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:
Jul. 16, 2013
Filed:
Sep. 29, 2009
Shaw Hwa Hwang, Taipei, TW;
Shun Chieh Chang, Taipei, TW;
Kuan Lin Chen, Taipei, TW;
Chi Jung Huang, Taipei, TW;
LI Te Shen, Taipei, TW;
Ben Chen Liu, Taipei, TW;
Yu Che Wang, Taipei, TW;
Shaw Hwa Hwang, Taipei, TW;
Shun Chieh Chang, Taipei, TW;
Kuan Lin Chen, Taipei, TW;
Chi Jung Huang, Taipei, TW;
Li Te Shen, Taipei, TW;
Ben Chen Liu, Taipei, TW;
Yu Che Wang, Taipei, TW;
National Taipei University of Technology, Taipei, TW;
Abstract
A system for dialing from Internet extension to conventional extension is disclosed. A VoIP gateway or an IP auto attendant is used for dialing from Internet extension to conventional extension. The phone number of the Private Branch Exchange and the voice guidance are not needed. The calling number of SIP message is interpreted directly and converted into DTMF (Dual-tone multi-frequency) messages for dialing into a conventional extension.