Multiple services system using telephone local loop

Details Multiple services system using telephone local loop Multiple services system using telephone local loop

1980-05-30

1982-06-01

Wolff, John H.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

179 2AM, 179 5R, 34087002, H04M 1104

Patent

active

043329802

ABSTRACT:
A multiple services system using telephone lines to supply various data services to subscribers, including alarm surveillance, meter reading, energy management and digital data service, provides a multi-conductor subscriber bus at the subscriber premises for selective connection of plural data service terminals to the system and a switching communication controller at the central office which acts as a concentrator for the transmission of alarm, meter reading and control signals between the subscriber data system and a central control system, while acting as a switch for the connection of the subscriber data system to a data service system for transmission to the subscriber of digital video display data on request. The transmission over the telephone lines is transparent to normal telephone service and all communications within the system, including those on the subscriber bus, are effected in accordance with a predetermined link control protocol.

REFERENCES:
patent: 3883695 (1975-05-01), Bickel et al.
patent: 3937890 (1976-02-01), Blethen et al.
patent: 4086434 (1978-04-01), Bocchi
patent: 4241237 (1980-12-01), Paraskevakos et al.

Affiliated with

Also associated with

Rating

Multiple services system using telephone local loop does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple services system using telephone local loop, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple services system using telephone local loop will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1850937