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History Of Telecommunications In The United Kingdom
Telecommunications in the United Kingdom have evolved from the early days of the telegraph to modern broadband and mobile phone networks with Internet services. History National Telephone Company (NTC) was a British telephone company from 1881 until 1911 which brought together smaller local companies in the early years of the telephone. Under the Telephone Transfer Act 1911 it was taken over by the General Post Office (GPO) in 1912. Until 1982, the main civil telecommunications system in the UK was a state monopoly known (since reorganisation in 1969) as Post Office Telecommunications. Broadcasting of radio and television was a duopoly of the BBC and Independent Broadcasting Authority (IBA): these two organisations controlled all broadcast services, and directly owned and operated the broadcast transmitter sites. Mobile phone and Internet services did not then exist. The civil telecoms monopoly ended when Mercury Communications arrived in 1983. The Post Office system evolve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telegraph
Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas pigeon post is not. Ancient signalling systems, although sometimes quite extensive and sophisticated as in China, were generally not capable of transmitting arbitrary text messages. Possible messages were fixed and predetermined and such systems are thus not true telegraphs. The earliest true telegraph put into widespread use was the optical telegraph of Claude Chappe, invented in the late 18th century. The system was used extensively in France, and European nations occupied by France, during the Napoleonic era. The electric telegraph started to replace the optical telegraph in the mid-19th century. It was first taken up in Britain in the form of the Cooke and Wheatstone telegraph, initially used mostly as an aid to railway signalli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ofcom
The Office of Communications, commonly known as Ofcom, is the government-approved regulatory and competition authority for the broadcasting, telecommunications and postal industries of the United Kingdom. Ofcom has wide-ranging powers across the television, radio, telecoms and postal sectors. It has a statutory duty to represent the interests of citizens and consumers by promoting competition and protecting the public from harmful or offensive material. Some of the main areas Ofcom presides over are licensing, research, codes and policies, complaints, competition and protecting the radio spectrum from abuse (e.g., pirate radio stations). The regulator was initially established by the Office of Communications Act 2002 and received its full authority from the Communications Act 2003. History On , the Queen's Speech to the UK Parliament announced the creation of Ofcom. The new body, which was to replace several existing authorities, was conceived as a "super-regulator" to ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Communications Cable
A submarine communications cable is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean and sea. The first submarine communications cables laid beginning in the 1850s carried telegraphy traffic, establishing the first instant telecommunications links between continents, such as the first transatlantic telegraph cable which became operational on 16 August 1858. Subsequent generations of cables carried telephone traffic, then data communications traffic. Modern cables use optical fibre technology to carry digital data, which includes telephone, Internet and private data traffic. Modern cables are typically about in diameter and weigh around for the deep-sea sections which comprise the majority of the run, although larger and heavier cables are used for shallow-water sections near shore. Submarine cables first connected all the world's continents (except Antarctica) when Java was connected to Darwin, Northern Terri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bit Rate
In telecommunications and computing, bit rate (bitrate or as a variable ''R'') is the number of bits that are conveyed or processed per unit of time. The bit rate is expressed in the unit bit per second (symbol: bit/s), often in conjunction with an SI prefix such as kilo (1 kbit/s = 1,000 bit/s), mega (1 Mbit/s = 1,000 kbit/s), giga (1 Gbit/s = 1,000 Mbit/s) or tera (1 Tbit/s = 1,000 Gbit/s). The non-standard abbreviation bps is often used to replace the standard symbol bit/s, so that, for example, 1 Mbps is used to mean one million bits per second. In most computing and digital communication environments, one byte per second (symbol: B/s) corresponds to 8 bit/s. Prefixes When quantifying large or small bit rates, SI prefixes (also known as metric prefixes or decimal prefixes) are used, thus: Binary prefixes are sometimes used for bit rates. The International Standard ( IEC 80000-13) specifies diffe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mbit/s
In telecommunications, data-transfer rate is the average number of bits ( bitrate), characters or symbols ( baudrate), or data blocks per unit time passing through a communication link in a data-transmission system. Common data rate units are multiples of bits per second (bit/s) and bytes per second (B/s). For example, the data rates of modern residential high-speed Internet connections are commonly expressed in megabits per second (Mbit/s). Standards for unit symbols and prefixes Unit symbol The ISQ symbols for the bit and byte are ''bit'' and ''B'', respectively. In the context of data-rate units, one byte consists of 8 bits, and is synonymous with the unit octet. The abbreviation bps is often used to mean bit/s, so that when a ''1 Mbps'' connection is advertised, it usually means that the maximum achievable bandwidth is 1 Mbit/s (one million bits per second), which is 0.125 MB/s ( megabyte per second), or about 0.1192 MiB/s (mebibyte per second). The Inst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Telecom Microwave Network
The British Telecom microwave network was a network of point-to-point microwave radio links in the United Kingdom, operated at first by the General Post Office, and subsequently by its successor BT plc. From the late 1950s to the 1980s it provided a large part of BT's trunk communications capacity, and carried telephone, television and radar signals and digital data, both civil and military. Its use of line-of-sight microwave transmission was particularly important during the Cold War for its resilience against nuclear attack. It was rendered obsolete, at least for normal civilian purposes, by the installation of a national optical fibre communication network with considerably higher reliability and vastly greater capacity. BT remains one of the largest owners of transmission and microwave towers in the UK. The most famous of these is the BT Tower in London, which was the tallest building in the UK from its construction in the 1960s until the early 1980s, and a major node in the B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thus (company)
