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Exchange Code Protection
In the administration of the North American Numbering Plan, central office code protection is a numbering policy for maintaining local seven-digit dialing in communities that extend on both sides of the boundary line between multiple numbering plan areas (NPAs), such as in cross-border towns on state lines. Code protection prevents the use of the same telephone number on both sides by not assigning the same central office code of one NPA in the adjacent NPA.AT&T (1980), ''Notes on the Network'', p.2-4 Central office code protection was once common in communities on provincial or state boundary lines. It has been declining in use as inefficient allocation of numbering resources to the growing number of competitive local exchange carriers has caused depletion of available number prefixes, often requiring ten-digit local calls and overlay plans where multiple area codes serve the same geographic location. Despite its advantages where a community of interest reaches across an NPA bou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North American Numbering Plan
The North American Numbering Plan (NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the international calling code ''1''. Some North American countries, most notably Mexico, do not participate in the NANP. The NANP was originally devised in the 1940s by the American Telephone and Telegraph Company (AT&T) for the Bell System and the independent telephone operators in North America. The goal was to unify the diverse local numbering plans that had been established in the preceding decades and prepare the continent for direct-dialing of calls by customers without the involvement of telephone operators. AT&T continued to administer the numbering plan until the breakup of the Bell System, when administration was delegated to the North American Numbering Plan Administrator (NANPA), a service that has been procured from the private sector by the Fede ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Coffeyville, Oklahoma
South Coffeyville is a town in Nowata County, Oklahoma, United States. As of the 2010 census, the town population was 785. The city of Coffeyville, Kansas is located approximately one mile north of the city, existing as a separate political entity. History For millennia, the land now known as Oklahoma was inhabited by Native Americans. In the 17th century, white trappers first visiting the area found it occupied mostly by the Osage and Quawpaw tribes. In 1803, modern Oklahoma was secured by the United States as part of the Louisiana Purchase. In 1819, the Arkansas Territory was organized, then was split in 1824 and 1828. An 1828 treaty with the Cherokee Nation assigned the area of Nowata County to the Cherokees, who included it in 1856 in their newly created Cooweescoowee District. The Cherokees and the Delaware signed a treaty in 1867. In 1890, the area became part of the Oklahoma Territory. In 1907, Oklahoma became the 46th U.S. state and Nowata County was founde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 613
Area is the quantity that expresses the extent of a region on the plane or on a curved surface. The area of a plane region or ''plane area'' refers to the area of a shape or planar lamina, while ''surface area'' refers to the area of an open surface or the boundary of a three-dimensional object. Area can be understood as the amount of material with a given thickness that would be necessary to fashion a model of the shape, or the amount of paint necessary to cover the surface with a single coat. It is the two-dimensional analogue of the length of a curve (a one-dimensional concept) or the volume of a solid (a three-dimensional concept). The area of a shape can be measured by comparing the shape to squares of a fixed size. In the International System of Units (SI), the standard unit of area is the square metre (written as m2), which is the area of a square whose sides are one metre long. A shape with an area of three square metres would have the same area as three such squar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kansas City Metropolitan Area
The Kansas City metropolitan area is a bi-state metropolitan area anchored by Kansas City, Missouri. Its 14 counties straddle the border between the U.S. states of Missouri (9 counties) and Kansas (5 counties). With and a population of more than 2.2 million people, it is the second-largest metropolitan area centered in Missouri (after Greater St. Louis) and is the largest metropolitan area in Kansas, though Wichita is the largest metropolitan area centered in Kansas. Alongside Kansas City, Missouri, these are the suburbs with populations above 100,000: Overland Park, Kansas; Kansas City, Kansas; Olathe, Kansas; Independence, Missouri; and Lee's Summit, Missouri. Business enterprises and employers include Cerner Corporation (the largest, with almost 10,000 local employees and about 20,000 global employees), AT&T Inc., AT&T, BNSF Railway, GEICO, Asurion, T-Mobile (formerly Sprint Corporation, Sprint), Black & Veatch, AMC Theatres, Citigroup, Garmin, Hallmark Cards, Macquarie Grou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
508 Area Code
Area codes 508 and 774 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of Massachusetts. The numbering plan area comprises south-central and most of southeastern Massachusetts ( LATA code 128). It includes Worcester, Outer south and southwest Greater Boston (such as the MetroWest region), as well as Fall River, New Bedford, Cape Cod, Martha's Vineyard, and Nantucket. History Massachusetts was originally divided into two numbering plan areas, when AT&T initiated the development of the North American Numbering Plan in 1947. Area code 617 was assigned to the eastern two-thirds of Massachusetts from roughly the western end of Worcester County to Boston, The Cape and Islands, and the South Coast, while the western part received area code 413. Area code 508 was created on July 16, 1988, in a split from 617, with a semicircle around Boston retaining 617 and the northern, western, and southern parts of the area becoming 508. Permissive di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overlay Area Code
