Sending Mwi in different extension other then voice mail

During my various implementation project i came across a common requirement which is having a common voice mail box to a group of users
and the requirement is that they get a visual mwi indication to there extension when a call came to the common voice mailbox.

How to acheive this ????


Now to start with lets say your common voice mail box number is 1000 and you want the indication on the extension 2001,2002  etc

for enabling this go the the common mail box user setting in unity and navigate to Edit > Message waiting indicator

Add a new message waiting indicator  and mention the extension 2001 and 2002 etc

This will acheive the message indication when a  message got left in the common voice mail box ..