Thus was a telecommunications provider operating in the United Kingdom based in Glasgow, Scotland. The company was once listed on the London Stock Exchange and became a subsidiary of Cable & Wireless Worldwide (CWW). Following the acquisition of Cable & Wireless Worldwide by Vodafone in July 2012, the company was gradually integrated into Vodafone. This was completed on 1 April 2013. History The company was founded in 1994 as ''Scottish Power Telecommunications Holdings Ltd'' (trading as ''Scottish Telecom''), an offshoot of the energy company Scottish Power. In 1998 the company acquired Demon Internet. Rod Matthews, who had founded the business, remained as Chief Executive until 1999. On 4 October 1999 Scottish Telecom announced their new name "thus". A short while later in 1999, the newly named Thus PLC listed on the London Stock Exchange. In 2002 it was demerged from Scottish Power in a deal which effectively wiped out the majority of the company's debts, placing the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Easynet
Easynet was a managed services provider and delivered integrated networks, hosting and unified communications services to organisations globally. The company was later renamed Easynet Global Services, and a sister company, Easynet Connect, was founded in 2008 which focused on providing internet access connectivity to small-to-medium size companies in the UK. The company was headquartered in United Kingdom, and had offices throughout Europe, Asia Pacific, and the US. History Easynet was founded on 1 August 1994 by David Rowe (entrepreneur), David Rowe and Keith Teare, with the office based at 44-46 Whitfield Street, London. This was located above what would later become the UK's first internet café Cyberia, London, with Easynet supplying Cyberia's internet access. In March 1996 Easynet floated on the Alternative Investment Market (AIM) at 100 pence per share, thereby raising £2.6 million. Then in July 1996 Easynet acquired Pavilion, a small ISP with 1,600 subscribers, for � ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cable & Wireless Worldwide
Cable & Wireless Worldwide PLC (informally Cable & Wireless) was a British multinational telecommunications services company headquartered in Bracknell, United Kingdom. It was formed in 2010 by the split of Cable & Wireless plc into two companies, the other being Cable & Wireless Communications serving Central America and the Caribbean. Cable & Wireless Worldwide specialised in servicing large corporates, governments, carriers and resellers and its services included managed voice, data and IP based services. It had operations in Asia Pacific, Europe, India, the Middle East & Africa and North America. The company was bought by Vodafone in July 2012 and integrated into the business on 1 April 2013. History The company was formed on 26 March 2010, made up of the remaining business of Cable & Wireless plc following the demerger of the company's international division to form Cable & Wireless Communications. The split meant that the FTSE 100 Index temporarily held 101 firms, be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virgin Media
Virgin Media is a British telecommunications company which provides telephone, television and internet services in the United Kingdom. Its headquarters are at Green Park in Reading, England. It is owned by Virgin Media O2, a 50:50 joint venture between Liberty Global and Telefónica. Virgin Media owns and operates its own fibre-optic cable network in the United Kingdom, although in most areas optical fibre does not reach customer premises, instead going to a nearby street cabinet to provide a fibre to the cabinet service. As of 31 December 2012, it had a total of approximately 4.8 million cable customers, of whom around 3.79 million were supplied with its television services ( Virgin TV), around 4.2 million with broadband internet services and around 4.1 million with fixed-line telephony services. At the same date, it had around 3 million mobile telephony customers. Since the acquisition of Smallworld Cable in 2014, Virgin Media is the main cable provider in the UK, with t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Level 3 Communications
Level 3 Communications was an American multinational telecommunications and Internet service provider company headquartered in Broomfield, Colorado. It ultimately became a part of CenturyLink (now Lumen Technologies), where Level 3 President and CEO Jeff Storey was installed as Chief Operating Officer, becoming CEO of CenturyLink one year later in a prearranged succession plan. Level 3 operated a Tier 1 network. The company provided core transport, IP, voice, video, and content delivery for medium-to-large Internet carriers in North America, Latin America, Europe, and selected cities in Asia. Level 3 was also the largest competitive local exchange carrier (CLEC) and the 3rd largest provider of fiber-optic internet access (based on coverage) in the United States. On October 31, 2016, CenturyLink announced an agreement to acquire Level 3 Communications in a cash and stock transaction. Level 3 became part of CenturyLink on November 1, 2017. History 1985 to 2000 In 1985, Pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Data
Digital data, in information theory and information systems, is information represented as a string of discrete symbols each of which can take on one of only a finite number of values from some alphabet, such as letters or digits. An example is a text document, which consists of a string of alphanumeric characters . The most common form of digital data in modern information systems is '' binary data'', which is represented by a string of binary digits (bits) each of which can have one of two values, either 0 or 1. Digital data can be contrasted with ''analog data'', which is represented by a value from a continuous range of real numbers. Analog data is transmitted by an analog signal, which not only takes on continuous values, but can vary continuously with time, a continuous real-valued function of time. An example is the air pressure variation in a sound wave. The word ''digital'' comes from the same source as the words digit and ''digitus'' (the Latin word for '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
