Web/API/RTCRtpSender/dtmf

The read-only dtmf property on the RTCRtpSender interface returns a RTCDTMFSender object which can be used to send DTMF tones over the RTCPeerConnection . See Using DTMF for details on how to make use of the returned RTCDTMFSender object.

Syntax

var dtmfSender = RTCRtpSender.dtmf;

Value

An RTCDTMFSender which can be used to send DTMF over the RTP session, or null if the track being carried by the RTP session or the RTCPeerConnection as a whole doesn't support DTMF.

Only audio tracks can support DTMF, and typically only one audio track per RTCPeerConnection will have an associated RTCDTMFSender

Example

tbd

Specifications

Specification	Status	Comment
WebRTC 1.0: Real-time Communication Between BrowsersThe definition of 'RTCRtpSender.dtmf' in that specification.	Candidate Recommendation

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`dtmf`	Chrome Full support Yes	Edge Full support ≤18	Firefox Full support 52	IE No support No	Opera Full support Yes	Safari ?	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android Full support 52	Opera Android Full support Yes	Safari iOS ?	Samsung Internet Android Full support Yes

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown