[comp.dcom.telecom] switch

mgrant@cos.com (Michael Grant) (10/11/88)

The Sharper Image sells a thing-a-ma-gig for about $10 which looks
exactly like a telephone "Y" adaptor.  It has 2 sockets, one marked
"phone", the other makred "ans. mach."  When another extension is
lifted anywhere in the house, the answering machine is cut off.  The
ad also states that if you put one of these suckers on each phone in
your home except your modem or fax machine, the phone is dead when the
modem or fax machine is off hook.

It looked like there were 2 LEDs on this device, but there was no
explanation what they were for.

This sounds like what you are looking for.

-Mike

p.s. I have no connection with The Sharper Image.