<--- SIP read from 10.0.0.252:5060 --->
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 10.9.0.17:5060;branch=z9hG4bK4dc3e2d0;rport;received=10.9.0.17
From: <sip:ch@10.0.0.252>;tag=as2dfeb493
To: <sip:ch@10.0.0.252>
Call-ID: 4b30a92110be7dd61758ccb34412e49e@10.0.0.229
CSeq: 106 REGISTER
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Contact: <sip:ch@10.0.0.252>
Content-Length: 0