AVP 18 101 a=rtpmap:18 G729/8000 a=fmtp:18 annexb=no a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 a=ptime:20 a=rtcp:32707 CANCEL sip:11025111111111111@2.2.2.2:5060 SIP/2.0 Via: SIP/2.0/UDP 1.1.1.1:9096;branch=z9hG4bKe5d5.fca1aeb4.0 From: "786786" <sip:786786@1.1.1.1:9096>;tag=2B6F7HZaNH02F Call-ID: a87968d0-babc-1233-189c-d4ae52c9ad43 To: <sip:11025111111111111@2.2.2.2:5060> CSeq: 79309702 CANCEL Max-Forwards: 70 Reason: SIP;cause=480;text="NO_ANSWER" User-Agent: Opensips Content-Length: 0
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