Hello,We are trying to figure this one out. We hooked up 4 ISDN lines to our Cisco 3640 router and when we try to make an analog call or even try dialing the number with a phone to hear what happens, we get a busy signal. We set up all the required p...

Hello,We are encountering a problem that we can't figure out. Currently we have people out in the field that connect to our VPN Concentrator 3005 with the Cisco VPN client 3.5 over a AT&T dial-up. No problems whatsoever. When we have our Earthlink su...