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:
Apr. 27, 2010
Filed:
Aug. 23, 2006
Sun-loi Lai, Taipei, TW;
Shih-hsiung Weng, Taipei, TW;
Sun-Loi Lai, Taipei, TW;
Shih-Hsiung Weng, Taipei, TW;
Inventec Multimedia & Telecom Corporation, Taipei, TW;
Abstract
A mobile Voice-over-Internet-Protocol (VoIP) phone communication system and method allows users to make mobile communication via mobile VoIP phones. A local mobile VoIP server is established in at least one specific communication zone and at least a central mobile VoIP server for coordinating the local mobile VoIP server in each zone is established. The mobile VoIP phone logins to the local mobile VoIP server in a specific communication zone to which the mobile VoIP phone enters, so the local mobile VoIP server identifies the mobile VoIP server in the zone and stores identification information of the identified mobile VoIP phone. If the mobile VoIP phone moves from a first specific communication zone to a second specific communication zone, the identification information of the mobile VoIP phone is recorded in the local mobile VoIP server in the second specific communication zone and the local mobile VoIP server transmits the identification information to a central mobile VoIP server, such that the central mobile VoIP server stores the identification information.