exchange or telephone switch is a system of electronic components that connects telephone ... code Telephone numbering plan Area code NPA , which covers multiple exchanges, and which an exchange ... thumb 250px Tivadar Pusk s , inventor of the telephoneexchange. File HungarianTelekomMiskolc01.jpg thumb 250px Exchange in Miskolc, Hungary Prior to the telephone, electrical switches were used to switch telegraph lines. One of the first people to build a telephoneexchange was Hungary Hungarian ... ref George W. Coy designed and built the first commercial telephoneexchange which opened in New Haven ... where calls are routed by a switch interpreting dialed digits telephoneexchange for the building ... housing switching and related inside plant equipment. telephoneexchange means an exchange ... s telephone to the switch or manual exchange carry 48VDC nominal from the telephone company ... telephoneexchange building in Australia. Automatic exchanges , or dial service , came into existence ... is the brains of an automatic exchange. It is a device for routing calls from one telephone to another, generally as part of the public switched telephone network . The local exchange automatically ... System 7 SS7 . Digital switches Image Pbx satellite telephoneexchange 0a.jpg thumb 250px A typical ... 5ESS switch , Siemens EWSD and Ericsson AXE telephoneexchange . With few exceptions, such as Pulse ... level switches or tandems. Some telephoneexchange buildings in small towns now house only remote ... The telephoneexchange concept has been adapted for use in Internet exchange point Internet exchanges ... Stored Program Control exchange Strowger switch Telephone number Digital subscriber line access ... Exchange or business level switch Telephoneexchange names Faraday Building First telephoneexchange ... center except in DOD Defense Switched Network formerly AUTOVON usage , switching exchange, telephone ... telephoneexchange http www.google.com patents?id xL9WAAAAEBAJ&dq 252576 patent 252,576 for the first ... more details
TelephoneExchange Building may refer to order in the U.S. by state then city TelephoneExchange Building Powhatan, Arkansas , National Register of Historic Places listings in Lawrence County, Arkansas listed on the National Register of Historic Places in Lawrence County, Arkansas TelephoneExchange Building Norwich, Connecticut , listed on the National Register of Historic Places in New London County, Connecticut order in the U.S. by state then city See also List of telephone company buildings disambig ... more details
The Melbourne TelephoneExchange Company operated Australia s first telephoneexchange. The exchange was located at 367 Collins Street. It commenced operation in August 1880. H.B.Moore was the first manager. W.H. Masters and T.T. Draper were the owners of the company. It later became the Victorian TelephoneExchange Company. Private ownership continued until 1887, when it was bought out by the Victorian Colonial Government. In the first year it had 23 subscribers but by 1887 it had 887 subscribers. External links http www.retro rotary phones.com ccp0 display history of the telephoneexchange in australia.html History of Telephone Exchanges in Australia , Retro Rotary website. Telecommunications Category Defunct telecommunications companies of Australia telecom company stub ... more details
Category Telephoneexchange buildings ...Image Guardian Exchange.jpg thumb 250px Entrance to the Guardian Exchange, Manchester. The entrance is on George Street, between Princess Street and Dickinson Street in Manchester City Centre Guardian Exchange was an underground telephoneexchange built in Manchester in the 1950s. It was built together with the Anchor Exchange in Birmingham and the Kingsway telephoneexchange Kingsway exchange in London all believed to provide hardened communications in the event of nuclear war. Today the underground site is used for telephone cabling. Use as a nuclear bunker The Guardian Bunker has been called the Best kept secret in Manchester and its existence was only outed in 1968, 14 years after initial construction. ref Cite web title Manchester s tunnel vision url http menmedia.co.uk manchestereveningnews news s 1193083 manchesters tunnel vision publisher Manchester Evening News date 18 February 2010 accessdate 25 January 2011 ref Use as a telephoneexchange The tunnels are known to be used for British Telecom cables. The exchange rose to prominence in March 2004 when a fire in one of the tunnels caused 130,000 telephone lines in Manchester to be cut off. Ambulance and fire service calls around the North West region were also specifically affected. ref Cite web title Fire cuts off 130,000 phone lines url http news.bbc.co.uk 1 hi england manchester 3577799.stm publisher BBC News date 29 March 2004 accessdate 25 January 2011 ref See also Kingsway telephoneexchange Kingsway exchange London Anchor Exchange References reflist External links http www.mancubist.co.uk 2006 07 25 guardian exchange manchesters cold war bunkers Blog report on Guardian Exchange Manchester s Cold War bunkers http www.youtube.com watch?v Jl 4untEWg0&feature related Video tour of the vast tunnels and shafts on YouTube http www.atomica.co.uk guardian Additional information and photos Manchester BT Group coord ... more details
