bbb:cccc]:8767;comp=sigcomp> Require: 100rel Allow: INVITE, ACK, CANCEL, BYE, PRACK, MESSSAGE, REFER, UPDATE Content-Length: 0 SIP/2.0 200 OK Via: SIP/2.0/UDP scscf.homenet.com:branch=z9hG4bkkut Via: SIP/2.0/UDP pcscf.visitednet.com;branch=z9hG4bkghf Via: SIP/2.0/UDP ::0000:1111:2222:33331:2343;comp=sigcomp branch=z9hG4bkdfewqh Record-Route: <sip:pscsf.homenet.com;lr>, <scscf.homenet.com:lr>, <sip:pcscf.visitednet.com;lr> To: tel:+1-314-555-1234>;tag=g41334 From: <sip:mobile1@homenet.com>;tag=34199357834 Call-ID: 7o5452gfvtyrfghdgrtt6900gh SIP: Understanding the Session Initiation Protocol 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/2.0 200 OK Via: SIP/2.0/UDP pcscf.visitednet.com;branch=z9hG4bkghf Via: SIP/2.0/UDP [::0000:1111:2222:33331:2343;comp=sigcomp ;branch=z9hG4bkdfewgh Record-Route: <sip:pscsf.homenet.com;lr>, <scscf.homenet.com;lr>, ksip:pcscf.visitednet.com;lr> To: <tel:+1-314-555-1234>;tag=g41334 From: <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/2.0 200 OK Via: SIP/2.0/UDP [: :0000:1111:2222:33331:2343;comp=sigcomp :branch=z9hG4bkdfewqh Record-Route <sip:pscsf.homenet.com;lr>, <scscf.homenet.com;lr>, <sip:pcscf.visitednet.com;lr> To: <tel:+1-314-555-1234>;tag=g41334 From: <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 ACK sip:[::0000:aaaa:bbbb:cccc]:8767;comp=sigcompSIP/2.0 Via: SIP/2.0/UDR ::0000:1111:2222:33331:2343;comp=sigcomp ;branch=z9hG4bK54343 Route: sip:pcscf.visitednet.com;lr> <scscf.homenet.com;lr> <sip:pscsf.homenet.com;lr> Max-Forwards: 70 To: <tel:+1-314-