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Tripolar Plug
{{Unreferenced, date=May 2019, bot=noref (GreenC bot) The telefonic tripolar plug is the first type of telephone plug used in Italy. It has also been used in Finland, Norway and Turkey in older installations. Structure It uses three pins: the two on the top are joined with the twisted pair of cables bringing the signal; the third, off-center, can be used for loop through when more sockets exist. In Finland, the third pin is earth ground, but it is rarely connected. Every socket complies with Italian standards. Formerly each of them was installed by SIP, now TIM, and had their trademark. Sockets without trademark exist also. Since 2007, TIM no longer installs tripolar sockets in new electrical wiring systems. In Finland, five-pin variant with second line also exists. Three-pin plug is compatible with five-pin socket. Use The tripolar plug has been supplanted by the international RJ11 standard, both because it is more diffused in new technology devices and because the tripolar pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telephone Plug
A telephone jack and a telephone plug are electrical connectors for connecting a telephone set or other telecommunications apparatus to the telephone wiring inside a building, establishing a connection to a telephone network. The plug is inserted into its counterpart, the jack, which is commonly affixed to a wall or baseboard. The standards for telephone jacks and plugs vary from country to country, though the 6P2C style modular plug has become by far the most common type. A connection standard, such as RJ11, specifies not only the physical aspects of an electrical connector, but also the signal definitions for each contact, and the pinout of the device, i.e. the assignment or function of each contact. Modular connectors are specified for the registered jack (RJ) series of connectors, as well as for Ethernet and other connectors, such as 4P4C (4 position, 4 contacts) modular connectors, the de facto standard on handset cords, often improperly referred to as ''RJ connectors''. Hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italy
Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical region. Italy is also considered part of Western Europe, and shares land borders with France, Switzerland, Austria, Slovenia and the enclaved microstates of Vatican City and San Marino. It has a territorial exclave in Switzerland, Campione. Italy covers an area of , with a population of over 60 million. It is the third-most populous member state of the European Union, the sixth-most populous country in Europe, and the tenth-largest country in the continent by land area. Italy's capital and largest city is Rome. Italy was the native place of many civilizations such as the Italic peoples and the Etruscans, while due to its central geographic location in Southern Europe and the Mediterranean, the country has also historically been home ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telecommunications In Finland
Finland has excellent communications, and is considered one of the most advanced information societies in the world. Telephones Telephones – main lines in use: 2.368 million (2004) Telephones – mobile cellular: 4.988 million (2004) Telephone system: General Assessment: Modern system with excellent service. Domestic: Digital fiber-optic fixed-line network and an extensive cellular network provide domestic needs. There are three major cellular network providers with independent networks (Elisa Oyj, Telia Finland and DNA Oyj). There are several smaller providers which may have independent networks in smaller areas, but are generally dependent on rented networks. There is a great variety of cellular providers and contracts, and competition is particularly fierce. International: Country code – 358; 2 submarine cable (Finland-Estonia and Finland-Sweden Connection); satellite earth stations – access to Intelsat transmission service via a Swedish satellite ear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telecommunications In Norway
Telecommunications in Norway are relatively advanced. There are about as many cellular phone subscription as there are inhabitants in the country (5.3 million), while the number of fixed line telephone subscriptions is declining towards 800,000. As of 2006, 79% of the population had access to internet at home, rising to 95% by 2012."Percentage of Individuals using the Internet 2000-2012" International Telecommunication Union (Geneva), June 2013 Norway was the first non-English-speaking country on the . In 1971 |
Telecommunications In Turkey
Telecommunications in Turkey provides information about television, radio, fixed and mobile telephones, and the Internet in Turkey. Telecommunications liberalisation The telecommunications liberalisation process started in Turkey in 2004 after the creation of the Telecommunication Authority, and is still ongoing as of May 2013. Private sector companies operate in mobile telephony, long distance telephony and Internet access. There were 12.3 million (12.300.390) fixed phone lines, 82.2 million (82.795.432) mobile phone subscribers, and 80.9 million broadband subscribers (10.6 million xDSL, 3.8 million Fibre, 1.2 million Cable, 65 million Mobile) by Q3 2020. Telecommunications liberalisation in Turkey is progressing, but at a slow pace. The Telecommunication Authority (now renamed Bilgi İletişim ve Teknolojileri Kurumu or BTK), while technically an independent organization, is still controlled by the Ministry of Transport and Communications. While progress is being made ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twisted Pair
Twisted pair cabling is a type of wiring used for communications in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility. Compared to a single conductor or an untwisted balanced pair, a twisted pair reduces electromagnetic radiation from the pair and crosstalk between neighboring pairs and improves rejection of external electromagnetic interference. It was invented by Alexander Graham Bell. For additional noise immunity, twisted-pair cabling may be shielded. Cable with shielding is known as shielded twisted pair (STP) and without as unshielded twisted pair (UTP). Explanation A twisted pair can be used as a balanced line, which as part of a balanced circuit can greatly reduce the effect of noise currents induced on the line by coupling of electric or magnetic fields. The idea is that the currents induced in each of the two wires are very nearly equal. The twisting ensures that the two wires are on ave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telecom Italia
Gruppo TIM, legally TIM S.p.A. (formerly Telecom Italia S.p.A.), also known as the TIM Group in English, is an Italian telecommunications company with headquarters in Rome, Milan, and Naples, (with the Telecom Italia Tower) which provides fixed telephony and DSL data services. It is the largest Italian telecommunications services provider in revenues and subscribers. It was founded in 1994 by the merger of several state-owned telecommunications companies, the most prominent of which was Società Italiana per l'Esercizio Telefonico p.A., (known as ''SIP''), the former state monopoly telephone operator in Italy. The company's stock is traded in the Borsa Italiana. Since 2017, the Italian State exercises on TIM the "Golden Power", which allows the government to take a number of actions when the strategic interests of the country are concerned. History 1925–1964: Stipel and early mandatory phone tax In 1925, the phone network was reorganised by the Benito Mussolini cabinet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RJ11
A registered jack (RJ) is a standardized telecommunication network interface for connecting voice and data equipment to a service provided by a local exchange carrier or long distance carrier. Registration interfaces were first defined in the ''Universal Service Ordering Code'' (USOC) system of the Bell System in the United States for complying with the registration program for customer-supplied telephone equipment mandated by the Federal Communications Commission (FCC) in the 1970s. They were subsequently codified in title 47 of the Code of Federal Regulations Part 68. Registered jack connections began to see use after their invention in 1973 by Bell Labs. The specification includes physical construction, wiring, and signal semantics. Accordingly, registered jacks are primarily named by the letters ''RJ'', followed by two digits that express the type. Additional letter suffixes indicate minor variations. For example, RJ11, RJ14, and RJ25 are the most commonly used interfaces f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISDN
Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the digitalised circuits of the public switched telephone network. Work on the standard began in 1980 at Bell Labs and was formally standardized in 1988 in the CCITT "Red Book". By the time the standard was released, newer networking systems with much greater speeds were available, and ISDN saw relatively little uptake in the wider market. One estimate suggests ISDN use peaked at a worldwide total of 25 million subscribers at a time when 1.3 billion analog lines were in use. ISDN has largely been replaced with digital subscriber line (DSL) systems of much higher performance. Prior to ISDN, the telephone system consisted of digital links like T1/ E1 on the long-distance lines between telephone company offices and analog signals on copper telephone wires to the customers, the " last mile". At the time, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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