File 365 secret nuclear bunker, anchor ventilation shaft.jpg thumb right Ventilation shaft, seen from Canterbury House Anchor Exchange was an underground, hardened telephone exchange built in Birmingham , England in the 1950s. It is located nominally on Newhall St. It was built together with the Guardian Exchange in Manchester and the Kingsway Exchange in London to provide hardened communications in the event of Nuclear warfare nuclear war . In common with most civil defence structures of the time it was designed to withstand atomic bomb s, although would not have survived a direct hit. It takes its name from Birmingham s hallmark , which depicts an anchor . References cite web url http www.subbrit.org.uk rsg sites b birmingham anchor exchange index.html title Birmingham Anchor Telephone Exchange last Ballard first Sebastian date 2003 03 19 work Subterranea Britannica accessdate 2008 12 02 BirminghamBuildings BT Group coord 52.4829 1.9042 type landmark region GB BIR display title Category Buildings and structures in Birmingham, West Midlands Category British Telecom buildings and structures Category Subterranea geography Category Nuclear bunkers Category Telephone exchange buildings WestMidlands struct stub ... more details
distinguish Kingsway tramway subway Kingsway telephoneexchange was a Cold War era hardened telephoneexchange underneath High Holborn in London . History The Kingsway telephoneexchange was built as a London deep level shelters deep level shelter underneath Chancery Lane tube station in the early 1940s. Although intended for use as an air raid shelter , like many of the deep level shelters it was not used for its intended purpose and was instead used as a government communications centre. The site was given to the General Post Office United Kingdom General Post Office GPO in 1949. At the time, the Post Office was also responsible for telephones as well as postal system. The two tunnel shelter was extended by the addition of four tunnels at right angles to the originals. It was completed by 1954, and in 1956 it became the termination point for the first transatlantic telephone cable TAT 1 TAT1 . Throughout the 1960s, 1970s and early 1980s, Kingsway Trunk Switching Centre as it became known was a trunk switching centre and repeater station with Post Office engineering staff totalling over 200 at its peak. Also located on site was the Radio Interference Investigation Group, whose function was to prevent television viewers and radio listeners in north and central London from suffering interference to their service from external sources such as thermostats, fluorescent tubes and injection moulding equipment. The country s first Radiopaging terminal was also installed on this site ... ref Entrances Kingsway TelephoneExchange had three entrances. One still existing is next to a shopfront ... telephoneexchange Guardian Exchange Manchester Anchor Exchange Birmingham References references External links http www.subbrit.org.uk rsg sites k kingsway Subterranea Britannica on Kingsway TelephoneExchange http www.abc.net.au news stories 2008 10 18 2394715.htm ABC News Australia article http ... Category Telephoneexchange buildings Category History of Camden ... more details
in exchange names resulted in the placement of letters on the telephone dial, even outside ..., telephoneexchange names were still be given out with telephone numbers well after the introduction ... Privateline.com Telephone History EXchange Names http www.ourwebhome.com TENP TENproject.html TelephoneEXchange Name Project http www.ourwebhome.com TENP Recommended.html Official listing of Ma Bell s recommended names http www.wifi forum.com wf showthread.php?t 5412 Old London TelephoneExchange ...During the early years of telephone service, communities that required more than 10,000 telephone number s, whether dial service was available or not, utilized exchange names to distinguish identical numerics ... to 1970 , in such multiple exchange communities, customers would normally dial the first two or three letters of the exchange name, followed by the numeric digits. Exchange name formatting in Europe ... telephone system , were Paris and London , which introduced it in 1922. Telephone directories showed the first three letters of the exchange in bold caps for example, a subscriber s number on London s Whitehall exchange was shown thus Whitehall 1212 WHI tehall 1212 the number of Scotland ... manual, and the subscriber s directory entry had the exchange name in caps but not bold. For example ... conversion of telephone numbers in Paris , in 1963, which until then had also used the 3L ... 508 , and PIGalle which was replaced by 744 . Exchange name formatting in the United States The United ... and five digits for example a number on the Pennsylvania exchange would be shown as PEnnsylvania ... 1960s, though it did not become universal until the 1980s. The standard format for displaying telephone numbers that used exchange names was to capitalize the first few letters if they were dialed. Some ... urban North American before move to two digit exchange names MArket 7032 typical urban North ... only the first letter of each part of the exchange name e.g., Metcalfe 6000 or Fairmont 3335 ... more details
