DSCP Marking for MSRP and Media Over TCP

The Oracle Communications Session Border Controller supports Differentiated Services Code Point (DSCP) marking of MSRP and Media over TCP traffic. This feature may be used for MSRP traffic in both B2BUA and non-B2BUA modes.

In order to configure the Oracle Communications Session Border Controller to mark MSRP or media over TCP packets with a value in the IP header's DSCP field, create a media-manager, media-policy, tos-settings configuration element and set the media-type parameter to message. This has the effect of marking all traffic described by prior SDP with m=message with this DSCP value.

Note that setting media-type to message can potentially mark a large range of traffic. For other common traffic to remain marked differently than marked MSRP, you need to create additional tos-settings configuration elements with valid media-sub-type configurations. The following values may be provisioned in the media-sub-type parameter to mark these other types of traffic differently (with an accompanying tos-value).