<--- SIP read from 192.168.1.99:5060 --->
INVITE sip:33670623762@192.168.1.21 SIP/2.0
Record-Route: <sip:192.168.1.99;lr=on;ftag=c6ee17f3-0192-dc11-8263-000fea369b8e>
Date: Thu, 15 Nov 2007 16:03:18 GMT
CSeq: 1 INVITE
Via: SIP/2.0/UDP 192.168.1.99;branch=z9hG4bK016a.82acc141.0
Via: SIP/2.0/UDP 192.168.1.21:5089;branch=z9hG4bK029e36f3-0192-dc11-8263-000fea369b8e;rport=5089
User-Agent: Ekiga/2.0.3
From: "2227654902" <sip:2227654902@192.168.1.99>;tag=c6ee17f3-0192-dc11-8263-000fea369b8e
Call-ID: d2e717f3-0192-dc11-8263-000fea369b8e@easy
To: "33670623762@192.168.1.21" <sip:33670623762@192.168.1.21>
Contact: <sip:2227654902@192.168.1.21:5089;transport=udp>
Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,NOTIFY,REFER,MESSAGE
Content-Type: application/sdp
Content-Length: 387
Max-Forwards: 69
P-hint: outbound

v=0
o=- 1195142598 1195142598 IN IP4 192.168.1.21
s=Opal SIP Session
c=IN IP4 192.168.1.21
t=0 0
m=audio 5000 RTP/AVP 101 96 3 107 110 0 8
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=rtpmap:96 SPEEX/16000
a=rtpmap:3 GSM/8000
a=rtpmap:107 MS-GSM/8000
a=rtpmap:110 SPEEX/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
m=video 5002 RTP/AVP 31
a=rtpmap:31 H261/90000

<--- Transmitting (no NAT) to 192.168.1.99:5060 --->
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.1.99;branch=z9hG4bK016a.82acc141.0;received=192.168.1.99
Via: SIP/2.0/UDP 192.168.1.21:5089;branch=z9hG4bK029e36f3-0192-dc11-8263-000fea369b8e;rport=5089
From: "2227654902" <sip:2227654902@192.168.1.99>;tag=c6ee17f3-0192-dc11-8263-000fea369b8e
To: "33670623762@192.168.1.21" <sip:33670623762@192.168.1.21>
Call-ID: d2e717f3-0192-dc11-8263-000fea369b8e@easy
CSeq: 1 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Contact: <sip:33670623762@192.168.1.21>
Content-Length: 0

<--- Transmitting (no NAT) to 192.168.1.99:5060 --->
SIP/2.0 183 Session Progress
Via: SIP/2.0/UDP 192.168.1.99;branch=z9hG4bK016a.82acc141.0;received=192.168.1.99
Via: SIP/2.0/UDP 192.168.1.21:5089;branch=z9hG4bK029e36f3-0192-dc11-8263-000fea369b8e;rport=5089
From: "2227654902" <sip:2227654902@192.168.1.99>;tag=c6ee17f3-0192-dc11-8263-000fea369b8e
To: "33670623762@192.168.1.21" <sip:33670623762@192.168.1.21>;tag=as531946bf
Call-ID: d2e717f3-0192-dc11-8263-000fea369b8e@easy
CSeq: 1 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Contact: <sip:33670623762@192.168.1.21>
Content-Type: application/sdp
Content-Length: 182

v=0
o=root 3853 3853 IN IP4 192.168.1.21
s=session
c=IN IP4 192.168.1.21
t=0 0
m=audio 12842 RTP/AVP 8
a=rtpmap:8 PCMA/8000
a=silenceSupp:off - - - -
a=ptime:20
a=sendrecv

<--- Reliably Transmitting (no NAT) to 192.168.1.99:5060 --->
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.1.99;branch=z9hG4bK016a.82acc141.0;received=192.168.1.99
Via: SIP/2.0/UDP 192.168.1.21:5089;branch=z9hG4bK029e36f3-0192-dc11-8263-000fea369b8e;rport=5089
Record-Route: <sip:192.168.1.99;lr=on;ftag=c6ee17f3-0192-dc11-8263-000fea369b8e>
From: "2227654902" <sip:2227654902@192.168.1.99>;tag=c6ee17f3-0192-dc11-8263-000fea369b8e
To: "33670623762@192.168.1.21" <sip:33670623762@192.168.1.21>;tag=as531946bf
Call-ID: d2e717f3-0192-dc11-8263-000fea369b8e@easy
CSeq: 1 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Contact: <sip:33670623762@192.168.1.21>
Content-Type: application/sdp
Content-Length: 182

v=0
o=root 3853 3854 IN IP4 192.168.1.21
s=session
c=IN IP4 192.168.1.21
t=0 0
m=audio 12842 RTP/AVP 8
a=rtpmap:8 PCMA/8000
a=silenceSupp:off - - - -
a=ptime:20
a=sendrecv

...

Retransmitting #6 (no NAT) to 192.168.1.99:5060:
SIP/2.0 200 OK

...