No footnotes date March 2011 The Highgate Wood TelephoneExchange was a telephoneexchange built in the London suburb of Highgate Wood . It was the site of a trial for an electronic telephoneexchange ... manufacturers who had helped to build it, the first all electronic telephoneexchange in Britain ... telephone system director exchange in the existing director network, and no attempt had been made ... Broadhurst, S.W., The Highgate Wood Electronic TelephoneExchange , The Post Office Electrical Engineers ... Avenue, off Muswell Hill Rd please confirm Use dmy dates date February 2011 Category Telephoneexchange ... of Associated Electrical Industries Ltd British Thomson Houston AEI , Automatic Telephone & Electric ... Image Higate Wood Exchange 1.JPG thumb 200px right Mr. Derek David George Baker of AT&E writes information to the magnetic drum On Wednesday, 12 December, 1962, the 800 line Highgate Wood exchange was accepted ... Buzzard, the other two being quickly abandoned. The Highgate Wood Electronic Exchange had been ... British manufacturers of exchange equipment JERC . Although different contractors had been responsible for the system design, installation and manufacturing of various sections of the exchange ... Wood Exchange was not entirely typical of the systems which were to follow it. Each of the three new exchanges, all of which were to operate completely on their own, with no stand by exchange ... noisy on the long cable runs in an actual exchange. The problem was thought to be the earthing arrangements. TDM exchange operation in the UK did not become possible until pulse code modulation PCM was developed, providing a digital transmission solution which led to System X telephony System X . Exchange Design Image Higate Wood Exchange 2.JPG thumb 200px right Technical Officer Mr. A. L. Ellis ... an electronic exchange using the Switched Highways system, which employed time division multiplex ... provide the full service and maintenance facilities of a comparable electro mechanical exchange. At the same ... more details
The AXE telephoneexchange is a product line of circuit switching circuit switched digital telephoneexchange s manufactured by Ericsson , a Swedish telecom company. It was developed in 1974 by Ellemtel , a research and development subsidiary of Ericsson and Televerket Sweden Televerket . ref cite web url http www.ericssonhistory.com templates Ericsson Article.aspx?id 2057&ArticleID 1858&CatID 354&epslanguage EN title Ellemtel develops the AXE system publisher History of Ericsson ref The first system was deployed in 1976. AXE is an acronym for Automatic Cross Connection Equipment . The AXE is the digital successor to the AKE analogue telephoneexchange and ARF ARM family of crossbar switch es. The design is modular with an APZ dual processor running in sync mode, an APT switching part and an APG I O part. It is used for connecting local landline s, operate mobile networks Digital AMPS TDMA , GSM , Code division multiple access CDMA , W CDMA , Personal Digital Cellular PDC , international telephony traffic and signaling. AXE based equipment are being used as BSC TRC, MSC, HLR, SCP, FNR, TSC and wireline nodes. The brain of the AXE system is a dual processor system called APZ. It runs in Lockstep computing parallel sync mode making it fault redundant. The family of APZs started with APZ 210 03 in 1976 the latest one is APZ 212 60. The Lockstep computing parallel sync mode was partly abandoned in the APZ 212 40 and subsequent models and has been replaced with a warm standby scheme. The latest APZ type is 214 03 which is use as MSC, TSC and HLR Blade in AXE. The latest implementation ... 1E2D 4CAF 9782 1F545C2D2F8F&category Operators Ericsson AXE web page DEFAULTSORT Axe TelephoneExchange Category Telephoneexchange equipment Category Ericsson telecomm stub pl AXE sv AXE .... Ericsson AXE telephone exchanges support Lawful interception lawful intercepts via the remote ... Modules is written in ASA210R. See also System Y UK term for the AXE10 Greek telephone tapping ... more details
