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  2. Area codes 315 and 680 are telephone area codes of the North American Numbering Plan (NANP) for the north- central area of the U.S. state of New York. Area code 315 was installed as one of the original North American area codes in 1947, while area code 680 was added to the numbering plan area (NPA) in an overlay plan in 2017.

  3. List of North American Numbering Plan area codes - Wikipedia. Contents. hide. (Top) Area codes in numerical order. 200–299. 300–399. 400–499. 500–599. 600–699. 700–799. 800–899. 900–999. Area codes by country, state, province, and regions. United States. Canada. Caribbean and Atlantic islands. U.S. Pacific territories. Non-geographic area codes.

    • History
    • Numbering Plan Requirements
    • Central Office Prefixes
    • Numbering Plan Areas
    • Assignment Plan
    • Implementation and Expansion
    • See Also

    Early during the 20th century, the American and Canadian telephone industry had established criteria and circuits for sending telephone calls across the vast number of local telephone networks on the continent to permit users to call others in many remote places in both countries. By 1930, this resulted in the establishment of the General Toll Swit...

    Building a nationwide network in which any telephone could be dialed directly required a systematic numbering system that was easy to understand and communicate. Local telephone numbers varied greatly across the country, from two or three digits in small communities, to seven in the large cities. By the time the Bell Laboratory engineers began effo...

    Most automatic dial switching systems were designed since the early 1920s to provide service for as many as ten-thousand subscriber lines. Each of these switching systems constituted a local telephone exchange, formally known as a central office. Therefore, each telephone connected to a central office had a unique four-digit line or station number....

    By 1945, initial concepts for a nationwide numbering plan anticipated a division of the continent into between fifty and seventy-five numbering plan areas. For this size of the network, a unique two-digit code for each numbering plan area (NPA) would have been sufficient. However, AT&T wanted to preserve existing dialing practices by only dialing t...

    The number of central offices that could be effectively installed with a numbering plan with two letters and one digit for the central office code was expected to be approximately five-hundred, because acceptable names for central offices had to be selected carefully to avoid miscommunication. States or provinces that required this many offices had...

    For several years, area codes could be used only for Operator Toll Dialing by long-distance operators on routes between toll offices equipped with trunk code translation equipment. This absent, operators still had to rely on route operators and office-specific trunk codes, or employ the previous method of ringdown forwarding between intermediate op...

    • 217, 312, 618, 815
    • 216, 419, 513, 614
    • 212, 315, 518, 716, 914
    • 215, 412, 717, 814
  4. 6 days ago · 315 is an area code located in the state of New York, US. The largest city it serves is Syracuse. Location, time zone and map of the 315 area code

  5. Area code 315 serves the state of New York. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 315 is a General Purpose Code. 315 service area does overlap with 680 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.

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