Redundant WAN
The first option is still to leverage redundant WAN connections between a branch site and a datacenter. In this model a media gateway and Mediation server typically are deployed in the branch, and users are homed to a Front End pool that exists in another site, as shown in Figure 32.4. This enables the Mediation Server to locally communicate with the gateway and use RTAudio when interfacing to other Lync servers across the WAN connection.
Figure 32.4. Offices with redundant WAN connectivity.
Although it is technically possible to not locate a Mediation server in the branch, the local gateway would have to send a G.711 audio stream ...
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