Refresh Message Waiting Indicator
The MWI is a light indicator on a Cisco IP phone to notify the phone user that a voice-mail message is pending.
Occasionally, the MWI setting for a telephone can be out of synchronization with the user's message status in the voice-mail database. For example, a user could have pending messages, but the MWI would not be turned on. You can refresh the MWI light so that the light reflects the current message status in the voice-mail database.
Use this procedure to refresh the Message Waiting Indication (MWI) extension for a single mailbox or for all mailboxes. The MWI is a light indicator on a Cisco IP phone to notify the phone user that a voice-mail message is pending.
Choose Voice Mail > Message Waiting Indicators > Refresh.
To refresh one mailbox, check the box next to mailbox owner's user or group ID and click Refresh Selected.
To refresh all mailboxes, click Refresh All.