End office of a telephone system with a zero loss plan

Telephonic communications – Subscriber line or transmission line interface – Network interface device

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Details

379402, 379406, 370 321, 370 32, H04M 1100

Patent

active

054871093

ABSTRACT:
An end office of a telephone system in which the end office is operated based on a zero loss plan which requires that the line side equipment be exclusive of any means for introducing loss into the receive paths established in the line side equipment for the subscriber locations served by the end office switch.

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patent: 5195132 (1993-03-01), Bowker et al.
patent: 5283784 (1994-02-01), Genter
patent: 5315641 (1994-05-01), Montgomery et al.
patent: 5333195 (1994-07-01), Bowker et al.
patent: 5337306 (1994-08-01), Hall

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