Design and Implementation of Multipoint Videoconferencing System using H.323

H.323을 지원하는 다자건 영상회의 시스템의 설계 및 구현

  • 성동수 (경기대학교 전자공학과) ;
  • 김홍래 ((주)하이퍼정보통신) ;
  • 허미영 (한국전자통신연구원 정보화기술연구본부 정보통신표준연구센터) ;
  • 함진호 (한국전자통신연구원 정보화기술연구본부 정보통신표준연구센터)
  • Published : 2000.07.01

Abstract

A various multimedia application services are developed wiht techniques of high speed networks and computer. Especially the videoconference system is important and useful in a remote discussion with multiple users. A vidoconferencing system in local area network used in corporation and university is useful and important. A standardization for it should be showed in ITU. Recommendation H.323 describes terminals, equipment, and services for videoconference over communication networks which do not provide a guaranteed Quality of Services for videoconference over communication networks which do not provide a guaranteed Quality of Service. In this paper, we introduce ITU-T H.323 which is the standardization over internet, and show a multipoint videoconferencing system and peer to peer videophone system using the ITU-T H.323.

Keywords

References

  1. ITU-T Recommendation H.323, Visual Telephone Systems and Equipment for Local Area Networks which Provide a Non-Guaranteed Quality of Service, 1996
  2. ITU-T Recommendation H.225.0, Media Stream Packetization and Synchronization on Non-Guaranteed Quality of Service LANs, 1996
  3. ITU-T Recommendation H.245, Control Protocol for Multimedia Communication, 1996
  4. ITU-T Recommendation Q.931, Digital Subscriber Signalling System No.1 (DSS 1) ISDN User-Network Interface Layer 3 Specification for Basic Call control, 1993
  5. RFC 1889 : RTP : A Transport Protocol for Real-Time Applications
  6. RFC 1890 : RTCP : A Transport Control Protocol for Real-Time Applications
  7. ITU-T Recommendation T.120, Data Protocols for Multimedia Conferencing, 1996
  8. 성동수, 함진호, '집중식 영상회의를 위한 다지점 제어 장치의 구현 방안', 정보처리학회 논문집, 제2권 제3호, pp.277-287, 1995
  9. 박승민, 김두현, 이호걸, '인터넷 영상회의 표준 기술 동향', 정보과학회지, 제15권 제6호, pp.52-60, 1997.6
  10. 김계환, 한근희, 박승민, 궁상환, 'H.225.0 영상 회의 호처리 프로토콜 구현', 한국정보처리학회 '97 추계 학술 발표논문집, 제4권 제2호, pp.85-88, 1997
  11. 성동수, 김수연, 현동환, 함진호, '다지점 멀티미디어회의 시스템을 위한 ITU-T T.123, T.122/T.125의 구현 및 상호운용성 시험', 정보과학회 논문지(C), 제4권 제2호, pp.228-240, 1998
  12. http://www.,databeam.com
  13. http://www.microsoft.com/netmeting/
  14. http://standards.pictel.com
  15. http://www.radvision.com
  16. http://www.imtc.org
  17. ITU-T Draft Recommendation T.130, Audio-Visual Control for Multimedia Conferencing Architecture & Overview
  18. ITU-T Draft Recommendation T.131, Real Time Audio Visual Control for Multimedia Conferencing, Network Specific Mappings
  19. ITU-T Draft Recommendation T.132, Audio-Visual Control, Service & Protocol