%% You should probably cite rfc4160 instead of this I-D.
@techreport{ietf-fax-gateway-protocol-13,
    number =    {draft-ietf-fax-gateway-protocol-13},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-fax-gateway-protocol/13/},
    author =    {T Satoh and Claudio Allocchio and Chie Kanaide and Keiichi Yokoyama and Katsuhiko Mimura},
    title =     {{Internet Fax Gateway Requirements}},
    pagetotal = 13,
    year =      2005,
    month =     feb,
    day =       23,
    abstract =  {To allow connectivity between the General Switched Telephone Network facsimile service (GSTN fax) and the e-mail-based Internet Fax service (i-fax) an "Internet Fax Gateway" is required. This document provides recommendations for the functionality of Internet Fax Gateways. In this context, an "offramp gateway" provides facsimile data transmission from i-fax to GSTN fax; vice versa, an "onramp gateway" provides data transmission form GSTN fax to i-fax. The recommendations in this document apply to the integrated service including Internet Fax terminals, computers with i-fax software on the Internet, and GSTN Fax terminals on the GSTN. This memo provides information for the Internet community.},
}