@techreport{ietf-sip-privacy-04,
    number =    {draft-ietf-sip-privacy-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-sip-privacy/04/},
    author =    {Bill Marshall},
    title =     {{SIP Extensions for Network-Asserted Caller Identity and Privacy  within Trusted Networks}},
    pagetotal = 33,
    year =      2002,
    month =     mar,
    day =       6,
    abstract =  {This document describes extensions to SIP that enable a network of trusted SIP servers to assert the identity of end users or end systems, and to convey indications of end-user requested privacy. The use of these extensions are only applicable inside an administrative domain, or among federations of administrative domains with previously agreed-upon policies for usage of such information. This document does NOT offer a general privacy or identity model suitable for inter-domain use or use in the Internet at large.},
}