Design and Implementation of Internet Telephony Services 


Vol. 27,  No. 9, pp. 842-852, Sep.  2002


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  Abstract

The fast advance in the VolP technologies gives a rich opportunity to create different kind of VoIP applica-tions such as IP telephony services. The application level call signaling protocols such as ITU-T H.323 and IETF SIP provide the communication functions of end-to-end call setup and release. Currently, there is a lot of H.323 based VolP products in the market, however SIP is considered as a suitable protocol for supponing applications in IP environments, so SIP based VolP products and services begin to appear. In this paper, firstly we present the characteristics of some possible SIP based applications and describe the design and implementation of a VolP example service named PC-to-PC Internet telephony service using the developed SIP network components. The PC-la-PC Internet telephony service and User Agent are developed in MS window 98/2000 using visual C/C++, and Proxy server and Registrar in Linux 7.0 using C, respectively.

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  Cite this article

[IEEE Style]

J. Yi and S. Kang, "Design and Implementation of Internet Telephony Services," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 9, pp. 842-852, 2002. DOI: .

[ACM Style]

Jong-Hwa Yi and Shin-Gak Kang. 2002. Design and Implementation of Internet Telephony Services. The Journal of Korean Institute of Communications and Information Sciences, 27, 9, (2002), 842-852. DOI: .

[KICS Style]

Jong-Hwa Yi and Shin-Gak Kang, "Design and Implementation of Internet Telephony Services," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 9, pp. 842-852, 9. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880