Call button is unavailable (dimmed) for a meeting organizer in Lync 2013 (Skype for Business)

Symptoms
In a Lync Server 2013 (Skype for Business) environment, you set the AllowIPAudio parameter toTRUE in the conference policy settings. When you invite a third user to a PC-to-PC only instant message (IM) conversation, the peer-to-peer session is promoted to a conference. In this scenario, the meeting organizer can't make an audio call to attendees. Here's the screen shot for the unavailable Call button:


A snapshot for the missing Call buttom in Skype for Business.jpg
Resolution
To fix this issue, install the November 10, 2015, security update (KB3101496) for Lync 2013 (Skype for Business).

Note Lync 2013 was upgraded to Skype for Business in April 2015.
Workaround
To work around this issue, use one of the following methods:
  • Set the AllowIPVideo parameter to TRUE on the organizer's conference policy.
  • Enable Enterprise Voice for organizers.
  • Rejoin the meeting for the conference organizer in Lync 2013 (Skype for Business).
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.
Properties

Article ID: 3085633 - Last Review: 11/10/2015 19:39:00 - Revision: 1.0

Microsoft Lync Server 2013, Skype for Business

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