Telephonic communications – Subscriber line or transmission line interface – Network interface device
Patent
1997-08-29
2000-10-31
Isen, Forester W
Telephonic communications
Subscriber line or transmission line interface
Network interface device
379142, 379377, 379380, H04M 156, H04M 1506, H04M 100, H04M 300
Patent
active
061414166
ABSTRACT:
An analog telephone subscriber terminal apparatus with means for realizing additional functions is provided. In the on-hook state of the subscriber terminal apparatus, and outside of the idle operating state of the subscriber terminal apparatus, a current supply device that draws current from the subscriber line and is integrated into the terminal apparatus is switched effective for the duration of the reception of data containing the additional functions. The current supply device provides the supply current to the means for realizing the additional functions, but is limited to such an extent that the increased subscriber line loop current that then flows is not indicated as a loop closure.
REFERENCES:
patent: 4242539 (1980-12-01), Hashimoto
patent: 4320258 (1982-03-01), McDonald
patent: 4547629 (1985-10-01), Corless
patent: 5117452 (1992-05-01), Callele et al.
patent: 5263084 (1993-11-01), Chaput et al.
patent: 5461670 (1995-10-01), Consiglio et al.
patent: 5546448 (1996-08-01), Caswell et al.
patent: 5553138 (1996-09-01), Heald et al.
patent: 5659602 (1997-08-01), Gay
patent: 5771281 (1998-06-01), Batten, Jr.
Isen Forester W
Saint-Surin Jacques M.
Siemens Aktiengesellschaft
LandOfFree
Analog telephone subscriber terminal apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Analog telephone subscriber terminal apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analog telephone subscriber terminal apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2062420