Initial INVITE
--------------

INVITE sip:12345678901@4.3.2.1 SIP/2.0
Via: SIP/2.0/UDP 1.2.3.4:5060;branch=z9hG4bK239a8329;rport
From: "test" <sip:caller@1.2.3.4>;tag=as3b29138c
To: <sip:12345678901@4.3.2.1>
Contact: <sip:caller@1.2.3.4>
Call-ID: 3b0efc955dcf625c1557bc7c07fb1bc0@1.2.3.4
CSeq: 102 INVITE
User-Agent: vac_res_1
Max-Forwards: 70
Date: Wed, 25 Jan 2006 21:12:03 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Content-Type: application/sdp
Content-Length: 261

v=0
o=root 16204 16204 IN IP4 1.2.3.4
s=session
c=IN IP4 1.2.3.4
t=0 0
m=audio 12088 RTP/AVP 18 0 101
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=noa=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -


REINVITE
--------

INVITE sip:12345678901@4.3.2.1:5060 SIP/2.0
Via: SIP/2.0/UDP 1.2.3.4:5060;branch=z9hG4bK669944ab;rport
From: "test" <sip:caller@1.2.3.4>;tag=as3b29138c
To: <sip:12345678901@4.3.2.1>;tag=473113785
Contact: <sip:caller@1.2.3.4>
Call-ID: 3b0efc955dcf625c1557bc7c07fb1bc0@1.2.3.4
CSeq: 103 INVITE
User-Agent: vac_res_1
Max-Forwards: 70
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Content-Type: application/sdp
Content-Length: 339

v=0
o=root 16204 16205 IN IP4 70.70.37.130
s=session
c=IN IP4 70.70.37.130
t=0 0
m=audio 5094 RTP/AVP 18 0 4 8 111 101
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=noa=rtpmap:0 PCMU/8000
a=rtpmap:4 G723/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:111 G726-32/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -