Dobrý den, many thanks. It works as it should. I have been a mistake in configuring the turn server. -- S pozdravem, Ing.Denis Jakovlev mob.tel. 775-415-382 čtvrtek 23. července 2015, 15:28:45, napsal jste: pay attention, you MUST use the "transport" argument for tcp to work, eg: turnServers: { urls:"turn:exam.org:443?transport=tcp", username:"alice", password:"racecar" } On Thu, Jul 23, 2015 at 3:24 PM, Denis Jakovlev <yadenis@seznam.cz> wrote: Dobrý den, That's it I use -- S pozdravem, Ing.Denis Jakovlev mob.tel. 775-415-382 čtvrtek 23. července 2015, 13:56:43, napsal jste: Take a look at coturn, a fork of rfc5766-turn-server, which supports RFC6062, the TCP transport for TURN. On 23 July 2015 at 05:25, Denis Jakovlev <yadenis@seznam.cz> wrote: Hi All, I have one problem. One of my clients is behind the serious firewall and they are banned UDP connection at all. His clients are connected to it via the Internet. I put my own Turn/Stun server (rfc5766-turn-server from Google). It works the same server as the freeswitch. It works fine. The problem follows. When all banned UDP connection - you can not connect (INCOMPATIBLE_DESTINATION). If you allow outgoing UDP At least, that is connected with no problems. Is it even possible connection if one of the parties completely banned UDP connection? I thought that the problem is just the decides the turn server. But I is not working for me. -- S pozdravem, Ing.Denis Jakovlev mob.tel. 775-415-382 _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com Official FreeSWITCH Sites http://www.freeswitch.org http://confluence.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com Official FreeSWITCH Sites http://www.freeswitch.org http://confluence.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org -- Sincerely, Giovanni Maruzzelli Cell : +39-347-2665618