Pair gain system
First Claim
1. A telecommunications pair gain system comprising a POTS (Plain Old Telephone Service) Pair Multiplexer (PPM), said PPM comprising:
- a plurality of Subscriber Loop Interface Circuits (SLICs), each for connection to one POTS telephone via a loop limited to the length supported by said SLIC;
a Codec implemented on a Digital Signal Processor (DSP) for connection to said plurality of SLICs; and
a modem connected to said Codec for interfacing with a digital transmission system for connection to a central office;
wherein said plurality of SLICs is powered from a single power feed powered from the central office, for driving a lower voltage POTS telephone powering output, because of the loop length limitation.
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Accused Products
Abstract
A telecommunications pair gain system for use when all lines served by the pair gain system are within a limited distance of the pair gain system remote terminal. The distance is such that a lower voltage output from the remote terminal can be used for powering the POTS telephones. Advantageously, a single remote terminal can be used for controlling, for example, 8 POTS lines, at significantly lower expense than would be incurred using standard subscriber loop carrier technology. Advantageously, the loops no longer required for serving all of the 8 POTS lines directly, can be utilized to provide services such as Digital Subscriber Line (DSL) service to other customers without requiring the installation of additional loops between the central office and the remote terminal.
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Citations
5 Claims
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1. A telecommunications pair gain system comprising a POTS (Plain Old Telephone Service) Pair Multiplexer (PPM), said PPM comprising:
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a plurality of Subscriber Loop Interface Circuits (SLICs), each for connection to one POTS telephone via a loop limited to the length supported by said SLIC;
a Codec implemented on a Digital Signal Processor (DSP) for connection to said plurality of SLICs; and
a modem connected to said Codec for interfacing with a digital transmission system for connection to a central office;
wherein said plurality of SLICs is powered from a single power feed powered from the central office, for driving a lower voltage POTS telephone powering output, because of the loop length limitation. - View Dependent Claims (2, 3, 4, 5)
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Specification