if you are using 4 digit dialing then do this;
Create a new CTI RP
on the DN do one that is either *XXXX or #XXXX (not sure if you are using the * or # currently, so choose one that is not being used)
in the forward ALL call's box, check the box that says go to voicemail.
what this will do for you is, when ever someone presses * or # and then the 4 digit ext, it will forward them to their voicemail box.
Now if you just want a random ext to go to VM (like an auto attendant) then you need to go in and set up a random ext (1234 should work) on the CTI RP. Forward all calls to voicemail like above, but this time go into Unity and set up a Call Handler or Subscriber that will be taking the calls.
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Dallas, Texas
Telecommunications Tech
CCVP, CCNA, Net+
CCNP in the works