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131-585: A February 2008 report by the BBC revealed that the Nigerian government assumed the transnational corporation did not improve performance of NITEL and therefore stopped privatization in favour of Transcorp . In 2015, the government eventually finalized a transaction that saw NITEL and Mtel's assets handed over to NATCOM. The deal was valued at $ 252 million. In November 2017, Nitel appointed Nate James as vice president of account management. During colonial rule and until 1985,

262-515: A broadband-internet connection. Umbrella cells are used to cover shadowed regions of smaller cells and to fill in gaps in coverage between those cells. Cell horizontal radius varies – depending on antenna height, antenna gain , and propagation conditions – from a couple of hundred meters to several tens of kilometers. The longest distance the GSM specification supports in practical use is 35 kilometres (22 mi). There are also several implementations of

393-546: A memorandum of understanding in Copenhagen to develop and deploy a common cellular telephone system across Europe, and EU rules were passed to make GSM a mandatory standard. The decision to develop a continental standard eventually resulted in a unified, open, standard-based network which was larger than that in the United States. In February 1987 Europe produced the first agreed GSM Technical Specification. Ministers from

524-435: A teleprinter was introduced. In the 1950s, planned investments were launched that included expanding automatic telephone exchanges and trunk circuits , launching a Lagos to Port Harcourt microwave radio transmission route and introducing V.H.F . multi-channel radio transmission to more cities and towns. In 1961, they were more than 32,000 telephones line and 120 telephone exchanges. Investments in telecommunications moved

655-693: A censorship apparatus for the inevitability of war. Due to the BBC's advancements in shortwave radio technology, the corporation could broadcast across the world during the Second World War. Within Europe, the BBC European Service would gather intelligence and information regarding the current events of the war in English. Regional BBC workers, based on their regional geo-political climate, would then further censor

786-642: A generic term for the plethora of G mobile phone technologies evolved from it. In 1983, work began to develop a European standard for digital cellular voice telecommunications when the European Conference of Postal and Telecommunications Administrations (CEPT) set up the Groupe Spécial Mobile (GSM) committee and later provided a permanent technical-support group based in Paris . Five years later, in 1987, 15 representatives from 13 European countries signed

917-584: A global standard for mobile communications achieving over 90% market share, and operating in over 193 countries and territories. 2G networks developed as a replacement for first generation ( 1G ) analog cellular networks. The GSM standard originally described a digital, circuit-switched network optimized for full duplex voice telephony . This expanded over time to include data communications, first by circuit-switched transport , then by packet data transport via General Packet Radio Service (GPRS), and Enhanced Data Rates for GSM Evolution (EDGE). Subsequently,

1048-569: A group of investors led by Tunde Ayeni . BBC The British Broadcasting Corporation ( BBC ) is a British public service broadcaster headquartered at Broadcasting House in London , England. Originally established in 1922 as the British Broadcasting Company , it evolved into its current state with its current name on New Year's Day 1927. The oldest and largest local and global broadcaster by stature and by number of employees,

1179-461: A larger brand: in 2003, BBC Choice was replaced by BBC Three , with programming for younger adults and shocking real-life documentaries, BBC News 24 became the BBC News Channel in 2008, and BBC Radio 7 became BBC Radio 4 Extra in 2011, with new programmes to supplement those broadcast on Radio 4. In 2008, another channel was launched, BBC Alba , a Scottish Gaelic service. During this decade,

1310-426: A mast or a building above average rooftop level. Micro cells are cells whose antenna height is under average rooftop level; they are typically deployed in urban areas. Picocells are small cells whose coverage diameter is a few dozen meters; they are mainly used indoors. Femtocells are cells designed for use in residential or small-business environments and connect to a telecommunications service provider 's network via

1441-599: A news and information service. In 1978, BBC staff went on strike just before the Christmas, thus blocking out the transmission of both channels and amalgamating all four radio stations into one. Since the deregulation of the UK television and radio market in the 1980s, the BBC has faced increased competition from the commercial sector (and from the advertiser-funded public service broadcaster Channel 4 ), especially on satellite television, cable television, and digital television services. In

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1572-489: A number of additional channels and radio stations have been launched: Radio 5 was launched in 1990, as a sports and educational station, but was replaced in 1994, with BBC Radio 5 Live to become a live radio station, following the success of the Radio 4 service to cover the 1991 Gulf War . The new station would be a news and sport station. In 1997, BBC News 24 , a rolling news channel, launched on digital television services, and

1703-456: A problem for any open-source GSM implementation, because it is not possible for GNU or any other free software distributor to guarantee immunity from all lawsuits by the patent holders against the users. Furthermore, new features are being added to the standard all the time which means they have patent protection for a number of years. The original GSM implementations from 1991 may now be entirely free of patent encumbrances, however patent freedom

1834-732: A proposal to cut 4,000 jobs, and to privatise parts of the BBC, disrupted much of the BBC's regular programming. In 2006, BBC HD launched as an experimental service and became official in December 2007. The channel broadcast HD simulcasts of programmes on BBC One , BBC Two , BBC Three and BBC Four as well as repeats of some older programmes in HD. In 2010, an HD simulcast of BBC One launched: BBC One HD . The channel uses HD versions of BBC One's schedule and uses upscaled versions of programmes not currently produced in HD. The BBC HD channel closed in March 2013 and

1965-625: A rare unity and speed guided by four public officials: Armin Silberhorn (Germany), Stephen Temple (UK), Philippe Dupuis (France), and Renzo Failli (Italy). In 1989 the Groupe Spécial Mobile committee was transferred from CEPT to the European Telecommunications Standards Institute (ETSI). The IEEE/RSE awarded to Thomas Haug and Philippe Dupuis the 2018 James Clerk Maxwell medal for their "leadership in

2096-481: A relationship between two parts of the algorithm. The researchers found that this relationship was very unlikely to have happened if it was not intentional. This may have been done in order to satisfy European controls on export of cryptographic programs. The GSM systems and services are described in a set of standards governed by ETSI , where a full list is maintained. Several open-source software projects exist that provide certain GSM features: Patents remain

