Quality of Service for Audio and Video Calls on VVX Phones

When the Quality of Service (QoS) setting is enabled on the Skype for Business server, VVX phones receive the Differentiated Services Code Point (DSCP) value from the server for Quality of Service (QoS) of audio calls placed or received from phones registered to the Skype for Business server.

The Skype for Business server does not provide in-band provisioning for DSCP for QoS of video calls for outbound video streams. When video is enabled on VVX 501 and VVX 601 phones, provision the phones to receive DSCP for QoS of audio calls using the parameter qos.ip.rtp.dscp and for video calls using qos.ip.rtp.video.dscp.

Note: If the parameter lync.provisionDeviceParams.enabled is set to 0 and DSCP is not set in the Web Configuration Utility, the phone marks IP packets with the DSCP value Expedited Forwarding (EF).