This Recommendation allows a media gateway controller (MGC) to request a media gateway (MG) to label/tag the content of communication using an H.248 interface. The tag for a particular media flow is termed as content of communication identifier (CCID) as H.248 signalling element. The inclusion of the CCID information in those packets is part of a dedicated encapsulation header.
ITU-T H.248.60-2009 Referenced Document
ITU-T H.248.1-2005 Gateway Control Protocol: Version 3 Study Group 16 Audiovisual Services Systems and Multimedia System Infrastructure - Communications Procedures Study Group 16
ITU-T H.248.60-2009 history
2009ITU-T H.248.60-2009 Gateway control protocol: Identification of content of communication Study Group 16