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You hear an error message when you dial your work telephone extension or your full telephone number to enter an Office Communications Server 2007 R2 conference: "The phone number and PIN you have entered do not match"
Article ID: 972715 - View products that this article applies to.
You enter a Microsoft Office Communications Server 2007 R2 conference by using the Conferencing Auto-Attendant service. If you use your work telephone extension or you use your full telephone number to identify yourself as a leader or an authenticated user, you hear the following error message:
The phone number and PIN you have entered do not match
This problem occurs when your work telephone extension or your full telephone number is not unique within your organization.
To resolve this issue, apply the following update:
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/969822/ )Description of the update package for Office Communications Server 2007 R2, Conferencing Attendant: July 2009
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.