Hi Andreas, I've tried with TLS (using TCP port 5061) with no RTP encryption and with SRTP, but I don't know what minimum encryption means.
Regards, Ricardo -----Mensaje original----- De: sr-users-boun...@lists.sip-router.org en nombre de andreas kaschner Enviado el: jue 30/06/2011 22:04 Para: SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - UsersMailingList Asunto: Re: [SR-Users] Internet RTP filters hi, have you tried TLS with Minimum encryption? regards Andreas On 30. juni 2011, at 19:43, "Dominguez Jover, Ricardo" <djo...@umh.es> wrote: > Hi everybody, > > First to say sorry if this is not the right list to send this post, anyway we > hope somebody can help us. > > We have Kamalio 3.1.3 working since many time ago. We use an RTP Proxy for > NAT issues in the server side and STUN for NAT issues in the internet client > side. Calls in Spain are working fine. > > This month one of our users has gone to Rwanda (our University has created a > Hospital and a School in a region called Nemba). They are using an internet > connection by satellite, with a low bandwith (128kb down, 16 up). > > In some countries we have trouble with internet calls. SIP signaling works > fine, the call rings and is stablished, but there is a problem with RTP > streams: > > - RTP streams sent by RTP proxy to client in internet never arrives to the > client in the internet (although they RTP is sent to the right IP and port) > - RTP streams sent by client in the internet never arrives to RTP proxy > (although RTP is sent to the right IP and port) > > As I said this happens sometimes, and it's happening in Rwanda. We usually > solve this problem making a VPN connection to the University, then the RTP > stream works fine. > > However when our Rwanda's users connect to VPN, the Bandwith goes down (45 > kbps down and 8kbps up), so they can hear as perfectly, but we can't hear > them. > > Does anyone know if T companies are filtering RTP traffic? I've tried to > change ports in RPT Proxy with no result. > > How could we solve this? > > Thanks in advance and best regards, > > Ricardo Dominguez > Universidad Miguel Hernández de Elche > > > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
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