Standard Telephones and Cables

Standard Telephones and Cables, commonly known as STC, was a British telecommunications equipment manufacturer whose history stretched from the early telephone industry of the 1880s to the consolidation of the global telecoms sector in the early 1990s. The company was established in London in 1883 as International Western Electric, an overseas agent and manufacturing affiliate of the American Western Electric Company. Its initial business involved supplying telephones and telephone exchanges designed in the United States to emerging British telephone companies. As import costs and local production requirements increased, the business acquired a failing cable factory at North Woolwich in 1898 and progressively expanded from distribution into cable manufacture, equipment assembly and engineering. The company became a British-incorporated entity in 1910. During the First World War it contributed cable, wireless and military communications technology to the war effort. The development of radio broadcasting after the war created another growth opportunity. Western Electric technology was used in radio receivers, and the company joined competitors in the consortium that established the British Broadcasting Company in 1922, the predecessor of the modern BBC. STC also commercially exploited electron-tube technology and built a broader portfolio spanning telephony, radio, broadcasting, military communications and transmission systems. A major ownership and identity change occurred in 1925, when Western Electric disposed of its international operations. International Telephone and Telegraph acquired the business and renamed it Standard Telephones and Cables. Under ITT ownership, STC pursued research-led expansion and developed or manufactured multi-channel transmission systems, microwave equipment, coaxial cables, radio systems and electronic components. Brimar, established in 1933, produced American-pattern electron tubes. STC also supplied communications and radio systems for the ocean liners Queen Mary and Queen Elizabeth and undertook substantial military work during the Second World War, including radar, navigational aids, aerial communications and the OBOE bombing-navigation system. After the war, STC participated in the expansion of television broadcasting and supplied equipment used in the United Kingdom's television transmission network, including technology associated with coverage of Queen Elizabeth II's coronation in 1953. Its business also extended to civil aviation, maritime communications, railway signalling and international submarine telephone cables. A production facility opened at Southampton in 1956, and the acquisition of Submarine Cables Ltd in 1970 strengthened STC's position in submarine cable systems. The company became an important supplier of systems linking rivers, coastal waters, the Atlantic and Pacific routes. STC was also a significant participant in the transition from analogue to digital telecommunications. Its engineers developed and patented pulse-code modulation, or PCM, in 1938, although practical implementation had to wait for advances in semiconductor and switching technology. The company installed an early PCM-controlled digital telephone exchange at Moorgate in London in 1971 and was involved with the development of System X, a fully digital public telephone switching system developed with GEC and Plessey. STC's Standard Telecommunication Laboratories in Harlow played a particularly important role in optical communications. In 1966, Charles Kao demonstrated there that glass fibre could carry speech and data over long distances with sufficiently low loss. Commercial fibre-optic deployment followed in Britain in the 1970s, and STC later manufactured equipment and cable used in the country's transition away from metal trunk networks. The company's later history was more difficult. ITT sold most of its STC interest between 1979 and 1982 to raise funds for its own System 12 switching programme.…

