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http://dx.doi.org/10.3745/KIPSTC.2005.12C.2.251

Implementation of Extended Automatic Callback Service in SIP-based VoIP System  

Jo Hyun-Gyu (금오공과대학교 대학원 컴퓨터공학과)
Lee Ky-Soo (금오공과대학교 컴퓨터공학부)
Jang Choon-Seo (금오공과대학교 컴퓨터공학부)
Publication Information
The KIPS Transactions:PartC / v.12C, no.2, 2005 , pp. 251-260 More about this Journal
Abstract
On the internet phone or PSTN(Public Switched Telephone Network), the automatic callback is an useful service in the case of busy state when one user calls the other. By using this service, automatic redial is possible when the other party hangs up. However, in the basic automatic callback service, the user who wants callback should wait until the other party hangs up even in the case of emergency. Therefore in this paper, to solve this problem we have extended CPL(Call Processing Language) and, within user system we have included and linked this extended CPL processing module and dialog event package which processes SIP INVITE initiated dialog state informations. We have implemented this system for being used in SIP(Session Initiation Protocol)-based VoIP(Voice over IP) system.
Keywords
자동 콜백 서비스;다이얼로그 이벤트 패키지;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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