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APPLIES TO: 
2015
2019
Subscription Edition
Summary: Learn how to use Control Panel or Management Shell to enable or disable dial-in conferencing in Skype for Business Server.
You can enable dial-in conferencing by using Skype for Business Server Control Panel or by using Skype for Business Server Management Shell.
Enable or disable dial-in conferencing by using Skype for Business Server Control Panel
From a user account that is assigned to the CsUserAdministrator role or the CsAdministrator role, log on to any computer in your internal deployment.
Open Skype for Business Server Control Panel.
In the left navigation bar, click Conferencing, and then click Conferencing Policy.
In the list of conferencing policies, select the policy for which you want to enable dial-in conferencing, click Edit, and then click Show details.
To allow users to join meeting by dialing in, check the Enable PSTN dial-in conferencing check box. By default, users can dial in to meetings by using the public switched telephone network (PSTN).
Click Commit.
Enable or disable dial-in conferencing by using Skype for Business Server Management Shell
To enable or disable dial-in conferencing, use the Set-CsConferencingPolicy cmdlet with the EnableDialInConferencing parameter as follows:
Set-CsConferencingPolicy [-EnableDialInConferencing <$true | $false>]
For more information, see Set-CsConferencingPolicy.