session.answer();
tts = new TeleTone(session);
tts.addTone("d", 350.0, 440.0, 0.0);
function dtmf_test(type, digits, arg)
{
    console_log("you pressed " + digits + "\n");
    return digits;
}

tts.onDTMF(dtmf_test);
read = tts.generate("d(1000,0)", 2);
if (read) {
    test = session.speak("cepstral", "david", "you dialed " + read);
}

var ATTN = "v=4000;%(100,100,1400.0, 2060.0, 2450.0, 2600.0)";
tts.generate(ATTN,100);