Are there indicator lights for incoming calls?

Question

Electronics

Interested in the light indicator of incoming phone calls to a landline phone. Connecting the phone to the line is standard - two wires. Are there indicators that are enough to be connected in series with the phone so that it starts flashing when incoming calls?
It often happens that I am wearing headphones and can not hear the call. I would like to have such a "beacon" :-)

Answer 1

Погуглите решения для глухих. У них там целый набор этих индикаторов.