%% You should probably cite rfc4117 instead of this I-D.
@techreport{ietf-sipping-transc-3pcc-02,
    number =    {draft-ietf-sipping-transc-3pcc-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-ietf-sipping-transc-3pcc/02/},
    author =    {Henning Schulzrinne and Gonzalo Camarillo and Arnoud Van Wijk and Eric Burger},
    title =     {{Transcoding Services Invocation in the Session Initiation Protocol (SIP) Using Third Party Call Control (3pcc)}},
    pagetotal = 19,
    year =      2004,
    month =     sep,
    day =       17,
    abstract =  {This document describes how to invoke transcoding services using Session Initiation Protocol (SIP) and third party call control. This way of invocation meets the requirements for SIP regarding transcoding services invocation to support deaf, hard of hearing and speech-impaired individuals. This memo provides information for the Internet community.},
}