This Recommendation supports the deployment of general Multimedia services by providing a technical definition of several IP-based signalling interfaces that leverage core QoS and policy management capabilities native to CableModems. Multimedia services are defined as IP-based services (e.g., online gaming, videoconferencing, streaming media, etc.) requiring QoS-based network resources (as contrasted with services such as web browsing, e-mail, instant messaging and file-sharing that are commonly provided using best-effort flows). While telephony or voice-based services are not specifically excluded from this definition, the IPCablecom-T set of Recommendations provides coverage specific to this type of service delivery and, therefore, those Recommendations should be consulted as appropriate.