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Microsoft® Lync Server 2010 Unleashed by Tom Pacyk, Andrew Abbate, Alex Lewis

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Survivable Branch Appliances

Although not necessarily a feature of Lync Server itself, a concept that is now possible via Lync Server is that of a Survivable Branch Appliance (SBA). Several vendors have announced appliances that run Lync Server. These appliances allow for simplified implementation of dial plans and offer localized services with the capability for a centralized data center to take over in the case of a localized failure of the appliance. The appliances integrate a PSTN gateway, Mediation Server, and Registrar. Built in various formats by companies like Audiocodes, Dialogic, Ferrari, HP, and NET, these devices provide many services such as the capability to hand control of local calls back and forth between the appliance and a ...

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