@techreport{biggs-sip-replaces-01,
    number =    {draft-biggs-sip-replaces-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-biggs-sip-replaces/01/},
    author =    {Billy Biggs and Rick Dean},
    title =     {{The SIP Replaces Header}},
    pagetotal = 6,
    year =      2001,
    month =     jul,
    day =       24,
    abstract =  {This document describes an extension to the Session Initiation Protocol (SIP) {[}2{]}. The purpose of this extension is to allow an active call-leg to be replaced by an incoming call-leg for the purposes of call transfer},
}