표제지
목차
국문요약 10
I. 서론 12
II. 이론적 배경 14
2.1. 메신저의 개요 14
2.2. 메신저 기반 영상회의 16
2.3. 영상회의 시스템의 개요 18
2.4. 영상회의 시스템의 구축형태 비교 20
2.5. 메신저와 영상회의 시스템의 상호운용성 23
III. 연동관련 기술요소 26
3.1. 다지점 제어 장치의 기능 26
3.2. 웹 서비스 기반의 API 28
IV. 제안하는 시스템의 구현 및 성능평가 31
4.1. 연동 방안 31
4.2. 연동을 위한 서버의 구성 34
4.3. 연동 메시지 구조 37
4.4. 실행결과 40
4.5. 성능평가 43
V. 결론 49
참고문헌 51
부록 53
ABSTRACT 63
Table 1. Compare H/W and S/W video conference 21
Table 2. Specification of standard MCU 27
Table 3. Environment of interworking system 34
Table 4. Specification of Avaya's Elite 5230 MCU 35
Table 5. Environment of Avaya's MCU control system 35
Table 6. Parameters of Create Conference 38
Table 7. Parameters of Terminate Conference 39
Table 8. Specification of system for evaluating the performance 44
Figure 1. Basic structure of the messenger system 15
Figure 2. Basic structure of video conference using messenger 16
Figure 3. Structure of multilateral video conference using P2P 17
Figure 4. Basic structure of video conference system in H/W based 20
Figure 5. Basic structure of video conference system in S/W based 21
Figure 6. Microsoft's UC Solution 24
Figure 7. Function of standard MCU 26
Figure 8. Web service Model 28
Figure 9. Avaya's API Architecture 29
Figure 10. Video conference system using MCU in messenger 31
Figure 11. Sequence diagram for a video conference 32
Figure 12. Block diagram for interworking 36
Figure 13. Message for creation of conference on MCU 37
Figure 14. Message for termination of conference on MCU 39
Figure 15. Preparation for creation of conference from messenger 40
Figure 16. Invited to a conference at the server for notification 41
Figure 17. Video conference in virtual room of MCU 42
Figure 18. CPU load due to P2P 45
Figure 19. CPU load due to MCU 45
Figure 20. Compare P2P and MCU based on CPU load 46
Figure 21. Network traffic due to P2P 46
Figure 22. Network traffic due to MCU 47
Figure 23. Compare P2P and MCU based on network traffic 47