[cisco-voip] Unity recall after bad extension?

[James Williams]

Out of the box, if you dial an extension that doesn't exist from a Unity
call handler, it'll say the extension doesn't exist and will go to the
default Unity greeting ("Hello, Cisco Unity messaging system. From a
touch-tone telephone..."). I need to change this on a per-DNIS basis so
people calling one department go back to the call handler for that
department; how would you suggest making this happen?

Thanks in advance,

-James