On 24/03/2019 09:24, Scott wrote:
On Sat, 23 Mar 2019 19:55:04 +0000, Steve Walker
wrote:
[snip]

Do you think that computer systems can't determine rapidly the
difference between the start of a recorded message and the rising tone
of a questioning hello followed by waiting for a reply?

Is there an argument for saying nothing and waiting to see if the
caller speaks?

A legitimate caller might think there's no-one at your end.

--
Max Demian