We are experiencing intermittent dropped calls on 3 phones; (2) 7942s and (1) 7962. The drop calls happen between IP-phone-to-IP-phone and IP-phone-to-voice-gateway. The network consists of 5 Catalyst 4510's, 1 stacked 3750; 1 3845 (voice gateway); a...

I am running CME v4.x on a 2821 with an NM-ESW-16. I plug a 7931 phone into one of the switch ports. The 7931 does not power up. I have shut and no shut the port and tried all other ports. I can get a 7941 to power up. Does anyone have any idea if th...

could anybody give me the list of protocols and ports numbers(udp & tcp) to connect pix firewall and cisco vpn client via ipsec, thanks

We have PIX 506E and Cisco vpn client 4.0. If client was connected right outsie of the PIX everything fine. But client via dial-up, client can authenticate the PIX but cannot access any network behind PIX. Please help, TIA