![]() ![]() 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. Short Message/Messaging Service, commonly abbreviated as SMS, 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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