Infobox NRHP name Webster TelephoneExchange Building nrhp type image P3160007.JPG caption The Webster TelephoneExchange Building, the home of the Great Plains Black History Museum. location Omaha, Nebraska lat degrees 41 lat minutes 16 lat seconds 52.51 lat direction N long degrees 95 long minutes 56 long seconds 43.55 long direction W locmapin Nebraska area built 1907 architect Kimball,Thomas R. architecture Tudor Revival, Other added December 5, 1977 governing body Private refnum 77000829 ref name nris NRISref 2007a ref The Webster TelephoneExchange Building is located at 2213 Lake Street in North Omaha, Nebraska . It was designed by the well known Omaha architect Thomas R. Kimball. After the Easter Sunday Tornado of 1913, the building was used as the center of recovery operations. In 1933 American Bell donated the building to the Urban League . The 33 room building is closely associated with Omaha s black history, serving as a home to Omaha s Urban League and its leader Whitney Young . ref Curtis, N.C. 1996 Black Heritage Sites An African American Odyssey and Finder s Guide. ALA Editions. p 498. ref In 1976 it was converted for use as the Great Plains Black History Museum . The building was listed on the National Register of Historic Places in 1977 and also designated a landmark by the City of Omaha. ref http www.ci.omaha.ne.us landmarks designated landmarks landmarks 45 Default.htm Webster TelephoneExchange Building . City of Omaha Landmark Heritage Preservation Commission. Retrieved 8 15 07. ref History The Webster TelephoneExchange building was built in 1906. It is a modified Tudor style building designed by the famed architect Thomas Kimball for the Nebraska Telephone Company . The building was a central headquarters for recovery operations after the Easter Sunday Tornado of 1913. Telephone operators stayed at their stations during the tornado, and despite ... Places in Omaha, Nebraska Category Thomas Rogers Kimball buildings Category Telephoneexchange ... more details
The Lisburn telephoneexchange code refers to the former 01846 area code, which until the 2000 Big Number Change , served Lisburn , Aghalee , Moira, County Down Moira , Hillsborough, County Down Hillsborough , Dromore, County Down Dromore , Maze, County Down Maze , Stoneyford and Baillies Mills, all of which are in Northern Ireland , a constituent part of the United Kingdom . This area gained 92 and changed to eight digit numbers, under the new 028 area code. Before STD Before STD Subscriber Trunk Dialling codes were introduced in Northern Ireland, during the 1960s and 1970s, an operator based system was in operation. Each subscriber had short usually 3 or 4 digit number within the local exchange. For example, the post office in Dromore, County Down Dromore was Dromore 201 . ref Dromore Leader accessdate 2007 12 01 ref 0846 and 08462 When STD was introduced to the area in the early 1970s, the local towns and villages around Lisburn all scrapped their three digit numbers with the exception of Stoneyford and added an extra three digits. These towns used 0846 six digits. Moira, County Down Moira took 611 , therefore Moira 369 became 611369 . Maze, County Down Maze took 621 , therefore Maze 249 became 621249 . Baillies Mills took 638 , therefore Baillies Mills 775 became 638775 . Aghalee took 651 , therefore Aghalee 276 became 651276 . Hillsborough, County Down Hillsborough took 682 ... DEFAULTSORT Lisburn TelephoneExchange Code Category Telephone numbers in the United Kingdom ... exchange affected in the 0846 area was Stoneyford. It had 3 and 4 digit numbers and used the area ... the inclusion of 92 irrespective of whether the number was your exchange or not. However it did omit the need to include the area code when calling other areas of the province. ref Telephone numbering ... codes in the United Kingdom Telecommunications in the United Kingdom Telephone numbering plan Lisburn ... telecoms numbering numplan201210.pdf UK National Telephone Numbering Plan in PDF format http stakeholders.ofcom.org.uk ... more details
Infobox nrhp name TelephoneExchange Building nrhp type image caption location 23 Union Street, Norwich, Connecticut lat degrees 41 lat minutes 31 lat seconds 37 lat direction N long degrees 72 long minutes 5 long seconds 11 long direction W coord display inline,title locmapin Connecticut built 1906 architect Williams,Morgan architecture Colonial Revival added November 28, 1983 area convert 0.2 acre governing body Private refnum 83003590 ref name nris NRISref 2009a ref TelephoneExchange Building is a historic building at 23 Union Street in Norwich, Connecticut . The building was built in 1906 and added to the National Register of Historic Places on November 28, 1983. The building is part of the Downtown Norwich Historic District . See also National Register of Historic Places listings in New London County, Connecticut References reflist National Register of Historic Places Category Industrial buildings and structures on the National Register of Historic Places in Connecticut Category Buildings and structures completed in 1906 Category Colonial Revival architecture in Connecticut Category Buildings and structures in New London County, Connecticut Category Telephoneexchange buildings Category Telecommunications buildings on the National Register of Historic Places Connecticut NRHP stub ... more details
