[Asterisk-Users] RE: Ordering a Voice PRI for Asterisk

[Peter Svensson]

On Tue, 1 Mar 2005, Jason Kawakami wrote:

> -----Original Message-----
> 
>> <snip>
>> Question is this, there seem to be MANY options technically when ordering 
>> this PRI (in the US) but since this is the first time ordering a voice
>> circuit I am clueless as to what options we need.
>> 
>> Any clues would be helpful or maybe something has already been written about
>> this?
> 
> -If you order an "NI2" PRI you will be fine.  That will give you name and
> number, DID etc.  if they want more than that, ESF,B8ZS, NI2, all b-channels
> 2-way DID.

There are a lot of other important options you need to get right:

 * number of digits sent for incoming Called Party Number / expected for 
   outgoing Calling Party Number

 * expected Type Of Number (TON) for outgoing calls. Same for national /
   international calls.

 * B channel hunting order (use the opposite of what the pstn switch 
   uses in Asterisk).

 * dialtone on empty SETUP (you may as well get this if it is 
   available and free)

 * enabled callerid, if availalbe and worth the cost.

And there are lots and lots of other options. Usually it is a lot cheaper 
to have options set during the provisioning phase than at a later date.

Peter