Article ID: 2517732 - View products that this article applies to.
Consider the following scenario:
To resolve this issue, install the following cumulative update.
For Aastra 6721ip and Aastra 6725ip telephones:
(https://support.microsoft.com/kb/2529978/ )Description of the cumulative update for Lync 2010 Phone Edition for Aastra 6721ip and Aastra 6725ip: April 2011
For Polycom CX500, Polycom CX600 and Polycom CX3000 telephones:
(https://support.microsoft.com/kb/2529977/ )Description of the cumulative update for Lync 2010 Phone Edition for Polycom CX500, Polycom CX600 and Polycom CX3000: April 2011
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about how to configuring Common Area Phones, visit the following Microsoft TechNet website:
How to configure common area phones
Article ID: 2517732 - Last Review: April 4, 2011 - Revision: 1.0