@misc{rfc5438,
    series =    {Request for Comments},
    number =    5438,
    howpublished =  {RFC 5438},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC5438},
    url =       {https://www.rfc-editor.org/info/rfc5438},
    author =    {Eric Burger and Hisham Khartabil},
    title =     {{Instant Message Disposition Notification (IMDN)}},
    pagetotal = 38,
    year =      2009,
    month =     feb,
    abstract =  {Instant Messaging (IM) refers to the transfer of messages between users in real-time. This document provides a mechanism whereby endpoints can request Instant Message Disposition Notifications (IMDN), including delivery, processing, and display notifications, for page-mode instant messages. The Common Presence and Instant Messaging (CPIM) data format specified in RFC 3862 is extended with new header fields that enable endpoints to request IMDNs. A new message format is also defined to convey IMDNs. This document also describes how SIP entities behave using this extension. {[}STANDARDS-TRACK{]}},
}