2227-539: A series of strikes; however, the BBC stated that the cuts were essential to move the organisation forward and concentrate on increasing the quality of programming. On 20 October 2010, the Chancellor of the Exchequer George Osborne announced that the television licence fee would be frozen at its current level until the end of the current charter in 2016. The same announcement revealed that the BBC would take on

2358-478: A stronger one. Since 2000, different efforts have been made in order to crack the A5 encryption algorithms. Both A5/1 and A5/2 algorithms have been broken, and their cryptanalysis has been revealed in the literature. As an example, Karsten Nohl developed a number of rainbow tables (static values which reduce the time needed to carry out an attack) and have found new sources for known plaintext attacks . He said that it

2489-443: A term referring to inexperienced individuals utilizing readily available hardware and software. The vulnerability arises from the accessibility of tools such as a DVB-T TV tuner, posing a threat to both mobile and network users. Despite the term "script kiddies" implying a lack of sophisticated skills, the consequences of their attacks on GSM can be severe, impacting the functionality of cellular networks . Given that GSM continues to be

2620-444: Is 4.615 ms. TDMA noise is interference that can be heard on speakers near a GSM phone using TDMA, audible as a buzzing sound. The transmission power in the handset is limited to a maximum of 2 watts in GSM 850/900 and 1 watt in GSM 1800/1900 . GSM has used a variety of voice codecs to squeeze 3.1 kHz audio into between 7 and 13 kbit/s. Originally, two codecs, named after

2751-426: Is called SIM locking and is implemented by a software feature of the phone. A subscriber may usually contact the provider to remove the lock for a fee, utilize private services to remove the lock, or use software and websites to unlock the handset themselves. It is possible to hack past a phone locked by a network operator. In some countries and regions (e.g. Brazil and Germany ) all phones are sold unlocked due to

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2882-477: Is needed indoors, as in shopping centers or airports. However, this is not a prerequisite, since indoor coverage is also provided by in-building penetration of radio signals from any nearby cell. GSM networks operate in a number of different carrier frequency ranges (separated into GSM frequency ranges for 2G and UMTS frequency bands for 3G), with most 2G GSM networks operating in the 900 MHz or 1800 MHz bands. Where these bands were already allocated,

3013-443: Is not certain due to the United States' "first to invent" system that was in place until 2012. The "first to invent" system, coupled with "patent term adjustment" can extend the life of a U.S. patent far beyond 20 years from its priority date. It is unclear at this time whether OpenBTS will be able to implement features of that initial specification without limit. As patents subsequently expire, however, those features can be added into

3144-500: Is obviously of paramount importance." Reith succeeded in building a high wall against an American-style free-for-all in radio in which the goal was to attract the largest audiences and thereby secure the greatest advertising revenue. There was no paid advertising on the BBC; all the revenue came from a tax on receiving sets. Highbrow audiences, however, greatly enjoyed it. At a time when American, Australian and Canadian stations were drawing huge audiences cheering for their local teams with

3275-486: Is possible to build "a full GSM interceptor   ... from open-source components" but that they had not done so because of legal concerns. Nohl claimed that he was able to intercept voice and text conversations by impersonating another user to listen to voicemail , make calls, or send text messages using a seven-year-old Motorola cellphone and decryption software available for free online. GSM uses General Packet Radio Service (GPRS) for data transmissions like browsing

3406-421: Is responsible for operational management and delivery of services within a framework set by the board, and is chaired by the director-general , currently Tim Davie , who is chief executive and (from 1994) editor-in-chief. The corporation has the following in-house divisions covering the BBC's output and operations: GSM The Global System for Mobile Communications ( GSM ) is a standard developed by

3537-507: Is said to be in use on some more modern networks. If used with USIM to prevent connections to fake base stations and downgrade attacks , users will be protected in the medium term, though migration to 128-bit GEA/4 is still recommended. The first public cryptanalysis of GEA/1 and GEA/2 (also written GEA-1 and GEA-2) was done in 2021. It concluded that although using a 64-bit key, the GEA-1 algorithm actually provides only 40 bits of security, due to

3668-400: Is structured into several discrete sections: GSM utilizes a cellular network , meaning that cell phones connect to it by searching for cells in the immediate vicinity. There are five different cell sizes in a GSM network: The coverage area of each cell varies according to the implementation environment. Macro cells can be regarded as cells where the base-station antenna is installed on

3799-452: The 3GPP developed third-generation ( 3G ) UMTS standards, followed by the fourth-generation ( 4G ) LTE Advanced and the fifth-generation 5G standards, which do not form part of the ETSI GSM standard. Beginning in the late 2010s, various carriers worldwide started to shut down their GSM networks . Nevertheless, as a result of the network's widespread use, the acronym "GSM" is still used as

3930-626: The Archbishops of Canterbury and York came to St Paul's to broadcast to the UK and the world on the National Day of Prayer. BBC employees during the war included George Orwell who spent two years with the broadcaster. During his role as prime minister during the war, Winston Churchill delivered 33 major wartime speeches by radio, all of which were carried by the BBC within the UK. On 18 June 1940, French general Charles de Gaulle , in exile in London as

4061-577: The BBC Television Service ) started from Alexandra Palace in November 1936, alternating between an improved Baird mechanical 240-line system and the all-electronic 405-line Marconi-EMI system which had been developed by an EMI research team led by Sir Isaac Shoenberg . The superiority of the electronic system saw the mechanical system dropped early the following year, with the Marconi-EMI system

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4192-520: The European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation ( 2G ) digital cellular networks used by mobile devices such as mobile phones and tablets. GSM is also a trade mark owned by the GSM Association . " GSM " may also refer to the voice codec initially used in GSM. It was first implemented in Finland in December 1991. By the mid-2010s, it became

