%% You should probably cite rfc5117 instead of this I-D.
@techreport{ietf-avt-topologies-07,
    number =    {draft-ietf-avt-topologies-07},
    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-topologies/07/},
    author =    {Stephan Wenger and Magnus Westerlund},
    title =     {{RTP Topologies}},
    pagetotal = 21,
    year =      2007,
    month =     oct,
    day =       26,
    abstract =  {This document discusses multi-endpoint topologies used in Real-time Transport Protocol (RTP)-based environments. In particular, centralized topologies commonly employed in the video conferencing industry are mapped to the RTP terminology. This memo provides information for the Internet community.},
}