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Linked Numbering Scheme
A linked numbering scheme (LNS) is a dialing procedure in effect in a service area within which call routing between adjacent exchanges does not require a dialing code. The term is only used in the United Kingdom, but not in the North American Numbering Plan. United Kingdom The largest linked numbering scheme in the UK is that for the London telephone area, formerly known as the London Director area. Within the area, several million subscribers can call each other by dialing a uniform code. For example, anyone calling from an (020) number can reach Transport for London travel enquiries by dialing 7222 1234. Smaller schemes apply outside London. Uxbridge, for example, has the subscriber trunk dialing (STD) code 01895. Uxbridge exchange is the parent for Denham, Harefield, Ruislip and West Drayton; anyone connected to any of those exchanges can call any of the others without having to prefix the number with 01895. This is achieved by giving subscriber lines on each exchange ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dial Plan
In telecommunication, a dial plan (or dialing plan) establishes the permitted sequences of digits dialed by telephone subscriber and the manner in which a telephone switch interprets these digits within the definitions of the prevailing telephone numbering plan. Dial plans in the public switched telephone network (PSTN) have traditionally been more commonly referred to as ''dialing procedures''. The collection of permissible digit patterns, so called ''digit-maps'', for a private telephone system or for customer premise equipment, such as an analog telephone adapter (ATA) or an IP phone, is sometimes also called ''dial plan''. A pattern may be as short as a single digit, e.g. for reaching an operator, or as long as a complete international telephone number, including trunk prefixes and international prefixes. Public switched telephone network (USA) *''Local numbers'' consist of seven digits within a numbering plan area with a single area code. For overlay plan, overlay numbering p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Drayton
West Drayton is a suburban town in the London Borough of Hillingdon. It was an ancient parish in the county of Middlesex and from 1929 was part of the Yiewsley and West Drayton Urban District, which became part of Greater London in 1965. The settlement is near the Colne Valley Regional Park and its centre lies north of Heathrow Airport. Traditionally the Parish of West Drayton covers . In 1901 the population of the civil parish was 984. In the 2011 Census 14,370 people were living in the West Drayton electoral ward. The ward has three councillors in the Hillingdon Borough Council.838 acres. 'Table of population, 1801-1901', in ''A History of the County of Middlesex'': Volume 2, General ed. William Page (London, 1911), pp. 112-120. British History Online http://www.british-history.ac.uk/vch/middx/vol2/pp112-120 ccessed 25 May 2018 The vast majority of the housing in West Drayton is mid-20th century. Toponymy In 939 the area was known as ''Draegtun''. Tun/ton is cognate with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Split Plan
Split(s) or The Split may refer to: Places * Split, Croatia, the largest coastal city in Croatia * Split Island, Canada, an island in the Hudson Bay * Split Island, Falkland Islands * Split Island, Fiji, better known as Hạfliua Arts, entertainment, and media Films * ''Split'' (1989 film), a science fiction film * ''Split'' (2016 American film), a psychological horror thriller film * ''Split'' (2016 Canadian film), also known as ''Écartée'', a Canadian drama film directed by Lawrence Côté-Collins * ''Split'' (2016 South Korean film), a sports drama film * '' Split: A Divided America'', a 2008 documentary on American politics * ''The Split'' (1959 film) or ''The Manster'', a U.S.-Japanese horror film * ''The Split'' (film), a 1968 heist film Games * Split (poker), the division of winnings in the card game * Split (blackjack), a possible player decision in the card game Music Albums * ''Split'' (The Groundhogs album), 1971 * ''Split'' (Lush album), 1994 * ''Split'' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ten-digit Dialing
Ten-digit dialing is a telephone dialing procedure in the countries and territories that are members of the North American Numbering Plan (NANP). It is the practice of including the area code of a telephone number when dialing to initiate a telephone call. When necessary, the ten-digit number may be prefixed with the trunk code ''1'', which is referred to as ''1+10-digit dialing'' or ''national format''. History The implementation and expansion of the North American Numbering Plan between 1947 and 1992 preserved a long-standing practice in the United States and Canada that callers should only need to dial the local seven-digit telephone number when placing a call within the caller's exchange area or within the home numbering plan area (NPA). In seven-digit dialing. callers dialed the three-digit central office code and the four-digit station number of the telephone subscriber to reach in the same numbering plan area. Dialing of an area code before the telephone number, referred to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trunk Prefix
