9hG4bK56565 Via: SIP/2.0/UDP [::0000:1111:2222:33331:2343;comp=sigcomp branch=z9hG4bkkuyrt To: tel:+1-314-555-1234>;tag=g41334 From: sip:mobile1@homenet.com>;tag=34199357834 Call-ID: 7o5452gfvtyrfghdgrtt6900gh CSeq: 17 UPDATE Content-Type: application/sdp Content-Length: O=- 28908445761 28908445762 IN IP6 [::0000:aaaa:bbbb:cccc] t=0 0 C=IN IP6 [::0000:aaaa:bbbb:cccc) m=audio 5434 RTP/AVP 97 96 b=AS:25.4 a=curr:qos local sendrecy a=curr:gos remote sendrecy a=des:qos mandatory local sendrecy a=des:qos none remote sendrecy a=rtpmap: 97 AMR a=fmtp: 97 mode-set=0,2,5,7 ;maxframes=2 a=rtpmap: 96 telephone-event SIP/2.0 200 OK Via: SIP/2.0/UDP [: :0000:1111:2222:33331:2343;comp=sigcomp branch=z9hG4bKkuyrt To: <tel:+1-314-555-1234>;tag=g41334 From: k<sip:mobile1@homenet.com>;tag=34199357834 Call-ID: o5452gfvtyrfghdgrtt6900gh CSeq: 17 UPDATE Content-Type: application/sdp Content-Length: O=- 28908445761 28908445762 IN IP6 [::0000:aaaa:bbbb:cccc] SIP: Understanding the Session Initiation Protocol t=0 0 C=IN IP6 [ : : 0000:aaaa:bbbb:cccc) m=audio 5434 RTP/AVP 97 96 b=AS:25.4 a=curr:qos local sendrecv a=curr:qos remote sendrecv a=des:gos mandatory local sendrecy a=des:qos none remote sendrecy a=rtpmap:97 AMR a=fmtp:97 mode-set=0,2,5,7 ;maxframes=2 a=rtpmap:96 telephone-event SIP/2.0 180 Ringing Via: SIP/2.0/UDP pcscf.homenet.com;branch=z9hG4bka3423 Via: SIP/2.0/UDP cscf.homenet.com;branch=z9hG4bkkut Via: SIP/2.0/UDP pcscf.visitednet.com;branch=z9hGg4bkghf Via: SIP/2.0/UDP (::0000:1111:2222:33331:2343;comp=sigcomp ;branch=z9hG4bkdfewqh Record-Route: ksip:pscsf.homenet.com;lr> <scscf.homenet.com;lr>, ksip:pcscf.visitednet.com;lr> To: :tel:+1-314-555-1234>;tag=g41334 From: k<sip:mobile1@homenet.com>;tag=34199357834 Call-ID: 7o5452gfvtyrfghdgrtt6900gh CSeq: 15 INVITE Contact: <sip:[::0000:aaaa:bbbb:cccc]:8767;comp=sigcomp> Require: 100rel Allow: INVITE, ACK, CANCEL, BYE, PRACK, MESSSAGE, REFER, UPDATE Content-Length: 0 SIP/2.0 180 Ringing Via: SIP/2.0/UDP scscf.homenet.com:branch=z9hG4bkkut Via: SIP/2.0/UDP pcscf.visitednet.com;b