P6 [::0000:1111:2222:33331 m=audio 49170 RTP/AVP 97 96 b=AS:25.4 a=curr:qos local none a=curr:qos remote none a=des:gos mandatory local sendrecv a=des:gos none remote sendrecv a=rtpmap:97 AMR a=fmtp: 97 mode-set=0,2,5,7 ;maxframes=2 a=rtpmap:96 telephone-event SIP/2.0 100 Trying Via: SIP/2.0/UDP scscf.homenet.com:branch=z9hG4bk34fd2 Via: SIP/2.0/UDP pcscf.visitednet.com;branch=z9hG4bK7866 Via: SIP/2.0/UDP [::0000:1111:2222:33331:2343;comp=sigcomp branch=z9hG4bKmp17a43 To: ktel:+1-314-555-1234> From: sip:mobile1@homenet.com>;tag=34199357834 Call-ID: o5452gfvtyrfghdgrtt6900gh CSeq: 15 INVITE Content-Length: 0 INVITE sip:mobile2@homenet.com SIP/2.0 Via: SIP/2.0/UDP pcscf.homenet.com;branch=z9hG4bK42234 Via: SIP/2.0/UDP scscf.homenet.com;branch=z9hG4bk34fd2 Via: SIP/2.0/UDP pcscf.visitednet.com;branch=z9hG4bK7866 Via: SIP/2.0/UDP ::0000:1111:2222:33331:2343;comp=sigcomp ;branch=z9hG4bKmp17a43 Max-Forwards: 67 Record-Route: <sip:pscsf.homenet.com;lr> <scscf.homenet.com;lr>, <sip:pcscf.visitednet.com;lr: To: <tel:+1-314-555-1234> From: ksip:mobile1@homenet.com>;tag=34199357834 P-Asserted-Identity: "Alice" k<sip:mobile1@homnet.com>, ktel:+1-972-555-4321> P-Access-Network-Info: Privacy: none P-Charging-Vector: P-Called-Party-ID: <sip:mobile2@homenet.com> P-Media-Authorization: 4504958682459049502984084485948945 SIP: Understanding the Session Initiation Protocol Call-ID: 7o5452gfvtyrfghdgrtt6900gh CSeq: 15 INVITE Contact: <sip:(::0000:1111:2222:33331:2343;comp=sigcomp> Supported: 100rel Require: precondition Allow: INVITE, ACK, CANCEL, BYE, PRACK, MESSSAGE, REFER, UPDATE Security-Verify: ipsec-3gpp; q=0.1; alg=hmac-sha-1-96; spi=34341 ;port1=4323 Content-Type: application/sdp Content-Length: O=- 2890844526 2890844526 IN IP4 ::0000:1111:2222:3333] s=Phone Call C=IN IP6 :0000:1111:2222:33331 m=audio 49170 RTP/AVP 97 96 b=AS:25.4 a=curr:qos local none a=curr:qos remote none a=des:gos mandatory local sendrecv a=des:gos none remote sendrecy a=rtpmap:97 AMR a=fmtp:97 mode-set=0,2,5,7 ;maxframes=2 a=rtpmap:9 telephone-event SIP/