[Asterisk-Users] asterisk and pstn

[Martin List-Petersen]

On ons, 2004-11-24 at 16:51, Philipp Ebneter wrote:
> Hi,
> 
> I'm pretty new to asterisk myself and we haven't gotten the system 
> running yet, but this is what I found out so far about ISDN and PRI (I'm 
> really new to phone technics, so I hope I'm not telling rubbish here):
> 
> - There are ISDN Cards that support BRI-interfaces (Basic Rate ISDN) (2 
> simultanous calls per line) with up to 4 lines. e.g. AVM C4
> - From Digium and other manufactures you can find 1-4 line PRI (Primary 
> Rate ISDN) cards (each line supporting 24/30 simultanous calls, 
> depending whether you are in europe or america) e.g. TE405P
> 
> I think the prices for those two types are about the same (execpt that 
> the telecom provider will charge a lot mor for the PRI-Connection).

That really depends:

BRI cards vary from 25 EUR for single port (2 channels) to 600 EUR for 4
port (8 channels) and there exist cards with up to 8 ports (16 channels)
for BRI.

PRI cards vary from about 600 EUR (1 PRI/30 channels) to about 1500 EUR
(4 PRI/120 channels voice).

If you want cards, that are active (dsp's that can handle fax in
hardware etc.) the price is higher.

When talking line rental BRI vs. PRI you get a PRI usually at the
monthly rental of 10 BRIs, depending on your agreement with the telco
etc., meaning you don't pay line rental for the last 10 channels. (this
is a thumb rule and based on my experience in several european
countries).

Kind regards,
Martin List-Petersen
Dublin, Eire
(contact info ==> http://www.marlow.dk)