E1 Cards for Asterisk & 3com NBX system

hello i m looking for E1 cards for asterisk, preferably 4xE1, where do i start looking? And, 3com NBX E1 cards with more than 1 port. Please provide the part numbers too, thank you in advance.

If you buy Diguim cards they come with free installation and configuration support. Check out the TE4XX cards from this page


thanks for th quick reply, however, me being a newbie to VOIP, i m wondering if all these or which cards are compatible with 3com analog NBX.

are the TE4XX digium cards ISDN and 3com NBX 100 compatible?