[Asterisk-Users] Dynamic Dialplan - Turn VM on/off?

[Rod Bacon]

G'day. I've been working with * for some time now, but mostly from a 
enterprise perspective. I've just setup my own box at home and want to 
enable some more "home user" type functionality.

Does anyone have a trick to allow the dynamic modification of the 
dialplan by users? I want the ability to switch voicemail on/off (or at 
least alter the timeout).

In essence, I want to simulate the act of manually turning an answering 
machine on when you leave home (for my wife).