Telephone station carrier system

Details Telephone station carrier system Telephone station carrier system

1979-04-25

1980-11-18

Konick, Bernard

Multiplex communications

Wide area network

Packet switching

179170R, H04J 106

Patent

active

042349508

ABSTRACT:
A station carrier telephone system employing single sideband transmission permits optimal utilization of the available frequency spectrum without requiring individual stable subscriber carrier sources by utilizing a common source signal for all subscriber carriers. The common source signal is received via the common transmission line at each subscriber circuit where it is processed and mixed with the similarly received central office carrier to derive a difference frequency signal which serves as the subscriber carrier. In a preferred embodiment sixteen channels share the common transmission line and employ sixteen adjacent subscriber frequency bands and sixteen adjacent central office frequency bands.

REFERENCES:
patent: 3804988 (1974-04-01), Browne

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