Topic Last Modified: 2010-11-09

To enable Quality of Service (QoS) on a Microsoft Lync 2010 Phone Edition device, you must edit the VoiceDiffServTag and Voice8021p settings on the device By default, VoiceDiffServTag is set to 40, and Voice8021p is set to 0.

To enable QoS on Lync Phone Edition

  1. Log on to the computer as a member of the Administrators group.

  2. Start the Lync Server Management Shell: Click Start, click All Programs, click Microsoft Lync Server 2010, and then click Lync Server Management Shell.

  3. At a command prompt, type the following command, and then press Enter:

    Copy Code 
    Set-CsUcPhoneConfiguration -VoiceDiffServTag <value> -Voice8021p <value>

You will need to restart the device for the changes to take effect.