[asterisk-users] trunk between 2 servers

[Robin Vleij]

On 6/7/11 7:40 PM, Steve Edwards wrote:

Hi!

Agree on the IAX. Had never used it, I was a SIP-Only one man band. Not 
got a VPS in a different location and configured IAX between them. Cool 
thing is it has encryption built-in, in case you don't have both of the 
machine locally.

As a really ugly fail-over setup I just made a new context in my 
extentions.conf for iax-in where I also have all my extentions (like all 
6! :-). In the sip context in the dialplan I added an entry to dial 
extention at other_iax node in case of failure.

So now I get trunked calls in on one of both boxes (you can setup an SRV 
to configure the standby machine) and I'll try the ext locally. If that 
one fails (not registered) it'll send the call over the IAX trunk to the 
other machine. Fails there: voicemail.

Basically there's no end to what you can do this way, like have some 
trunk operators connected to the machine that's closest by and deliver 
the calls there yourself over IAX. IAX can have monitoring and 
encryption, pretty nice stats too. If you managed to setup SIP, IAX is 
easy. I only used Google basically. Just don't forget the two contexts 
to prevent loops. And in my ugly work-around you'll have two places to 
check voicemail, if you would use that.

/Robin

> For my needs (1 man band), I just use IAX. SIP will also do the trick,
> it's just a little bit more complex to set up but should be well within
> your skill set if you already have SIP configured for [in/out]bound on
> your first box.
>
> After you've configured iax.conf correctly, all you need is something like:
>
> exten = *,n,dial(iax2/user:pass at second/exten-in-second-dialplan)
>
> In the 'first' box's dialplan.
>