By default, the Audio/Video is enabled in Lync client. In some scenarios, you may want to disable them. There are two way to achieve this:
The first solution is based on the user – control the user policy in the Lync control panel as following:
The second solution is based on the computer – modify the registry key as following:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Communicator]
“TelephonyMode”=dword:000000005
This is how it looks like now:
Future more, if you want the Lync client to pick ‘Do not join audio’ option when start a new meeting. Change the registry key as followings:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Communicator]
“JoinAudioConferenceFrom”=dword:00000000
“AllowOverridingDeviceAtJoinTime”=dword:00000000
And if you don’t the system automatically starts Lync when the users log on to Windows. Here is the way to do it:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Communicator]
“AutoRunWhenLogonToWindows”=dword:00000000
Are there values between Zero and Five? Is there a definition for 1-4??
Other values listed here: https://ucgeek.co/2014/09/disable-telephony-in-lync-2013-client/
0: PC to PC Calls only (default)
1: Enterprise Voice
2: Remote Call Control
3: Enterprise Voice with PBX Integration
4: RCC but PC to PC disabled
5: IM & Presence Only