- You deploy at least 3 front-end servers in a Microsoft Lync Server 2013 Enterprise Edition pool.
- You configure dial-in conferencing in the Lync Server 2013 environment.
- You apply the January 2014 cumulative update for Lync Server 2013.
- A public switched telephone network (PSTN) user tries to dial in to a Lync conference that is created in the environment.
Article ID: 2979931 - Last Review: 7 Aug 2014 - Revision: 1