Materials of A Bell system?

B

billrussell42

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Bell System such as a door bell? Or: The Bell System was the AT&T monopoly that provided telephone service in the United States from 1877 to 1984. In 1984, the company was broken up into separate companies, by a Federal mandate.

I'll assume you mean door bell.

pushbutton, wires, doorbell, and transformer

.
 
Bell System such as a door bell? Or: The Bell System was the AT&T monopoly that provided telephone service in the United States from 1877 to 1984. In 1984, the company was broken up into separate companies, by a Federal mandate.

I'll assume you mean door bell.

pushbutton, wires, doorbell, and transformer

.
 
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