%% You should probably cite draft-ietf-avt-rtp-bv instead of this I-D.
@techreport{chen-rtp-bv-02,
    number =    {draft-chen-rtp-bv-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-chen-rtp-bv/02/},
    author =    {Juin-Hwey Chen},
    title =     {{RTP Payload Format for BroadVoice Speech Codecs}},
    pagetotal = 13,
    year =      2003,
    month =     nov,
    day =       21,
    abstract =  {This document describes the RTP payload format for the BroadVoice(TM) narrowband and wideband speech codecs developed by Broadcom Corporation. The document also provides specifications for the use of BroadVoice with MIME and SDP.},
}