Standard Telephones and Cables originated in London in 1883 as International Western Electric, an overseas representative of the Western Electric Company. It sold American-designed telephones and exchanges to British telephone companies at a time when national telephone networks were still fragmented and developing. In 1898 it purchased a failing cable factory at North Woolwich, giving the business a domestic manufacturing base and allowing it to move beyond importation into cable production, equipment assembly and engineering. The business was incorporated in Britain in 1910. The First World War redirected the company's resources toward military communications, cable work and wireless technology. In the post-war period, radio became a major area of activity. Western Electric equipment supported the emerging broadcasting industry, and the company joined a consortium of competitors that established the British Broadcasting Company in 1922. Electron-tube technology, radio receivers and communications equipment broadened the company's technical base. In 1925 Western Electric sold its international operations to International Telephone and Telegraph. ITT renamed the British business Standard Telephones and Cables and encouraged it to operate as a research-oriented international telecommunications manufacturer. During the 1930s STC expanded into multi-channel transmission, microwave communications, coaxial cabling and electron tubes. Brimar was created in 1933 to manufacture American-pattern valves. STC supplied complete radio systems for the Queen Mary and Queen Elizabeth and developed a wide range of communications equipment before and during the Second World War. Wartime work included radar, navigation, aerial communications and the OBOE system. The 1950s brought rapid growth in television transmission and maritime communications. STC equipment was used in British television broadcasting, including the coverage of the 1953 coronation. The company supplied communications systems for ships, civil aviation and railway operations, while its cable activities expanded from domestic and coastal routes to international submarine links. A Southampton manufacturing plant opened in 1956. The 1970 acquisition of Submarine Cables Ltd made STC a major international participant in submarine telecommunications. STC's research laboratories were central to the industry's transition toward digital and optical communications. The company patented pulse-code modulation in 1938, a method of representing analogue voice signals digitally, and eventually produced practical PCM systems as semiconductor technology matured. In 1966 Charles Kao, working at Standard Telecommunication Laboratories in Harlow, demonstrated the feasibility of transmitting information through optical fibre with low enough loss for communications. Commercial fibre links followed in Britain during the 1970s. STC also installed a PCM-controlled digital exchange at Moorgate in 1971 and participated with GEC and Plessey in the development of System X, a digital public telephone switching system. The company's corporate structure changed substantially at the end of the 1970s. ITT sold most of its stake between 1979 and 1982 to finance development of its own System 12 switching platform. STC became independent in 1982 and was listed in London, eventually entering the FTSE 100. It then pursued diversification into computing and acquired ICL, reflecting contemporary expectations that telecommunications and information technology would converge. The strategy came before the market was ready and added financial and managerial complexity. STC was also affected by the loss of business following British Telecom's privatisation, high manufacturing costs, multiple sites and an ageing workforce. Nortel acquired the company in 1991. Its Australian operation had already been sold to Alcatel Australia in 1987. STC therefore ended as an independent corporate brand, although many of its technologies and research achievements influenced later digital, fibre-optic and submarine telecommunications systems.

1. 1991Acquired by Nortel

   Nortel bought STC, ending its existence as an independent public telecommunications manufacturer.

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2. 1982Independent public company

   STC became independent and was listed on the London Stock Exchange after ITT sold most of its interest.

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3. 1977Commercial fibre-optic link installed in England

   A commercial optical-fibre link entered service in England, demonstrating the practical value of STC's research.

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4. 1971PCM digital exchange installed at Moorgate

   STC installed a fully digital PCM-controlled tandem telephone exchange in the City of London.

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5. 1970Submarine Cables Ltd acquired

   The acquisition strengthened STC's position in submarine telecommunications cable systems.

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6. 1966Optical-fibre communications demonstration

   Charles Kao demonstrated at STC's Standard Telecommunication Laboratories that optical fibre could carry voice and data over useful distances.

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7. 1956Southampton production facility opened

   A new production facility supported STC's expanding cable and international communications activities.

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8. 1938Pulse-code modulation patented

   STC patented pulse-code modulation, an important foundation for later digital voice transmission.

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9. 1925Acquired by ITT and renamed STC

   International Telephone and Telegraph acquired Western Electric's international operations and adopted the Standard Telephones and Cables name for the British business.

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10. 1922Participation in the British Broadcasting Company

    STC's predecessor joined competitors in the consortium that established the British Broadcasting Company.

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11. 1910British incorporation

    The business was incorporated as a British legal entity.

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12. 1898North Woolwich cable factory acquired

    The company purchased a failing electrical cable factory and began building a domestic manufacturing capability.

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13. 1883International Western Electric established in London

    Western Electric created a British operation to sell American-designed telephones and exchanges to developing telephone companies.

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An engineering-led telecommunications systems supplier combining telephone and cable manufacturing with advanced research in digital transmission, switching, radio, submarine communications and optical fibre.

• Telephone exchanges and switching systemsTelecommunications infrastructure

  STC manufactured telephone exchange equipment ranging from early electromechanical systems to electronic and digital switching platforms. Its work included TXE4 electronic exchanges, the PCM-controlled Moorgate tandem exchange and participation in System X, a digital switching system developed with GEC and Plessey for the British public telephone network.

