Method for dialing from internet extension to conventional extension

A system for dialing from Internet extension of other SIP proxy server 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...

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Bibliographic Details
Main Authors LIU, BEN CHEN, WANG, YU CHE, CHANG, SHUN CHIEH, HUANG, CHI JUNG, SHEN, LI TE, CHEN, KUAN LIN, HWANG, SHAW HWA
Format Patent
LanguageChinese
English
Published 11.10.2013
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A system for dialing from Internet extension of other SIP proxy server 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.
Bibliography:Application Number: TW200998122179