@misc{rfc6228,
    series =    {Request for Comments},
    number =    6228,
    howpublished =  {RFC 6228},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC6228},
    url =       {https://www.rfc-editor.org/info/rfc6228},
    author =    {Christer Holmberg},
    title =     {{Session Initiation Protocol (SIP) Response Code for Indication of Terminated Dialog}},
    pagetotal = 14,
    year =      2011,
    month =     may,
    abstract =  {This specification defines a new Session Initiation Protocol (SIP) response code, 199 Early Dialog Terminated, that a SIP forking proxy and a User Agent Server (UAS) can use to indicate to upstream SIP entities (including the User Agent Client (UAC)) that an early dialog has been terminated, before a final response is sent towards the SIP entities. {[}STANDARDS-TRACK{]}},
}