Automatic loss control circuit

Details Automatic loss control circuit Automatic loss control circuit

1993-06-28

1995-03-07

Dwyer, James L.

Telephonic communications

Subscriber line or transmission line interface

For line length compensation

379400, 379398, H04M 100, H04M 704

Patent

active

053965531

ABSTRACT:
Disclosed is a circuit for providing an appropriate amount of on-hook loss in a digital loop carder transmission system serving telephone customers. The resistance of the customer loop is measured while the customer is off-hook and an amount of loss is added based on that resistance during the off-hook interval. A predetermined constant loss is then added to the appropriate off-hook loss when the equipment returns to on-hook status.

REFERENCES:
patent: 3881066 (1975-04-01), Macrander et al.
patent: 4320257 (1982-03-01), Warman
patent: 4588856 (1986-05-01), Cohen
patent: 5275705 (1993-12-01), Haughton et al.

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