@techreport{rosenberg-peterson-simple-pidf-phone-00,
    number =    {draft-rosenberg-peterson-simple-pidf-phone-00},
    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-peterson-simple-pidf-phone/00/},
    author =    {Jonathan Rosenberg and Jon Peterson},
    title =     {{Extensions to the Presence Information Document Format (PIDF) for Conveying Phone State}},
    pagetotal = 21,
    year =      2003,
    month =     jun,
    day =       25,
    abstract =  {This document presents extensions to the Presence Information Document Format (PIDF) for representing the state of telephones. This state includes whether the telephone is in a call or not, whether it is registered to the network, whether it is ringing, and so on.},
}