flow:
  - start|DEFAULT_ROUTE:
  - start|ROUTE_NET_INFO:
  - return|ROUTE_NET_INFO:
  - start|ROUTE_PRX_REQUEST:
  - start|ROUTE_INITVARS:
  - return|ROUTE_INITVARS:
  - start|ROUTE_INVITE:
  - start|ROUTE_LOAD_CALLEE_DOMAIN_PREF:
  - start|ROUTE_CLEAR_CALLEE_DOMAIN_PREF:
  - return|ROUTE_CLEAR_CALLEE_DOMAIN_PREF:
  - return|ROUTE_LOAD_CALLEE_DOMAIN_PREF:
  - start|ROUTE_FIND_CALLER:
  - start|ROUTE_AUTH:
  - exit|ROUTE_AUTH:
sip_in:
  - '^INVITE'
  - 'Contact: sip:testuser1002@'
  - 'To: <sip:testuser1003@'
  - 'CSeq: 1 INVITE'
  - 'Max-Forwards: 69'
  - 'Content-Type: application/sdp'
sip_out:
  - [
      '^SIP/2.0 100 Trying',
      'CSeq: 1 INVITE',
      'From: "431100222" <sip:testuser1002@',
      'To: <sip:testuser1003@'
    ]
  - [
      '^SIP/2.0 407 Proxy Authentication Required',
      'CSeq: 1 INVITE',
      'From: "431100222" <sip:testuser1002@',
      'To: <sip:testuser1003@'
    ]