BYE sip:10111@192.168.1.103:7001 SIP/2.0
  Via: SIP/2.0/UDP 192.168.1.116:5070;rport;branch=z9hG4bKFe6jS54pt5K6B
  Route: <sip:192.168.1.122;lr=on;ftag=112>
  Max-Forwards: 70
  From: 0010111 <sip:0010111@192.168.1.122>;tag=235vcFp8gSHtF
  To: 10111 <sip:10111@192.168.1.122:7001>;tag=112
  Call-ID: 112-26869@192.168.1.103
  CSeq: 110076879 BYE
  Contact: <sip:mod_sofia@192.168.1.116:5070;transport=udp>
  User-Agent: FREESWITCH Media Gateway
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, PRACK, MESSAGE, SUBSCRIBE, NOTIFY, REFER, UPDATE, REGISTER, INFO, PUBLISH
  Supported: timer, precondition, path, replaces
  Reason: SIP;cause=408;text="ACK Timeout"
  Content-Length: 0
  
  ------------------------------------------------------------------------
2009-01-19 13:40:31 [DEBUG] sofia.c:2529 sofia_handle_sip_i_state() Channel sofia/internal/10111@192.168.1.122:7001 entering state [terminating]
send 316 bytes to udp/[192.168.1.122]:5060 at 18:40:31.154944:
  ------------------------------------------------------------------------
  SIP/2.0 500 Internal Server Error
  Via: SIP/2.0/UDP 192.168.1.122;branch=z9hG4bK855f.d0dc6ad1.0
  Via: SIP/2.0/UDP 192.168.1.103:7001
  From: 10111 <sip:10111@192.168.1.122:7001>;tag=112
  To: 0010111 <sip:0010111@192.168.1.122>;tag=235vcFp8gSHtF
  Call-ID: 112-26869@192.168.1.103
  CSeq: 2 INVITE
  Content-Length: 0