Technique of controlling telephone calls

Details Technique of controlling telephone calls Technique of controlling telephone calls

1996-01-31

1998-09-15

Loomis, Paul

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Testing of subscriber loop or terminal

379 28, 379 1, 379 9332, 379 9333, 370262, 375225, 358406, 371 55, H04M 124, H04M 1100, H04J 116, H04B 346

Patent

active

058091106

ABSTRACT:
An improved system for minimizing toll charges is disclosed wherein line quality is measured and a call is terminated if the line quality is not at an acceptable level to allow for the highest possible bit rates during data transfer or to guarantee a certain minimum degree of quality.

REFERENCES:
patent: 3962546 (1976-06-01), Hashimoto
patent: 5050004 (1991-09-01), Morton, Jr.
patent: 5134708 (1992-07-01), Marui et al.
patent: 5276529 (1994-01-01), Williams
patent: 5299257 (1994-03-01), Fuller et al.
patent: 5319702 (1994-06-01), Kitchin et al.
patent: 5524122 (1996-06-01), Lepitre et al.

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