off hook signal detector for land line phones.Does this exist?
My grandfather leaves his cordless phone off the hook all the time. Since it is a multi phone cordless system it is frustrating to find it or go there and take care of it? I would like to build a unit that will detect the sound/signal from the phone company to alert you that a phone is off the hook, and have it cycle the power on the base to reset the connection to the handsets. Any ideas?