@misc{rfc3959,
    series =    {Request for Comments},
    number =    3959,
    howpublished =  {RFC 3959},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC3959},
    url =       {https://www.rfc-editor.org/info/rfc3959},
    author =    {Gonzalo Camarillo},
    title =     {{The Early Session Disposition Type for the Session Initiation Protocol (SIP)}},
    pagetotal = 11,
    year =      2004,
    month =     dec,
    abstract =  {This document defines a new disposition type (early-session) for the Content-Disposition header field in the Session Initiation Protocol (SIP). The treatment of "early-session" bodies is similar to the treatment of "session" bodies. That is, they follow the offer/answer model. Their only difference is that session descriptions whose disposition type is "early-session" are used to establish early media sessions within early dialogs, as opposed to regular sessions within regular dialogs. {[}STANDARDS-TRACK{]}},
}