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In residential telephony, an extension telephone is an additional telephone wired to the same telephone line as another. In middle 20th century telephone jargon, the first telephone on a line was a "Main Station" and subsequent ones "Extensions" or even called as intercom.
Hand phones might also be referred to as pon-sel (short form of telepon seluler) or telepon genggam ("hold-in-the-hand telephone"). Hunting refers to line hunting, an office line in which multiple individual lines are connected so that an incoming call can roll over to another line if the first line is busy. This permits only one number to be ...
A filename extension, file name extension or file extension is a suffix to the name of a computer file (for example, .txt, .mp3, .exe).The extension indicates a characteristic of the file contents or its intended use.