The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 1991
Filed:
Feb. 02, 1990
Didier Helou, Saint Cyr L'Ecole, FR;
Jean-Yves Peron, Lannion, FR;
Rene Coutin, Guingamp, FR;
Georges Thiebaut, Perros Guirec, FR;
Alcatel Cit, Paris, FR;
Abstract
A central switching facility is constituted by two switching networks connected to each of the connection units via two connection circuits. A connection circuit selects on a timeslot-by-timeslot basis which output network link is to be used for conveying each time slot to the connection unit. On an instruction from the switching network, a connection circuit operates, in a message mode, on one of the time slots selected from those which it processes, and it sends monitoring information to the switching network via control bits in that time slot. An instruction bit, selecting a message mode or a normal mode, is included in each frame transmitted from the switching network to a connection circuit.