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:
Jun. 02, 1998
Filed:
Jun. 14, 1995
Applicant:
Inventors:
Takeshi Uehara, Tachikawa, JP;
Mamoru Gotoh, Tachikawa, JP;
Assignee:
Fujitsu Limited, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379 88 ; 379134 ; 370230 ; 370522 ;
Abstract
An ISDN exchanger can reduce processing of layer 3 on layer 2 processing to the utmost, and control call congestion with only the layer 2 processing, practically. The ISDN exchanger for regulating call congestion includes a call processing means for processing a call control data or message in an ISDN system as internal processing and a regulating means provided at the previous stage of the call processing means for judging whether or not the number of receiving calls exceeds a prescribed value, and regulating call set up requests without the internal processing when the number of received call set up requests exceeds the prescribed value.