I'm not sure what you can get there.In North America ISDN never really took hold . Here we have a 4 port trunk card that mounts on the main motherboard.And if there is an expansion kit we can install 2X4 trunk cards with 2 trunk ports and either 4 digital or analog extensions .So your cards there are a little different.Do you have the European manual it should show what's available or I'm sure someone on the board here in Europe will help you out.

Are your sure it's a compact or is it a Compact 2?

Last edited by pvj; 03/18/16 04:15 PM.