Symptoms

Consider the following scenario:

  • You have some delegates in a Microsoft Lync Server 2013 environment.

  • You configure the Simultaneous Ring feature to ring all delegates when you or one of the delegates receives an incoming call.

  • You or one of the delegates answers an incoming call.

In this scenario, the delegates who do not answer the incoming call unexpectedly receive a missed call notification.

Cause

This issue occurs because Lync Server 2013 incorrectly generates a missed call notification. 

Resolution

To resolve this issue, install the following cumulative update:

2781550 Description of the cumulative update for Lync Server 2013, Core Components: February 2013

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