E1 card for 3640 is available?

I don't know how E1 controller on router works, but now our company will order E1 controller card on 3640 and deploy it to replace the several leased line which to the different sites. Can you lead me the information how the E1 works, and how to configure it? thanks ___

difference between balanced and unbalanced

hello, I found on Cisco web pages, there are two kinds of E1 network module, one is NM-1CE1B=(1-port Channelized E1/ISDN-PRI balanced network module, one is NM-1CE1U=(1-port channelized E1/ISDN-PRI unbalanced network module), Can you let me know what's the difference between balanced one

urgent: How to block ICQ on PIX server

Hello, How can I block the ICQ use on PIX server? I captured the packets ICQ generating, found that port they are using is UDP 4000, and UDP 8000. I used the command "conduit deny udp any eq 4000 any" and command "conduit deny udp any eq 8000 any", but users still can user ICQ software.

How to block ICQ on PIX server

Hello, How can to block ICQ use on PIX? Which port is ICQ using? So I need only block that port, right? Thanks ___ ÍøÒ×[µçÄԽ̳Ì] ÄÚÈݳ¬È« ÏÂÔØ¡¢½âÒÉ¡¢Ñ§Ï°Ó¦Óо¡ÓÐ http://school.163.com ÍøÒ×ÐÂÎÅƵµÀ£¬²»µ«Ð£¬¸üÒªupdat