1- can you add more that three line appearences on a phone? 2- If I have six phones with two shared lines each, I want to verify that they can only recieve two calls at the same time before going to VM total.

in setting up the cm-fallback ip phone option, there does not appear to be an option for 7912 ip phones. System show options below. To get the system to show 7912, do we need to upgrade something?config-cm-fallback)#limit-dn ? 7910 IP Phone 7910 7...