Thanks Tomi,

Hope that helps OP as well. Regarding your question: "when one should use rtpengine over rtpproxy ?" I believe its a matter of choice when it comes to simpler RTP relaying, but once I started working with WebRTC clients trying to reach Asterisks or FreeSWITCH behind the Kamailio node RTPEngine played well since it has the capability. I'd recommend comparing the functions of both on their respective github pages. Mediaproxy on the other hand doesn't support this Inter-AF bridging at all.

In one particular deployment just like the one discussed over here I tried RTPengine and it worked but client reported distortion and breaks in voice. I tried few things but then reverted to rtpproxy and everything went normal. I switched between the two few times to observe the same issue.  I'm sure I didn't tweak RTPengine, iptables, and OS properly for RTPengine in that case but, just for sake of comparison, replacing with rtpproxy brought things to expected behavior. Similarly a different deployment using RTPengine with WebRTC clients connecting with Asterisks worked 100% perfectly w/o a hiccup.

Regards,
Sammy




On Fri, Jan 26, 2018 at 12:50 PM, Tomi Hakkarainen <tpaivaa@gmail.com> wrote:
Hi,

I have similar setup working.
I followed these guides : 
https://saevolgo.blogspot.fi/2013/08/rtpproxy-revisited-kamailio-40.html

Maybe you can find those also useful, and if you need more help just let us know…

I also wonder when one should use rtpengine over rtpproxy ?

BR,
Tomi

On 26 Jan 2018, at 12.47, Daniel-Constantin Mierla <miconda@gmail.com> wrote:

To clarify and avoid misleading, rtpproxy should be able to do the same as rtpengine for this case

Both modules allow to set the public IP address, by providing it as the second parameter to rtp relay manage function. Also, the applications themselves have parameters to specify the address to advertise.

Cheers,
Daniel

On 25.01.18 11:00, Mark Boyce wrote:
Morning Arsen

Thanks I’ll take a look at that.  Was using RTPProxy just through force of habit :-)

Mark

On 25 Jan 2018, at 09:53, Arsen <arsen.semionov@gmail.com> wrote:

Hi Mark,

You can solve this by using rtpengine module, it can rewrite SDP offer / answer and replace media addresses with correct IPs.





Arsen Semionov

On Thu, Jan 25, 2018 at 11:40 AM, Mark Boyce <mark@darkorigins.com> wrote:
Hi all

I’m trying to create a relatively simple setup with Kamailio dual homed on public/private ip and asterisk on private ip only.  The idea is load balance / fail over asterisk boxes.

Following the real-time tutorial I have clients registering with Kamailio, Kamailio registering on clients behalf with asterisk as well as invites going through.

However what I’m seeing is that when an invite occurs asterisk offers media on its private ip, as it would. However this is making its way through Kamailio all the way to the client.

After a bit of searching all I can find is people trying to get it working and failing, or putting asterisk on public IP.

So questions - am I doing this completely the wrong way? Should Kamailio alter the media ip of asterisk on the way through or do I need to do that by hand?  Surely someone somewhere has a write up on this already :-)

Thanks
Mark

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Dark Origins Ltd
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