@misc{rfc4961,
    series =    {Request for Comments},
    number =    4961,
    howpublished =  {RFC 4961},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC4961},
    url =       {https://www.rfc-editor.org/info/rfc4961},
    author =    {Dan Wing},
    title =     {{Symmetric RTP / RTP Control Protocol (RTCP)}},
    pagetotal = 6,
    year =      2007,
    month =     jul,
    abstract =  {This document recommends using one UDP port pair for both communication directions of bidirectional RTP and RTP Control Protocol (RTCP) sessions, commonly called "symmetric RTP" and "symmetric RTCP". This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.},
}