BT Group
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Anak perusahaan BT Group dikelompokkan di OpenCorporates
| l b Telekomunikasi |
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| Sejarah  |  Suar   Penyiaran  Sistem perlindungan kabel   TV Kabel   Satelit komunikasi   Jaringan komputer  Kompresi data  audio  DCT   gambar   video  Media digital Video Internet  platform video online  media sosial  streaming   Drum  Hukum Edholm   Telegraf listrik   Faks   Heliographs  Hydraulic telegraph  Information Age  Information revolution   Internet   media massa   ponsel Telepon pintar   Telekomunikasi optik  Telegrafi optik  Pager  Photophone   Ponsel prabayar   Radio  Telepon radio   Komunikasi satelit   Semaphore  Semikonduktor  perangkat  MOSFET  transistor  Sinyal asap   Sejarah telekomunikasi  Telautograph  Telegrapi  Teleprinter (teletip)   Telepon  Kasus Telepon    Televisi  digital  streaming   garis telegraf bawah laut   Videotelephony  Bahasa Peluit  Revolusi nirkabel  |  |
| Pelopor |  Nasir Ahmed  Edwin Howard Armstrong  Mohamed M. Atalla  John Logie Baird  Paul Baran  John Bardeen  Alexander Graham Bell  Tim Berners-Lee  Jagadish Chandra Bose  Walter Houser Brattain  Vint Cerf  Claude Chappe  Yogen Dalal  Donald Davies  Lee de Forest  Philo Farnsworth  Reginald Fessenden  Elisha Gray  Oliver Heaviside  Erna Schneider Hoover  Harold Hopkins  pelopor Internet  Bob Kahn  Dawon Kahng  Charles K. Kao  Narinder Singh Kapany  Hedy Lamarr  Innocenzo Manzetti  Guglielmo Marconi  Robert Metcalfe  Antonio Meucci  Jun-ichi Nishizawa  Radia Perlman  Alexander Stepanovich Popov  Johann Philipp Reis  Claude Shannon  Henry Sutton  Nikola Tesla  Camille Tissot  Alfred Vail  Charles Wheatstone  Vladimir K. Zworykin  |  |
|  Transmisi  media |  kabel koaksial  Komunikasi serat optik serat optik  Komunikasi optik ruang bebas  Komunikasi molekuler  Gelombang radio nirkabel  Jalur transmisi sirkuit transmisi data  sirkuit telekomunikasi  |  |
| Topologi jaringan   dan alihan |  Bandwidth   Tautan  Node terminal  Switch jaringaning (sirkuit  paket)  Sentral telepon  |  |
| Multiplexing |  Divisi ruang   Divisi-frekuensi  pembagian-waktu   divisi-polarisasi   momentum sudut orbital   Code-division  |  |
| Konsep |  Protokol komunikasi  Jaringan komputer  Transmisi data  Simpan dan teruskan  Peralatan telekomunikasi  |  |
|  Jenis jaringan |  Jaringan seluler  Ethernet  ISDN  LAN  seluler  NGN  Jaringan telepon umum dan telepon umum  Radio  Televisi  Telex  UUCP  WAN  Jaringan nirkabel  |  |
|  Jaringan penting |  ARPANET  BITNET  CYCLADES  FidoNet  Internet  Internet2  JANET  Jaringan NPL  Usenet  |  |
| Lokasi(menurut wilayah) |   Afrika   Amerika  (  Utara &  Selatan)   Antartika   Asia   Eropa   Oseania  |  |
  Kategori   Garis besar   Portal   Commons 
| l b  Perusahaan Britania Raya di FTSE 100   → FTSE 250 |
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 3i  Admiral Group  Anglo American  Antofagasta  Ashtead Group  Associated British Foods  AstraZeneca  Aviva  BAE Systems  BHP  BP  Barclays  Barratt Developments  Berkeley Group Holdings  British American Tobacco  British Land  BT Group  Bunzl  Burberry  Carnival  Centrica  Coca-Cola HBC  Compass Group  CRH  Croda International  DCC  Diageo  Direct Line Group  easyJet  Evraz  Experian  Ferguson  Fresnillo  GSK  Glencore  GVC Holdings  Haleon  Halma  Hammerson  Hargreaves Lansdown  HSBC  Imperial Brands  Informa  InterContinental Hotels Group  International Airlines Group  Intertek  ITV  Johnson Matthey  Just Eat  Kingfisher  Land Securities  Legal & General  Lloyds Banking Group  London Stock Exchange Group  Marks & Spencer  Melrose Industries  Micro Focus International  Mondi  Morrisons  National Grid  Next  NMC Health  Ocado  Paddy Power Betfair  Pearson  Persimmon  Prudential  Randgold Resources  Royal Bank of Scotland  Reckitt Benckiser  RELX Group  Rentokil Initial  Rightmove  Rio Tinto Group  Rolls-Royce  Royal Dutch Shell  RSA Insurance Group  Sage Group  J Sainsbury  Schroders  Scottish Mortgage Investment Trust  Segro  Severn Trent  Shire  Smith, D.S.  Smith & Nephew  Smiths Group  Smurfit Kappa  SSE  Standard Chartered  Standard Life Aberdeen  St. James's Place  Taylor Wimpey  Tesco  TUI  Unilever  United Utilities  Vodafone  Whitbread  Wood Group  WPP 
