These are explained as following below. First generation (1G) Mobile Phones : Analog Voice 1G system used a single large transmitter and had a single channel, used for both receiving and sending. If a user wants to talk then he has to push the button that enabled the transmitter and disabled the receiver. Such systems were called push-to-talk systems, and they were installed in the late 1950’s. In 1960’s IMTS (Improved Mobile Telephone System) was installed. It also used a high-powered (20-watt) transmitter on top of a hill but it had two f ...
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A voice messaging system. The voice messaging system includes a set of geographically distributed devices in which voice messages are stored and logic that causes voice messages to be stored in res...
the telephone system. It consists of a keyboard, display, and acoustic coupler for a phone... The TTY was supplanted in the 1990s by modern services such as instant messaging on computers...
The transmitter converts the sound waves to electrical signals which are sent through the telecommunications system to the receiving telephone, which converts the signals into audible sound...
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Find sources: "Business telephone system" – news · newspapers · books · scholar · JSTOR ( June 2013 ) (Learn how and when to remove this message ) Early-1970s Telephone Exchange model...
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PC, Telephone, Web Browser 등에서 User가 원하는 형태의 메시지로 변환하여 전송하는 시스템 - 음성... Voice Messaging Service), 팩스서버(FMS, Fax Messaging Service), 전자우편 시스템(E-mail)을 통합한 통신...
"mobile telephone"을 한국어로 번역 ; 핸드폰, 휴대 전화, 휴대폰 은 "mobile telephone"을 한국어로 가장 많이 번역한 것입니다. 샘플 번역 문장: Although mobile telephones are not new, three factors have suddenly increased their popularity. ↔ 이동 전화가 새로운 것은 아니지만, 세 가지 요인이 갑자기 그 인기를 올려놨다.