Centralized Call Pilot for 3 connected MICS systems 1

[TnPhoneguy]

What do I need to have a centralized voice mail. I have a MICS w/7.1 and a Call pilot 100. The other 2 MICS systems will be connected with PtoP T1 circuits. Also on the 2 other MICS will the light on their T7316e light up with a message and F981 work?
Thanks

 

[morgans12]

T1/PRI with MCDN (Advance Private Networking) Keycode on all of the MICS. Config as SL-1. Yes the light will work but the down side is the remote sites will not have the voice mail soft keys. Everything is done via DTMF commands. The is also no F980,981,982 ect. The remotes get auto dial keys to connect to the host VM site.