| l b Perusahaan telekomunikasi besar |
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Perusahaan dengan pendapatan lebih dari US$10 miliar/tahun
 América Móvil  AT&T  Axiata  Bell Canada  Bharti Airtel  Bharat Sanchar Nigam Limited  BT Group  CenturyLink  China Mobile CMHK  China Telecommunications Corporation China Telecom  China Unicom  Chunghwa Telecom  CK Hutchison 3  Hutchison Asia Telecom Group  Comcast  Deutsche Telekom T-Mobile  Digicel  Globe  Jio  KDDI  KPN  KT Corporation  Liberty Global (Amerika Latin)  Mahanagar Telephone Nigam Limited  MTN  MTS  Nippon  NTT DoCoMo  Oi  Orange S.A.  PCCW  PLDT  Reliance  Rogers  Shaw  Singtel  SK Telecom  SoftBank Mobile  Spark  Swisscom  Tata Teleservices  Telecom Italia  Telefónica  Telenor  Telmex  Telstra  Telus  TPG Telecom  Trilogy International Partners  True  Türk Telekom  VEON  Verizon  Viettel  Vivendi  Vodafone  Vodafone Idea 
 Lihat pula Perusahaan TI terbesar Daftar operator jaringan seluler Daftar perusahaan operator telepon Kategori:Perusahaan telekomunikasi 
| l b Kontraktor Pilihan Keluarga Kerajaan Britania Raya |
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| Dipilih oleh   YM Ratu |  Andrex  Abels Moving Services  Ainsworths  Angostura Limited  AkzoNobel  Autoglym  Axminster Carpets  Bendicks  Bentley Motors  Bollinger  Brasso  Britvic  BT  Burberry  Cadbury  Carphone Warehouse  Castrol  Charbonnel et Walker  Colman's  Dairy Crest  DAKS  DHL Express  Dorma  Elizabeth Arden  Ede & Ravenscroft  Fortnum & Mason  Schwartz  Frank Smythson  GlaxoSmithKline  Gieves & Hawkes  Hardy Brothers  H. P. Bulmer  Heinz  Henry Poole & Co  J. Barbour and Sons  James Purdey and Sons  Jaguar Cars  John Lewis & Partners  John Lobb  Kellogg's  Land Rover  Louis Roederer  Mappin & Webb  Martini & Rossi  McIlhenny Company  Minky  Molton Brown  Moët & Chandon  Nestlé  Parker Pen  Procter & Gamble UK  Richer Sounds  Roberts Radio  Robertson's  Robinsons  Ryvita  Samsung  Schweppes  Silverspoon  Spode  Steinway & Sons  Tanqueray  Tate & Lyle  Twinings  Unilever UK  United Biscuits  Vauxhall Motors  Veuve Clicquot Ponsardin  Waitrose  Weetabix  Wilkin & Sons  William Drake  Wolsey  Worcestershire Medal Service  |        |
| Dipilih oleh   YM Adipati Edinburgh |  Boots Opticians  DAKS  Ede & Ravenscroft  Frank Smythson  Gieves & Hawkes  Hatchards  Holland & Holland  J. Barbour and Sons  James Purdey and Sons  John Lobb  Land Rover  Lyle & Scott  Penhaligon's  Truefitt & Hill  |        |
| Dipilih oleh   YM Pangeran Wales |  Ainsworths  Aston Martin  Autoglym  Bentley Motors  Burberry  Crabtree & Evelyn  DAKS  Ede & Ravenscroft  Frank Smythson  Gieves & Hawkes  Holland & Holland  J. Barbour and Sons  Jaguar Cars  James Purdey and Sons  John Lobb  Land Rover  Laphroaig  Linn Products  Minky  Parker Pen  Penhaligon's  Peter Jones  Ritz Hotel  Roberts Radio  Shepherd Neame  Taylors of Harrogate  Turnbull & Asser  Vauxhall Motors  Waitrose  Weetabix  Winsor & Newton  |        |
  Kategori 
| Pengawasan otoritas  |
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Umum:  ISNI 1  VIAF 1  2  WorldCat (via VIAF) 
Perpustakaan nasional:  Prancis (data)  Amerika Serikat 
Lain-lain:  SUDOC (Prancis) 1