[asterisk-users] Re: New T1 Asterisk installation

[Eric "ManxPower" Wieling]

Stephen Bosch wrote:
> 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)

T-1s do not have to be PRI.  In fact many of them are not.  You can have 
a T-1 with a mix of signaling methods, FXO, FXS, E&M, E&M/Wink, loop 
start, ground start, etc.