emergency push-buttons
41Mobile telephony — Mobile phone tower Mobile telephony is the provision of telephone services to phones which may move around freely rather than stay fixed in one location. Mobile phones connect to a terrestrial cellular network of base stations (cell sites),… …
42Walkie-talkie — A walkie talkie (more formally known as a handheld transceiver) is a hand held, portable, two way radio transceiver. Originally developed for the Canadian government during the Second World War by Canadian Donald L. Hings, similar designs were… …
43List of British words not widely used in the United States — Differences between American and British English American English …
44Law enforcement in Japan — Japanese Police logo Aichi Prefectur …
45Video game genres — Part of a series on …
46Railways in Melbourne — Melbourne rail network  City Loop  Caulfield group  Frankston line  Pakenham line  Sandringham line  Cranbourne line …
47Intercom — Call button redirects here. For call buttons provided to patients in a health care setting, see Nurse call button. Intercom system in the Pittock Mansion An intercom (intercommunication device), talkback or doorphone is a stand alone voice… …
48'Allo 'Allo! (series 5) — This article contains episode listings for the fifth series of the British Sitcom series Allo Allo!. The series contains twenty six episodes which first aired between 3 September 1988 and 25 February 1989. Series 5 is longer than any of the other …
49United States Coast Guard — portal Active 4 August 1790–present …
50Colonial Viper — The Colonial Viper is the primary fighter spacecraft type used by the human protagonists in the Battlestar Galactica fictional universe. Appearing in both the 1978 original series and the 2003 reimagined series, as well as various derivative… …
