%% You should probably cite draft-jennings-vipr-vap-02 instead of this revision. @techreport{jennings-vipr-vap-01, number = {draft-jennings-vipr-vap-01}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-jennings-vipr-vap/01/}, author = {Cullen Fluffy Jennings and Jonathan Rosenberg and Marc Petit-Huguenin}, title = {{Verification Involving PSTN Reachability: The ViPR Access Protocol (VAP)}}, pagetotal = 49, year = , month = , day = , 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).}, }