Как звонить по телефону Инструкция от 1939 года - AT&T Archives: Introduction to the Dial Telephone

See more from the AT&T Archives at This short subject newsreel was shown in movie theaters the week before a town’s or region’s telephone exchange was to be converted to dial service. It’s extremely short—a little over a minute, like a PSA. The film concisely explains how to use a dial telephone, including how to dial, how to recognize dial tone, and how to recognize a busy signal. The first dial telephonewas manufactured in 1897. It was part of an automatic switching/d