Mediation Server
The Mediation Server is a server role necessary to bridge the PSTN traffic to and from the media gateway to the Office Communications Server network. Because some existing media gateways do not currently support the SIP protocol over TCP and optimized media codecs used by Office Communications Server 2007, the Mediation Server is needed to translate the RTAudio and RTVideo codecs to the G.711 codec commonly used by media gateways. In addition to performing codec translation, the Mediation Server performs reverse number lookups (RNL) to resolve phone numbers from incoming calls arriving from the media gateway to the corresponding SIP URI. After phone numbers are resolved into SIP URIs, the Mediation Server routes the call to the ...
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