Fail safe voice system for integrated services for digital network subscribers
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United States of America Patent
Stats
-
Aug 1, 1989
Grant Date -
N/A
app pub date -
Mar 24, 1988
filing date -
Mar 24, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fail safe voice system and method for digital telephone networks. The system provides for operation of voice telephone equipment at a customer location when a fault occurs at the customer location. The system has a central office with an analog line termination/digital transceiver connected to subscriber loop lines. The customer location has a digital transceiver/analog station set interface connected to the subscriber loop lines and to the voice telephone equipment. In response to a fault at the customer location the voice telephone equipment is connected directly to the subscriber loop lines thereby eliminating the digital transceiver/analog station set interface.
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