#
U 2013/03/07 17:47:09.095566 184.162.111.242:5060 -> 209.87.247.153:5060
INVITE sip:18885551234@209.87.247.153 SIP/2.0.
Via: SIP/2.0/UDP 127.0.1.1:5060;branch=z9hG4bK-2184280924;rport.
Content-Length: 0.
From: "sipvicious"<sip:100@1.1.1.1>;tag=64313537663739393133633401343434333538333438.
Accept: application/sdp.
User-Agent: friendly-scanner.
To: "sipvicious"<sip:100@1.1.1.1>.
Contact: sip:18885551234@127.0.1.1:5060.
CSeq: 1 INVITE.
Call-ID: 860395422975684047517115.
Max-Forwards: 70.
.

#
U 2013/03/07 17:47:09.098901 209.87.247.153:5060 -> 184.162.111.242:5060
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 127.0.1.1:5060;branch=z9hG4bK-2184280924;rport=5060;received=184.162.111.242.
From: "sipvicious"<sip:100@1.1.1.1>;tag=64313537663739393133633401343434333538333438.
To: "sipvicious"<sip:100@1.1.1.1>.
CSeq: 1 INVITE.
Call-ID: 860395422975684047517115.
Server: kamailio (3.3.4 (x86_64/linux)).
Content-Length: 0.
.

#
U 2013/03/07 17:47:09.102169 209.87.247.153:5060 -> 184.162.111.242:5060
SIP/2.0 500 Service Unavailable.
Via: SIP/2.0/UDP 127.0.1.1:5060;branch=z9hG4bK-2184280924;rport=5060;received=184.162.111.242.
From: "sipvicious"<sip:100@1.1.1.1>;tag=64313537663739393133633401343434333538333438.
To: "sipvicious"<sip:100@1.1.1.1>;tag=e9540c89e4996d97f354a48c1b87d131-7783.
CSeq: 1 INVITE.
Call-ID: 860395422975684047517115.
Server: kamailio (3.3.4 (x86_64/linux)).
Content-Length: 0.
.