Telephone line status indicator with VU meter
3,587 views · Published 29 January 2010 · 2:55 · Indexed 3 October 2026
Channel: RODALCO2007 · 2010 · Science & Technology
This is a simple telephone line status indicator which is very handy to check if a phone line socket is working. It will give a visual indication of 3 line status. 1.- Standby 2.- Engaged 3.- Ring tone To make it is simple. Old VU meter, one resistor 220 - 470 k.Ohms, small bridge rectifier. This one I made up for the New Zealand phone line sockets, but can be adapted to fit any phone socket.
