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. 23, 1999
Filed:
Sep. 25, 1996
Applicant:
Inventor:
Bjorn Erik Jonsson, Jarfalla, SE;
Assignee:
Telefonaktiebolaget LM Ericsson, Stockholm, SE;
Primary Examiner:
Int. Cl.
CPC ...
H04Q / ;
U.S. Cl.
CPC ...
455459 ; 340905 ;
Abstract
A slave switch having a number of connections for traffic with switch-external users, and a number of extensions intended for connection with switch-internal users, is disclosed. The slave switch is characterized in that it is constructed to initiate originating calls only, and in that the switch includes by-pass signalling means. A method of communication between the slave switch and a master switch is also disclosed.