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Microsoft® Lync® Server 2013 Unleashed Second Edition by Randy Wintle, Alex Lewis, David Ross, Tom Pacyk

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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 like shown in Figure 17.11. This scenario is typical for migrations from a legacy PBX in which a period of coexistence is required while users become accustomed to the new Lync endpoints. Users have the choice of which system to use when placing or receiving calls through the use of simultaneous ringing. As the users grow more familiar Lync, they will rely less and less on the legacy phone until it becomes unnecessary and can be removed. As the migration ends and legacy devices are retired, the organization actually ends in the pure Enterprise Voice state. Although the idea of simultaneous ringing ...

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