4323-936: The MediaCityUK development in Salford , with BBC Three moving online only in 2016, the sharing of more programmes between stations and channels, sharing of radio news bulletins, more repeats in schedules, including the whole of BBC Two daytime and for some original programming to be reduced. BBC HD was closed on 26 March 2013, and replaced with an HD simulcast of BBC Two; however, flagship programmes, other channels and full funding for CBBC and CBeebies would be retained. Numerous BBC facilities have been sold off, including New Broadcasting House on Wilmslow Road in Manchester. Many major departments have been relocated to Broadcasting House in central London and MediaCityUK in Salford, particularly since

4454-514: The 2025–26 season of the Women's Super League campaign. The BBC is a statutory corporation , independent from direct government intervention, with its activities being overseen from April 2017 by the BBC Board and regulated by Ofcom . The chairman is Samir Shah. The BBC is a state owned public broadcasting company and operates under a royal charter . The charter is the constitutional basis for

4585-524: The 3GPP. GSM, for the first time, set a common standard for Europe for wireless networks. It was also adopted by many countries outside Europe. This allowed subscribers to use other GSM networks that have roaming agreements with each other. The common standard reduced research and development costs, since hardware and software could be sold with only minor adaptations for the local market. Telstra in Australia shut down its 2G GSM network on 1 December 2016,

4716-550: The 850 MHz and 1900 MHz bands were used instead (for example in Canada and the United States). In rare cases the 400 and 450 MHz frequency bands are assigned in some countries because they were previously used for first-generation systems. For comparison, most 3G networks in Europe operate in the 2100 MHz frequency band. For more information on worldwide GSM frequency usage, see GSM frequency bands . Regardless of

4847-467: The BBC announced a BBC News savings target of £80 million per year by 2022, involving about 520 staff reductions. The BBC's director of news and current affairs Fran Unsworth said there would be further moves toward digital broadcasting, in part to attract back a youth audience, and more pooling of reporters to stop separate teams covering the same news. In 2020, the BBC reported a £119 million deficit because of delays to cost reduction plans, and

4978-537: The BBC employs over 21,000 staff in total, of whom approximately 17,200 are in public-sector broadcasting. The BBC was established under a royal charter , and operates under an agreement with the Secretary of State for Culture, Media and Sport . Its work is funded principally by an annual television licence fee which is charged to all British households, companies, and organisations using any type of equipment to receive or record live television broadcasts or to use

5109-506: The BBC has played a prominent role in British life and culture. It is sometimes informally referred to as the Beeb or Auntie . In 1923 it launched Radio Times (subtitled "The official organ of the BBC"), the first broadcast listings magazine; the 1988 Christmas edition sold 11 million copies, the biggest-selling edition of any British magazine in history. Britain's first live public broadcast

5240-565: The BBC is subject to an additional 'Agreement' between it and the Culture Secretary , and that its operating licence is to be set by Ofcom, an external regulatory body . It used to be that the Home Secretary be departmental to both Agreement as well as Licence, and regulatory duties fall to the BBC Trust , but the 2017 charter changed those 2007 arrangements. The charter, too, outlines

5371-741: The BBC released minutes of the board meeting which led to Greg Dyke's resignation. Unlike the other departments of the BBC, the BBC World Service was funded by the Foreign, Commonwealth and Development Office . The Foreign and Commonwealth Office, more commonly known as the Foreign Office or the FCO, is the British government department responsible for promoting the interests of the United Kingdom abroad. A strike in 2005 by more than 11,000 BBC workers, over

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5502-440: The BBC suddenly became the primary source of news for the duration of the crisis. The crisis placed the BBC in a delicate position. On the one hand Reith was acutely aware that the government might exercise its right to commandeer the BBC at any time as a mouthpiece of the government if the BBC were to step out of line, but on the other he was anxious to maintain public trust by appearing to be acting independently. The government

5633-477: The BBC was granted sufficient leeway to pursue the government's objectives largely in a manner of its own choosing. Supporters of the strike nicknamed the BBC the BFC for British Falsehood Company. Reith personally announced the end of the strike which he marked by reciting from Blake's " Jerusalem " signifying that England had been saved. While the BBC tends to characterise its coverage of the general strike by emphasising

5764-531: The BBC", was priced at tuppence (two pence ) on newsstands, and quickly sold out its run of a quarter of a million copies. Mid-1925 found the future of broadcasting under further consideration, this time by the Crawford committee. By now, the BBC, under Reith's leadership, had forged a consensus favouring a continuation of the unified (monopoly) broadcasting service, but more money was still required to finance rapid expansion. Wireless manufacturers were anxious to exit

5895-459: The BBC's airwaves. In 1937, a MI5 security officer was given a permanent office within the organisation. This officer would examine the files of potential political subversives and mark the files of those deemed a security risk to the organisation, blacklisting them. This was often done on spurious grounds; even so, the practice would continue and expand during the years of the Cold War. There

6026-535: The BBC's censorship office, which surveilled and edited American coverage of British affairs. By 1940, across all BBC broadcasts, music by composers from enemy nations was censored. In total, 99 German, 38 Austrian and 38 Italian composers were censored. The BBC argued that like the Italian or German languages, listeners would be irritated by the inclusion of enemy composers. Any potential broadcasters said to have pacifist, communist or fascist ideologies were not allowed on

6157-512: The BBC's revenue comes from its commercial subsidiary BBC Studios (formerly BBC Worldwide ), which sells BBC programmes and services internationally and also distributes the BBC's international 24-hour English-language news services BBC News , and from BBC.com, provided by BBC Global News Ltd. In 2009, the company was awarded the Queen's Award for Enterprise in recognition of its international achievements in business. Since its formation in 1922,

6288-679: The BBC's streaming service, iPlayer . The fee is set by the British Government , agreed by Parliament , and is used to fund the BBC's radio, TV, and online services covering the nations and regions of the UK. Since 1 April 2014, it has also funded the BBC World Service (launched in 1932 as the BBC Empire Service), which broadcasts in 28 languages and provides comprehensive TV, radio, and online services in Arabic and Persian . Some of

6419-510: The BBC, and sets out the BBC's Object, Mission and Public Purposes. It emphasises public service , (limited) editorial independence , prohibits advertising on domestic services and proclaims the BBC is to "seek to avoid adverse impacts on competition which are not necessary for the effective fulfilment of the Mission and the promotion of the Public Purposes". The charter also sets out that

