[asterisk-users] Stepped deployment - T1 PRI passthru

[C F]

Erik here is a rundown of how you could do it:
Using your example of g1 telco, and g2 to old pbx, zapata.conf:
group=1
context=telco
channel=>1-23
group=2
context=pbx
channel=25-47

extensions.conf:
[telco]
;first we define all the local DIDs
exten => 1234,1,Goto(newpbx,${EXTEN},1);send all DIDs that are on the
new system already to newpbx context.

;then we include all the other DIDs
include => oldpbx

[oldpbx]
;we send all unknown DIDs to the old PBX.
exten => _XXXX,1,Dial(Zap/g2/${EXTEN})
exten => _XXXX,n,Busy()

[pbx]
;outbound dialing from oldpbx
exten => define your outbounddialing here.

Hope this helps.


On 3/28/07, Erik Anderson <erikerik at gmail.com> wrote:
> Following the successful deployment of asterisk servers at several of
> our branch offices, in the near future, I'll likely be implmenting an
> asterisk server at our HQ.  We currently have a T1 PRI terminated on a
> legacy PBX.  I'll be doing a stepped deployment in which, via a dual
> T1 linecard, the asterisk server will initially pass all
> incoming/outgoing calls directly through to the PBX.  As the
> deployment progresses, I'll grab individual DIDs and start routing
> them to IP phones instead of passing them through to the old PBX.
>
> I'd imagine that this is a fairly common deployment scenario, but
> after searching through the wiki, was unable to find any dialplan
> "best practices" for implementation.
>
> Would anyone be able to point me in the right direction on this?  I'd
> imagine the initial dialplan config to be something like this:
>
> Zap/g1 = T1 to telco
> Zap/g2 = T1 to PBX
>
> [default]
> exten => _<pattern_matching_our_DIDs>,1,Dial(Zap/g2/${EXTEN})  ;
> routes incoming calls to old PBX
> exten => _<pattern_matching_external_numbers>,1,Dial(Zap/g1/${EXTEN})
> ; routes outgoing calls to telco
>
> That's probably way over-simplified, and I'm sure the final
> implementation would involve a few different contexts for orginization
> and future flexibilty, as well as perhaps needing some code to set CID
> information correctly (I'm not sure if that's passed through
> automatically).
>
> Am I heading down the right path?
>
> Thanks!
> -erik
>
> --
> Erik Anderson
> http://andersonfam.org
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