RTCPeerConnection: createDTMFSender() method

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.

The createDTMFSender() method of the RTCPeerConnection interface creates a new RTCDTMFSender object associated with the specified MediaStreamTrack, which can be used to send DTMF tones over the connection.

This method is deprecated and should not be used. Instead, use the RTCRtpSender.dtmf property to access the DTMF sender associated with a specific sender.

Syntax

createDTMFSender(track)

Parameters

track: A MediaStreamTrack object representing the track to associate with the new DTMF sender.

Return value

A new RTCDTMFSender object.

Examples

This example creates a new DTMF sender associated with the specified track.

navigator.getUserMedia({ audio: true }, (stream) => {
  const pc = new RTCPeerConnection();
  const track = stream.getAudioTracks()[0];
  const dtmfSender = pc.createDTMFSender(track);
});

This could be rewritten using the RTCRtpSender.dtmf property:

navigator.getUserMedia({ audio: true }, (stream) => {
  const pc = new RTCPeerConnection();
  const track = stream.getAudioTracks()[0];
  const sender = pc.addTrack(track, stream);
  const dtmfSender = sender.dtmf;
});

Specifications

This feature is non-standard and not part of any specification.

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`createDTMFSender` Deprecated Non-standard	Chrome – Full support Chrome 27 (Release date: 2013-05-21) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 15 (Release date: 2013-07-02) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 27 (Release date: 2013-05-22) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 15 (Release date: 2013-07-08) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 1.5 (Release date: 2013-09-25) footnote Full support	WebView Android – Full support WebView Android 4.4 (Release date: 2013-12-09) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support

Tip: you can click/tap on a cell for more information.

Full support: Full support
No support: No support
: Non-standard. Check cross-browser support before using.
: Deprecated. Not for use in new websites.