6550-575: The British government's asylum policy on social media. Lineker was suspended from his position on Match of the Day before being re-instated after receiving overwhelming support from his colleagues. The scandal was made worse due to the connections between BBC's chairman, Richard Sharp, and the Conservative Party. In April 2023, Richard Sharp resigned as chairman after a report found he did not disclose potential perceived conflicts of interest in his role in

6681-500: The CBBC Channel and CBeebies Channel. In addition to the television channels, new digital radio stations were created: 1Xtra , 6 Music and Radio 4 Extra . BBC 1Xtra was a sister station to Radio 1 and specialised in modern black music, BBC 6 Music specialised in alternative music genres and BBC7 specialised in archive, speech and children's programming. The following few years resulted in repositioning of some channels to conform to

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6812-676: The Corporation's governance and regulatory arrangements as a statutory corporation, including the role and composition of the BBC Board. The current Charter began on 1 January 2017 and ends on 31 December 2027; the Agreement being coterminous. The BBC Board was formed in April 2017. It replaced the previous governing body, the BBC Trust, which itself had replaced the board of governors in 2007. The board sets

6943-642: The GPO and the BBC had become deadlocked and the Postmaster General commissioned a review of broadcasting by the Sykes Committee. The committee recommended a short-term reorganisation of licence fees with improved enforcement in order to address the BBC's immediate financial distress, and an increased share of the licence revenue split between it and the GPO. This was to be followed by a simple 10 shillings licence fee to fund broadcasts. The BBC's broadcasting monopoly

7074-453: The Post and Telecommunications department provided mailing and internal telecommunication services between Nigerian cities while NET provided telecommunications services between selected Nigerian cities and foreign countries. Due to resource constraints, provision of services were planned in phases with expansion more pronounced between the 1950s and 1970s. Telegraph services began in the 1880s and

7205-498: The Prime Minister, maintained the censorship of editorial opinions on public policy, but allowed the BBC to address matters of religious, political or industrial controversy. The resulting political "talk series", designed to inform England on political issues, were criticised by members of parliament, including Winston Churchill, David Lloyd George and Sir Austen Chamberlain . Those who opposed these chats claimed that they silence

7336-457: The UK by 1993, called the DCS 1800. Also that year, Telstra became the first network operator to deploy a GSM network outside Europe and the first practical hand-held GSM mobile phone became available. In 1995 fax, data and SMS messaging services were launched commercially, the first 1900 MHz GSM network became operational in the United States and GSM subscribers worldwide exceeded 10 million. In

7467-492: The UK's first Independent local radio station, LBC came on-air in the London area. As a result of the Pilkington Committee report of 1962, in which the BBC was praised for the quality and range of its output, and ITV was very heavily criticised for not providing enough quality programming, the decision was taken to award the BBC a second television channel, BBC2 , in 1964, renaming the existing service BBC1 . BBC2 used

7598-517: The United States, the GPO proposed that it would issue a single broadcasting licence to a company jointly owned by a consortium of leading wireless receiver manufacturers, to be known as the British Broadcasting Company Ltd , which was formed on 18 October 1922. John Reith , a Scottish Calvinist , was appointed its general manager in December 1922 a few weeks after the company made its first official broadcast. L. Stanton Jefferies

7729-533: The United States; A5/2 is weaker and used in other countries. Serious weaknesses have been found in both algorithms: it is possible to break A5/2 in real-time with a ciphertext-only attack , and in January 2007, The Hacker's Choice started the A5/1 cracking project with plans to use FPGAs that allow A5/1 to be broken with a rainbow table attack. The system supports multiple algorithms so operators may replace that cipher with

7860-427: The abundance of dual-SIM handsets and operators. GSM was intended to be a secure wireless system. It has considered the user authentication using a pre-shared key and challenge–response , and over-the-air encryption. However, GSM is vulnerable to different types of attack, each of them aimed at a different part of the network. Research findings indicate that GSM faces susceptibility to hacking by script kiddies ,

7991-622: The air and forced the British government finally to regulate radio services to permit nationally based advertising-financed services. In response, the BBC reorganised and renamed their radio channels. On 30 September 1967, the Light Programme was split into Radio 1 offering continuous "Popular" music and Radio 2 more "Easy Listening". The "Third" programme became Radio 3 offering classical music and cultural programming. The Home Service became Radio 4 offering news, and non-musical content such as quiz shows, readings, dramas and plays. As well as

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8122-405: The assets of MTS, obtained a GSM license. Beginning in 2001, the company went through a period of botched sales and divestment, the first was the proposed sale of 51% stake to a group of investors under the trading name of Investors International London limited, the sale was cancelled after the investors failed to make the final bid price. Subsequently, the government stopped capital investment in

8253-458: The broadcast of baseball, rugby and hockey, the BBC emphasised service for a national rather than a regional audience. Boat races were well covered along with tennis and horse racing, but the BBC was reluctant to spend its severely limited air time on long football or cricket games, regardless of their popularity. John Reith and the BBC, with support from the Crown , determined the universal needs of

8384-606: The challenge of better reflecting and representing a changing UK". Since 2017, the BBC has also funded the Local Democracy Reporting Service , with up to 165 journalists employed by independent news organisations to report on local democracy issues on a pooled basis. In 2016, the BBC Director General Tony Hall announced a savings target of £800 million per year by 2021, which is about 23% of annual licence fee revenue. Having to take on

8515-464: The closure of BBC Television Centre in March 2013. On 16 February 2016, the BBC Three television service was discontinued and replaced by a digital outlet under the same name, targeting its young adult audience with web series and other content. Under the new royal charter instituted in 2017, the corporation must publish an annual report to Ofcom, outlining its plans and public service obligations for

8646-507: The concept of an extended cell, where the cell radius could be double or even more, depending on the antenna system, the type of terrain, and the timing advance . GSM supports indoor coverage – achievable by using an indoor picocell base station, or an indoor repeater with distributed indoor antennas fed through power splitters – to deliver the radio signals from an antenna outdoors to the separate indoor distributed antenna system. Picocells are typically deployed when significant call capacity

