Topic Last Modified: 2010-12-20

To support the features of the Enterprise Voice workload and dial-in conferencing, you must deploy at least one Mediation Server. Each Mediation Server must be configured as an intermediary between your internal Lync Server VoIP infrastructure and at least one gateway peer (a PSTN gateway, an IP-PBX, or a Session Border Controller for an Internet Telephony Service Provider to which you connect by configuring a SIP Trunk) that you define in your topology.

Although there are no restrictions regarding the order in which you define Mediation Servers and gateway peers in your topology, the topics in this section describe how to define a gateway peer and then deploy a stand-alone Mediation Server pool that translates signaling and, in some configurations, media to and from that gateway peer.

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