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Consider the following scenario:

  • You have a telephone that is running Microsoft Lync 2010 Phone Edition.

  • You deploy new updates to the telephone from the update server.

  • You restart the telephone, and then you select a language when you sign in to the telephone.

  • You enable high-contrast mode.

  • You disable high-contrast mode, and then you switch to another language.

  • You try to enable high-contrast mode.

In this scenario, the high-contrast mode is not applied until you repower the telephone.


To resolve this issue, install the following cumulative update:

For Polycom CX500, Polycom CX600 and Polycom CX3000 telephones:

2577594 Description of the cumulative update for Lync 2010 Phone Edition for Polycom CX500, Polycom CX600, and Polycom CX3000: July 2011
For Aastra 6721ip and Aastra 6725ip telephones:

2577595 Description of the cumulative update for Lync 2010 Phone Edition for Aastra 6721ip and Aastra 6725ip: July 2011

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