@techreport{gurbani-iptel-sip-to-in-05,
    number =    {draft-gurbani-iptel-sip-to-in-05},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-gurbani-iptel-sip-to-in/05/},
    author =    {Vijay K. Gurbani and Vidhi Rastogi},
    title =     {{Accessing IN services from SIP networks}},
    pagetotal = 20,
    year =      2001,
    month =     sep,
    day =       6,
    abstract =  {In Internet telephony, the call control functions of a traditional circuit switch are replaced by a IP-based call controller that must provide features normally provided by the traditional switch, including operating as a SSP for IN features. A traditional switch is armed with an IN call model that provides it a means to reach out and make service decisions based on intelligence stored elsewhere. Internet call controllers, by contrast, do not have an IN call model.},
}