%% You should probably cite rfc8119 instead of this I-D.
@techreport{mohali-dispatch-cause-for-service-number-10,
    number =    {draft-mohali-dispatch-cause-for-service-number-10},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-mohali-dispatch-cause-for-service-number/10/},
    author =    {Marianne Mohali and Mary Barnes},
    title =     {{Session Initiation Protocol (SIP) Cause URI parameter for Service Number translation}},
    pagetotal = 10,
    year =      2016,
    month =     dec,
    day =       8,
    abstract =  {RFC4458 defines a "cause" URI parameter, which may appear in the Request-URI of a SIP request, that is used to indicate a reason why the request arrived to the User Agent Server (UAS) receiving the message. This document creates a new predefined value for the "cause" URI parameter to cover service number translation for cases of retargeting due to specific service action leading to the translation of a called service access number. This document also provides a guidance for using the "cause" URI parameter within the History-Info header field because it was missing in RFC4458 whereas the combination of both is mandatory in some IP networks implementations. This document updates RFC4458.},
}