Topic Last Modified: 2011-01-31

You will need to provision the authentication personal identification number (PIN) for the user on Microsoft Lync 2010 Phone Edition for Polycom CX600 and Microsoft Lync 2010 Phone Edition for Aastra 6725ip. The PIN can be configured by an administrator or set by the user on the Dial-In Conferencing page. An administrator can set the PIN from Microsoft Lync Server 2010 Control Panel or from the Lync Server Management Shell (Set -CSClientPIN).

On the Polycom CX600 IP desk phone and Aastra 6725ip desk phone, do the following:

• Enter the phone number and authentication PIN.
  
  
• Enter the phone number or extension and authentication PIN.
  
  

This allows the phone to discover Microsoft Lync Server 2010, connect, and then authenticate by using the PIN. After authentication, a Lync Server 2010 signed certificate is downloaded to the phone, cached, and then used for subsequent authentication.