Im trying to implement a simple forking proxy server. In the example below the calling phone (200) is on 192.168.254.1 The called phone (201) is on 192.168.254.2 The proxy is at 192.168.254.254
Following is the Invite received by the proxy from the caller, and the 180 which the proxy sends back to the caller. The phone rings, and the 180 is modified and forwarded back but the caller doesnt get a ring tone. Ive checked them over and over and cant see whats wrong with them. Am I overlooking something here? Thanks for any help Andrew INVITE sip:[email protected];user=phone SIP/2.0 Via: SIP/2.0/UDP 192.168.254.1:5060;branch=z9hG4bK1db88668c5d780ae Contact: <sip:[email protected]:5060;user=phone;transport=udp> To: <sip:[email protected];user=phone> From: <sip:[email protected];user=phone>;tag=4260414991 Call-ID: [email protected] CSeq: 2 INVITE Expires: 300 Allow: ACK, BYE, CANCEL, INVITE, NOTIFY, OPTIONS, REFER, REGISTER, PRACK, UPDATE Content-Type: application/sdp Proxy-Authorization: Digest username="userA",realm="",nonce="1231192060:64976ad5abf3f2b1e8f9d72b7c7e71b9",uri="sip:[email protected]",response="b6e1d9faa7b9dbb897250f531c5cc092",qop=auth-int,nc=00000001,cnonce="f9919a53" Supported: replaces, 100rel User-Agent: Cisco-CP7912/8.0.0-060111A Content-Length: 286 v=0 o=200 10340144 10340144 IN IP4 192.168.254.1 s=Cisco 7912 SIP Call c=IN IP4 192.168.254.1 t=0 0 m=audio 16384 RTP/AVP 0 18 8 101 a=rtpmap:0 PCMU/8000/1 a=rtpmap:18 G729/8000/1 a=fmtp:18 annexb=yes a=rtpmap:8 PCMA/8000/1 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 ================================================================================= SIP/2.0 180 Ringing Via: SIP/2.0/UDP 192.168.254.1:5060;branch=z9hG4bK1db88668c5d780ae Contact: <sip:[email protected]:5060;user=phone;transport=udp> To: <sip:[email protected]:5060>;user=phone;tag=3440312132 From: <sip:[email protected];user=phone>;tag=4260414991 Call-ID: [email protected] CSeq: 2 INVITE Allow: ACK, BYE, CANCEL, INVITE, NOTIFY, OPTIONS, REFER, REGISTER, PRACK, UPDATE Server: Cisco-CP7912/8.0.0-060111A Content-Length: 0 _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
