[Freeswitch-users] 488 INCOMPATIBLE DESTINATION with Firefox 55.03

Hi all, I am testing WebRTC calls with Firefox 55.03 and I have a problem receiving calls. The case is that FreeSWITCH receives a call with G711 codec from an external Asterisk, but when it processes INVITE, it receives a 488 from the browser: ====================================================================== nta.c: 3297 agent_recv_response () nta: received 488 Not Acceptable Here for INVITE (112529915) ====================================================================== Any idea what may be going on? An additional note: calls from the navbegador to this same Asterisk are generated correctly, and in Chrome the 2 cases work correctly. Regards, Agustí Ubalde