The Basic ExchangeTelephone Radio Service or BETRS is a fixed radio service where a multiplexing multiplexed , digital radio link is used as the last segment of the local loop to provide wireless telephone service to subscribers in remote areas. BETRS technology was developed in the mid 1980s and allows up to four subscribers to use a single radio channel communications channel pair, Simultaneity simultaneous ly, without Interference communication interfering with one another. In the United States U.S. , this service may operate in the paired 152 158 and 454 459 Megahertz MHz bands and on 10 channel block s in the 816 820 861 865 MHz bands. BETRS may be licensed only to U.S. state state certified carriers in the area where the service is provided and is considered a part of the public switched telephone network PSTN by state regulators. Regulation of this service currently resides in parts 1 and 22 of the Code of Federal Regulations CFR , Subtitle 47 on Telecommunications , and may be researched or ordered through the Government Printing Office GPO . Source Federal Communications Commission Wireless Bureau External links http www.fcc.gov Federal Communications Commission website http www.gpo.gov Government Printing Office website Category Local loop Category Mobile telecommunications standards ... more details
Menotti operas The Telephone, or L Amour trois is an English language comic opera in one act by Gian Carlo Menotti , both words and music. It was written for production by the Ballet Society and was first presented on a double bill with Menotti s The Medium at the Heckscher Theater, New York City, February 18 20, 1947. The Broadway theatre Broadway production took place on May 1, 1947, at the Ethel Barrymore Theatre . The Metropolitan Opera presented it once, on July 31, 1965. ref http www.ibdb.com production.asp?ID 1549 Internet Broadway Database The Telephone The Medium Production Credits Bot generated title ref Roles class wikitable Role Voice type Premiere Cast, February 18, 1947 br Conductor Jascha Zayde Lucy coloratura soprano Marilyn Cotlow Ben baritone Frank Rogier Synopsis Ben, bearing a gift, comes to visit Lucy at her apartment he wants to propose to her before he leaves on a trip. Despite his attempts to get her attention for sufficient time to ask his question, Lucy is occupied with interminable conversations on the telephone. Between her calls, when Lucy leaves the room, Ben even tries to cut the telephone cord unsuccessfully. Not wanting to miss his train, Ben leaves without asking Lucy for her hand in marriage. But Ben makes one last attempt He calls Lucy from a telephone booth outside on the street and makes his proposal. She consents, and the two join in a romantic duet over the phone line, at the end of which Lucy makes sure that Ben remembers her phone number. Recordings Film and video In 1968 a film of the opera was made for SFB ORF , in German. Anja Silja ... a performance of Francis Poulenc s La voix humaine , whose story also contains a telephone conversation. References reflist DEFAULTSORT Telephone, The Category Operas by Gian Carlo Menotti Category ... century operas Category Chamber operas de Das Telefon oder Die Liebe zu dritt es The Telephone, or L Amour trois it The Telephone, or L Amour trois pt The Telephone fi Puhelin ooppera ... more details
Wiktionary exchangeExchange may refer to Finance and Commerce Exchange of goods and services, or trade Exchange between a buyer and seller, a financial transaction Exchange organized market , where securities are sold and bought Communications and Technology Microsoft Exchange Server , an email and collaboration server Telephoneexchange , a system that connects telephone calls Internet exchange point IX , physical infrastructure connecting Internet service providers networks exchange of ideas, done through conversation Music Exchange album Exchange album , a 1999 split EP by the punk bands Against All Authority and The Criminals Exchange or Exchange , two songs on Massive Attack s Mezzanine album Mezzanine album Lindy exchange , a gathering of lindy hop dancers Appropriate article needed for In science Mathematics Structural rule or Exchange rule, from mathematical logic Places Exchange, Indiana Exchange, West Virginia Liverpool Exchange UK Parliament constituency Manchester Exchange UK Parliament constituency Other uses Student exchange program , in which a student chooses to live in a foreign country Exchange chess , closely related or sequential captures of pieces of both players in a chess game Exchange formerly known as Army & Air Force Exchange Service, or AAFES See also X Change disambiguation Heat exchange disambiguation The Exchange disambiguation Change disambiguation Microsoft Exchange Client , software embedded into some versions of Microsoft Windows Placed under see also because it was called Exchange Client , never Exchange Social exchange theory , a theory in social psychology and sociology disambiguation it Scambio disambigua hu Exchange egy rtelm s t lap ur zh ... more details
