A Design and Implementation of the Real - Time VoIP Terminal System Based on Linux


The KIPS Transactions:PartA, Vol. 8, No. 4, pp. 345-352, Dec. 2001
10.3745/KIPSTA.2001.8.4.345,   PDF Download:

Abstract

In this paper, a VoIP (Voice on Internet Protocol) terminal system, which can process voice in real time based on Linux, is designed and implemented. The hardware of it is designed using a i486 processor and a DSP codec chip which encodes and decodes voice data in real time. As an operating system, RTLinux, which is a real-time operating system based on Linux, is ported to manage real-time voice processing. The voice processing module of the system uses G.723.1 voice codec of ITU-T standard. It transfers voice data within 30ms to assure good voice quality. In order to satisfy the real time requirements and QoS (Quality-of-Service) for the voice data, the real-time voice processing device driver is designed and implemented. To verify the system, the chatting application program is developed and tested for QoS of the system.


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Cite this article
[IEEE Style]
M. K. Lee, S. J. Lee, J. M. Seo, J. Y. Lim, "A Design and Implementation of the Real - Time VoIP Terminal System Based on Linux," The KIPS Transactions:PartA, vol. 8, no. 4, pp. 345-352, 2001. DOI: 10.3745/KIPSTA.2001.8.4.345.

[ACM Style]
Myoung Kun Lee, Sang Jeong Lee, Jung Min Seo, and Jae Yong Lim. 2001. A Design and Implementation of the Real - Time VoIP Terminal System Based on Linux. The KIPS Transactions:PartA, 8, 4, (2001), 345-352. DOI: 10.3745/KIPSTA.2001.8.4.345.