Trust me, Arthur. I'd be happy if I knew half of what you've forgotten.

I stumbled upon this quite by accident when I dismantled some 6A intercom equipment and was trying to put it back together in 1978. I was trying to devise a way for intercom calls to ring double while maintaining single rings for CO calls. About the only thing that I was ever able to accomplish was the double rings.


Ed Vaughn, MBSWWYPBX