The Exchange may refer to The Exchange Canada , an interbank ATM network The exchange chess , an occurrence in the game of chess The Exchange, Bristol , a historic building The Exchange film The Exchange film , a 2011 Israeli film Exchange Arcade , the commercial section of the Nottingham Council House The Exchange , a non fiction book by Allan Levine The Exchange studio , a recording studio where several Depeche Mode albums, including Ultra Depeche Mode album Ultra , were recorded The Exchange, a building project in Croydon , a neighborhood in south London The Exchange, a shopping mall owned by CapitaLand in Tianjin, China The Exchange, a sister venue of the Hazlitt Theatre in Kent, England See also Exchange disambiguation disambig ... more details
. Later in 1878 the Bell System Bell Telephone Company began to use two wire circuits called the local loop from each user s telephone to Telephoneexchange end office s which performed any necessary ... telephone line run from a home or other small building to a local telephoneexchange . There is a central junction box for the building where the wires that go to telephone jacks throughout the building and wires that go to the exchange meet and can be connected in different configurations depending upon the subscribed telephone service. The wires between the junction box and the exchange are known as the local loop , and the network of wires going to an exchange, the access network . Most houses ... to two telephone lines at the local telephoneexchange , thus making those jacks RJ11, RJ14, RJ25 RJ14 jacks. More often, only two of the wires are connected to the exchange as one telephone line ...For the Electric Light Orchestra song Telephone Line Electric Light Orchestra song globalize USA date December 2010 unreferenced date January 2008 Image Phone pole3.jpg thumb right Phone pole with phone and mainly electric lines File Fixed telephone lines per 100 inhabitants 1997 2007 ITU.png thumb Fixed telephone lines per 100 inhabitants 1997 2007 A telephone line or telephone circuit or just line or circuit Jargon within the industry is a single user telecommunication circuit circuit on a telephone ... medium connecting the user s telephone apparatus to the telecommunications network, and usually also implies a single telephone number for invoice billing purposes reserved for that user. In 1876 the earliest lines were single electrically conducting metal wires directly connecting one telephone ... cables. Modern lines may run underground, and may carry analog or digital signals to the exchange ... english telematics telephone line.html Engineer Francesco Buffa s page about telephone line Is BS 6312 used in the UK ? DEFAULTSORT Telephone Line Category Local loop ar ca ... more details
A telephone network is a telecommunications network used for telephone call s between two or more parties. There are a number of different types of telephone network A fixed line network where the telephones must be directly wired into a single telephoneexchange . This is known as the public switched telephone network or PSTN. A wireless network where the telephones are mobile phone mobile and can move around anywhere within the cellular network coverage area . A private network where a closed group of telephones are connected primarily to each other and use a gateway to reach the outside world. This is usually used inside Company companies and call centre s and is called a private branch exchange PBX . Public telephone operator s PTOs own and build networks of the first two types and provide services to the public under license from the national government. Mobile Virtual Network Operator Virtual Network Operators VNOs lease capacity wholesale from the PTOs and sell on telephony service to the public directly. Category Telecommunications infrastructure bg cs Telefonn s ... more details
Unreferenced date December 2009 A telephone prefix is the first set of digits of a telephone number in the North American Numbering Plan countries country code 1 , it is the first three digits out of a seven digit phone number. It shows which telephoneexchangeexchange the remaining numbers refer to. Some places restrict certain prefixes to only fax numbers or for mobile phone cell phone s while in other places the prefixes are random. Most but not all area codes reserve the prefix 555 telephone number 555 for special uses 555 1212 is telephone information in most area codes. For this reason, it is often used for phone numbers in television and movies. Failure to do so can cause a number of problems, as occurred with the release of the song 867 5309 Jenny causing hundreds of calls to the various people and organizations all over the U.S. that had that phone number. The film Bruce Almighty resulted in someone s real phone number being used, eventually leading to a lawsuit. See also Telephone numbering plan List of international call prefixes List of country calling codes DEFAULTSORT Telephone Prefix Category Telephone numbers eo Telefonprefikso hu K rzeth v sz m ... more details
