Digital added main line system

Multiplex communications – Wide area network – Packet switching

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Details

370118, 375240, 375286, 379 93, 379399, 379402, 455343, 341126, H04J 300, H04M 100, H04Q 500, H04L 2534

Patent

active

054597307

ABSTRACT:
A method and apparatus for transmitting and receiving multiple telephone transmission signals over a single twisted pair. An analog signal from a local switching station is converted to an 80 kbits/sec signal for transmission over a twisted pair. A remote terminal converts the 80 kbits/sec signal back into a conventional analog signal for use in conventional telephone, facsimile or other related equipment.

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