%% You should probably cite draft-ietf-pcp-port-set instead of this I-D.
@techreport{boucadair-pcp-rtp-rtcp-05,
    number =    {draft-boucadair-pcp-rtp-rtcp-05},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-boucadair-pcp-rtp-rtcp/05/},
    author =    {Mohamed Boucadair and Senthil Sivakumar},
    title =     {{Reserving N and N+1 Ports with PCP}},
    pagetotal = 14,
    year =      2012,
    month =     oct,
    day =       15,
    abstract =  {This document defines a new PCP Option to reserve a pair of ports (N and N+1) by a PCP-controlled device while preserving the parity and contiguity. This PCP Option eases the NAT traversal for applications having requirements on the port parity and contiguity (e.g., RTP/ RTCP).},
}