P2P/SIP ±â¹ÝÀÇ Internet Telephony ±¸Çö
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VoIP(Voice over Internet Protocol) ±â¼úÀº IP¸Á¿¡¼­ À½¼ºµ¥ÀÌŸ(¾Æ³¯·Î±× ½ÅÈ£)¸¦ ÆÐŶÀ¸·Î º¯È¯½ÃÄÑ µðÁöÅÐ µ¥ÀÌÅÍ·Î Àü¼ÛÇÏ´Â °ÍÀÌ´Ù. ±âÁ¸ ÀüÈ­¼± °°Àº °æ¿ì ȸ¼±À» Çѹø Á¡À¯ÇÏ¸é ´Ù¸¥ µ¥ÀÌŸÀÇ ÁøÀÔÀÌ ºÒ°¡´ÉÇÏ°í ȸ¼±ÀÇ °¡¿ë¼ºÀÌ ¶³¾îÁö¸ç ºñ¿ë ¶ÇÇÑ ¸¹ÀÌ µç´Ù. ±×·¯³ª VoIP¸¦ ÀÌ¿ëÇÏ¸é µ¥ÀÌŸÀÇ À̵¿ÀÌ °øÀ¯°¡ µÇ°í Àú·ÅÇϸç È®À强ÀÌ ¶Ù¾î³ª´Ù´Â ÀåÁ¡À» °¡Áö°í ÀÖ´Ù. ±×¸®°í ´ÙÀÚ°£ ÅëÈ­°¡ °¡´ÉÇÏ¿© conferencing system¿¡ »ç¿ëÇÒ ¼ö ÀÖ´Ù. ±âÁ¸ÀÇ ¿©·¯°¡Áö Á¦Ç°µéÀº ÁÖ·Î H.323 ÇÁ·ÎÅäÄÝÀ» »ç¿ëÇؼ­ VoIP¸¦ ±¸ÇöÇß°í, ¿äÁîÀ½ °¢±¤¹Þ°í ÀÖ´Â Skype´Â µ¶ÀÚÀûÀÎ ÇÁ·ÎÅäÄÝÀ» °³¹ßÇؼ­ ȹ±âÀûÀÎ ¼­ºñ½º¸¦ ÇÏ°í ÀÖ´Ù. À̹ø ÇÁ·ÎÁ§Æ®¿¡¼­´Â ÇöÀç Â÷¼¼´ë VoIP ±â¼úÀ» ±¸ÇöÇϱâ À§ÇÑ IETF ÀÇ Ç¥ÁØ ÇÁ·ÎÅäÄÝÀÎ SIP¸¦ ÀÌ¿ëÇؼ­ Internet Telephony¸¦ ±¸ÇöÇÏ°í ´ÙÀÚ°£ ÅëÈ­¸¦ Áö¿øÇϱâ À§ÇØ Peer-to-Peer ±â¼úÀ» µµÀÔÇؼ­ Á¦ÇÑµÈ Network bandwidth³»¿¡¼­ ÃÖ´ëÇÑ ¸¹Àº »ç¶÷ÀÌ µ¿½Ã ´ëÈ­¸¦ ÇÒ ¼ö ÀÖ´Â ½Ã½ºÅÛÀ» ±¸ÇöÇÑ´Ù.

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    2005.3.16 -2005.12.10 (9 °³¿ù)

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  • SIP Protocol À» ÀÌ¿ëÇÑ 1:1 ´ëÈ­ ½Ã½ºÅÛ
  • Peer-to-Peer ¾Ë°í¸®ÁòÀ» Àû¿ëÇÑ ´ÙÀÚ°£ ´ëÈ­ ½Ã½ºÅÛ
  • À½¼ºµ¥ÀÌŸ¿Í ¿µ»ó µ¥ÀÌŸ¸¦ ½Ç½Ã°£À¸·Î ÁÖ°í ¹ÞÀ» ¼ö ÀÖ´Â ½Ã½ºÅÛ

