Reliably Transmitting (NAT) to 192.168.0.213:5060:
INVITE sip:000387100214@192.168.0.213 SIP/2.0
Via: SIP/2.0/UDP 192.168.0.1:5060;branch=z9hG4bK417580ba;rport
From: "4921123704147" <sip:000387100205@192.168.0.1>;tag=as2c73a935
To: <sip:000387100214@192.168.0.213>
Contact: <sip:000387100205@192.168.0.1>
Call-ID: 5ed9479e722313c5262a908c3ea1dde1@192.168.0.1
CSeq: 102 INVITE
User-Agent: Asterisk PBX
Max-Forwards: 70
Remote-Party-ID: "4921123704147" <sip:000387100205@192.168.0.1>;privacy=off;screen=no
Date: Fri, 23 Jun 2006 01:26:26 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Content-Type: application/sdp
Content-Length: 259

v=0
o=root 8655 8655 IN IP4 192.168.0.1
s=session
c=IN IP4 192.168.0.1
t=0 0
m=audio 16970 RTP/AVP 8 3 0 101
a=rtpmap:8 PCMA/8000
a=rtpmap:3 GSM/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -

---
    -- Called 000387100214
dus-gw2*CLI>
<-- SIP read from 192.168.0.213:5060:
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.0.1:5060;branch=z9hG4bK417580ba;rport
To: <sip:000387100214@192.168.0.213>
From: "4921123704147" <sip:000387100205@192.168.0.1>;tag=as2c73a935
Call-ID: 5ed9479e722313c5262a908c3ea1dde1@192.168.0.1
CSeq: 102 INVITE
Content-Length: 0


--- (7 headers 0 lines)---
dus-gw2*CLI>
<-- SIP read from 192.168.0.213:5060:
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 192.168.0.1:5060;branch=z9hG4bK417580ba;rport
From: "4921123704147" <sip:000387100205@192.168.0.1>;tag=as2c73a935
To: <sip:000387100214@192.168.0.213>;tag=ok202g3itl5ntcvcnrp2j032oce3u54d
Contact: <sip:000387100214@192.168.0.213>
Call-ID: 5ed9479e722313c5262a908c3ea1dde1@192.168.0.1
CSeq: 102 INVITE
Content-Length: 0


--- (8 headers 0 lines)---
    -- SIP/000387100214-9151 is ringing
Transmitting (NAT) to 192.168.0.254:2051:
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 192.168.0.254:2051;branch=z9hG4bK-8aq4xytu9gsx;received=192.168.0.254;rport=2051
From: "4921123704147" <sip:000387100205@83.125.8.7>;tag=dsra5v73qo
To: <sip:000387100214@83.125.8.7;user=phone>;tag=as506a0318
Call-ID: 3c49cd0304e2-fw57fdeja8au@snom360-000413233BB0
CSeq: 2 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Contact: <sip:000387100214@192.168.0.1>
Content-Length: 0


---
We're at 192.168.0.1 port 19206
Adding codec 0x8 (alaw) to SDP
Transmitting (NAT) to 192.168.0.254:2051:
SIP/2.0 183 Session Progress
Via: SIP/2.0/UDP 192.168.0.254:2051;branch=z9hG4bK-8aq4xytu9gsx;received=192.168.0.254;rport=2051
From: "4921123704147" <sip:000387100205@83.125.8.7>;tag=dsra5v73qo
To: <sip:000387100214@83.125.8.7;user=phone>;tag=as506a0318
Call-ID: 3c49cd0304e2-fw57fdeja8au@snom360-000413233BB0
CSeq: 2 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Contact: <sip:000387100214@192.168.0.1>
Content-Type: application/sdp
Content-Length: 156

v=0
o=root 8655 8655 IN IP4 192.168.0.1
s=session
c=IN IP4 192.168.0.1
t=0 0
m=audio 19206 RTP/AVP 8
a=rtpmap:8 PCMA/8000
a=silenceSupp:off - - - -