• Pulse-code modulation systemsDigital transmission1938

  Pulse-code modulation converted analogue voice signals into digital form for multiplexed transmission. STC patented the technique in 1938 and later developed practical equipment after transistor and semiconductor advances made high-volume digital telecommunications feasible.

• Optical-fibre communicationsTelecommunications transmission1966

  Research at STC's Standard Telecommunication Laboratories helped establish optical fibre as a viable medium for high-speed voice and data transmission. Charles Kao's 1966 demonstration was followed by commercial fibre deployment in England in 1977 and later contributed to the replacement of long-distance metal cable networks.

• Submarine telecommunications cablesUndersea communications

  STC produced and installed submarine cables for telephone and other international communications. The Southampton operation and the 1970 acquisition of Submarine Cables Ltd supported expansion from local and coastal routes to transatlantic and transpacific systems.

• Radio, television and microwave systemsBroadcast and wireless infrastructure

  The company supplied radio receivers, microwave transmission equipment and television broadcasting infrastructure. Its systems were used in British broadcasting and in specialized maritime, aviation and shipboard communications, including radio systems for major ocean liners.

• Military communications and radar equipmentDefence communications

  During both world-war periods, and especially from 1939 to 1945, STC and its predecessor supplied military communications technology. Activities included wireless systems, radar, navigational aids, aerial communications and equipment associated with the OBOE navigation system.

• Electron tubesElectronic components1933

  Through Brimar, established in 1933, STC manufactured electron tubes based on American patterns. These components supported radio, television and communications equipment during the pre-transistor and early post-war eras.

• 1991Sale to NortelM&A

  STC faced financial difficulties, an ageing workforce, expensive production sites, loss of business after British Telecom's privatisation and uncertainty over long-term leadership.

  What changed. Northern Telecom acquired STC.

  Aftermath. STC ceased to operate as an independent corporate brand, while selected capabilities and technology became part of Nortel's business.

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• 1987Sale of the Australian operationM&A

  STC was restructuring its international operations during a period of consolidation in telecommunications equipment.

  What changed. The Australian operation was sold to Alcatel Australia.

  Aftermath. STC's international footprint was reduced before the eventual sale of the remaining company to Nortel.

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• 1987Acquisition of ICLM&A

  STC pursued the contemporary idea that computing and telecommunications would converge into a unified technology industry.

  What changed. STC acquired ICL and attempted to broaden its business from telecommunications equipment into computing.

  Aftermath. The strategy was undertaken before the expected convergence had matured and contributed to financial and managerial strain; ICL was ring-fenced as a profit centre.

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• 1982Separation from ITT and public listingStrategy

  ITT needed cash to support development of its System 12 switching system and reduced its ownership of STC.

  What changed. STC became an independent company and was listed on the London Stock Exchange.

  Aftermath. STC gained access to public capital and for a period became one of the United Kingdom's largest listed companies, including membership of the FTSE 100.

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• 1970Acquisition of Submarine Cables LtdM&A

  International telephone traffic increasingly depended on reliable submarine cable routes.

  What changed. STC acquired Submarine Cables Ltd and expanded its undersea cable activities.

  Aftermath. STC became a major supplier of submarine telecommunications systems spanning regional and intercontinental routes.

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• 1925ITT acquires the international Western Electric operationsM&A

  Western Electric disposed of its international operations, and International Telephone and Telegraph sought to build a worldwide telecommunications manufacturing network.

  What changed. ITT acquired the British operation and renamed it Standard Telephones and Cables.

  Aftermath. The new STC identity became associated with research-driven expansion in telephone equipment, radio, cable, switching and transmission technologies.

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• 1991Nortel acquires Standard Telephones and Cables

  Northern Telecom, later known as Nortel, acquired STC after the British manufacturer experienced financial and strategic difficulties.

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• 1987Alcatel Australia acquires STC's Australian operation

  STC's Australian business was acquired by Alcatel Australia as part of the restructuring and consolidation of international telecommunications equipment operations.

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• 1982STC becomes independent and is listed on the London Stock Exchange

  International Telephone and Telegraph reduced its ownership of STC, allowing the company to become independent and publicly listed in the United Kingdom.

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1. Standard Telephones and Cables
2. STL Harlow Quarter Century Club