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:
Jan. 02, 1996
Filed:
Aug. 26, 1991
Applicant:
Inventors:
Samuel Maedjaja, Lynchburg, VA (US);
Houston H Hughes, III, Lynchburg, VA (US);
Assignee:
Ericsson Inc., Research Triangle Park, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370 951 ; 455 17 ;
Abstract
A gateway between a non-trunked ('conventional') RF communication system and digitally trunked RD communication system maps between trunked group IDs and non-trunked subaudible signalling tone frequencies. An interface between the two systems thus forms a 'super group' including both trunked and non-trunked radios that can automatically communicate together. The gateway permits a customer to continue to use non-trunked components, and to cost-effectively integrate such components into a state-of-the-art trunked radio communications system.