[SR-Users] Kamailio with asterisk on private lan

[Wilkins, Steve]

Hi Tomi,

I have noticed that applications such as rtpproxy seem to have instructions for Debian type systems, however, I have found that some applications, like rtpengine, do not play as well with Centos; have you had this same experience?  Also, if video is involved, I understood that these proxies are of no benefit.  I don’t know this true or not so please correct me if I am mistaken.

Thank you,
-Steve

From: sr-users [mailto:sr-users-bounces at lists.kamailio.org] On Behalf Of Tomi Hakkarainen
Sent: Friday, January 26, 2018 12:50 PM
To: Mark Boyce <mark at darkorigins.com>
Cc: Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
Subject: Re: [SR-Users] Kamailio with asterisk on private lan

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 at gmail.com<mailto:miconda at 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 at gmail.com<mailto:arsen.semionov at 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.

 https://kamailio.org/docs/modules/5.0.x/modules/rtpengine.html#rtpengine.f.rtpengine_offer




Arsen Semionov
www.eurolan.info<http://www.eurolan.info/>
cell: +442035198881

On Thu, Jan 25, 2018 at 11:40 AM, Mark Boyce <mark at darkorigins.com<mailto:mark at 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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