Hi Itola; Sorry, same error. Does Freeswitch support media switching (srtp-dtls) between two chrome(sip.js as signal) browsers? Finding when FS runs in media mode: codec causes caller side “488 not acceptable here| incompatible destination ” callee side: “cancel |user not registered” Regards Smile From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Ítalo Rossi Sent: Tuesday, April 05, 2016 8:58 PM To: FreeSWITCH Users Help Cc: freeswitch-users@lists.freeswitch.org Subject: Re: [Freeswitch-users] webrtc: [ERR] mod_sofia.c:2299 CODEC NEGOTIATION ERROR. SDP Set media_mix_inbound_outbound_codecs=true Ítalo Rossi italo@freeswitch.org<mailto:italo@freeswitch.org> IRC chat.freenode.net #freeswitch #freeswitch-dev Bugs? https://freeswitch.org/jira Docs? https://freeswitch.org/jira Chat? https://hipchat.freeswitch.org/gUdAgy0m6 On Apr 4 2016, at 11:45 pm, Quan Huo Sheng <quanhs@stee.stengg.com<mailto:quanhs@stee.stengg.com>> wrote: Hi All; I want to use freeswitch to set up a WebRTC POC (Audio only, udp/tls/rtp/savp). Setup is Anonymous (192.168.199.216/chrome/sipjs:sip-0.7.0.min) ->freeswitch (192.168.199.22) ->1010 (192.168.199.216/chrome/sip-0.7.0.min),just following the information in book “FreeSWITCH 1.6 Cookbook”. If using media bypass mode (inbound-bypass-media == true), all works fine, caller and called can hear each other. But if disabling media bypass mode, call is rejected by FS. FS log shows “[ERR] mod_sofia.c:2299 CODEC NEGOTIATION ERROR. SDP”. Attachment is detailed FS log file. Chrome uses opus 111, FS uses opus 116. Mod_sofia.c::sofia_receive_message() --> sofia_media.c::sofia_media_negotiate_sdp() --> sofia_core_media.c::sofia_core_media_negotiate_sdp(). Help is needed to troubleshoot this issue. Thanks advance. Smile. [This e-mail is confidential and may be privileged. If you are not the intended recipient, please kindly notify us immediately and delete the message from your system; please do not copy or use it for any purpose, nor disclose its contents to any other person. Thank you.] ---ST Electronics Group---