%% You should probably cite rfc5391 instead of this I-D.
@techreport{ietf-avt-rtp-g711wb-03,
    number =    {draft-ietf-avt-rtp-g711wb-03},
    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-g711wb/03/},
    author =    {Aurelien Sollaud},
    title =     {{RTP Payload Format for ITU-T Recommendation G.711.1}},
    pagetotal = 14,
    year =      2008,
    month =     apr,
    day =       28,
    abstract =  {This document specifies a Real-time Transport Protocol (RTP) payload format to be used for the ITU Telecommunication Standardization Sector (ITU-T) G.711.1 audio codec. Two media type registrations are also included. {[}STANDARDS-TRACK{]}},
}