@techreport{camarillo-sipping-reason-00,
    number =    {draft-camarillo-sipping-reason-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-camarillo-sipping-reason/00/},
    author =    {Gonzalo Camarillo},
    title =     {{Session Initiation Protocol: Requirements on Reason Information beyond the Status Code}},
    pagetotal = 5,
    year =      2002,
    month =     apr,
    day =       8,
    abstract =  {Some applications need to know why a particular SIP message was issued. This document describes those applications and provides a set of requirements that a mechanism used to transport this type of information has to fulfill.},
}