@techreport{greco-sipping-roaming-01,
    number =    {draft-greco-sipping-roaming-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-greco-sipping-roaming/01/},
    author =    {Silvana Greco and Henning Schulzrinne},
    title =     {{Authentication, Authorization, Accounting and Billing of Roaming Users using SAML}},
    pagetotal = 32,
    year =      2007,
    month =     jul,
    day =       12,
    abstract =  {Roaming services allow users that have a contract with a voice service provider to use access resources owned by other providers known as internet access providers. This draft proposes a token- based Authentication, Authorization, Accounting (AAA) and billing model for roaming users supporting the Session Initiation Protocol (SIP). It also introduces a protocol solution for the proposed model that is based on the Security Assertion Markup Language (SAML) protocol and the Hypertext Transfer Protocol (HTTP).},
}