STANDBY HIGH VOLTAGE ANALOG LINE FEED

STANDBY HIGH VOLTAGE ANALOG LINE FEED

A standby feed circuit for a subscriber line comprising a constant current power feeding circuit for a subscriber line for supplying a voltage to a subscriber line at a voltage less than a standard central office power feeding circuit, a voltage source for providing the standard voltage, apparatus f...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SETO, CHUK WALLY, GANCARCIK, EDWARD P
Format: Patent
Sprache:eng ; fre
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
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Beschreibung
Zusammenfassung:A standby feed circuit for a subscriber line comprising a constant current power feeding circuit for a subscriber line for supplying a voltage to a subscriber line at a voltage less than a standard central office power feeding circuit, a voltage source for providing the standard voltage, apparatus for applying the standard voltage when a station apparatus connected to the subscriber line is in an on-hook condition, and apparatus for applying said voltage less than the standard voltage in place of the standard voltage when the station apparatus is in an off-hook condition.