ABSTRACT
This chapter (RFC 6230) describes the multimedia conferencing functional entities that can be distributed physically without being co-located even though the conferencing system is logically centralized. In this context, Media Control Channel Framework (CFW) or, using a simplified term, “Control Framework” (CFW) (RFC 6230), which uses SIP protocol, facilitates application deployment where the application programming logic and media processing are distributed. This implies that application programming logic can seamlessly gain access to appropriate resources that are not co-located on the same physical network entity. The framework uses the session initiation protocol (SIP) to establish an application-level control mechanism between SIP foci conference Application Servers and associated external servers such as Media Servers. MCW can be used in a wide variety of systems, including the conferencing described here.
