after make configuration the transport is well "ws-ALL"
i don't know why have this message !! (registration pb)
== WebSocket connection from '192.168.43.148:11262' for protocol 'sip' accepted using version '13'
[2017-09-17 12:11:37] ERROR[5591]: chan_sip.c:17104 register_verify: 'WS' is not a valid transport for 'xxxxxx'. we only use 'UDP,TLS,WS'! ending call.
[2017-09-17 12:11:37] NOTICE[5591]: chan_sip.c:28316 handle_request_register: Registration from '"webrtc" <sip:xxxxx@192.168.43.3:5060>' failed for '192.168.43.148:11262' - Device not configured to use this transport type