@techreport{donovan-sip-gw-client-00,
    number =    {draft-donovan-sip-gw-client-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-donovan-sip-gw-client/00/},
    author =    {Matthew Cannon and Steve Donovan},
    title =     {{A Functional Description of a SIP-PSTN Gateway}},
    pagetotal = 6,
    year =      1998,
    month =     nov,
    day =       18,
    abstract =  {This document describes a functional model of a gateway between the Public Switched Telephony Network (PSTN) and a SIP-based IP network providing telephony service. In this document, the SIP-based IP network will be referred to as Telephony over IP Service (TIPS). The primary function of the gateway is to handle connections involving one or more PSTN phones (i.e.; PSTN black phones) as if those PSTN phones are SIP clients. The goal of this approach is to ensure that SIP-based TIPS service logic applies to both native Internet- based SIP clients and PSTN phones without modification.},
}