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Multimedia Resource Function Control

Conferencing within the IMS (IP Multimedia Subsystem) will be coordinated by the S-CSCF (Serving - Call Session Control Function), in conjunction with an AS (Application Server). The mixing of the various conference participants? media streams is then performed by the MRF (Media Resource Function) which comprises of the MRFC (Media Resource Function Controller) and the MRFP (Media Resource Function Processor. These are very similar in function to a MGCF (Media Gateway Control Function) and a MGW (Media Gateway) using H.248/MEGACO in order to establish suitable IP and, if required, SS7 bearers to support the mixed media streams.

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