A trunk prefix is a digit sequence to be dialed before a telephone number to initiate a telephone call for the purpose of selecting an appropriate telecommunications circuit by which the call is to be routed. Making a domestic (national) telephone call usually requires the dialing of a single or two-digit national trunk prefix preceding any area codes and the destination subscriber number. In most countries, such as Australia, China, India, France, Germany, Indonesia, Japan, the Netherlands, Sweden, and the United Kingdom, the trunk prefix is 0. For international telephone calls, the national trunk prefix is not dialed; instead, an international trunk prefix (or "+") is typically required, followed by the destination's country code. Example Assume that a call is to be made to a customer in the Australian Area/State of Queensland with the local number of 3333 3333 and the area code 7. A caller from outside Australia must dial the international call prefix of the originating coun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trunk Call
In telecommunications, trunking is a technology for providing network access to multiple clients simultaneously by sharing a set of circuits, carriers, channels, or frequencies, instead of providing individual circuits or channels for each client. This is reminiscent to the structure of a tree with one trunk and many branches. Trunking in telecommunication originated in telegraphy, and later in telephone systems where a trunk line is a communications channel between telephone exchanges. Other applications include the trunked radio systems commonly used by police agencies. In the form of link aggregation and VLAN tagging, trunking has been applied in computer networking. Telecommunications A trunk line is a circuit connecting telephone switchboards (or other switching equipment), as distinguished from local loop circuit which extends from telephone exchange switching equipment to individual telephones or information origination/termination equipment. Trunk lines are used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Seven-digit Dialing
Seven-digit dialing is a telephone dialing procedure customary in some territories of the North American Numbering Plan (NANP) for dialing telephone numbers in the same numbering plan area (NPA). NANP telephone numbers consist of ten digits, of which the leading three are the area code. In seven-digit dialing it is not necessary to dial the area code. The procedure is also sometimes known as ''local format'' or ''network format''. History Originally, telephone exchanges consisted of manual switchboards operated by switchboard operators. Telephone numbers had typically two to four digits, depending on the size of the community. As the number of subscribers grew, multiple exchanges served individual neighborhoods of large cities. Multiple exchanges were identified by a central office name and typically four digits, such as "Pennsylvania 5000". A rural telephone number, often party line, had often up to four digits plus a letter or letter and digits to indicate which of the multipl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruislip
Ruislip ( ) is an area in the London Borough of Hillingdon in West London, and in the historic county of Middlesex. Ruislip lies west-north-west of Charing Cross, London. The manor of Ruislip appears in the Domesday Book, and some of the earliest settlements still exist today, designated as local heritage sites. The parish church, St Martin's, dates back to the 13th century and remains in use. The buildings at the northern end of Ruislip High Street form the core of the original village square and are now Grade II listed. It originally featured a central water pump, but this was moved out of the road in the 1970s as a result of increased traffic. The expansion of the Metropolitan Railway from Harrow in the early 20th century acted as a catalyst for development in the area. Ruislip station opened in 1904, and a new Urban district (Great Britain and Ireland), urban district was created to reflect the forthcoming population growth; the Ruislip-Northwood Urban District split fr ... [...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] |
Harefield
Harefield is a village in the London Borough of Hillingdon, England, northwest of Charing Cross near Greater London's boundary with Buckinghamshire to the west and Hertfordshire to the north. The population at the 2011 Census was 7,399. Harefield is the westernmost settlement in Greater London. Harefield is near Denham, Ickenham, Northwood, Rickmansworth, Ruislip and Uxbridge. Pioneering heart surgery techniques were developed at Harefield Hospital. History Two sites near Dewes Farm have produced late Mesolithic artefacts. Harefield enters recorded history through the ''Domesday Book'' (1086) as ''Herefelle'', comprising the Anglo-Saxon words ''Here'' "anisharmy" (c.f. the English ''fyrd'') and ''felle'' (later ''feld''), "field". Before the Norman conquest of England, the Manor of Harefield belonged to Countess Goda, the sister of Edward the Confessor. Her husbands were French, Dreux of the Vexin and Count Eustace of Boulogne. Following the Norman conquest, ownership ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denham, Buckinghamshire
Denham is a village and civil parish in the unitary authority of Buckinghamshire, England, approximately from central London, northwest of Uxbridge and just north of junction 1 of the M40 motorway. The name is derived from the Old English for "homestead in a valley". It was listed in the Domesday Book of 1086 as ''Deneham''. Denham contains the Buckinghamshire Golf Club. Buildings The Church of England parish church of Saint Mary has a flint and stone Norman tower and Tudor monuments. The tree-lined Village Road includes several old red brick houses with mature ''Wisteria'' on them, and has been used as a location in British films and television. Southlands Manor is a Grade II listed building. Its entry on the English Heritage website states that it was built in the 16th century, with a variety of later changes including the addition of four chimney stacks in the early 17th-century. Analysis of a sample of timbers from the main building and its associated barn have found th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