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    2005/4/30

    VoIP ±â¼ú ºÐ¼®, SIP, RTP ºÐ¼®
    Project Proposal ÀÛ¼º ¹× Àüü ½Ã½ºÅÛ ¿ä±¸»çÇ× ºÐ¼®

    2005/6/10 SIP¸¦ ÀÌ¿ëÇÑ 1:1 ´ëÈ­ ½Ã½ºÅÛ±¸Çö
    Àüü ½Ã½ºÅÛ ¿ä±¸»çÇ× ºÐ¼® ¹× High Level Design
    2005/7/20 Detailed Design
    2005/9/30 Implementation
    2005/11/20 Integration and Test
    2005/11/30 º¸°í¼­ ÀÛ¼º

¿¬±¸ °á°ú¹°

documents

  • Request For Project
  • Project Proposal
  • Requirement Analysis
  • High Level Design
  • Detailed Design
  • Implementation
  • Integration and Test
  • Final Report and Demo

Âü¿© ¿¬±¸¿ø

Meeting Schedule & Report

Á¤±â ¹ÌÆà ½Ã°£ : Fri, 10:00 - 12:00 (AM)

BBS

References

Papers & Documents

Papers
  1. Kundan Singh and Henning Schulzrinne, "Peer-to-Peer Internet Telephony using SIP"
  2. David A. Bryan and Bruce B. Lowekamp, "SOSIMPLE: A SIP/SIMPLE Based P2P VoIP and IM System"
  3. Salman A.Baset and Henning Schulzrinne, "An Analysis of the Skype Peer-to-Peer Internet Telephony Protocol", Department of Computer Science, Columbia University, New York NY 10027, September 15, 2004
  4. Dennis Bergstrom, "An analysis of Skype VoIP application for use in a corporate environment", CISSP, October 2004
  5. Xiaotao Wu and Henning Schulzrinne, "Feature Interactions in Internet Telephony End Systems", Department of Computer Science, Columbia University, January 24, 2004
  6. Henning Schulzrinne, Sankaran Narayanan, Jonathan Lennox and Michael Doyle, "SIPStone - Benchmarking SIP Server Performance", Columbia University, Ubiquity, March 10, 2002
  7. Kundan Singh and Henning Schulzrinne, "Failover and Load Sharing in SIP Telephony", Department of Computer Science, Columbia University
  8. Kundan Singh and Henning Schulzrinne, "Unified Messaging using SIP and RTSP", Deptment of Computer Science, Columbia University, NY, USA, October 11, 2000
  9. Xiaotang Zhang and Henning Schulzrinne, "Voice over TCP and UDP", Department of Computer Science, Columbia University, September 28, 2004
  10. Xiaota Wu, Henning Schulzrinne, "Service Learning in Internet Telephony", Department of Computer Science, Columbia University
  11. Joao Paulo Sousa, "An Iptel Architecture Based on the SIP Protocol", Instituto Politecnico de Braganoa
  12. Feng Liu, Wu Chou, Li Li and Jenny Li, "WSIP - Web Service SIP Endpoint for Converged Multimedia/Multimodal Communication over IP", Avaya Labs Research, 233 Mt. Airy Road, Basking Ridge, NJ 07920, USA
  13. Kundan Singh, Gautam Nair, and Henning Schulzrinne, "Centralized Conferencing using SIP", in Internet Telephony Workshop, New York, April 2001
  14. Stefan Berger, Henning Schulzrinne, Stylianos Sidiroglou, and Xiaotao Wu, "Ubiquitous Computing Using SIP", in ACM NOSSDAV 2003, Monterey, California, USC, June 2003
  15. Gonzalo Camarillo, Henning Schulzrinne, and Raimo Kantola, "Signalling Transport Protocols", Dept. of Computer Science, Columbia University, New York, Technical report, February 2002
  16. Petri Koskelainen, Henning Schulzrinne, and Xiaotao Wu, "A SIP-based Conference Control Framework", in Proc, International Workshop on Network and Operating System Support for Digital Audio and Video(NOSSDAV), Miami Beach, Florida, May 2002
  17. Jonathan Lennox and Henning Schulzrinne, "Feature Interaction in Internet Telephony", in Feature Interaction in Telecommunications and Software Systems VI, Glasgow, United Kingdom, May 2000
  18. Jonathan Lennox and Henning Schulzrinne, "A Protocol for Reliable Decentralized Conferencing", in ACM NOSSDAV 2003, Monterey, California, USC, June 2003
  19. Henning Schulzrinne and Knarig Arabshian, "Providing Emergency Services in Internet Telephony", IEEE Internet Computing, vol. 6, pp. 39-47, May 2002
  20. Henning Schulzrinne and J. Rosenberg, "Internet Telephony: Architecture and Protocols -- an IETF perspective," Computer Networks and ISDN Systems, vol. 31, no. 3, pp. 237-255, February 1999

