Hello,

In Office 365, you can manage audio video permissions on Skype for your users in your tenant.For that, we need to install the Skype Online PowerShell module, you’ll find it here.

On installed, you need to open a connection to your tenant :

$Cred = Get-Credential
$Session = New-CsOnlineSession -Credential $Cred
Import-PSSession $Session

Disable Audio Video

By default, new users in your tenant can use audio and video in Skype, but, if you have limited bandwidth in your corporate LAN, you may want to block audio and video. You can also work on quality of service (QoS) on your network equipment, but that means involving the network guys. So here we go and doing ourselves with PowerShell :

Set-CsUser -Identity $UPN -AudioVideoDisabled $true
Grant-CsConferencingPolicy -Identity $UPN -PolicyName BposSVoipDisabled

The first line disable the audio and video, and the second line affect the conferencing policy that disable audio video too.

Enable Audio Video

Once you disabled the audio and video for a user, you may want to enable it back when you upgraded your network :

Set-CsUser -Identity $UPN -AudioVideoDisabled $false
Grant-CsConferencingPolicy -Identity $UPN -PolicyName BposSAllModality

If you want to enable audio and video but with low quality :

Set-CsUser -Identity $UPN -AudioVideoDisabled $false
Grant-CsConferencingPolicy -Identity $UPN -PolicyName BposSAllModalityMinVideoBW

Check the status

You can check the user current status :

Get-CsOnlineUser -Identity $UPN | Select-Object UserPrincipalName,ConferencingPolicy,AudioVideoDisabled

Note : If your users are mobile, you should not disable the audio and video feature but use network QoS on your LAN because most of the time, the mobile users won’t use your bandwidth.