This document talks about how to find the unusedcoice mailboxesin Cisco Unity and Cisco Unity Connection.
With Unity, you can use the Subscriber Information Dump. When you run the report, there are a number of variables you can view for selected mailboxes. Two of those which are useful are 1) whether a user has initialized a mailbox or not and 2) the user's last login time. The combination of these two will help in determining which mailboxes are configured but unused.
Cisco Unity Connection
Connection User Data Dump (CUDD) Tool :The Connection User Data Dump (CUDD) is a Windows-based remote database administration tool available at http://www.ciscounitytools.com/Applications/CxN/UserDataDump/UserDataDump.html. CUDD allows you to export specific information about users to a file that can be viewed or imported into another application, such as a database utility or Microsoft Excel. When the data is exported, the tool automatically creates a header row that lists the data type found in each column of the output, for ease of import into other programs.
You can find the unused mailboxes at Tools > Reports > Unused Voice Mail Accounts Report
How to disable the voicemail prompt that is played when a call enters a user voicemail?
In order to disable it , make two changes under VM profile:-
1.)Put check mark for "Set subscriber for self-enrollment at next login" under "Profile" section.
2.)Put check mark for "Do not play the "Record your message at the tone" prompt" under "Greetings" section.
This will disable the auto message and will allow user to record his/her greeting message.