8777-408: The corporation began to sell off a number of its operational divisions to private owners; BBC Broadcast was spun off as a separate company in 2002, and in 2005, it was sold off to Australian -based Macquarie Capital Alliance Group and Macquarie Group Limited and rebranded Red Bee Media . The BBC's IT , telephony and broadcast technology were brought together as BBC Technology Ltd in 2001, and

8908-429: The country, to make internal communications more commercial in objective and to reduce duplication of budgetary allocations and investments. NITEL inherited mostly analogue infrastructure from its predecessors and had to fund new investments in digital infrastructures. It introduced mobile telephony in 1992, through MTS, a partnership with Digital Communications Limited, an Atlanta-based firm. However, operationally, it

9039-525: The development of the first international mobile communications standard with subsequent evolution into worldwide smartphone data communication". The GSM (2G) has evolved into 3G, 4G and 5G. In parallel France and Germany signed a joint development agreement in 1984 and were joined by Italy and the UK in 1986. In 1986, the European Commission proposed reserving the 900 MHz spectrum band for GSM. It

9170-553: The division was later sold to the German company Siemens IT Solutions and Services (SIS). SIS was subsequently acquired from Siemens by the French company Atos . Further divestments included BBC Books (sold to Random House in 2006); BBC Outside Broadcasts Ltd (sold in 2008 to Satellite Information Services ); Costumes and Wigs (stock sold in 2008 to Angels Costumes ); and BBC Magazines (sold to Immediate Media Company in 2011). After

9301-407: The facilitation of a loan to Prime Minister Boris Johnson . Dame Elan Closs Stephens was appointed as acting chairwoman on 27 June 2023, and she would lead the BBC board for a year or until a new permanent chair has been appointed. Samir Shah was subsequently appointed with effect from 4 March 2024. In October 2024 it was announced that the BBC along with Sky Sports signed a deal to broadcast

9432-404: The firm and approved a management turnaround contract with a firm called Pentascope in 2003. The contract was cancelled in 2005 after it became clear Pentascope did not have the adequate resources to run NITEL. Another failed divestment to Orascom in 2005 followed before the firm was sold to a subsidiary of Transcorp in 2007, but that sale was revoked in 2009. In 2014, the firm was sold to NATCOM,

9563-492: The first HSDPA -capable network also became operational. The first HSUPA network launched in 2007. ( High Speed Packet Access (HSPA) and its uplink and downlink versions are 3G technologies, not part of GSM.) Worldwide GSM subscribers exceeded three billion in 2008. The GSM Association estimated in 2011 that technologies defined in the GSM standard served 80% of the mobile market, encompassing more than 5 billion people across more than 212 countries and territories, making GSM

9694-453: The first Multimedia Messaging Service (MMS) was introduced and the first GSM network in the 800 MHz frequency band became operational. Enhanced Data rates for GSM Evolution (EDGE) services first became operational in a network in 2003, and the number of worldwide GSM subscribers exceeded 1 billion in 2004. By 2005 GSM networks accounted for more than 75% of the worldwide cellular network market, serving 1.5 billion subscribers. In 2005,

9825-447: The first fully electronic television system in the world to be used in regular broadcasting. The success of broadcasting provoked animosities between the BBC and well-established media such as theatres, concert halls and the recording industry. By 1929, the BBC complained that the agents of many comedians refused to sign contracts for broadcasting, because they feared it harmed the artist "by making his material stale" and that it "reduces

9956-663: The first mobile network operator to decommission a GSM network. The second mobile provider to shut down its GSM network (on 1 January 2017) was AT&T Mobility from the United States . Optus in Australia completed the shut down of its 2G GSM network on 1 August 2017, part of the Optus GSM network covering Western Australia and the Northern Territory had earlier in the year been shut down in April 2017. Singapore shut down 2G services entirely in April 2017. The network

10087-429: The following year, BBC Choice was launched as the third general entertainment channel from the BBC. The BBC also purchased The Parliamentary Channel, which was renamed BBC Parliament . In 1999, BBC Knowledge launched as a multimedia channel, with services available on the newly launched BBC Text digital teletext service (later rebranded as BBC Red Button), and on BBC Online . The channel had an educational aim, which

10218-453: The forthcoming ending of the remaining £253 million funding towards pensioner licence fees would increase financial pressures. In January 2021, it was reported that former banker Richard Sharp would succeed David Clementi , as chairman, when he stepped down in February. In March 2023, the BBC was at the centre of a political row with football pundit Gary Lineker , after he criticised

10349-624: The four big EU countries cemented their political support for GSM with the Bonn Declaration on Global Information Networks in May and the GSM MoU was tabled for signature in September. The MoU drew in mobile operators from across Europe to pledge to invest in new GSM networks to an ambitious common date. In this short 38-week period the whole of Europe (countries and industries) had been brought behind GSM in

10480-499: The four national channels, a series of local BBC radio stations were established in 1967, including Radio London . In 1969, the BBC Enterprises department was formed to exploit BBC brands and programmes for commercial spin-off products. In 1979, it became a wholly owned limited company, BBC Enterprises Ltd. In 1974, the BBC's teletext service, Ceefax , was introduced, created initially to provide subtitling, but developed into

10611-416: The frequency selected by an operator, it is divided into timeslots for individual phones. This allows eight full-rate or sixteen half-rate speech channels per radio frequency . These eight radio timeslots (or burst periods) are grouped into a TDMA frame. Half-rate channels use alternate frames in the same timeslot. The channel data rate for all 8 channels is 270.833 kbit/s, and the frame duration

10742-612: The full cost of running the BBC World Service and the BBC Monitoring service from the Foreign and Commonwealth Office, and partially finance the Welsh broadcaster S4C . Further cuts were announced on 6 October 2011, so the BBC could reach a total reduction in their budget of 20%, following the licence fee freeze in October 2010, which included cutting staff by 2,000 and sending a further 1,000 to

