This update for Microsoft Lync Phone Edition devices adds support for the SHA-2 suite of digest hash and signing algorithms for connections from clients. The SHA-2 protocol uses digest lengths of 224, 256, 384, or 512 bits. After you apply this update, Lync Phone Edition devices can be connected to a Microsoft Lync server that contains a certificate that is issued from the same Certification Authority (CA).
How to apply this update
To add this functionality, apply one of the following cumulative updates, as appropriate for the telephone that you use:
Microsoft Lync 2010 Phone Edition, Microsoft Lync 2010 Phone Edition for Aastra 6721ip and Aastra 6725ip, Microsoft Lync 2010 Phone Edition for HP 4110 and HP 4120, Microsoft Lync 2010 Phone Edition for Polycom CX500, Polycom CX600 and Polycom CX3000, Microsoft Lync 2010 Phone Edition for Polycom CX700 and LG-Nortel IP Phone 8540