I have an ISDN Bri line directly terminated in to my system using the usb port Now i want to make a VPN so i have bought 1721 router with bri port but how should i terminate and what are the things which i have to keep in mind as well as do et me know any link regarding it thanks
do you have ISDN BRI card installed in the router ?
if yes which type of card is installed in your router ? is it normal S/T or U interface ?
If its U interface then you can directly connected the ISDN line onto it or else you need to have a NT1 so that you can connect the output from the box to ur router...