How to set TelephonyMode in Lync 2013 Basic (registry?)


  • For Lync 2013 Basic, I've gone into the registry and tried to set TelephonyMode. I've searched the registry and there doesn't seem to be any strings that match "TelephonyMode". There are however "OCTelephonyMode" settings, but that is it. I've made new DWORDs of "TelephonyMode" and set them to "5" to disable audio/video, as well as done the same for the "OCTelephonyMode" entries but none of the settings get picked-up by Lync 2013.

    Can I try something different or set this differently somewhere? Are there any suggestions?

    It works fine for Lync 2010.

    Tuesday, December 04, 2012 5:32 PM


All replies

  • Location has changed for 2013.  Add the TelephonyMode DWORD in: HKLM\Software\Policies\Microsoft\Office\15.0\Lync 

    Tim Harrington | Lync: MCM/MVP | Blog: | Twitter: @twharrington

    • Marked as answer by tr3spass3r Wednesday, January 09, 2013 8:12 PM
    Tuesday, December 04, 2012 5:56 PM
  • Thanks for the reply. Actually, that key and DWORD didn't exist (originally) and I had to add the Office, 15.0, and Lync keys before adding the DWORD.

    What would the reason for that be? It's still not working either. I am using Lync 2013 (15.0.4420.1017).

    Originally downloaded from:

    Thanks for any help!

    Tuesday, December 04, 2012 6:54 PM
  • Works for me...try running from an elevated command prompt:

    reg add HKLM\Software\Policies\Microsoft\Office\15.0\Lync /v TelephonyMode /t REG_DWORD /d 5 /f

    Tim Harrington | Lync: MCM/MVP | Blog: | Twitter: @twharrington

    Tuesday, December 04, 2012 6:54 PM
  • I will have to try using this "Basic" client.  I am using the VL Office 2013 version of the client.

    Tim Harrington | Lync: MCM/MVP | Blog: | Twitter: @twharrington

    Tuesday, December 04, 2012 6:55 PM
  • Thanks Tim,

    I tried the elevated command line, and although it was successful, it didn't change anything in the client. Maybe it's the client, it's very strange - when I disable smileys or other registry entries, those work fine and reflect in the client.

    I will see if I can change to a copy of Office 2013 in the meantime to do some testing but am out of ideas with this one.

    Tuesday, December 04, 2012 8:02 PM
  • Telephony features are not supported in Lync 2013 Basic. See the below client comparison chart:

    (especially look at the Telephony Support section)

    the basic client is meant for use with Office365 which does not generally support those features.

    +Say thanks and observe basic forum courtesy:
    +If this post answered your question, Mark As Answer
    +If this post was helpful, Vote as Helpful

    windowspbx blog: my thots/howtos
    see/submit Lync suggestions here: simple and public

    Wednesday, December 05, 2012 2:26 AM
  • A value of 5 will disable PC-to-PC Communicator calls, but if you have either Remote Call Control and/or Enterprise Voice enabled then it won’t disable Communicator calls.

    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

    Wednesday, December 05, 2012 9:48 AM
  • Tim,

    I tried your command and it didn't seem to work for me.  I still have the call options in my Lync UI.

    Any other ideas?

    John Dye

    Friday, January 25, 2013 9:49 PM
  • Has anyone found an answer for this?  I am attempting the same, need to disable Audio calls for Lync Basic in Office 365.  We would like to disable screen sharing as well.

    I can get video disabled using the DisablePC2PCVideo dword of 1


    Tuesday, September 10, 2013 8:48 PM
  • Where can I find a list of these registry entries for the 2013 client?
    Wednesday, October 09, 2013 8:22 PM
  • A good place to start is the ADM group policy files for Lync 2013.  From that you can usually figure out what the keys are with some help from Google.

    Wednesday, October 09, 2013 10:37 PM