[Sip-implementors] Technical reports on Skype protocol analysis and SIP in peer-to-peer mode

[Henning Schulzrinne]

We have written two technical reports that might be of interest to 
members of the list. Both can be found at 
http://www1.cs.columbia.edu/~library/2004.html

    Peer-to-Peer Internet Telephony using SIP
    Kundan Singh and Henning Schulzrinne
describes how SIP, with trivial modifications, can operate as a fully 
peer-to-peer protocol, i.e., without per-domain servers. We describe a 
hybrid scenario where parts are in p2p mode, while others follow the 
more "traditional" proxy mode.

    An Analysis of the Skype Peer-to-Peer Internet Telephony Protocol
    Salman A. Baset and Henning Schulzrinne
attempts to analyze how Skype works, constrained by the encryption of 
the protocol exchanges.

We would appreciate comments on these documents.
Henning
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