%% You should probably cite rfc7261 instead of this I-D.
@techreport{ietf-mmusic-sdp-g723-g729-06,
    number =    {draft-ietf-mmusic-sdp-g723-g729-06},
    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-mmusic-sdp-g723-g729/06/},
    author =    {Muthu Arul Perumal and Parthasarathi Ravindran},
    title =     {{Offer/Answer Considerations for G723 Annex A and G729 Annex B}},
    pagetotal = 8,
    year =      2014,
    month =     feb,
    day =       28,
    abstract =  {This document provides the offer/answer considerations for the annexa parameter of G723 and the annexb parameter of G729, G729D, and G729E when the value of the annexa or annexb parameter does not match in the Session Description Protocol (SDP) offer and answer.},
}