10873-538: The government of Nigerian decided to go into a partnership with Cable and Wireless , acquiring interest in the Nigerian arm of Cable and Wireless, and renaming the company Nigerian External Telecommunications. The new firm provided international telephone, telex and telegraph services, high speed data transmission and transmission and reception of real time television but those services were mainly restricted to Lagos and major cities of Nigeria such as Ibadan , Enugu , Kaduna , and Port-Harcourt . The firm's major investment

11004-633: The government. Throughout the 1930s, political broadcasts had been closely monitored by the BBC. In 1935, the BBC censored the broadcasts of Oswald Mosley and Harry Pollitt . Mosley was a leader of the British Union of Fascists , and Pollitt a leader of the Communist Party of Great Britain . They had been contracted to provide a series of five broadcasts on their parties' politics. The BBC, in conjunction with The Foreign Office of Britain, first suspended this series and ultimately cancelled it without

11135-405: The higher resolution 625-line standard which had been standardised across Europe. BBC2 was broadcast in colour from 1 July 1967 and was joined by BBC1 and ITV on 15 November 1969. The 405-line VHF transmissions of BBC1 (and ITV) were continued for compatibility with older television receivers until 1985. Starting in 1964, a series of pirate radio stations (starting with Radio Caroline ) came on

11266-614: The key features of GSM is the Subscriber Identity Module , commonly known as a SIM card . The SIM is a detachable smart card containing a user's subscription information and phone book. This allows users to retain their information after switching handsets. Alternatively, users can change networks or network identities without switching handsets - simply by changing the SIM. Sometimes mobile network operators restrict handsets that they sell for exclusive use in their own network. This

11397-534: The late 1980s, the BBC began a process of divestment by spinning off and selling parts of its organisation. In 1988, it sold off the Hulton Press Library, a photographic archive which had been acquired from the Picture Post magazine by the BBC in 1957. The archive was sold to Brian Deutsch and is now owned by Getty Images . In 1987, the BBC decided to centralize its operations by the management team with

11528-665: The leader of the Free French, made a speech, broadcast by the BBC, urging the French people not to capitulate to the Nazis. In October 1940, Princesses Elizabeth and Margaret made their first radio broadcast for the BBC's Children's Hour , addressing other children who had been evacuated from cities. In 1938, John Reith and the Government of the United Kingdom , specifically the Ministry of Information which had been set up for WWII, designed

11659-489: The loss-making consortium, and Reith was keen that the BBC be seen as a public service rather than a commercial enterprise. The recommendations of the Crawford Committee were published in March the following year and were still under consideration by the GPO when the 1926 United Kingdom general strike broke out in May. The strike temporarily interrupted newspaper production, and with restrictions on news bulletins waived,

11790-414: The main source of cellular technology in numerous countries, its susceptibility to potential threats from malicious attacks is one that needs to be addressed. The development of UMTS introduced an optional Universal Subscriber Identity Module (USIM), that uses a longer authentication key to give greater security, as well as mutually authenticating the network and the user, whereas GSM only authenticates

11921-754: The material their broadcasts would cover. Nothing was to be added outside the preordained news items. For example, the BBC Polish Service was heavily censored due to fears of jeopardising relations with the Soviet Union . Controversial topics, i.e. the contested Polish and Soviet border, the deportation of Polish citizens, the arrests of Polish Home Army members and the Katyn massacre , were not included in Polish broadcasts. American radio broadcasts were broadcast across Europe on BBC channels. This material also passed through

12052-530: The modest, church-going elderly or a member of the Clergy . Until 1928, entertainers broadcasting on the BBC, both singers and "talkers" were expected to avoid biblical quotations, Clerical impersonations and references, references to drink or Prohibition in the United States , vulgar and doubtful matter and political allusions. The BBC excluded popular foreign music and musicians from its broadcasts, while promoting British alternatives. On 5 March 1928, Stanley Baldwin,

12183-580: The most ubiquitous of the many standards for cellular networks. GSM is a second-generation (2G) standard employing time-division multiple-access (TDMA) spectrum-sharing, issued by the European Telecommunications Standards Institute (ETSI). The GSM standard does not include the 3G Universal Mobile Telecommunications System (UMTS), code-division multiple access (CDMA) technology, nor the 4G LTE orthogonal frequency-division multiple access (OFDMA) technology standards issued by

12314-400: The needs of the business and wider population, man times the lines were congested as available lines on the telephone trunks could not keep up with the traffic. Nigerian Telecommunications Limited was formed in 1985 as the combination of the telecommunications division of Post and Telecommunications and NET. The new company was formed to improve coordination of telecommunication services within

12445-413: The new corporation adopted the coat of arms , including the motto "Nation shall speak peace unto Nation". British radio audiences had little choice apart from the upscale programming of the BBC. Reith, an intensely moralistic executive, was in full charge. His goal was to broadcast "All that is best in every department of human knowledge, endeavour and achievement.... The preservation of a high moral tone

12576-473: The next year. In its 2017–18 report, released July 2017, the BBC announced plans to "re-invent" its output to better compete against commercial streaming services such as Netflix . These plans included increasing the diversity of its content on television and radio, a major increase in investments towards digital children's content, and plans to make larger investments in Wales, Scotland and Northern Ireland to "rise to

12707-413: The notice of the public. Less radical politicians faced similar censorship. In 1938, Winston Churchill proposed a series of talks regarding British domestic and foreign politics and affairs but was similarly censored. The censorship of political discourse by the BBC was a precursor to the total shutdown of political debate that manifested over the BBC's wartime airwaves. The Foreign Office maintained that

12838-541: The opinions of those in Parliament who are not nominated by Party Leaders or Party Whips, thus stifling independent, non-official views. In October 1932, the policemen of the Metropolitan Police Federation marched in protest at a proposed pay cut. Fearing dissent within the police force and public support for the movement, the BBC censored its coverage of the events, only broadcasting official statements from

12969-407: The people of Britain and broadcast content according to these perceived standards. Reith effectively censored anything that he felt would be harmful, directly or indirectly. While recounting his time with the BBC in 1935, Raymond Postgate claims that BBC broadcasters were made to submit a draft of their potential broadcast for approval. It was expected that they tailored their content to accommodate

