Looking for s in from-trunk (domain pbx.kicks-ass.net)
Transmitting (NAT) to 64.81.162.90:60171:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.0.100:5060;branch=z9hG4bK600dd8d6;received=64.81.162.90;rport=60171
From: "Unknown" <sip:Unknown@192.168.0.100>;tag=as785303d5
To: <sip:pbx.kicks-ass.net>;tag=as4dd85283
Call-ID: 71ca58924a30bb2d2c39472826737283@192.168.0.100
CSeq: 102 OPTIONS
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Contact: <sip:71.60.125.243>
Accept: application/sdp
Content-Length: 0