File Bell Edison Telephone Building.jpg thumb 340px The Edison Bell Telephone Company building of 1896 in Birmingham , England A telephone company also known as a telco , telecommunications operator , communications service provider , or CSP is a service provider of telecommunications services such as telephony and data communication s access. Many were at one time nationalized or state regulated monopoly monopolies . These monopolies are often referred to, primarily in Europe, as Postal Telegraph and Telephone s PTTs . Telephone companies are common carrier s, and in the United States are also called local exchange carrier s. With the advent of mobile telephony , telephone companies now include wireless carrier s, or mobile network operator s. Most telephone companies now also function as internet service provider s ISPs , and the distinction between a telephone company and an ISP may disappear completely over time, as the current trend for supplier convergence in the industry continues. Popular culture Comedian Lily Tomlin frequently satirized the telephone industry and the country s then dominant Bell System in particular with a sketch comedy skit playing the telephone operator Ernestine. Ernestine, who became one of Tomlin s trademark characters, was perhaps most famous for the following line We don t care we don t have to. We re the phone company. In the satirical 1967 film ... landline s with mobile phone s. See also colbegin 2 Bell Telephone Company , forerunner of AT&T in the U.S. Internet telephony service provider Competitive local exchange carrier in the U.S. Communications service provider History of the telephone Incumbent local exchange carrier of the Bell System List of telephone operating companies List of mobile network operators Mobile network operator Public switched telephone network Telecommunications Industry Association for the development of U.S. ... Telephone Company Category Telecommunications companies Category Public utilities ar da ... more details
Image Israeli telephon token.jpg right thumb An Israeli telephone token, or asimon , used until the late 1980s File JetonKZ.jpg thumb right 123 px Telephone token used in Kazakhstan Telephone tokens were once widespread medium of exchange for people wanting to talk on public phone s with someone before there were telephone card s to collect and use. These tokens were once widely used in Europe , Israel , Japan , and South America , and are still used today in Turkey . Phone tokens started in Chicago , where public phones would accept only tokens. These were used in the U.S. until 1944 when they were eliminated and most of the tokens were melted down to make shell casings. The earliest known telephone token dates from 1885, when it was produced for the PAN Telephone Company in Saint Louis, Missouri. Rather than being deposited in the phone, the token was given to an attendant or placed in a coin box to gain access to the phone booth. This practice of using tokens and allowing their specific value to float with the going rate for a phone call eventually became the standard world wide practice. This came in especially handy in European countries where currencies changed once you crossed borders, but a token could still be useful. In some countries, such as Italy, they were even used informally as cash equivalents. See also Gettone Gettone telefonico Telephone card References Commonscat Telephone tokens Groenendijk, Henk A. A Catalog of Telephone and Telegraph Tokens of the World . Leiden 1989. Targonsky, Paul A Catalogue of Telephone Tokens of the World . Published by the author. Meriden, Conn., 1968 Category Telephone services Category Telecommunications economics he pt Ficha de telefone de Telefonmarke it Gettone telefonico ... more details
receiver, but does not exploit it. 1875 Hungarian Tivadar Puskas the inventor of telephoneexchange ... from the telephoneexchange over the same wires that carried the voice signals. Late in the century ... on the line and to alert the exchange operator. In 1877 and 1878, Thomas Edison Carbon telephone ... exchange Push button telephoneTelephoneexchange Thomas Edison Carbon telephone transmitter Thomas ... speak into and then listen through the same hole. File Telephone Centennial Issue 1976 13c.jpg thumb right 240px center Bell s Prototype Telephone center center Centennial Issue of 1976 center This history of the telephone timeline of the telephone chronicles the development of the telephone electrical telephone , and includes a brief review of its earlier predecessors. Telephone prehistory ... s telephone A different device, the tin can telephone , or lover s phone , has also been known for centuries ... The telephone emerged from the creation of, and successive improvements to the electrical telegraph ... to the invention of the telephone, or the speaking telegraph . Invention of the telephone main Invention of the telephone Credit for the invention of the electric telephone is frequently disputed ... credited with the telephone s invention. The early history