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.