switched telegraph
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switched telegraph communication — perjungiamasis telegrafo ryšys statusas T sritis radioelektronika atitikmenys: angl. switched telegraph communication vok. Vermittlungstelegrafenverkehr, m rus. коммутируемая телеграфная связь, f pranc. liaison télégraphique à commutation, f … Radioelektronikos terminų žodynas
telegraph — telegrapher /teuh leg reuh feuhr/; esp. Brit., telegraphist, n. /tel i graf , grahf /, n. 1. an apparatus, system, or process for transmitting messages or signals to a distant place, esp. by means of an electric device consisting essentially of a … Universalium
Telegraph sounder — A Telegraph sounder is a device which produces an audible sound when connected to an operating electrical telegraph. It is similar in form to a relay. When a current flows through the induction coil, the resulting magnetic field attracts an… … Wikipedia
Electrical telegraph — A printing electrical telegraph receiver, and a transmitter key at bottom right An electrical telegraph is a telegraph that uses electrical signals, usually conveyed via telecommunication lines or radio. The electromagnetic telegraph is a device… … Wikipedia
Russian–American Telegraph — Painting of men working on the Collins Overland telegraph line, by John Clayton White. The Russian–American Telegraph, also known as the Western Union Telegraph Expedition and the Collins Overland Telegraph, was a $3,000,000 undertaking by the… … Wikipedia
Nippon Telegraph and Telephone — NTT redirects here. For other uses, see NTT (disambiguation). Nippon Telegraph and Telephone Corporation 日本電信電話株式会社 Type Public Traded as TYO … Wikipedia
New England Telephone and Telegraph Company — The New England Telephone and Telegraph Company was a very early company set up to develop the then new telephone. New England Telephone and Telegraph lasted only a year as a separate entity, from 1878 to 1879, and had no direct relationship with … Wikipedia
Public switched telephone network — The public switched telephone network (PSTN) is the network of the world s public circuit switched telephone networks. It consists of telephone lines, fiber optic cables, microwave transmission links, cellular networks, communications satellites … Wikipedia
Packet switched network — A Packet Switched Network, or PSN, refers to the packet switched networks that existed before the Internet. The history of such networks can be divided into three eras:early networks before the introduction of X.25 and OSI,the X.25 era when many… … Wikipedia
Maritime Telephone and Telegraph Company — Former MT T Logo Last MTT Logo Maritime Telephone and Telegraph Company ( … Wikipedia
Lancashire Telegraph — Infobox Newspaper name = type = Local Newspaper format = Tabloid foundation = 1886 owners = Newsquest Media Group Gannett political = Centre price = 38p headquarters = 1 High Street, Blackburn editor = Kevin Young ISSN = 1746 0522 website = [http … Wikipedia
