flow: - start|DEFAULT_ROUTE: - start|ROUTE_ENTRY: - return|ROUTE_ENTRY: - start|ROUTE_NET_INFO: - return|ROUTE_NET_INFO: - start|ROUTE_CHECK_TEL_URI: - return|ROUTE_CHECK_TEL_URI: - start|ROUTE_PRX_REQUEST: - start|ROUTE_INITVARS: - return|ROUTE_INITVARS: - start|ROUTE_PREPARE_UA: - return|ROUTE_PREPARE_UA: - start|ROUTE_RESTORE_CLUSTERSET: - return|ROUTE_RESTORE_CLUSTERSET: - start|ROUTE_WITHINDLG_RTPENGINE: - return|ROUTE_WITHINDLG_RTPENGINE: - start|ROUTE_OUTBOUND: - start|DEFAULT_SEND: - exit|DEFAULT_SEND: - start|ROUTE_EXIT: - start|ROUTE_RUNTIME: - return|ROUTE_RUNTIME: - exit|ROUTE_EXIT: $avp(proto): ["udp"] sip_in: - '^INVITE' - 'Contact: ' - 'CSeq: \d+ INVITE' - 'Content-Type: application/sdp' sip_out: - [ '^SIP/2.0 100 Trying', 'CSeq: \d+ INVITE', 'From: