One of original roles of the mediation server was to transcode between RealTime audio (RTAudio) and G.711 to integrate with standards-based media gateways and PBXs. With Lync Server, calls can be sent using G.711 directly to a supported gateway or PBX. Although low bandwidth signaling (SIP) still traverses the mediation service role, higher bandwidth media (RTP) flows directly from a Lync Server endpoint to the GW/PBX, bypassing the Mediation Server role.
This change provides several benefits, including
• Removes a potential single point of failure that a mediation server introduced
• Reduces the overall server footprint of OCS
• Reduces the number of hops a media stream takes
In addition, in scenarios where a branch appliance is ...