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:
Nov. 26, 1996
Filed:
Nov. 27, 1992
Masaaki Ishibashi, Tama, JP;
Kazuhisa Shimazaki, Moriguchi, JP;
Satoshi Hioki, Amazaki, JP;
Tsutomu Shimasue, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A private branch exchange system having connected thereto a telephone line of a public telephone network, a plurality of extensions, and at least one attendant console. The private branch exchange system has an attendant console control circuit corresponding to each of the attendant consoles in a main frame of the private branch exchange system. A speech signal from a speech path exchange circuit and control signals are multiplexed at the attendant console control circuit to be sent through a transmission line to the corresponding attendant console, and a speech signal and control signals from the attendant console are multiplexed at the attendant console to be sent through a transmission line to the corresponding attendant console control circuit.