Rotary dial

（重定向自Voice dial）

A traditional North American rotary phone dial. The associative lettering was originally used for dialing named exchanges, but was kept because it facilitated memorization of telephone numbers.

The LM Ericsson Dialog from the 1960s that remained popular in Sweden up until the 1980s

1910 Advertisement for dial telephone service in Chicago from the Illinois Tunnel Company, showing Automatic Electric-made phone

A 1931 Ericsson rotary dial telephone without lettering on the finger wheel, typical of European telephones. The 0 precedes 1.

A rotary dial is a component of a telephone or a telephone switchboard that implements a signaling technology in telecommunications known as pulse dialing. It is used when initiating a telephone call to transmit the destination telephone number to a telephone exchange.

单词	Voice dial
释义	Voice dial 英语百科 Rotary dial （重定向自Voice dial） A rotary dial is a component of a telephone or a telephone switchboard that implements a signaling technology in telecommunications known as pulse dialing. It is used when initiating a telephone call to transmit the destination telephone number to a telephone exchange.
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