13100-435: The positive impression created by its balanced coverage of the views of government and strikers, Seaton has characterised the episode as the invention of "modern propaganda in its British form". Reith argued that trust gained by 'authentic impartial news' could then be used. Impartial news was not necessarily an end in itself. The BBC did well out of the crisis, which cemented a national audience for its broadcasting, and it

13231-476: The post, with a note saying 'We regret, etc.'" In the 1930s music broadcasts also enjoyed great popularity, for example the friendly and wide-ranging BBC Theatre Organ broadcasts at St George's Hall , London by Reginald Foort , who held the official role of BBC Staff Theatre Organist from 1936 to 1938. Television broadcasting was suspended from 1 September 1939 to 7 June 1946, during the World War II , and it

13362-495: The pressure from these quarters and uneasiness among the staff of the licensing authority, the General Post Office (GPO), was sufficient to lead to a ban on further Chelmsford broadcasts. But by 1922, the GPO had received nearly 100 broadcast licence requests and moved to rescind its ban in the wake of a petition by 63 wireless societies with over 3,000 members. Anxious to avoid the same chaotic expansion experienced in

13493-459: The public should not be aware of their role in the censorship. From 1935 to 1939, the BBC also attempted to unite the British Empire's radio waves, sending staff to Egypt, Palestine , Newfoundland , Jamaica, India, Canada and South Africa. Reith personally visited South Africa, lobbying for state-run radio programmes which was accepted by South African Parliament in 1936. A similar programme

13624-423: The radio and television divisions joining forces together for the first time, the activities of the news and currents departments and coordinated jointly under the new directorate. During the 1990s, this process continued with the separation of certain operational arms of the corporation into autonomous but wholly owned subsidiaries , with the aim of generating additional revenue for programme-making. BBC Enterprises

13755-443: The sales of OBs and costumes, the remainder of BBC Resources was reorganised as BBC Studios and Post Production , which continues today as a wholly owned subsidiary of the BBC. The 2004 Hutton Inquiry and the subsequent report raised questions about the BBC's journalistic standards and its impartiality. This led to resignations of senior management members at the time including the then Director General, Greg Dyke . In January 2007,

13886-459: The same year, the GSM Association formed. Pre-paid GSM SIM cards were launched in 1996 and worldwide GSM subscribers passed 100 million in 1998. In 2000 the first commercial General Packet Radio Service (GPRS) services were launched and the first GPRS-compatible handsets became available for sale. In 2001, the first UMTS (W-CDMA) network was launched, a 3G technology that is not part of GSM. Worldwide GSM subscribers exceeded 500 million. In 2002,

14017-458: The signal. GSM was further enhanced in 1997 with the enhanced full rate (EFR) codec, a 12.2 kbit/s codec that uses a full-rate channel. Finally, with the development of UMTS , EFR was refactored into a variable-rate codec called AMR-Narrowband , which is high quality and robust against interference when used on full-rate channels, or less robust but still relatively high quality when used in good radio conditions on half-rate channel. One of

14148-427: The strategy for the corporation, assesses the performance of the BBC's executive board in delivering the BBC's services, and appoints the director-general. Ofcom is responsible for the regulation of the BBC. The board consists of the following members: The executive committee is responsible for the day-to-day operations of the broadcaster. Consisting of senior managers of the BBC, the committee meets once per month and

14279-403: The subscriber base to over 100,000 by 1973 and up to 400,000 by 1990. The history of NET can be traced to colonial rule towards the end of the nineteenth century. In 1886, a telegraph service between Lagos and London was provided by African Direct Telegraph Company, this company later became Imperial and International Communications after a merger and then Cable and Wireless. Upon independence,

14410-400: The types of data channel they were allocated, were used, called Half Rate (6.5 kbit/s) and Full Rate (13 kbit/s). These used a system based on linear predictive coding (LPC). In addition to being efficient with bitrates , these codecs also made it easier to identify more important parts of the audio, allowing the air interface layer to prioritize and better protect these parts of

14541-415: The user to the network (and not vice versa). The security model therefore offers confidentiality and authentication, but limited authorization capabilities, and no non-repudiation . GSM uses several cryptographic algorithms for security. The A5/1 , A5/2 , and A5/3 stream ciphers are used for ensuring over-the-air voice privacy. A5/1 was developed first and is a stronger algorithm used within Europe and

14672-563: The value of the artist as a visible music-hall performer". On the other hand, the BBC was "keenly interested" in a cooperation with the recording companies who "in recent years ... have not been slow to make records of singers, orchestras, dance bands, etc. who have already proved their power to achieve popularity by wireless." Radio plays were so popular that the BBC had received 6,000 manuscripts by 1929, most of them written for stage and of little value for broadcasting: "Day in and day out, manuscripts come in, and nearly all go out again through

14803-535: The web. The most commonly deployed GPRS ciphers were publicly broken in 2011. The researchers revealed flaws in the commonly used GEA/1 and GEA/2 (standing for GPRS Encryption Algorithms 1 and 2) ciphers and published the open-source "gprsdecode" software for sniffing GPRS networks. They also noted that some carriers do not encrypt the data (i.e., using GEA/0) in order to detect the use of traffic or protocols they do not like (e.g., Skype ), leaving customers unprotected. GEA/3 seems to remain relatively hard to break and

14934-509: The £700 million cost for free TV licences for the over-75 pensioners, and rapid inflation in drama and sport coverage costs, was given as the reason. Duplication of management and content spending would be reduced, and there would be a review of BBC News . In September 2019, the BBC launched the Trusted News Initiative to work with news and social media companies to combat disinformation about national elections. In 2020,

15065-442: Was a widely reported urban myth that, upon resumption of the BBC television service after the war, announcer Leslie Mitchell started by saying, "As I was saying before we were so rudely interrupted ..." In fact, the first person to appear when transmission resumed was Jasmine Bligh and the words said were "Good afternoon, everybody. How are you? Do you remember me, Jasmine Bligh ... ?" The European Broadcasting Union

