Automatic signalling-system switching device for digital line ci

Details Automatic signalling-system switching device for digital line ci Automatic signalling-system switching device for digital line ci

1995-03-27

1995-12-05

Hofsass, Jeffery A.

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

379377, 379399, H04M 322

Patent

active

054736820

ABSTRACT:
In an automatic signaling-system switching device provided in a subscriber line circuit between a communications device and an exchange, the subscriber line circuit has a plurality of signaling-system processing units respectively providing processes suitable for a plurality of signaling systems usable in the subscriber line circuit. A first unit is provided for identifying one of the plurality of signaling systems on the basis of a state of the subscriber line circuit. The signaling systems have respective particular states of the subscriber line circuit. A second unit is provided, which selects one of the plurality of signaling system processing units corresponding to the one of the plurality of signaling systems identified by the first unit.

REFERENCES:
patent: 4383316 (1983-05-01), Seidel
patent: 4484036 (1984-11-01), Lyle et al.
patent: 4622680 (1986-11-01), Zinser
patent: 4641318 (1987-02-01), Addeo
patent: 4961185 (1990-10-01), Sawada
patent: 4998273 (1991-05-01), Nichols
patent: 5034978 (1991-07-01), Nguyen et al.
patent: 5133006 (1992-07-01), Khuat
patent: 5142528 (1992-08-01), Kobayashi et al.
patent: 5231649 (1993-07-01), Duncanson
patent: 5253289 (1993-10-01), Tanaka

Affiliated with

Also associated with

Rating

Automatic signalling-system switching device for digital line ci does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic signalling-system switching device for digital line ci, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic signalling-system switching device for digital line ci will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1380094