4121550XXXX-A1-3-4121550YYYY # U SERVERIP:5060 -> CUSTOMERIP:5060 INVITE sip:4121550YYYY@CUSTOMERIP:5060 SIP/2.0 Via: SIP/2.0/UDP SERVERIP:5061;branch=z9hG4bK55c84e78;rport Max-Forwards: 70 From: "unknown" ;tag=as26b67bcf To: Contact: Call-ID: 48d40d6216f766c9463695037323cd57@SERVERIP:5061 CSeq: 102 INVITE User-Agent: Astradv11 Date: Fri, 13 Jan 2012 15:00:44 GMT Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH Supported: replaces, timer h323-conf-id: 1397444388-778616961-1234645168-4262432078 Content-Type: application/sdp Content-Length: 723 v=0 o=root 1386845876 1386845876 IN IP4 SERVERIP s=astrad c=IN IP4 SERVERIP b=CT:384 t=0 0 m=audio 17910 RTP/AVP 0 8 18 4 3 110 10 97 111 101 a=rtpmap:0 PCMU/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:18 G729/8000 a=fmtp:18 annexb=no a=rtpmap:4 G723/8000 a=fmtp:4 annexa=no a=rtpmap:3 GSM/8000 a=rtpmap:110 speex/8000 a=rtpmap:10 L16/8000 a=rtpmap:97 iLBC/8000 a=fmtp:97 mode=30 a=rtpmap:111 G726-32/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv