Hi! Seems to be I’ve got one of transcoding problem, that can’t solve. Read https://freeswitch.org/confluence/display/FREESWITCH/Codec+Negotiation back and forth. I’m starting originate command with this {bypass_media=false,media_mix_inbound_outbound_codecs=true,inherit_codec=false,proxy_media=false}sofia/gateway/CD5E5A11-88C7-4CC8-BA7A-7D2D3A7D9061/+XXXSOMENUMBER &bridge({inherit_codec=false,proxy_media=false,media_mix_inbound_outbound_codecs=true,bypass_media=false}user/8C9686C8-C09D-D68A-2049-10646BDAF82E) user/… is a WebRTC client. Than I’ve got http://pastebin.com/SdnwjVbP in FS log. Most interesting parts for me Initial INVITE to browser 2016-10-05 16:16:07.868910 [DEBUG] mod_sofia.c:90 sofia/internal/tfv8h2s6@drh7gu4v9q4u.invalid SOFIA INIT 2016-10-05 16:16:07.868910 [DEBUG] sofia_glue.c:1247 sip:tfv8h2s6@45.32.239.166:64637;transport=wss Setting proxy route to sofia/internal/tfv8h2s6@drh7gu4v9q4u.invalid 2016-10-05 16:16:07.868910 [DEBUG] sofia_glue.c:1276 sofia/internal/tfv8h2s6@drh7gu4v9q4u.invalid sending invite version: 1.6.10 -4-726448d 64bit Local SDP: v=0 o=FreeSWITCH 1475657971 1475657972 IN IP4 54.72.230.210 s=FreeSWITCH c=IN IP4 54.72.230.210 t=0 0 a=msid-semantic: WMS doupuZAgf8Kfhjl2SfCLQGvm0Gge2aY5 a=end-of-candidates m=audio 26196 RTP/SAVPF 0 a=rtpmap:0 PCMU/8000 a=fingerprint:sha-256 6B:36:BF:30:8F:1D:21:9B:8F:2D:48:AA:50:E3:70:14:C7:CA:81:55:48:70:33:D6:EA:DA:E6:6F:E6:E4:F8:0A a=setup:actpass a=rtcp-mux a=rtcp:26196 IN IP4 54.72.230.210 a=ssrc:2281406215 cname:ojlJ8LPdKpiRztKh a=ssrc:2281406215 msid:doupuZAgf8Kfhjl2SfCLQGvm0Gge2aY5 a0 a=ssrc:2281406215 mslabel:doupuZAgf8Kfhjl2SfCLQGvm0Gge2aY5 a=ssrc:2281406215 label:doupuZAgf8Kfhjl2SfCLQGvm0Gge2aY5a0 a=ice-ufrag:zcTfIfryLyDDyrzN a=ice-pwd:ALmzm1CXhLEG4eOugxAPCSee a=candidate:6721537086 1 udp 659136 54.72.230.210 26196 typ host generation 0 a=candidate:6721537086 2 udp 659136 54.72.230.210 26196 typ host generation 0 a=rtpmap:13 CN/8000 a=ptime:20 a=sendrecv 2016-10-05 16:16:07.868910 [DEBUG] switch_core_state_machine.c:40 sofia/internal/tfv8h2s6@drh7gu4v9q4u.invalid Standard INIT 2016-10-05 16:16:07.868910 [DEBUG] switch_core_state_machine.c:48 (sofia/internal/tfv8h2s6@drh7gu4v9q4u.invalid) State Change CS_INIT -> CS_ROUTING When I’m answering on browser 2016-10-05 16:16:24.668906 [DEBUG] sofia.c:6962 Channel sofia/internal/tfv8h2s6@drh7gu4v9q4u.invalid entering state [completing][200] 2016-10-05 16:16:24.668906 [DEBUG] sofia.c:6972 Remote SDP: v=0 o=mozilla...THIS_IS_SDPARTA-49.0.1 5004985919660070640 0 IN IP4 0.0.0.0 s=- t=0 0 a=sendrecv a=fingerprint:sha-256 51:29:B3:7B:EC:63:3D:6D:24:FF:95:78:AD:FB:7D:57:24:C9:C7:FD:53:C0:5E:1B:74:82:F5:31:3E:A5:25:68 a=ice-options:trickle a=msid-semantic:WMS * m=audio 61220 RTP/SAVPF 0 c=IN IP4 192.168.0.221 a=rtpmap:0 PCMU/8000 a=candidate:0 1 UDP 2122252543 192.168.0.221 61220 typ host a=candidate:1 1 UDP 2122187007 10.55.13.6 63085 typ host a=end-of-candidates a=ice-pwd:294d65c0e866b77f8331630b07670b40 a=ice-ufrag:9d813241 a=msid:{7da22eec-b29f-724a-b23e-c925e3fb89d6} {d76e3a6f-46d8-a248-a4da-2b1e9094660d} a=rtcp-mux a=setup:active a=ssrc:2323648583 cname:{139a5d9a-b263-954b-9215-77ce2d0565b7} 2016-10-05 16:16:24.668906 [DEBUG] sofia.c:6962 Channel sofia/internal/tfv8h2s6@drh7gu4v9q4u.invalid entering state [ready][200] 2016-10-05 16:16:24.668906 [DEBUG] switch_core_media.c:4276 Audio Codec Compare [PCMU:0:8000:20:64000:1]/[PCMU:0:8000:20:64000:1] 2016-10-05 16:16:24.668906 [DEBUG] switch_core_media.c:4331 Audio Codec Compare [PCMU:0:8000:20:64000:1] ++++ is saved as a match 2016-10-05 16:16:24.668906 [DEBUG] switch_core_media.c:3017 Set Codec sofia/internal/tfv8h2s6@drh7gu4v9q4u.invalid PCMU/8000 20 ms 160 samples 64000 bits 1 channels 2016-10-05 16:16:24.668906 [DEBUG] switch_core_codec.c:111 sofia/internal/tfv8h2s6@drh7gu4v9q4u.invalid Original read codec set to PCMU:0 2016-10-05 16:16:24.668906 [WARNING] switch_core_media.c:3391 NO candidate ACL defined, Defaulting to wan.auto 2016-10-05 16:16:24.668906 [DEBUG] switch_core_media.c:3421 Save audio Candidate cid: 1 proto: UDP type: host addr: 192.168.0.221:61220 2016-10-05 16:16:24.668906 [DEBUG] switch_core_media.c:3421 Save audio Candidate cid: 1 proto: UDP type: host addr: 10.55.13.6:63085 2016-10-05 16:16:24.668906 [DEBUG] switch_core_media.c:3463 Searching for rtp candidate. 2016-10-05 16:16:24.668906 [DEBUG] switch_core_media.c:3463 Searching for rtcp candidate. 2016-10-05 16:16:24.668906 [DEBUG] switch_core_media.c:3507 sofia/internal/tfv8h2s6@drh7gu4v9q4u.invalid no suitable candidates found. 2016-10-05 16:16:24.668906 [DEBUG] switch_core_media.c:4603 No 2833 in SDP. Disable 2833 dtmf and switch to INFO 2016-10-05 16:16:24.668906 [NOTICE] sofia.c:8015 Hangup sofia/internal/tfv8h2s6@drh7gu4v9q4u.invalid [CS_CONSUME_MEDIA] [INCOMPATIBLE_DESTINATION] Main problem - I set all recommended settings in article, but may be missed something? -- Best regards, Igor