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119591 How to obtain Microsoft support files from online services
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How to install the update
There are no prerequisites for installing this cumulative update.
You may have to restart the computer after you apply this cumulative update.
Update replacement information
This cumulative update replaces the December 2015 cumulative update for Lync Phone Edition for Polycom CX500, Polycom CX600, and Polycom CX3000 telephones.
To use one of the cumulative updates in this package, you don't have to make any changes to the registry.
Improvements and fixes in this update
This cumulative update adds multiple emergency support and resolves the following issue:
Additionally, the cumulative update resolves the Lync Phone Edition for Polycom CX500, Polycom CX600, and Polycom CX3000 telephones issues that are described in the following Microsoft Knowledge Base articles: