I required the information, can we configure Router Serial interface into Dialer. If it's possible, what type of WAN links and cables are required.Pls help me in this issue.

i had a cisco 3845 router,it is central router. i was took a isdn pri E1 line, it was the backup of leased line E1.i had connected 30 branches(cisco-1841) via ch-E1 64Kbps speed backup of isdn bri.how to configure my central and branch router isdn li...

i was upgrade my pix 6.3 into 7.0,but here one problem was accured, my internal clients are not accessed to my servers.but it accessed to enter the ip address in the URL. pls give me a suggesion.