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:
Mar. 14, 2006
Filed:
Jan. 11, 1999
Simon Chouldjian, San Francisco, CA (US);
Joseph Chiu, Fremont, CA (US);
Leo Liu, Palo Alto, CA (US);
Simon Chouldjian, San Francisco, CA (US);
Joseph Chiu, Fremont, CA (US);
Leo Liu, Palo Alto, CA (US);
AltiGen Communications, Inc., Fremont, CA (US);
Abstract
A method for generating power signals within a telephone server coupled to a computer system via an interface bus or in-house power connector, to a maximum number of telephones, and to a telephone trunk, the computer system providing a primary voltage signal and a secondary voltage signal, includes receiving the primary voltage signal and the secondary voltage signal from the computer system, generating a ringer power signal in response to the primary voltage, generating a direct inward dialing power signal in response to the primary voltage, the direct inward dialing power signal configured to provide a first operational power signal for telephones from the maximum number of telephones receiving telephone calls directly from the telephone trunk, generating a second operational power signal in response to the primary voltage for telephones from the maximum number of telephones receiving telephone calls from other telephones from the maximum number of telephones, and generating a ringing signal in response to the ringer power signal and to the secondary voltage signal, wherein the ringer power signal powers ringers of no more than approximately one half of the maximum number of telephones at a time.