&gt; the special 3 beeps intro actually works to fool robo-dialers<p>I&#x27;ve setup a service so if the number is withheld or international, it plays a recording asking the user to press 1 to speak to a person. It works 95% of the time.<p>I assume the dialers interpret it as an answer machine so don&#x27;t connect the call to a real person. A couple of family members have withheld numbers, and they know they just need to press 1 as soon as they here it to reach us.