I believe that if you hace cisco unity or unity express you shoudl be able to configure such the MWI on the handset turn on when there are message(s). Or you can configure a button on the pone for a very fast check.
In Unity, pull up the subscriber for the generic mailbox that you have setup, go to the Messages tab and add an the extension(s) of the phone(s) you want to get the MWI when their's VM in the generic box. Or you can setup one of the other lines on the 7960 to be the extension of the common VM box and then you'll get the indicator on that line (but not the MWI) when there is voice mail. Just make sure you have that line setup to forward all calls to VM so it doesn't ring if you don't want incoming calls to be answered. You only get the MWI light on the primary line of a phone unless you setup the subscriber to light the MWI for other lines.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.