Symptoms
In a Microsoft Skype for Business Server 2019 environment, you enable anonymous PSTN callers to start static meetings. A PSTN user dials the Conference Auto Attendant (CAA) service number and provides the conference id to join the meeting. However, the PSTN call is placed in a holding pen until a Skype for Business user joins the conference even though the AllowAnonymousPstnActivationForDedicatedMeetings parameter is set to true.
Resolution
To fix this issue, install the July 2019 cumulative update 7.0.2046.123 for Skype for Business Server 2019, Conferencing Attendant.
