A white screen or a white horizontal line appears on a Polycom telephone that is running Lync Phone Edition

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Symptoms

Assume that you have a Polycom telephone that is running Microsoft Lync Phone Edition. In this situation, you encounter one of the following issues:

The screen of the telephone appears white after you restart.
A white horizontal line appears in the middle of the telephone screen.

Resolution

To resolve the issues, install the following cumulative update:

2737911 Description of the cumulative update for Lync Phone Edition for Polycom CX500, Polycom CX600, and Polycom CX3000 telephones: January 2013The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.