| 词条 | Telecommunication circuit |
| 释义 |
A telecommunication circuit is any line, conductor, or other conduit by which information is transmitted.[1] Originally, this was analog, and was often used by radio stations as a studio/transmitter link (STL) or remote pickup unit (RPU) for their audio, sometimes as a backup to other means. Later lines were digital, and used for private corporate data networks. A leased line is a circuit that is dedicated to only one use. The opposite of a dedicated circuit is a switched circuit, which can be connected to different paths. A POTS or ISDN telephone line is a switched circuit, because it can connect to any other telephone number. On digital lines, a virtual circuit can be created to serve either purpose, while sharing a single physical circuit. DefinitionsA telecommunication circuit may be defined as follows:
See also
References1. ^{{Cite book|url=http://www.ie.itcr.ac.cr/acotoc/Maestria_en_Computacion/Sistemas_de_Comunicacion_II/Material/Biblio5.pdf|title=Fundamentals of Telecommunications|last=Freeman|first=Roger L.|publisher=John Wiley & Sons, Inc.|year=1999|isbn=0471296996|location=|pages=1}} {{FS1037C MS188}}{{telecomm-stub}} 1 : Telecommunications equipment |
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