@misc{rfc4239,
    series =    {Request for Comments},
    number =    4239,
    howpublished =  {RFC 4239},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC4239},
    url =       {https://www.rfc-editor.org/info/rfc4239},
    author =    {Stuart McRae and Glenn Parsons},
    title =     {{Internet Voice Messaging (IVM)}},
    pagetotal = 11,
    year =      2005,
    month =     nov,
    abstract =  {This document describes the carriage of voicemail messages over Internet mail as part of a unified messaging infrastructure. The Internet Voice Messaging (IVM) concept described in this document is not a successor format to VPIM v2 (Voice Profile for Internet Mail Version 2), but rather an alternative specification for a different application. {[}STANDARDS-TRACK{]}},
}