Conference call dropped after 28 or 56 minutes joining from Cisco phone in Skype for Business Server

Applies to: Skype for Business Server 2015Skype for Business Server 2019


In Microsoft Skype for Business Server 2019 or Skype for Business Server 2015, when you have a conference call with a user who joins the call by using a Cisco phone, the call will be unexpectedly disconnected after 28 or 56 minutes.


To fix this issue, install one of the following updates:

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