@techreport{ietf-pint-sip-00,
    number =    {draft-ietf-pint-sip-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-ietf-pint-sip/00/},
    author =    {Henning Schulzrinne},
    title =     {{SIP for Click-To-Dial-Back and Third-Party Control}},
    pagetotal = 3,
    year =      1997,
    month =     nov,
    day =       24,
    abstract =  {SIP can also be used to control calls established by other entities, for example, to have a computer control a PBX or a web server ask an SCP to initiate a call to a standard telephone (''click-to-dial- back''). We refer to the entity initiating the phone call as the controller and the PBX or SCP as the PSTN server.},
}