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. 13, 1990
Filed:
Jan. 16, 1990
Applicant:
Inventors:
Andrew L Aczel, Kanata, CA;
Robert W Pfeffer, Nepean, CA;
Frank Mellor, Ottawa, CA;
Ernst A Munter, Kanata, CA;
Assignee:
Northern Telecom Limited, Montreal, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370 92 ; 370 581 ; 370 941 ;
Abstract
The invention provides a telecommunications system exhibiting an architecture having a plurality of functional levels decoupled from one another by data transport systems. The communication facilities connected to the periphery of the system are terminated at the physical level only and the data is channelized for transmission through a channel switch to a first level of processing that provides channel services. The data is then multiplexed and transmitted to system and call processing resources via a frame transport system.