-- IAX2/techsupport-1 answered SIP/3240487-712e
We're at x.x.x.x port 14096
Adding codec 0x4 (ulaw) to SDP
Adding codec 0x8 (alaw) to SDP
Reliably Transmitting (no NAT) to 212.53.40.40:5060:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 212.53.40.40:5060;branch=z9hG4bK196538-lnqxjfj;cgp=etc.tario.ru;upaddr=212.53.35.244;rport;received=212.53.40.40                                                                                                                         
Via: SIP/2.0/UDP 212.53.35.244:50059
Record-Route: <sip:212.53.40.40:5060;lr>
Record-Route: <sip:212.53.40.71:5060;lr>
Record-Route: <sip:rev.728845-212.53.40.71.dialog.cgatepro;lr>
From: "Moscow" <sip:84957370674@tario.net>;tag=189558784-5002041
To: <sip:3240487@sipnet.ru>;tag=as2f76b392
Call-ID: IWF-A5E8E4CD-49C2-11DD-AFCD-AD480C236D1C@212.53.35.244
CSeq: 20456 INVITE
User-Agent: Asterisk
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Max-Forwards: 70
Contact: <sip:3240487@x.x.x.x>
Content-Type: application/sdp
Content-Length: 184

v=0
o=root 4850 4851 IN IP4 x.x.x.x
s=session
c=IN IP4 x.x.x.x
t=0 0
m=audio 14096 RTP/AVP 0 8
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=silenceSupp:off - - - -

---
voip1*CLI> 
<-- SIP read from 212.53.40.40:5060: 
ACK sip:3240487@89.175.172.34 SIP/2.0
Via: SIP/2.0/UDP 212.53.40.40:5060;branch=z9hG4bK196540-lnqxjfj;cgp=etc.tario.ru;upaddr=212.53.35.244;rport
Via: SIP/2.0/UDP 212.53.35.244:50059
Max-Forwards: 69
From: <sip:84957370674@tario.net>;tag=189558784-5002041
To: <sip:3240487@sipnet.ru>;tag=as2f76b392
Call-ID: IWF-A5E8E4CD-49C2-11DD-AFCD-AD480C236D1C@212.53.35.244
CSeq: 20456 ACK
User-Agent: TarioSoftswitch/3.2.10
Content-Length: 0