Documents
  1. SIP Tutorial : SIP¿¡ °üÇÑ ´Ù¾çÇÑ Protocol ¼³¸í°ú °ü·Ã ³»¿ë
  2. SIP Products : SIP¸¦ ÀÌ¿ëÇÑ Product¸¦ ¸¸µç °÷¿¡ ´ëÇÑ Á¤º¸
  3. Skype Conferencing Test : Skype¿¡¼­ conferencing À» »ç¿ëÇغ¸°í ¾´ ¹®¼­
  4. VoIP and Skype Security : General VoIP¿¡ ´ëÇÑ ¼Ò°³¿Í Skype¿Í ´Ù¸¥ application¿¡ ´ëÇÑ ºñ±³ (by Simson L. Garfinkel)
  5. Multimedia Over IP : RTP, RTCP, SIP, RSTP¿¡ ´ëÇÑ ¼³¸íÇÑ ÆÄ¿öÆ÷ÀÎÆ® ¹®¼­
  6. Realtime Audio and Video : Realtime Audio¿Í Video¸¦ ´Ù·ç´Â ±â¼ú¿¡ ´ëÇÑ ¹®¼­
  7. SIP Cartoon : SIP ¼­ºñ½º¿¡ ´ëÇÑ °£·«ÇÑ ¸¸È­

Links

SIP
Session Initiation Protocol(SIP) Charter ( www.ietf.org/html.charters/sip-charter.html )
SER(SIP Express Router) ( www.iptel.org )
Asterisk ( www.asterisk.org )
VOCAL ( www.vovida.org )
SIP Wiki ( www.toyz.org/cgi-bin/sipwiki.cgi )
SIP Forum ( www.sipforum.org )
MPEG4IP - Open Streaming Video and Audio ( www.mpeg4ip.net )
SIP.edu : Voice Over IP Working Group ( voip.internet2.edu/SIP.edu )
Open Directory : SIP products ( dmoz.org/Computers/Internet/Protocols/SIP/ )

VoIP
voip-info.org ( www.voip-info.org )
VoIP Howto ( www.tldp.org/HOWTO/VoIP-HOWTO.html )
VoIP forum( www.voip-forum.or.kr )

Telephony(VoIP Software)
Skype
Brekeke - VoIP software ( www.brekeke.com )
SIPRequest ( www.siprequest.com )

RTP, RTSP, RTCP
About RTP and the Audio-Video Transport Working Group ( www.cs.columbia.edu/~hgs/rtp )
RTP, Real-time Transport Protocol ( www.networksorcery.com/enp/protocol/rtp.htm )
rtsp.org : Real Time Streaming Protocol(RTSP) ( www.rtsp.org )
Henning Schulzrinne ( www.cs.columbia.edu/~hgs/ )
Network Protocol Guide, Network Monitoring & Analysis Tools ( www.javvin.com )

RFC

Internet RFC/FYI/STD/BCP Archives ( www.faqs.org/rfcs/ )
Network Sorcery ( www.networksorcery.com )

Private
2000³â Multimedia conferencing system °úÁ¦
Distributed Processing and Network Management Laboratory
Skype traffic analysis page
Columbia IRT Lab

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