Post 370558 by Rob_T_Firefly@b3ta.social
 (DIR) More posts by Rob_T_Firefly@b3ta.social
 (DIR) Post #370558 by Rob_T_Firefly@b3ta.social
       2018-10-04T22:14:25Z
       
       0 likes, 1 repeats
       
       I think I've managed to cut down on my spam robocalls with an old trick from the analog era. I send all unknown calls to voicemail, and my voicemail greeting starts with an Intercept Tone (more info: https://en.wikipedia.org/wiki/Special_information_tone , playable/downloadable at https://en.wikipedia.org/wiki/File:IC_SIT.ogg )The Intercept Tone is the famous "doo-daa-deep" at the beginning of US telephone company recordings informing the caller that the number has been disconnected.
       
 (DIR) Post #370568 by Rob_T_Firefly@b3ta.social
       2018-10-04T22:14:40Z
       
       0 likes, 1 repeats
       
       Listen to some old-school telco recordings it appeared in at https://www.thisisarecording.com/disconnected.html .The idea, of course, is that robocalling systems will hear the tones and flag my number as no good, while humans will keep listening and hear my normal greeting. After a month or so I seem to be getting significantly fewer of the latest flood of robocalls.