The KIPS Transactions:PartD (정보처리학회논문지D)

Korea Information Processing Society (한국정보처리학회)
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Design and Implementation of a Video-conference System supporting H.323 and SIP

H.323과 SIP를 지원하는 영상회의 시스템의 설계 및 구현

  • 성동수 (경기대학교 전자공학부)
  • Published : 2003.06.01
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Abstract

Various multimedia application services have been developed with techniques of high speed networks and computer. Among these services, a video-conference system over internet is useful and important, and its standardization has been shown in ITU-T H.323 and IETF SIP. H.323 standardization is currently used in many products, but two standardizations will coexist for a long time. Since the interoperability is needed between two standardizations, H.323-SIP gateway is developed for it. In audition, a video-conference system supporting two standardizations is necessary to be developed. We have implemented the video-conference terminal supporting both ITU-T H.323 and IETF SIP standardizations over internet. The system implementation has been designed using the common modules of two standardizations maximally, and the interoperability among different systems is satisfied through experiments.

고속통신망과 컴퓨터 기술의 발전과 함께 다양한 멀티미디어 응용 서비스가 개발되고 있다. 그 중 인터넷망에서의 영상회의 시스템은 활용도가 매우 뛰어나고 많은 관심을 받고 있으며, 이를 위하여 ITU-T H.323 및 IETF SIP 표준안이 제정되고 있다. 현재는 H.323 표준안이 많이 사용되고 있으나, 2개의 표준안이 상당기간 공존하리라 예상된다. 따라서, 두 표준안 사이에 상호운용이 필요하며, 이를 위하여 H.323-SIP 게이트웨이의 개발이 진행되고 있다. 이와는 별도로 2개의 표준안이 모두 지원되는 영상회의 시스템의 개발도 필요하다. 본 논문에서는 인터넷 환경에서 영상회의 표준안인 ITU-T H.323 및 IETF SIP를 지원하는 영상회의 터미널을 구현한다. 시스템 구현시 2개의 표준안 사이의 공통부분을 최대한 사용하도록 설계하였으며, 실험을 통하여 다른 시스템과 상호운용을 만족함을 알 수 있었다.

Keywords

References

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