The idea is you modify the Enterprise Parameter Cisco Support Use 1 and add the value CSCsb42763.
While the KB is focused on 4x, this fix has been viable for 5x/6x/7x. My understanding is that this feature existed at one time and then was removed from the code. Customers complained, and a workaround was created. Sort of an easter egg? There is a good thread and discussion from Rob Huffman on this here:
Bill is correct that is the code you put in the service parameter field. I opened a TAC case on this a while ago and it matches with what I have. It does work with 7.x as I am on 7.1.3. The nice thing is, after you put that in there another input box shows up in case you ever need to add another one in the future. When I was on version 4 that was not the case.
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...