Subscriber loop system for voice and data

Details Subscriber loop system for voice and data Subscriber loop system for voice and data

1981-06-16

1983-04-26

Robinson, Thomas A.

Multiplex communications

Wide area network

Packet switching

179 99M, 3701101, H04M 900, H04B 300, H04J 300

Patent

active

043814271

ABSTRACT:
A subscriber loop system in association with a TDM telephone system provides voice and data communication with a remote telephone station set and an associated data port. The subscriber loop system includes a voice path and a data path. Supervisory and signalling circuits in the telephone set are used for generating and registering call control signals pertaining to both voice and data calls. The call control signals are labelled and multiplexed with data signals by local and remote line interface circuits for transmission therebetween. A codec in the voice path is caused to couple call progress signals (i.e. dial tone, ring back) to the telephone set during a data call progress, for audible signalling to a user. Changeover relays are connected in combination with the data path and the line interface circuits such that the line interface circuits are bypassed in the event of power failure of the remote line interface circuit, to provide a more direct connection between the signalling and supervision circuits and the TDM telephone system whereby ordinary voice telephone service is maintained in the event of such failure.

REFERENCES:
patent: 3604857 (1971-09-01), Opferman
patent: 3922491 (1975-11-01), Bjork et al.
patent: 3936602 (1976-02-01), Korver
patent: 4069399 (1978-01-01), Barrett et al.
patent: 4076961 (1978-02-01), Holsinger et al.

Affiliated with

Also associated with

Rating

Subscriber loop system for voice and data does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Subscriber loop system for voice and data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subscriber loop system for voice and data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1565534