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

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Enterprise Voice with Legacy Phone

In this scenario, end users have full Enterprise Voice functionality, but also retain a legacy PBX phone on their desks. This scenario is typical for migrations from a legacy PBX where a period of coexistence is required while users become accustomed to the new Lync Server endpoints. Users have the choice of which system to use when placing or receiving calls through the use of simultaneous ringing. As they grow more familiar with the Lync Server tools, they rely less on the legacy phone until it becomes unnecessary and can be removed. As the migration ends and legacy devices retired, the organization actually ends in the pure Enterprise Voice state.

Most implementations require a user to have two extensions ...

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