Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Patent
1996-11-07
1999-09-28
Chan, Wing F.
Telephonic communications
Telephone line or system combined with diverse electrical...
Having transmission of a digital message signal over a...
379 9001, 370488, H04M 1100
Patent
active
059600667
ABSTRACT:
A system for deriving multiple channels from four-wire residential telephone wiring. The invention provides two voice channels and two, or more, data channels on common residential telephone wiring. The voice channels occupy a normal telephone bandwidth, in the range of approximately zero Hz to 3500 Hz. Within this channel placement, ordinary telephonic devices can use the channels, without a requirement of frequency-shifting. Above these voice-channel frequencies, data channels are provided, for internal communication within the residence.
REFERENCES:
patent: 4459434 (1984-07-01), Benning et al.
patent: 4538031 (1985-08-01), Benning et al.
patent: 4628153 (1986-12-01), Daly
patent: 4706244 (1987-11-01), Watson et al.
patent: 4739205 (1988-04-01), Fuhrman
patent: 4776006 (1988-10-01), Comerford et al.
patent: 4785448 (1988-11-01), Reichert et al.
patent: 4901342 (1990-02-01), Jones
patent: 5010399 (1991-04-01), Goodman et al.
patent: 5125026 (1992-06-01), Holcombe
patent: 5596631 (1997-01-01), Chen
Hartmann James Joseph
Stahl Thomas Anthony
Chan Wing F.
Grillo Anthony
Lucent Technologies - Inc.
Welte Gregory A.
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