[Freeswitch-users] Handling DTMF noinput and nomatch

Hi, The following javascript file asks callers to enter their 4 digit PINs. I am wondering if an event will be fired when a caller doesn't enter anything or enter just 3 digits. If not, what is the recommended way of handling those cases? Thanks. function on_dtmf(session, type, digits, arg) { dtmf_digits += digits.digit; return(false); } session.answer(); while (session.ready()) { dtmf_digits = ""; session.flushDigits(); session.speak("flite", "kal", 'please enter your 4 digit pin', on_dtmf); dtmf_digits = session.getDigits(4, "", 5000, 1000, 10000); console_log("pin=" + dtmf_digits + "\n"); }