/mcpCustom UDP Port Ranges for Audio and Video You can configure separate UDP port ranges for the audio stream and video stream of a SIP call. Because video typically requires considerably more bandwidth than audio, creating dedicated port ranges for each media type simplifies network bandwidth management. It also protects against audio stream degradation by guaranteeing that the audio stream will have a dedicated channel that is separate from the higher-bandwidth video stream. You can apply this configuration by setting the Media Port Ranges field in the SIP profile to Separate Port Ranges for Audio and Video. You can then apply the configuration to a phone by associating the SIP profile to a phone. Traffic Class Label The Flexible DSCP and Video Promotion feature uses the Traffic Class Label (TCL) to instruct the SIP endpoint dynamically to mark its DSCP on a per call basis, based on the Video Promotion policy that you configure. Because TCL is a SIP Session Description Protocol (SDP) attribute that is defined per media line, the TCL and its associated DSCP markings can be different for the audio media line and the video media line of a video call. You can choose different DSCP markings for the audio stream and the video stream of the video call. DSCP Settings Configuration Task Flow Perform the following tasks to configure DSCP values and a video promotion policy for your network. Procedure Purpose Command or Action Configure a video promotion policy to handle the different types of video. Configure Flexible DSCP Marking and Video Promotion Policy, on page 773 Step 1 If your company has users that require higher priority than other users in your company, Configure Custom QoS Policy for Users, on page 775 Step 2 configure a SIP Profile that includes custom DSCP values for audio and video streams. For example, if your company has a telephone sales force or CEO whom require higher priority, you can apply the customized SIP profile to those users' phones. Configure Flexible DSCP Marking and Video Promotion Policy Follow these steps to configure a video promotion policy to handle the different types of video. Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 773 Advanced Call Processing Traffic Class Label