U 2010/06/27 18:46:20.727585 220.224.129.21:5060 -> 87.106.166.145:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP 87.106.166.145;branch=z9hG4bK776b.e75322f4.0.
Via: SIP/2.0/UDP 66.234.138.73:5061;received=66.234.138.73;branch=z9hG4bKa9617065067df792e26a5ed65105dad0;rport=5061.
From: <sip:18182557014@66.234.138.73>;tag=cb03c668354a2033d2da31f4f053bb0f.
To: <sip:37410546747@87.106.166.145>.
Call-ID: BB2ECAED-814A11DF-8DD39643-3FD0180@66.234.138.68.
CSeq: 200 INVITE.
.