%% You should probably cite draft-ietf-martini-reqs instead of this I-D.
@techreport{elwell-martini-reqs-01,
    number =    {draft-elwell-martini-reqs-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-elwell-martini-reqs/01/},
    author =    {John Elwell},
    title =     {{Requirements for multiple address of record (AOR) reachability information in the Session Initiation Protocol (SIP)}},
    pagetotal = 8,
    year =      2010,
    month =     feb,
    day =       8,
    abstract =  {This document states requirements for a standardized SIP registration mechanism for multiple addresses of record, the mechanism being suitable for deployment by SIP service providers on a large scale in support of small to medium sized PBXs. The requirements are for a solution that can, as a minimum, support AORs based on E.164 numbers. This work is being discussed on the martini@ietf.org mailing list.},
}