@misc{rfc3976,
    series =    {Request for Comments},
    number =    3976,
    howpublished =  {RFC 3976},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC3976},
    url =       {https://www.rfc-editor.org/info/rfc3976},
    author =    {F Haerens and Vidhi Rastogi and Vijay K. Gurbani},
    title =     {{Interworking SIP and Intelligent Network (IN) Applications}},
    pagetotal = 25,
    year =      2005,
    month =     jan,
    abstract =  {Public Switched Telephone Network (PSTN) services such as 800-number routing (freephone), time-and-day routing, credit-card calling, and virtual private network (mapping a private network number into a public number) are realized by the Intelligent Network (IN). This document addresses means to support existing IN services from Session Initiation Protocol (SIP) endpoints for an IP-host-to-phone call. The call request is originated on a SIP endpoint, but the services to the call are provided by the data and procedures resident in the PSTN/IN. To provide IN services in a transparent manner to SIP endpoints, this document describes the mechanism for interworking SIP and Intelligent Network Application Part (INAP). This memo provides information for the Internet community.},
}