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P2PSIP - with a bit less (Sk|h)ype

P2PSIP - with a bit less (Sk|h)ype. Henning Schulzrinne Dept. of Computer Science Columbia University. Good reasons for P2PSIP. rapid deployment in environments without sys admins and infrastructure advanced media services (computational, storage) chance to get user agents right .

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P2PSIP - with a bit less (Sk|h)ype

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  1. P2PSIP - with a bit less (Sk|h)ype Henning Schulzrinne Dept. of Computer Science Columbia University SIP 2008

  2. Good reasons for P2PSIP • rapid deployment in environments without sys admins and infrastructure • advanced media services (computational, storage) • chance to get user agents right  public P2P P2Page McD’s Internet2 enterprise LAN hot spot home mDNS (Bonjour) SIP 2008

  3. The wrong reasons • Skype envy • P2P incidental to success • ease of use - out-of-the-box experience • NAT traversal • good audio component (adaptive playout, error concealment, codecs) • can support 100k users on single $100/month SIP server • TURN and conferencing more interesting • still need authentication infrastructure • Service creation • same end-system services as in CS SIP • web-based services rely on hosting providers • good APIs more important than P2P vs. CS SIP 2008

  4. Risks • Standardization • Merger in progress: ASP + RELOAD + P2PP = ? • Science project (HIP) + IPR digging vs. engineering • Technology • Security risk of open protocols: rogue nodes • Operational reliability (see Skype outage) • Service creation: Grandcentral-like services? • Extension to mobile nodes? • power, computing, reliability • Business model • Who is going to run the network? • 2007 revenues: $250M ($1.60/user account/year); Vonage: $800M • hard to do Skype-bis: value proposition? • more likely: vertical markets, games SIP 2008

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