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What year was 4 digit phone numbers used? - Answers
What did phone numbers look like in 1920?
Jun 23, 2024 · As the phone company prepared for direct local dialing, all numbers became four digits. Previously, two- and three-digit numbers were expanded by adding one or two zeros. For example, a number like Spring 255 …
History Lesson: All About Phone Numbers
Jul 17, 2018 · Telephone engineers created a 7-digit system for “all number calling” to expand their pool of possible number combinations. The first 3 digits would correspond to a certain phone service provider, and the last 4 digits …
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Oct 11, 2023 · The first customer-dialed direct call using a 10-digit number, complete with an area code, was made on November 10, 1951. Explore the fascinating evolution of US phone numbers from their alphanumeric origins to …
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A telephone number is a sequence of digits assigned to a landline telephone subscriber station connected to a telephone line or to a wireless electronic telephony device, such as a radio telephone or a mobile telephone, or to other …
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