@techreport{rosenberg-dispatch-vipr-vap-03,
    number =    {draft-rosenberg-dispatch-vipr-vap-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-rosenberg-dispatch-vipr-vap/03/},
    author =    {Jonathan Rosenberg and Cullen Fluffy Jennings and Marc Petit-Huguenin},
    title =     {{Verification Involving PSTN Reachability: The ViPR Access Protocol (VAP)}},
    pagetotal = 49,
    year =      2010,
    month =     oct,
    day =       25,
    abstract =  {Verification Involving PSTN Reachability (ViPR) is a technique for inter-domain SIP federation. ViPR hybridizes the PSTN, P2P networks, and SIP, and in doing so, addresses the phone number routing and VoIP spam problems that have been a barrier to federation. The ViPR architecture uses a server, the ViPR server, which performs P2P and validation services on behalf of call agents, which acts as clients to the server. Such an architecture requires a client/server protocol between call agents and the ViPR server. That protocol, defined here, is called the ViPR Access Protocol (VAP). Legal This documents and the information contained therein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION THEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.},
}