recv 293 bytes from udp/[216.115.69.144]:5060 at 06:23:34.578699:
   ------------------------------------------------------------------------
   SIP/2.0 100 Trying
   Via: SIP/2.0/UDP xx.xx.xx.xx:5080;rport=5080;branch=z9hG4bKDZjy6pQ6mHv9H
   From: "100" <sip:FLOWROUTE_AUTH_USER_NAME@sip.flowroute.com>;tag=m0XyZZpcD5yNp
   To: <sip:8006522253@sip.flowroute.com>
   Call-ID: 98f1349f-8804-1236-93b5-5a159c6a8e23
   CSeq: 118742643 INVITE
   Content-Length: 0

   ------------------------------------------------------------------------
recv 466 bytes from udp/[216.115.69.144]:5060 at 06:23:34.620955:
   ------------------------------------------------------------------------
   SIP/2.0 407 Proxy Authentication Required
   Via: SIP/2.0/UDP xx.xx.xx.xx:5080;rport=5080;branch=z9hG4bKDZjy6pQ6mHv9H
   From: "100" <sip:FLOWROUTE_AUTH_USER_NAME@sip.flowroute.com>;tag=m0XyZZpcD5yNp
   To: <sip:8006522253@sip.flowroute.com>;tag=870a5b262384e4f9f82f59836d699db5.c76a
   Call-ID: 98f1349f-8804-1236-93b5-5a159c6a8e23
   CSeq: 118742643 INVITE
   Proxy-Authenticate: Digest realm="sip.flowroute.com", nonce="Wn0/klp9PmbLFj+Q7wcr3USxoQQ7o1vm", qop="auth"
   Content-Length: 0

   ------------------------------------------------------------------------
send 371 bytes to udp/[216.115.69.144]:5060 at 06:23:34.621025:
   ------------------------------------------------------------------------
   ACK sip:8006522253@sip.flowroute.com SIP/2.0
   Via: SIP/2.0/UDP xx.xx.xx.xx:5080;rport;branch=z9hG4bKDZjy6pQ6mHv9H
   Max-Forwards: 69
   From: "100" <sip:FLOWROUTE_AUTH_USER_NAME@sip.flowroute.com>;tag=m0XyZZpcD5yNp
   To: <sip:8006522253@sip.flowroute.com>;tag=870a5b262384e4f9f82f59836d699db5.c76a
   Call-ID: 98f1349f-8804-1236-93b5-5a159c6a8e23
   CSeq: 118742643 ACK
   Content-Length: 0

   ------------------------------------------------------------------------
send 1450 bytes to udp/[216.115.69.144]:5060 at 06:23:34.621239:
   ------------------------------------------------------------------------
   INVITE sip:8006522253@sip.flowroute.com SIP/2.0
   Via: SIP/2.0/UDP xx.xx.xx.xx:5080;rport;branch=z9hG4bKe8BQ8H89HtjvD
   Max-Forwards: 69
   From: "100" <sip:FLOWROUTE_AUTH_USER_NAME@sip.flowroute.com>;tag=m0XyZZpcD5yNp
   To: <sip:8006522253@sip.flowroute.com>
   Call-ID: 98f1349f-8804-1236-93b5-5a159c6a8e23
   CSeq: 118742644 INVITE
   Contact: <sip:gw+734f3fb7-b49d-40e1-8384-f7df559e91eb@xx.xx.xx.xx:5080;transport=udp;gw=734f3fb7-b49d-40e1-8384-f7df559e91eb>
   User-Agent: FreeSWITCH
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY
   Supported: timer, path, replaces
   Allow-Events: talk, hold, conference, refer
   Proxy-Authorization: Digest username="FLOWROUTE_AUTH_USER_NAME", realm="sip.flowroute.com", nonce="Wn0/klp9PmbLFj+Q7wcr3USxoQQ7o1vm", cnonce="mP08P4gEEja1k1oVnGqOIw", algorithm=MD5, uri="sip:8006522253@sip.flowroute.com", response="517c0d2368d5545f1b022131aab58b20", qop=auth, nc=00000001
   Content-Type: application/sdp
   Content-Disposition: session
   Content-Length: 295
   X-accountcode: xx.xx.xx.xx
   X-FS-Support: update_display,send_info
   Remote-Party-ID: "100" <sip:100@sip.flowroute.com>;party=calling;screen=yes;privacy=off

   v=0
   o=FreeSWITCH 1518134822 1518134823 IN IP4 xx.xx.xx.xx
   s=FreeSWITCH
   c=IN IP4 xx.xx.xx.xx
   t=0 0
   m=audio 22592 RTP/AVP 0 8 3 101 13
   a=rtpmap:0 PCMU/8000
   a=rtpmap:8 PCMA/8000
   a=rtpmap:3 GSM/8000
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-16
   a=rtpmap:13 CN/8000
   a=ptime:20
   ------------------------------------------------------------------------
2018-02-09 06:23:34.619808 [DEBUG] sofia.c:7084 Channel sofia/external/8006522253 entering state [calling][0]
recv 293 bytes from udp/[216.115.69.144]:5060 at 06:23:34.657683:
   ------------------------------------------------------------------------
   SIP/2.0 100 Trying
   Via: SIP/2.0/UDP xx.xx.xx.xx:5080;rport=5080;branch=z9hG4bKe8BQ8H89HtjvD
   From: "100" <sip:FLOWROUTE_AUTH_USER_NAME@sip.flowroute.com>;tag=m0XyZZpcD5yNp
   To: <sip:8006522253@sip.flowroute.com>
   Call-ID: 98f1349f-8804-1236-93b5-5a159c6a8e23
   CSeq: 118742644 INVITE
   Content-Length: 0

   ------------------------------------------------------------------------
recv 374 bytes from udp/[216.115.69.144]:5060 at 06:23:34.699004:
   ------------------------------------------------------------------------
   SIP/2.0 403 Destination Blacklist - support@flowroute.com
   Via: SIP/2.0/UDP xx.xx.xx.xx:5080;rport=5080;branch=z9hG4bKe8BQ8H89HtjvD
   From: "100" <sip:FLOWROUTE_AUTH_USER_NAME@sip.flowroute.com>;tag=m0XyZZpcD5yNp
   To: <sip:8006522253@sip.flowroute.com>;tag=870a5b262384e4f9f82f59836d699db5.501c
   Call-ID: 98f1349f-8804-1236-93b5-5a159c6a8e23
   CSeq: 118742644 INVITE
   Content-Length: 0

   ------------------------------------------------------------------------
send 371 bytes to udp/[216.115.69.144]:5060 at 06:23:34.699099:
   ------------------------------------------------------------------------
   ACK sip:8006522253@sip.flowroute.com SIP/2.0
   Via: SIP/2.0/UDP xx.xx.xx.xx:5080;rport;branch=z9hG4bKe8BQ8H89HtjvD
   Max-Forwards: 69
   From: "100" <sip:FLOWROUTE_AUTH_USER_NAME@sip.flowroute.com>;tag=m0XyZZpcD5yNp
   To: <sip:8006522253@sip.flowroute.com>;tag=870a5b262384e4f9f82f59836d699db5.501c
   Call-ID: 98f1349f-8804-1236-93b5-5a159c6a8e23
   CSeq: 118742644 ACK
   Content-Length: 0