(Plain Old Telephone System or Service) See PSTN and AMPS.
A Century Ago
At the turn of the 20th century, the \"plain old telephone system\" was neither plain nor old. Instruments such as this Blake wall phone were very high-tech contraptions. (Image courtesy of Nortel Networks.)
A Century Ago
At the turn of the 20th century, the \"plain old telephone system\" was neither plain nor old. Instruments such as this Blake wall phone were very high-tech contraptions. (Image courtesy of Nortel Networks.)
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
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