Add a sound when you press a number button while using sendDigits

[kimhanmiru]

I am implementing a keypad that can do DTMF, and I plan to use sendDigits.

In CCP, a sound is made when the keypad is pressed. What function should I use in stream.js to make a sound?

(ref)
Connection.prototype.sendDigits = function (digits, callbacks) {
var client = connect.core.getClient();
client.call(connect.ClientMethods.SEND_DIGITS, {
contactId: this.getContactId(),
connectionId: this.getConnectionId(),
digits: digits
}, callbacks);
};