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Glossary1 3 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Plain Old Telephone Service (POTS) is voice-grade telephone service employing analog signal transmission over copper loops. POTS was the standard service offering from telephone companies from 1876 until 1988 when the now-obsolete Integrated Services Digital Network (ISDN) Basic Rate Interface (BRI) was introduced.