Telephone communication system and method over local area...

Details Telephone communication system and method over local area... Telephone communication system and method over local area...

2005-11-01

2005-11-01

Chin, Wellington (Department: 2664)

Multiplex communications

Phantom

C370S493000, C439S950000, C307S017000

Reexamination Certificate

active

06961303

ABSTRACT:
A method and apparatus for enabling a local area network wiring structure to simultaneously carry digital data and analog telephone signals on the same transmission medium. It is particularly applicable to a network in star topology, in which remote data units (e.g. personal computers) are each connected to a hub through a cable comprising at least two pairs of conductors, providing a data communication path in each direction. Modules at each end of the cable provide a phantom path for telephony (voice band) signals between a telephone near the data set and a PBX, through both conductor pairs in a phantom circuit arrangement. All such communication paths function simultaneously and without mutual interference. The modules comprise simple and inexpensive passive circuit components.

REFERENCES:
patent: 3806814 (1974-04-01), Forbes
patent: 3975594 (1976-08-01), Guntersdorfer
patent: 4173714 (1979-11-01), Bloch et al.
patent: 4510493 (1985-04-01), Bux et al.
patent: 4672605 (1987-06-01), Hustig et al.
patent: 4766402 (1988-08-01), Crane
patent: 4785448 (1988-11-01), Reichert et al.
patent: 4807225 (1989-02-01), Fitch
patent: 4924492 (1990-05-01), Gitlin et al.
patent: 4937811 (1990-06-01), Harris
patent: 5025443 (1991-06-01), Gupta
patent: 5610922 (1997-03-01), Balatoni
patent: 5841841 (1998-11-01), Dodds et al.
patent: 5896443 (1999-04-01), Dichter
patent: 5930340 (1999-07-01), Bell
patent: 5960066 (1999-09-01), Hartmann et al.
patent: 6026078 (2000-02-01), Smith
patent: 6541878 (2003-04-01), Diab
patent: 2002/0159402 (2002-10-01), Binder

Affiliated with

Also associated with

Rating

Telephone communication system and method over local area... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Telephone communication system and method over local area..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Telephone communication system and method over local area... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3498473