[Asterisk-Users] Channelized E1 - help !

[Asterisk]

If I have a euroisdn pri E1 line from my telco (BT), can I use a cisco 3620
router (with 1 Channelized E1/PRI port) to connect to the E1 line, and
connect * to the same lan as the router ?

I suppose what I'm really asking is "what is a 1 Channelized E1/PRI port"
and can it connect to a E1 line. I have gathered from the web/wiki that the
cisco works with *.

Julian