%% You should probably cite rfc4298 instead of this I-D.
@techreport{ietf-avt-rtp-bv-04,
    number =    {draft-ietf-avt-rtp-bv-04},
    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-avt-rtp-bv/04/},
    author =    {Juin-Hwey Chen and Jes Thyssen and Winnie Lee},
    title =     {{RTP Payload Format for BroadVoice Speech Codecs}},
    pagetotal = 14,
    year =      2005,
    month =     apr,
    day =       5,
    abstract =  {This document describes the RTP payload format for the BroadVoice(R) narrowband and wideband speech codecs. The narrowband codec, called BroadVoice16, or BV16, has been selected by CableLabs as a mandatory codec in PacketCable 1.5 and has a CableLabs specification. The document also provides specifications for the use of BroadVoice with MIME and the Session Description Protocol (SDP). {[}STANDARDS-TRACK{]}},
}