@misc{rfc5194,
    series =    {Request for Comments},
    number =    5194,
    howpublished =  {RFC 5194},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC5194},
    url =       {https://www.rfc-editor.org/info/rfc5194},
    author =    {Guido Gybels and Arnoud Wijk},
    title =     {{Framework for Real-Time Text over IP Using the Session Initiation Protocol (SIP)}},
    pagetotal = 31,
    year =      2008,
    month =     jun,
    abstract =  {This document lists the essential requirements for real-time Text-over-IP (ToIP) and defines a framework for implementation of all required functions based on the Session Initiation Protocol (SIP) and the Real-Time Transport Protocol (RTP). This includes interworking between Text-over-IP and existing text telephony on the Public Switched Telephone Network (PSTN) and other networks. This memo provides information for the Internet community.},
}