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This API is available on Firefox OS for internal applications only.

The startTone() method of the Telephony Interface begins generating the tone for the specified DTMF character. The tone is sent to the currently active call, and continues to sound until a corresponding call to Telephony.stopTone().

Syntax

myTelephony.startTone(dtmfChar);

Parameters

dtmfChar
A DOMString indicating the DTMF character to dial; this must be a character from 0-9, "*", or "+".

Returns

Void.

Examples

// Telephony object
var tel = navigator.mozTelephony;

tel.startTone("1");

Specifications

Specification Status Comment
Web Telephony Draft Draft

Browser compatibility

For obvious reasons, support is primarily expected on mobile browsers.

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support No support No support No support No support No support
Feature Android Firefox Mobile (Gecko) Firefox OS (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support 12.0 (12.0) 1.0.1 No support No support No support

See also

Document Tags and Contributors

 Contributors to this page: chrisdavidmills, teoli, fscholz, MHasan, kscarfone, Jeremie, Sheppy, ethertank
 Last updated by: chrisdavidmills,