Invention Grant
- Patent Title: System for dialing from internet extension to conventional extension
- Patent Title (中): 从互联网扩展到常规扩展的拨号系统
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Application No.: US12585905Application Date: 2009-09-29
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Publication No.: US08488595B2Publication Date: 2013-07-16
- Inventor: Shaw Hwa Hwang , Shun Chieh Chang , Kuan Lin Chen , Chi Jung Huang , Li Te Shen , Ben Chen Liu , Yu Che Wang
- Applicant: Shaw Hwa Hwang , Shun Chieh Chang , Kuan Lin Chen , Chi Jung Huang , Li Te Shen , Ben Chen Liu , Yu Che Wang
- Applicant Address: TW Taipei
- Assignee: National Taipei University of Technology
- Current Assignee: National Taipei University of Technology
- Current Assignee Address: TW Taipei
- Agency: Bacon & Thomas, PLLC
- Priority: TW98122179A 20090701
- Main IPC: H04L12/66
- IPC: H04L12/66
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.
Public/Granted literature
- US20110002326A1 Method for dialing from internet extension to conventional extension Public/Granted day:2011-01-06
Information query
