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message-switched communication system

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  • Communication with submarines — is difficult because radio waves do not travel well through thick electrical conductors like salt water. The obvious solution is to surface and raise an antenna above the water, then use ordinary radio transmissions. Early submarines had to… …   Wikipedia

  • Communications system — Communication system In telecommunication, a communications system is a collection of individual communications networks, transmission systems, relay stations, tributary stations, and data terminal equipment (DTE) usually capable of… …   Wikipedia

  • Message switching — In telecommunications, message switching was the precursor of packet switching, where messages were routed in their entirety, one hop at a time. It was first introduced by Leonard Kleinrock in 1961. Message switching systems are nowadays mostly… …   Wikipedia

  • Message Transfer Part — SS7 protocol suite OSI layer SS7 protocols Application INAP, MAP, IS 41... TCAP, CAP, ISUP, ... Network MTP Level 3 + SCCP Data link MTP …   Wikipedia

  • Optical communication — is any form of telecommunication that uses light as the transmission medium. An optical communication system consists of a transmitter, which encodes a message into an optical signal, a channel, which carries the signal to its destination, and a… …   Wikipedia

  • Embedded system — Picture of the internals of an ADSL modem/router. A modern example of an embedded system. Labelled parts include a microprocessor (4), RAM (6), and flash memory (7). An embedded system is a computer system designed to do one or a few dedicated… …   Wikipedia

  • Global System for Mobile Communication — Das Global System for Mobile Communications (früher Groupe Spécial Mobile, GSM) ist ein Standard für volldigitale Mobilfunknetze, der hauptsächlich für Telefonie, aber auch für leitungsvermittelte und paketvermittelte Datenübertragung sowie… …   Deutsch 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

  • Global System for Mobile Communications — GSM Logo (seit 2000) GSM Logo (bis 2000) Das Global System for Mo …   Deutsch Wikipedia

  • Secure communication — includes means by which people can share information with varying degrees of certainty that third parties cannot know what was said. Other than communication spoken face to face out of possibility of listening, it is probably safe to say that no… …   Wikipedia

  • Mobile operating system — A mobile operating system, also known as a mobile OS, mobile software platform or a handheld operating system, is the operating system that controls a mobile device or information appliance similar in principle to an operating system such as… …   Wikipedia

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