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The Ohio Bell Telephone Company, now doing business as AT&T Ohio, is the Bell Operating Company serving most of Ohio and parts of West Virginia. It is a wholly owned subsidiary of AT&T . Its headquarters is the Ohio Bell Building at 750 Huron Road, Cleveland , Ohio , and formerly had a secondary headquarters at 150 East Gay Street, Columbus ...
Western Electric Co., Inc. was an American electrical engineering and manufacturing company that operated from 1869 to 1996. A subsidiary of the AT&T Corporation for most of its lifespan, Western Electric was the primary manufacturer, supplier, and purchasing agent for all telephone equipment for the Bell System from 1881 until 1984, when the Bell System was dismantled.
The AT&T Huron Road Building (formally known as the Ohio Bell Building) is an art deco skyscraper located at 750 Huron Road in downtown Cleveland, Ohio. It serves as the corporate headquarters for Ohio Bell, a regional telephone company owned by AT&T. The building has 24 stories and rises to a height of 365 ft (111 m). [1]
The AT&T Madison Complex Tandem Office is a 17-story, 79 m (259 ft) building in Los Angeles, California, completed in 1961. With its microwave tower, used through 1993, bringing the overall height to 137 m (449 ft), it is the 47th tallest building in Los Angeles.
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
A telephone switch is the switching equipment of an exchange. A wire center is the area served by a particular switch or central office. A concentrator is a device that concentrates traffic, be it remote or co-located with the switch. An off-hook condition represents a circuit that is in use, e.g., when a telephone call is in progress.
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A U.S. Geological Survey satellite image shows the site of the "Big Hole" Project Office including its two above ground tropospheric scatter antennas.. A Project Office located in Chatham County, North Carolina, colloquially known as "Big Hole", came online in the mid-1960s and was described by area residents and persons employed in the construction of the site as being "department-store sized ...
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