asterisk1*CLI> sip debug ip sip.vtwhite.com SIP Debugging Enabled for IP: 216.120.251.172 12 headers, 0 lines Reliably Transmitting (NAT) to 216.120.251.172:5060: OPTIONS sip:sip.vtwhite.com SIP/2.0 Via: SIP/2.0/UDP 76.4.108.63:5060;branch=z9hG4bK29a596e3;rport From: "Unknown" ;tag=as76819a66 To: Contact: Call-ID: 57a5904a515b50d850ce38c2167d30f9@76.4.108.63 CSeq: 102 OPTIONS User-Agent: Asterisk PBX Max-Forwards: 70 Date: Tue, 29 May 2007 12:09:43 GMT Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY Content-Length: 0 --- asterisk1*CLI> <-- SIP read from 216.120.251.172:5060: SIP/2.0 200 OK Via: SIP/2.0/UDP 76.4.108.63:5060;branch=z9hG4bK29a596e3;rport=10110 From: "Unknown" ;tag=as76819a66 To: ;tag=329cfeaa6ded039da25ff8cbb8668bd2.6b34 Call-ID: 57a5904a515b50d850ce38c2167d30f9@76.4.108.63 CSeq: 102 OPTIONS Accept: */* Accept-Encoding: Accept-Language: en Support: Server: OpenSer (1.1.0-notls (i386/linux)) Content-Length: 0 Warning: 392 216.120.251.172:5060 "Noisy feedback tells: pid=8518 req_src_ip=76.4.108.63 req_src_port=10110 in_uri=sip:sip.vtwhite.com out_uri=sip:sip.vtwhite.com via_cnt==1" --- (13 headers 0 lines) --- Destroying call '57a5904a515b50d850ce38c2167d30f9@76.4.108.63'