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:
Mar. 01, 1994
Filed:
Oct. 17, 1989
Edouard Issenmann, Le Chesnay, FR;
Maurice Martin, Paris, FR;
Alcatel CIT, Paris, FR;
Abstract
A switching center of the invention includes a service access exchange and a control point which are interconnected by an interconnection multiplex link. The exchange is connected to base station controllers via first multiplex links and to the public switched telephone network by second multiplex links which also convey signalling relating to a permanent file, relating to a temporary file, and relating to other switching centers. The exchange sets up semipermanent links between the interconnection multiplex link connecting it to the control point and both the first multiplex links for the purpose of interchanging signalling, and to the second multiplex links for interchanging signalling with the permanent and temporary files and with other switching centers.