of the telephone became and still remains ... and Edison patents, however, were commercially decisive, because they dominated telephone technology ... Meucci , 1854, constructed telephone like devices. Image JPReis.jpg Johann Philipp Reis , 1860, constructed ... Bell.jpg Alexander Graham Bell was awarded the first U.S. patent for the invention of the telephone in 1876. Image Portrait elisha gray.jpg Elisha Gray , 1876, designed a telephone using a water microphone in Highland Park, Illinois. Image Tivadar Puskas.jpg Tivadar Pusk s invented the telephoneexchangetelephone switchboard exchange in 1876. Image Thomas Edison, 1878.jpg Thomas Edison , invented the carbon microphone which produced a strong telephone signal. gallery center Alexander Graham Bell ... more details
Infobox Company company name K.L.M. Telephone Company company logo company type Private company Private ... employees products Telephone Local Telephone Service parent RBJ Corp. RBJ 1992 2007 br American Broadband 2007 present revenue homepage http www.klmtel.net K.L.M. Telephone Company is a rural telecommunications provider based in Rich Hill, Missouri . Consisting mainly of small, rural, family run telephone companies it absorbed, it provides local telephone service to 1400 southwest Missouri telephone ... , and Richards, Missouri Richards ref http www.telcodata.us search area code exchange by company state?company K 20L 20M 20TELEPHONE 20COMPANY&state MO Telcodata.us, K L M Telephone Company, Accessed April 27, 2012 ref . It is owned by American Broadband . History Formation & Expansion KLM Telephone Company began in 1955 as a business investment by Ken Kern . He purchased the Rich Hill Telephone ... James Lamble later joined. Rich Hill Telephone Company was then renamed KLM Telephone Company , representing Kern Lamble Mauser. The partners formed a holding company for the telephone company ..., MO , near Richards, MO , was still a mutual exchange in 1971 with magneto service. Some customers within the area petitioned the Missouri Public Service Commission for Bell System Bell telephone service because they wanted dial telephone service. Mr. Kern made arrangements to rent some Stromberg ... within six months. Missouri Union Telephone Company, Deerfield s service provider, was merged into the KLM Telephone Company in 1973. By 1975, KLM Telephone Company consisted of the merged operations of the following acquired telephone companies family run operations Rich Hill Telephone Company 1955 Papinville, MO telephone operations 1956 Metz, MO and Richards, MO telephone exchanges 1959 managed as a separate partnership, Missouri Union Telephone Company Missouri Union Telephone Company, fully ... 23, 1992 ref http web.archive.org web 20090430075747 http www.klmtel.net history.htm History, KLM Telephone ... more details
An extension telephone is an additional telephone wired to the same telephone line as another. In middle 20th century telephone jargon, the first telephone on a line was a Main Station and subsequent ones Extensions . Such extension phones allow making or receiving calls in different rooms, for example in a home. Some telephones intended for use as extensions have built in intercom features. A telephone extension is an internal telephone line attached to a Private branch exchange PBX or Centrex system. The PBX operates much as a community switchboard does for a geographic telephone numbering plan and allows multiple lines inside the office to connect without each phone requiring a separate outside line. In these systems, a dialer usually has to dial a number typically 9 in North America, 0 in Europe to tell the PBX to connect with a landline also called DDCO, or em Direct Dial Central Office em to dial an external number. Within the PBX, the user merely dials the extension number of the person. Each phone line may be extended up to a fixed maximum. Reasons to use extensions Since not all users dial out at the same time, sharing trunking trunk lines is cheaper than giving each phone its own private landline. ref Newton, H Newton s telecom dictionary , page 901. CMP books, 2004 ref Extension to extension calls can be made and kept within the company for security reasons. Extensions make it easier for workers to bring their telephone number with them if they change offices in the building. Extensions allow personalized traffic and Call accounting data to be captured by the PBX or a phone recorder to be used to optimize resources. ref http www.versadial.com call recording terms.html extension Extension Call recording terms ref References references Category Telephony equipment Category Local loop de Nebenstelle nl Doorkiesnummer pt Ramal telefonia ... more details
Articles on Public telephone include Telephones Callbox Courtesy telephone Emergency telephone Payphone Police box Red telephone box Telephone booth Film Public Telephone film Public Telephone film , a 1980 French documentary film disambig ... more details
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