Hi, I cannot manage to send the right SDP into the INVITE message from FS to my WebRTC client registered on it. The scenario is: WebClient<---wss/srtp---->FS<--rtp-->SIP_Endpoint - FS run in a EC2 instance. - FS/application="bridge" - WebClient run on Internet. Calls from WebClient to SIP_Endpoint works well and FS manages to reply a 200 OK response, after INVITE from WebClient, with a public IP into SDP. Audio is bi-directional, all looks good. However, calls originated on SIP_Endpoint to WebClient makes FS to include its private IP into the DSP for any INVITE toward WebClient (B-leg). I have updated 'tried ext-rtp-ip' to - Public IP address of the instance - private and public STUN services - auto-nat No matter what I do, I always get o=FreeSWITCH 1403050916 1403050917 IN IP4 10.10.1.120 c=IN IP4 10.10.1.120 At the WebClient side (INVITE). The weird is, using the same profiles in FS, calls from WebClient to SIP_Endpoint have no issues. Trace in FS (SIP_Endpoint -> WebClient) ---------------------------------------------------------------------------- 2014-06-18 13:09:50.318354 [NOTICE] switch_channel.c:1053 New Channel sofia/inboundbrowser/61370000000 [02c48e60-f696-11e3-b962-2703af7256ae] 2014-06-18 13:09:50.318354 [DEBUG] mod_sofia.c:4446 (sofia/inboundbrowser/61370000000) State Change CS_NEW -> CS_INIT 2014-06-18 13:09:50.318354 [DEBUG] switch_core_session.c:1384 Send signal sofia/inboundbrowser/61370000000 [BREAK] 2014-06-18 13:09:50.318354 [DEBUG] mod_sofia.c:4516 [zrtp_passthru] Setting a-leg inherit_codec=true 2014-06-18 13:09:50.318354 [DEBUG] mod_sofia.c:4519 [zrtp_passthru] Setting b-leg absolute_codec_string='PCMA@8000h@20i@64000b' 2014-06-18 13:09:50.318354 [DEBUG] switch_core_state_machine.c:467 (sofia/inboundbrowser/61370000000) Running State Change CS_INIT 2014-06-18 13:09:50.318354 [DEBUG] switch_core_state_machine.c:507 (sofia/inboundbrowser/61370000000) State INIT 2014-06-18 13:09:50.318354 [DEBUG] mod_sofia.c:87 sofia/inboundbrowser/61370000000 SOFIA INIT 2014-06-18 13:09:50.318354 [DEBUG] switch_core_media.c:865 Set Local Key [1 AES_CM_128_HMAC_SHA1_80 inline:4hCK5K0NEWULvEWlyp6LEmcPVDwqTu2AUhbh7jqV] 2014-06-18 13:09:50.318354 [DEBUG] switch_core_media.c:865 Set Local Key [1 AES_CM_128_HMAC_SHA1_80 inline:6TEOHAvn7aga7PA7GvEsm/QBsztoMyov4Jv8vvGg] 2014-06-18 13:09:50.318354 [DEBUG] sofia_glue.c:1196 sip:10.10.1.120:5064;transport=udp;lr;ovid=aa2aa1e2 Setting proxy route to sofia/inboundbrowser/61370000000 2014-06-18 13:09:50.318354 [DEBUG] sofia_glue.c:1225 sofia/inboundbrowser/61370000000 sending invite version: 1.5.8b git 68e1a56 2014-02-23 23:59:01Z 64bit Local SDP: v=0 o=FreeSWITCH 1403050916 1403050917 IN IP4 10.10.1.120 s=FreeSWITCH c=IN IP4 10.10.1.120 t=0 0 a=msid-semantic: WMS pulb3IfP3ufkGKJf4haQDJ15jmDs4syk m=audio 10074 RTP/SAVPF 8 101 13 a=rtpmap:8 PCMA/8000 a=rtpmap:101 telephone-event/8000 a=fingerprint:sha-256 6D:40:E1:C3:73:9F:F1:33:DA:7B:4B:1A:F1:2B:74:C7:42:24:EF:3D:84:6A:3B:1A:F9:9D:8B:3B:09:AB:33:AF a=rtcp-mux a=rtcp:10074 IN IP4 10.10.1.120 a=ssrc:3489368462 cname:NKlGirlcLrmh1WnW a=ssrc:3489368462 msid:pulb3IfP3ufkGKJf4haQDJ15jmDs4syk a0 a=ssrc:3489368462 mslabel:pulb3IfP3ufkGKJf4haQDJ15jmDs4syk a=ssrc:3489368462 label:pulb3IfP3ufkGKJf4haQDJ15jmDs4syka0 a=ice-ufrag:4oCxXtt6GWoBfNLT a=ice-pwd:nXpveByQTLXLybxs a=candidate:1887505845 1 udp 659136 10.10.1.120 10074 typ host generation 0 a=candidate:1887505845 2 udp 659136 10.10.1.120 10074 typ host generation 0 a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:4hCK5K0NEWULvEWlyp6LEmcPVDwqTu2AUhbh7jqV a=ptime:20 a=sendrecv ---------------------------------------------------------------------------- What's is wrong here is c=IN IP4 10.10.1.120 (must be public for RTP traffic between WebClient and FS) and a=candidate for public IP is missing (STUN is enabled in FS's profile) Any idea? -- "Efficiency is doing things right; effectiveness is doing the right things (Peter Drucker)" Miguel Oyarzo DevOps & VoIP Engineer Linux User: # 483188 - counter.li.org http://au.linkedin.com/in/mikeaustralia Melbourne, Australia