@techreport{worley-ex-uri-00,
    number =    {draft-worley-ex-uri-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-worley-ex-uri/00/},
    author =    {Dale R. Worley},
    title =     {{Response Codes Regarding URIs that Cannot Be Routed to a Destination in the Session Initiation Protocol (SIP)}},
    pagetotal = 10,
    year =      2007,
    month =     feb,
    day =       26,
    abstract =  {The Session Initiation Protocol (SIP) provides a number of response codes which a SIP agent can use to indicate that it cannot find a suitable destination to which to send a request. Unfortunately, this set of response codes was not carefully designed, making it difficult in many cases for a proxy to select a response code that accurately reflects the proxy's knowledge about the request URI. This document describes these response codes and their current usage.},
}