[asterisk-users] Re: New T1 Asterisk installation

Stephen Bosch posting at vodacomm.ca
Mon Apr 16 11:36:59 MST 2007

Steve Edwards wrote:
> On Mon, 16 Apr 2007, David Cook wrote:
>> Remember, you don't need to activate all 23 lines so if you just need 15
>> then you can activate only that number. You also can have potentially
>> hundreds of numbers that terminate on this group of lines. This makes
>> some of your coding a little different because you no longer make an
>> association between which port(s) ring and what number the caller
>> dialed to get here.
>> This is called DNIS (Dialed Number Identification System) (people don't
>> flame me for the ANI/DNIS thing OK? Not relevant for this discussion).
> Not a flame :)
> I think you are referring to DNIS vs DNID.
> DNIS (Dialed Number Identification Service) is the number the caller
> dialed. ANI (Automatic Number Identification) is the number the caller
> called from.
> PRI can also deliver ANI2 (aka Info Digits) which can (if the ANI
> provider configured it) tell you what type of service the ANI came from
> -- hospital, hotel, prison, cell, etc.
> I've never gotten ANI2 working, so if you have, please enlighten me :)
> IMNSHO, PRI beats the !@#$ out of any other T1 flavor.

(Is there another T1 flavour? I thought PRI was it :) BRI isn't T1 anymore)

There are some parts of the world where you can't get partial PRI
anymore, and there's an ugly unserved gap in between analog lines and a
full PRI :(

$650 minimum for a full PRI around here. You need 17 lines before that
makes financial sense.


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