[SR-Users] Simple Trunkig with Kamailio

[Klaus Darilion]

Jared Martin wrote:
> Ok, this is probably an easy question:
> Say I have my kamailio server set up and all of my voip clients are 
> gleefully calling each other... but now I want to connect them to the PSTN.
> 
> Can I set up kamailo to trunk calls using a few grandstream gateways? or 
> is Asterisk neccesary?

If you have a gateway device you can configure Kamailio to forward the 
calls (which are designated to the PSTN) to the gateway. Basically it 
doesn't matter if the gateway is a high end Cisco/Audiocodes gateway, 
medium priced Grandstream gateway, or just an ATA with FXO interface.

> 
> Sorry if the answers out there, but I haven't found anything that 
> answered the question directly.
> I'm a linux admin, but I'm new to PBX's and the like. I've installed 
> kamailio in the past using instructions specific to that situation, but 
> haven't configured trunking (or I didn't recognize thats what it was)
> 
> references to howtos or tutorials would also be greatly appreciated

The idea is rather simple: before doing lookup() you analyze the 
userpart of the request URI. If it is in a certain format, e.g. only 
digits with an optional leading + sign, the instead of doing lookup() 
you just forward the request to the gateway.

regards
klaus

> 
> Thanks for your help,
> Jared Martin
> 
> 
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