[SR-Users] Connecting UAs behind Firewall/CgNat with Kamailio without using a Stun Server

[Daniel-Constantin Mierla]

Hello,

just to add the link to the video of the presentation on this topic done
by Olle at the Kamailio World Conference 2017:

  - https://www.youtube.com/watch?v=50TFZWlhsP4

Cheers,
Daniel

On 08.05.18 08:40, Markus Monka wrote:
> Hi Gerd,
>
> have you seen Olle's Project from 2017 about RadioBroadcasting?
>
> https://www.kamailio.org/w/2017/11/oss-iris-broadcast-project-launched/
>
> Best Regards
>  Markus
>
>
> On Tue, May 8, 2018 at 8:29 AM, Pinter, Gerd. <G.Pinter at radionrw.de
> <mailto:G.Pinter at radionrw.de>> wrote:
>
>     Hello Henning, hello Community
>
>     we are using high quality Codecs with bitrates up to 1500Kbit
>     (PCM), but usually 128kbit (Mpeg1 Layer3 or AAC-LD). 128 is Not
>     too much, but I want to be on the save side and therefore I prefer
>     solution without Proxy.
>     By the way I am audio engineer at a german commercial radio
>     broadcast network and we try to establish our own "ISDN
>     replacement-SIP Network" for reporting from events like Soccer
>     Games, Karneval, Rock Concerts, Political Party Summits,
>     Lawsuits...  whatever. I want to keep frontend as simple as it
>     gets for the reporter.
>     Anyway, people told me that the SIP Server of "Mayah
>     Communications" is working without the need of stun or other
>     Client side gadgets, but I am also told that this Mayah server
>     works without Proxy functions. That Company won't tell me their
>     settings of course, but if possible I'd like to have this feature
>     for our SIP Server. At the moment I have still vast problems with
>     connectivity from Devices that are logged on via Vodafone Mobile
>     Network. Even Stun does not work. I guess that CGNAT of Vodafone
>     (All of the Devices I have tested within Vodafone allocate IP
>     Addresses in private range!) opens different Ports for different
>     outbound connections which is the case if I use a 3rd party Stun
>     Server. I have read a lot about this issue these days and there is
>     solution, but I am not too deep into scripting an how to edit the
>     kamailio.cfg. For example, I tried to start Kamailio with Stun,
>     but if I tried to use the built in Stun, I've got error messages
>     on the Client and also in the logfile of the SIP Server
>     (incomplete header of Stun message) Anyone can help, please?
>
>     Best regards Gerd
>
>
>     Von: Henning Westerholt <hw at kamailio.org <mailto:hw at kamailio.org>>
>     Gesendet: Montag, 7. Mai 2018 20:56
>     An: sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.org>
>     Cc: Pinter, Gerd. <G.Pinter at radionrw.de <mailto:G.Pinter at radionrw.de>>
>     Betreff: Re: [SR-Users] Connecting UAs behind Firewall/CgNat with
>     Kamailio without using a Stun Server
>
>     Am Montag, 7. Mai 2018, 13:11:50 CEST schrieb Pinter, Gerd.:
>     > Hi
>     > Won't RTP Proxy cause al lot of traffic? We only have 155mbit
>     for all IT
>     > traffic, and our Sip Server also have to manage connections
>     outbound our
>     > house, where I thought it might be better let those clients do
>     the payload
>     > by peer to peer connection. If I got it right this traffic would
>     flow thru
>     > our Sip server with RTP Proxy enabled.
>     > Thanks a lot
>      
>     Hello Gerd,
>      
>     you understood it correctly, indeed using rtpengine/rtpproxy would
>     mean routing additionally your RTP traffic to your network.
>     Depending on the number of sessions and the used codec it may work
>     perfectly, only with some QoS tuning or not at all. You can
>     estimate the bandwith, there are also some calculators online.
>      
>     Best regards,
>      
>     Henning Westerholt
>      
>      
>
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>
>
>
> -- 
> Dipl. Ing.
> Markus Monka - mmonka at sipgate.de <mailto:mmonka at sipgate.de>
> Telefon: +49 (0)211-63 55 55-23
> Telefax: +49 (0)211-63 55 55-22
>
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-- 
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com

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