------------------------------------------------------------------------
   REGISTER sip:pbx.mtspace.local SIP/2.0
   Via: SIP/2.0/UDP 10.11.12.101:50568;branch=z9hG4bK-d8754z-a12e2818a396c175-1---d8754z-;rport
   Max-Forwards: 70
   Contact: <sip:109@10.11.12.101:50568;rinstance=293dfd2444cdc371;transport=udp>
   To: "109"<sip:109@pbx.mtspace.local>
   From: "109"<sip:109@pbx.mtspace.local>;tag=2210da23
   Call-ID: NTNjZTgyNWU5ZGNlM2MwMmVhMTgyNDhiMTVjNjA0MTQ
   CSeq: 1 REGISTER
   Expires: 3600
   Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO
   User-Agent: X-Lite 4.7.1 74247-73c45102-W6.2
   Content-Length: 0

   ------------------------------------------------------------------------
send 470 bytes to udp/[10.11.12.101]:50568 at 09:51:24.074181:
   ------------------------------------------------------------------------
   SIP/2.0 405 Method Not Allowed
   v:SIP/2.0/UDP 10.11.12.101:50568;branch=z9hG4bK-d8754z-a12e2818a396c175-1---d8754z-;rport=50568
   From: "109"<sip:109@pbx.mtspace.local>;tag=2210da23
   t:"109"<sip:109@pbx.mtspace.local>;tag=jeeDHp5mygjFS
   Call-ID: NTNjZTgyNWU5ZGNlM2MwMmVhMTgyNDhiMTVjNjA0MTQ
   CSeq: 1 REGISTER
   User-Agent:FreeSWITCH Rocks!
   Allow:INVITE,ACK,BYE,CANCEL,OPTIONS,MESSAGE,INFO,UPDATE,PRACK,NOTIFY,PUBLISH,SUBSCRIBE
   k:precondition,100rel,path,replaces
   l:0

   ------------------------------------------------------------------------