ontonechange property
[Some information relates to pre-released product which may be substantially modified before it's commercially released. Microsoft makes no warranties, express or implied, with respect to the information provided here.]
Event handler using the RTCDTMFToneChangeEvent interface to return the character for each tone as it is played out.
Syntax
//Send a 1-second "1" tone followed by a 2-second "2" tone:
var sender = new RTCDtmfSender(sendObject);
sender.ontonechange = function (e) {
if (e.tone == "1")
sender.insertDTMF("2", 2000);
};
sender.insertDTMF("1", 1000);
Property values
Type: EventHandler