%% You should probably cite rfc3690 instead of this I-D.
@techreport{ietf-ieprep-ets-telephony-07,
    number =    {draft-ietf-ieprep-ets-telephony-07},
    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-ieprep-ets-telephony/07/},
    author =    {Ran Atkinson and Ken Carlberg},
    title =     {{IP Telephony Requirements for Emergency Telecommunication Service (ETS)}},
    pagetotal = 7,
    year =      2003,
    month =     dec,
    day =       2,
    abstract =  {This document presents a list of requirements in support of Emergency Telecommunications Service (ETS) within the context of IP telephony. It is an extension to the general requirements presented in RFC 3689. Solutions to these requirements are not presented in this document. This memo provides information for the Internet community.},
}