@techreport{huitema-megaco-mgcp-firewall-00,
    number =    {draft-huitema-megaco-mgcp-firewall-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-huitema-megaco-mgcp-firewall/00/},
    author =    {Christian Huitema and Flemming Andreasen},
    title =     {{Media Gateway Control Protocol (MGCP) Support for Packet Relays}},
    pagetotal = 23,
    year =      1999,
    month =     feb,
    day =       22,
    abstract =  {The Media Gateway Control Protocol (MGCP) organizes the communication between a Media Gateway controller, or call agent, and a Media Gateway, e.g. a Voice over IP gateway or a Network Access Server. MGCP is defined in a companion document {[}1{]}. This document explains how MGCP can be used to handle 'packet relays', such as firewalls. It contains an introduction, two example call flows, and a discussion of some open questions.},
}