An MWI is a lamp, flashing LCD panel, or special dial tone on subscriber phones that lets subscribers know a voice message is waiting. The type of indicator depends on the phone system and the phones that subscribers use.
MWIs are not the same as message notification, which is the feature that notifies a subscriber of new voice messages by calling a phone or pager, or by sending an e-mail message.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...