[Asterisk-Users] Astersik with ISDN up0

[Peter Svensson]

On Tue, 14 Dec 2004, Kumaran Subramanian wrote:

> I would like to know .
>  
> *  Is it possible to build a VoIP system using ISDN up0 telephone lines?

I think you would normally use a NT device to get an S0 interface and 
connect that to the Asterisk box. In Europe the U interfaces are ususally 
not used directly.

I assume that there are NT devicce for Up0 to S0 conenction.

> *  What are the hardware requirements?

For four isdn BRIs you may want to look at the quadbri from junghanns:
  http://www.junghanns.net/asterisk/page17.html

Peter