Let's not forget that eliminating a noise crash isn't the only reason for an audio delay. Helping my echolink node not get confused about what it is supposed to listen to is my primary purpose for having the delay.
They audio delay keeps the first blip of DTMF from getting decoded by anything other than the controller. -- Cort Buffington H: +1-785-838-3034 M: +1-785-865-7206