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(we do later) Media/NAT issues Distributed identity Security Prevent spoofing, prevent squatting IDs, don t enable illegal file sharing or DOS attacks Routing algorithms designed for P2P communications Supernodes, ICE, Turn servers? Likely first step is to figure out all the places that P2P may be useful for SIP and create a draft defining the problem space vsZZZ3ZZZsZ3   O; References$draft-bryan-sipping-p2p-01 D. A. Bryan, B. B. Lowekamp and C. Jennings, SOSIMPLE: Towards a Serverless, Standards-based, P2P Communication System, AAA-IDEA, June 2005 Stoica et al., Chord: A Scalable Peer-to-Peer Lookup Protocol for Internet Applications, IEEE/ACM Transactions on Networking (to appear) (Don t use the algorithms from SIGCOMM paper by same authors with same title  it contains some algorithmic errors) I maintain a list of references at http://www.p2psip.org Contact me via email bryan [at] ethernot [dot] org 0PtP$PPPPZe0  tn b.& AF /8   f` 33` Sf3f` 33g` f` www3PP` ZXdbmo` \ғ3y`Ӣ` 3f3ff` 3f3FKf` hk]wwwfܹ` ff>>\`Y{ff` R>&- {p_/̴>?" dd@,|?" dd@   " @ ` n?" dd@   @@``PR    @ ` `p>> d\ (  x  C BA*darker slide graphic" 0x  C BA*darker small squares"0b  6  "@`} X T Click to edit Master title style! !$  0@  " ` X RClick to edit Master text styles Second level Third level Fourth level Fifth level!     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