Date: Sun, 17 May 87 05:01:05 edt
Subject: Re: Telephone answer detection
> Note that devices that call people to play recorded messages to strangers are
> regulated in many places. These are the infamous "junk phone call"
> machines. Now, if you're building an alarm system that will call the
> cops when somebody breaks in, that is different.
Yeah, the propagation delay of the s**t hitting the fan will be shorter
because you will cut out the middleman. Alarm systems that automatically
dial police or fire are also regulated or illegal in many places, because
of the unacceptable false-alarm rate. Check before building.
Henry Spencer @ U of Toronto Zoology