DUNDi would be very well suited to this particular application. Publish the extensions that are reachable at each location and when one site dials an extension it gets routed to the one that says "i have this".

ENUM would probably work just as well for this. I like ENUM with PowerDNS and MYSQL.

-Jonathan

Justin Hamade wrote:
I have run into the exact same situation and have the same question. I did it in the dial plan manually due to time contraints but if DUNDi or ENUM or something else is better suited I would love to know.

Also the guides and tutorial that I found did not touch on specifics for a situation like this, if anyone knows of one I would be interested in reading it.

Thanks,
Justin

On 5/1/07, *Erik Anderson* <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote:

    At work, I have 4 branch offices at which I've deployed asterisk.
    Call termination/origination at each branch office is handled either
    through a frac PRI or 3rd party SIP provider.  Soon, I'll be replacing
    the legacy PBX at our HQ with asterisk.

    Each branch office has between 3 and 20 employees, each with their own
    extension and DID, and at headquarters, we have about 70 people, again
    each with their own extensions and DID.

    Handling local and LD calls from all the offices isn't a big deal -
    just normal call routing for that.  My main question is what to do
    with calls between the offices.  Each branch is connected back to HQ
    with a persistant VPN tunnel - I've tested IAX2 traffic over these
    tunnels before, and things work great.  Since this works fairly well,
    I envision using IAX trunks for all intra-office calls.  So - in this
    situation, would it be easier to just manage the office dialplan(s)
    and call routing manually, or would it be worth it to set up dundi for
    extension discovery?

    Thanks!

    --
    Erik Anderson
    http://andersonfam.org
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Justin
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