[SR-Users] Configuring Kamailio as an upstream proxy for FreeSwitch and which RTP proxy to choose
fred at palner.com
Mon Feb 24 16:07:23 CET 2014
On Mon Feb 24 10:50:07 CET 2014 Sean Kemball wrote:
> New to Kamailio and FreeSwitch, loosely familiar with SIP mechanics,
> and not a complete network idiot... but please be gentle. :)
> 1. Should the proposed topology, with Kamailio + an RTP proxy
> behind a firewall, relaying to FS on an inside interface, work?
> (Can't see why not)
Yes, you said that your upstream is on the same private network. So it
should be pretty straight forward.
> 2. Does it need a local RTP proxy on the Kamailio box, particularly
> if we turn off the ASA SIP inspect stuff?
If you are all on the same private network, I would let FreeSWITCH
handle the RTP, but you can do this a variety of ways.
> 3. Can you recommend which RTP proxy to use? There seem to be at
> least 3 that work with Kamailio. The box is CentOS 6.5, and it would
> be nice to use known-to-work packages rather than compile from source.
> (But eh, if I haveta).
On your scenario, I'd just use FreeSWITCH for the media proxy. Again,
many different ways to go here.
> 4. Can anyone point me to some docs to explain what ports need to
> be open between the Kamailio box and my upstream proxy/media server?
> I can be more liberal between inside and DMZ I guess.
Your upstream provider would generally tell you which rtp ports they
would want opened.
> 5. Is static NAT in this environment going to bite me, or should
> it be OK?
I've never had an upstream provider communicate with me on private nat.
> 6. Is there any better documentation that we should be using to
> make this easier, or should I just man up and try harder?
Man up. =)
Practive makes perfect.
The Palner Group, Inc.
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