SMS was considered in the main GSM group as a possible service for the new digital cellular system. The last three words transformed SMS into something much more useful than the electronic paging services used at the time that some in GSM might have had in mind. The definition that Friedhelm Hillebrand and Bernard Ghillebaert brought into GSM called for the provision of a message transmission service of alphanumeric messages to mobile users "with acknowledgement capabilities". The input documents on SMS had been prepared by Friedhelm Hillebrand of Deutsche Telekom, with contributions from Bernard Ghillebaert of France Télécom. The result was approved by the main GSM group in a June 1985 document which was distributed to industry. There were also initial discussions in the subgroup WP3 network aspects chaired by Jan Audestad (Telenor). This proposal was further elaborated in GSM subgroup WP1 Services (Chairman Martine Alvernhe, France Telecom) based on a contribution from Germany. The first proposal which initiated the development of SMS was made by a contribution of Germany and France in the GSM group meeting in February 1985 in Oslo. Through these organizations the technology was made freely available to the whole world. The technical development of SMS was a multinational collaboration supporting the framework of standards bodies. A new network element required was a specialized short message service centre, and enhancements were required to the radio capacity and network transport infrastructure to accommodate growing SMS traffic. Hence, a large base of SMS-capable terminals and networks existed when people began to use SMS. SMS could be implemented in every mobile station by updating its software. Based on his personal observations and on analysis of the typical lengths of postcard and Telex messages, Hillebrand argued that 160 characters was sufficient for most brief communications. However, it was necessary to limit the length of the messages to 128 bytes (later improved to 160 seven-bit characters) so that the messages could fit into the existing signalling formats. In this way, unused resources in the system could be used to transport messages at minimal cost. The key idea for SMS was to use this telephone-optimized system, and to transport messages on the signalling paths needed to control the telephone traffic during periods when no signalling traffic existed. The GSM is optimized for telephony, since this was identified as its main application. The SMS concept was developed in the Franco-German GSM cooperation in 1984 by Friedhelm Hillebrand and Bernard Ghillebaert. should be available in the mobile system." This plan included the exchange of text messages either directly between mobile stations, or transmitted via message handling systems in use at that time. The first action plan of the CEPT Group GSM was approved in December 1982, requesting that "The services and facilities offered in the public switched telephone networks and public data networks . History Initial concept Īdding text messaging functionality to mobile devices began in the early 1980s.
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These were defined in 1986 as part of the Global System for Mobile Communications ( GSM) series of standards.
SMS technology originated from radio telegraphy in radio memo pagers that used standardized phone protocols. An intermediary service can facilitate a text-to-voice conversion to be sent to landlines.
It uses standardized communication protocols that let mobile devices exchange short text messages. SMS ( Short Message Service) is a text messaging service component of most telephone, Internet, and mobile device systems. E.161, a common mobile keypad alphabet layout
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