@techreport{roach-sip-acb-00,
    number =    {draft-roach-sip-acb-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-roach-sip-acb/00/},
    author =    {Adam Roach},
    title =     {{Automatic Call Back Service in SIP
}},
    pagetotal = 7,
    year =      2000,
    month =     mar,
    day =       7,
    abstract =  {This document describes a proposed implementation of an Automatic Call Back (ACB) service using SIP. This service is somtimes refered to as 'camp on extension,' 'call again,' 'automatic redial,' and 'automatic recall.'},
}