Devices that are qualified to display the Optimized for Microsoft Office Communicator wordmark are regularly tested and verified for performance as new upgrades and major releases of Communicator are developed.
This document contains a list of products that:

• Were previously tested and verified for performance with a previous, major release or upgrade of Microsoft Office Communicator and are still qualified for that release or upgrade.
• Are no longer being actively distributed by the partner.
• Are no longer tested and verified for performance with the current release or upgrade of Microsoft Office Communicator.

Download : Unified Communications Retired Devices Optimized for Microsoft Office Communicator:
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=9852117a-103a-4ecb-a045-bfe4c93f75b7