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:
Aug. 03, 1993
Filed:
May. 28, 1991
France Telecom - Centre National d'Etudes des Telecommunications, Moulineaux, FR;
Abstract
In a telephone installation, telephone rental data is loaded remotely into an independent station in the following manner. In response to a request for a call coming from the independent station and in the presence of a load request signal, a control means searches all the telephone rental data relative to the independent station as well as that indicating an order for the remote loading. A coding means codes with the help of a special key data which is secret. A processing means authorises the transmission of non-secret pubic telephone rental data as well as secret data thus encoded to the said independant station according to the order for the remote loading. At the independent station a decoding means deciphers the coded secret telephone rental data thus received with the help of the special key and a processing means stores the non-secret public telephone rental data thus transmitted and secret data thus decoded in a memory of the independent station.