In telecommunications, an area code overlay complex is a telephone numbering plan that assigns multiple area codes to a geographic numbering plan area (NPA). Area code overlays are implemented in territories of the North American Numbering Plan (NANP) to mitigate exhaustion of central office codes in growth areas. The method has been in use since 1992, and has been the preferred and exclusive method of relief since 2007. History From the inception of the North American Numbering Plan in 1947 until 1992, the only method of introducing new area codes was the area code split. It divided an existing numbering plan area (NPA) into multiple regions, one of which retained the existing area code. The other parts were assigned a new NPA code each. The retaining area was usually the historically more established or developed place, and required no numbering changes. It gained numbering capacity by acquiring the central office codes of the other areas, because those were delegated to a n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verizon New England
Verizon New England, Inc. is a Bell Operating Company that serves most of Massachusetts and all of Rhode Island. It was formerly New England Telephone and Telegraph Company, more commonly known as New England Telephone, which for seven decades served most of the New England area of the United States as a part of the original AT&T. New England Telephone's coverage area included Maine, New Hampshire, and Vermont as well as Massachusetts and Rhode Island, but Verizon sold off service in the northern three states, which as of 2020 are served by Consolidated Communications. After the Bell System divestiture, New England Telephone merged with New York Telephone to form NYNEX in 1984. NYNEX was acquired by Bell Atlantic in 1997. In 2000, Bell Atlantic bought GTE and changed its own name to Verizon. New England Telephone was then renamed Verizon New England. History New England Telephone & Telegraph Company (N.E.T.&T. Co.) was incorporated in the State of New York in 1883 by consol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Providence, Rhode Island
Providence is the capital and most populous city of the U.S. state of Rhode Island. One of the oldest cities in New England, it was founded in 1636 by Roger Williams, a Reformed Baptist theologian and religious exile from the Massachusetts Bay Colony. He named the area in honor of "God's merciful Providence" which he believed was responsible for revealing such a haven for him and his followers. The city developed as a busy port as it is situated at the mouth of the Providence River in Providence County, at the head of Narragansett Bay. Providence was one of the first cities in the country to industrialize and became noted for its textile manufacturing and subsequent machine tool, jewelry, and silverware industries. Today, the city of Providence is home to eight hospitals and List of colleges and universities in Rhode Island#Institutions, eight institutions of higher learning which have shifted the city's economy into service industries, though it still retains some manufacturin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
401 Area Code
Area code 401 is the sole telephone area code of Rhode Island. 401 is one of the original 86 North American area codes, which were created in 1947. Rhode Island is among the 12 U.S. states or North American jurisdictions with only one area code. The 401 area code is not projected to be exhausted until 2053.https://www.nationalnanpa.com/reports/October%202021%20NPA%20Exhaust%20Analysis.pdf See also * References 401 401 __NOTOC__ Year 401 ( CDI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Vincentius and Fravitus (or, less frequently, year 1154 ' ... Telecommunications-related introductions in 1947 {{RhodeIsland-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Providence, Rhode Island
East Providence is a city in Providence County, Rhode Island, United States. The population was 47,139 at the 2020 census, making it the fifth-largest city in the state. Geography East Providence is located between the Providence and Seekonk Rivers on the west and the Seekonk area of Massachusetts on the east. According to the United States Census Bureau, the city has a total area of , of which, of it is land and of it (19.33%) is water. The following villages are located in East Providence: * East Providence Center * Riverside * Rumford Governance The City of East Providence is governed by an elected mayor and a five-member city council, with the mayor and counselors elected every four years. City council members are elected one each from four wards and one elected at-large. Executive branch The mayor is both the ceremonial leader of the city and the chief executive officer. The mayor runs the daily operations of the city, enforces the charter and ordinances of the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wire Center
telephone exchange, telephone switch, or central office is a telecommunications system used in the public switched telephone network (PSTN) or in large enterprises. It interconnects telephone subscriber lines or virtual circuits of digital systems to establish telephone calls between subscribers. In historical perspective, telecommunication terms have been used with different semantics over time. The term ''telephone exchange'' is often used synonymously with ''central office'', a Bell System term. Often, a ''central office'' is defined as a building used to house the inside plant equipment of potentially several telephone exchanges, each serving a certain geographical area. Such an area has also been referred to as the exchange or exchange area. In North America, a central office location may also be identified as a ''wire center'', designating a facility to which a telephone is connected and obtains dial tone. For business and billing purposes, telecommunication carriers defin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Massachusetts
Massachusetts (Massachusett language, Massachusett: ''Muhsachuweesut [Massachusett writing systems, məhswatʃəwiːsət],'' English: , ), officially the Commonwealth of Massachusetts, is the most populous U.S. state, state in the New England region of the Northeastern United States. It borders on the Atlantic Ocean and Gulf of Maine to the east, Connecticut and Rhode Island to the south, New Hampshire and Vermont to the north, and New York (state), New York to the west. The state's capital and List of municipalities in Massachusetts, most populous city, as well as its cultural and financial center, is Boston. Massachusetts is also home to the urban area, urban core of Greater Boston, the largest metropolitan area in New England and a region profoundly influential upon American History of the United States, history, academia, and the Economy of the United States, research economy. Originally dependent on agriculture, fishing, and trade. Massachusetts was transformed into a manuf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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