15196-463: Was actually made by me. I called Marjo Jousinen, in Salo.", Lonka informed. The following year saw the sending of the first short messaging service (SMS or "text message") message, and Vodafone UK and Telecom Finland signed the first international roaming agreement. Work began in 1991 to expand the GSM standard to the 1800 MHz frequency band and the first 1800 MHz network became operational in

15327-446: Was adopted in Canada. Through collaboration with these state-run broadcasting centres, Reith left a legacy of cultural influence across the empire of Great Britain with his departure from the corporation in 1938. Experimental television broadcasts were started in 1929, using an electromechanical 30-line system developed by John Logie Baird . Limited regular broadcasts using this system began in 1932, and an expanded service (now named

15458-513: Was divided on how to handle the BBC, but ended up trusting Reith, whose opposition to the strike mirrored the PM's own. Although Winston Churchill in particular wanted to commandeer the BBC to use it "to the best possible advantage", Reith wrote that Stanley Baldwin 's government wanted to be able to say "that they did not commandeer [the BBC], but they know that they can trust us not to be really impartial". Thus

15589-640: Was followed by the Government's acceptance of the recommendation made by the Crawford Committee (1925–26) that the British Broadcasting Company be replaced by a non-commercial, Crown-chartered organisation: the British Broadcasting Corporation. The British Broadcasting Corporation came into existence on 1 January 1927, and Reith – newly knighted – was appointed its first director general. To represent its purpose and (stated) values,

15720-474: Was formed on 12 February 1950, in Torquay with the BBC among the 23 founding broadcasting organisations. Competition to the BBC was introduced in 1955, with the commercial and independently operated television network of Independent Television (ITV) . However, the BBC monopoly on radio services would persist until 8 October 1973 when under the control of the newly renamed Independent Broadcasting Authority (IBA),

15851-524: Was in building a HF transmission and receiving station. The firm began providing automatic telex service in 1971 and in 1980, NET introduced international Direct Dialing and faster telex services between Nigeria and select Western countries. NET also offered private leased telegraph services with annual subscription fees to companies and managed television events transmitted or received via satellite such as FESTAC 77 and sporting events. For much of its existence, NET's facilities were inadequate compared to

15982-539: Was initially managed by the Public Works Department until 1907 when those services were transferred to P & T. In 1908, a manual telephone exchange with a magneto switchboard of 100 lines was introduced in Lagos and by 1920 the estimate of telephone lines in the country was 920, at 920. A year later, a multiple switchboard was introduced with a capacity for 800 lines and in 1941 a point to point connection with

16113-504: Was its first director of music. The company was to be financed by a royalty on the sale of BBC wireless receiving sets from approved domestic manufacturers. To this day, the BBC aims to follow the Reithian directive to "inform, educate and entertain". The financial arrangements soon proved inadequate. Set sales were disappointing as amateurs made their own receivers and listeners bought rival unlicensed sets. By mid-1923, discussions between

16244-575: Was left to BBC Radio broadcasters such as Reginald Foort to keep the nation's spirits up. The BBC moved most of its radio operations out of London, initially to Bristol , and then to Bedford . Concerts were broadcast from the Bedford Corn Exchange ; the Trinity Chapel in St Paul's Church, Bedford was the studio for the daily service from 1941 to 1945, and, in the darkest days of the war in 1941,

16375-473: Was long believed that the former Finnish prime minister Harri Holkeri made the world's first GSM call on 1 July 1991, calling Kaarina Suonio (deputy mayor of the city of Tampere ) using a network built by Nokia and Siemens and operated by Radiolinja . In 2021 a former Nokia engineer Pekka Lonka revealed to Helsingin Sanomat making a test call just a couple of hours earlier. "World's first GSM call

16506-486: Was made explicit for the duration of its current broadcast licence, as was the prohibition on advertising. To avoid competition with newspapers, Fleet Street persuaded the government to ban news bulletins before 7 pm and the BBC was required to source all news from external wire services. The Radio Times , the world's first and longest-running radio and television listings magazine, was launched by Reith in September 1923. The first edition, subtitled "The official organ of

16637-683: Was made from the factory of Marconi Company in Chelmsford in June 1920. It was sponsored by the Daily Mail ' s Alfred Harmsworth, 1st Viscount Northcliffe and featured the famous Australian soprano Dame Nellie Melba . The Melba broadcast caught the people's imagination and marked a turning point in the British public's attitude to radio. However, this public enthusiasm was not shared in official circles where such broadcasts were held to interfere with important military and civil communications. By late 1920,

16768-400: Was modified later on in its life to offer documentaries. In 2002, several television and radio channels were reorganised. BBC Knowledge was replaced by BBC Four and became the BBC's arts and documentaries channel. CBBC , which had been a programming strand as Children's BBC since 1985, was split into CBBC and CBeebies , for younger children, with both new services getting a digital channel:

16899-457: Was reorganised and relaunched in 1995, as BBC Worldwide Ltd. In 1998, BBC studios, outside broadcasts, post production, design, costumes and wigs were spun off into BBC Resources Ltd. The BBC Research & Development has played a major part in the development of broadcasting and recording techniques. The BBC was also responsible for the development of the NICAM stereo standard. In recent decades,

17030-479: Was replaced by BBC Two HD in the same month. On 18 October 2007, BBC Director General Mark Thompson announced a controversial plan to make major cuts and reduce the size of the BBC as an organisation. The plans included a reduction in posts of 2,500; including 1,800 redundancies, consolidating news operations, reducing programming output by 10% and selling off the flagship Television Centre building in London. These plans were fiercely opposed by unions, who threatened

17161-616: Was still inefficient, the lines were congested , the billing system was inefficient and the call completion rate for long-distance calls was below 50%. When new private telephone services emerged in Lagos during the 1990s, many of them depended on an unreliable NITEL for inter-connectivity services. In addition, demand for services in some cities was much higher than the capacity of NITEL while many NITEL lines were inoperative due to lack of maintenance of infrastructure or inadequate supporting cable network infrastructure. In 2002, MTEL which had acquired

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