PRI ISDN

[jazaya]

can anyone explain differences between ISDN PRI,PRA,BRI&BRA please.
I am confused.

Experience it, there is no substitute.
RemoveThisJazayeri@kiasagroup.com

 

[BAsh12]

Pri up to 30 channels (UK) with a 64k D-Channel. Bri 2 channels, and one 16k D-Channel. BRA and PRA? No idea unless its country specific.

 

[sramelyk]

In the USA, a PRI has 23 'B' or BODY (64k)channels, and 1 'D' or DIRECTOR (64k)channel.. But certain providers will offer different rate packages.. These could include a diffrent increment in 'B' channels than 24.. For example, you could just get 16 'B' channels with 1 'D' channel.. The only thing that absolutly remains constant is the presence of at least 1 'D' channel..

Matter of fact, certain providers offer an integrated product that would actually put dedicated internet service on the remaining channels.

 

[chris13]

I think PRA means Primary Rate Access, some kind of Software to use and configure PRI in your pbx/machine.
the same with BRA...

 

[ISDNman]

PRI = Primary rate interface = PRA = Primary rate access

BRI = basic...

The terms BRA is used in portions of Europe (maybe UK). Never heard PRA but clearly its the equivalent 30 B +D

BRI is also called "S0" (ess zero) PRI called S2M in europe

 

[senk1s]

it refers to access and interface , interface being the technical term and access refering to that service provider by a CO to a customer