SIP/2.0 200 OK
   Via: SIP/2.0/TCP PRIVATE-IP:56860;branch=z9hG4bK.uK1Vzf1-X;rport=56860
   From: <sip:address@hidden>;tag=VfRpyMoSO
   To: <sip:address@hidden>;tag=K7F9K46B6DFcH
   Call-ID: 6Fo0gQ-Dd1
   CSeq: 21 INVITE
   Contact: <sip:address@hidden:5080;transport=tcp>
   User-Agent: freeswitch
   Accept: application/sdp
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Supported: timer, path, replaces
   Allow-Events: talk, hold, conference, presence, as-feature-event, dialog, line-seize, call-info, sla, include-session-description, presence.winfo, message-summary, refer
   Session-Expires: 1800;refresher=uas
   Content-Type: application/sdp
   Content-Disposition: session
   Content-Length: 740
   
   v=0
   o=diyUa 1431431731 1431431732 IN IP4 PUBLIC-IP
   s=diyUa
   c=IN IP4 PUBLIC-IP
   t=0 0
   a=msid-semantic: WMS MMrWUXjGHH4pu6p2Xp1hSXwhrFG8JIwm
   m=audio 16008 RTP/AVP 0 101
   a=rtpmap:0 PCMU/8000
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-16
   a=silenceSupp:off - - - -
   a=ptime:20
   a=ssrc:961945546 cname:kN95BiB8PwoasD2f
   a=ssrc:961945546 msid:MMrWUXjGHH4pu6p2Xp1hSXwhrFG8JIwm a0
   a=ssrc:961945546 mslabel:MMrWUXjGHH4pu6p2Xp1hSXwhrFG8JIwm
   a=ssrc:961945546 label:MMrWUXjGHH4pu6p2Xp1hSXwhrFG8JIwma0
   a=ice-ufrag:TTnCHJJYfgXPOj1Z
   a=ice-pwd:X0Vo9mnOICP16H7PrkiYURNZ
   a=candidate:6228883562 1 udp 659136 PUBLIC-IP 16008 typ host generation 0
   a=candidate:6228883562 2 udp 659134 PUBLIC-IP 16009 typ host generation 0