My Telephony Phone Commands Don't Work

My telephony phone commands don't work.

DTMF tones are no longer recognized.

Webex doesn't recognize my DTMF commands.


This change was made in order to provide the host with ultimate control over the muting and unmuting of attendees. Other back-end enhancements were made that tie in to this change and provide additional meeting stability.


Dual-Tone Multi-Frequency (DTMF) commands are no longer supported with meetings scheduled for Cisco Webex Training. This means that *6 to mute/unmute, ** to play the DTMF menu, etc, will not work if the conference is associated with a web session. The intent is to make the GUI the primary control interface for all integrated teleconferences. We recognize this may cause issues with some customers who used the DTMF commands as a primary control method.

Please note that the functionality for audio-only conferences has not changed; standalone conferences not associated with a Webex meeting (like most use of PCN accounts) will continue to use the standard DTMF commands.

Note: Pressing *6 on your phone is supported for Webex Audio users on Webex Meetings and Events. If the DTMF command does not work, a site administrator will need to enable this option:

Site Administrators Only

  1. Log in to your Cisco Webex Meetings Site Administration page. (Example:
  2. Click on Configuration > Common Site Settings > Options.
  3. In the Site Options section, check the box for Enable users to mute or unmute telephone audio by pressing *6.
  4. Scroll to the bottom of the page, then click Update.

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