I have a Cisco 2811 Router and have installed a VIC2-4FXO but the command voice-port 0/0/0 is not comming up. Now I have dones some research and it looks like I also need to install PVDM2-8 module.
1) Can someone confirm that I need this module?
2) What does this module do?
3) whats the difference between PVDM and PVDM2
4) Whats the difference between PVDM2-8 and PVDM2-64 (which one do I need for 4FXO ports and 24 phones)
5) The installation in the router, do they need to be installed in pairs, individually
6) If install PVDM2-8, can I install a PVDM2-64 in the second slot later (Do they need to be the same)