@techreport{anderson-askew-cidvv-00,
    number =    {draft-anderson-askew-cidvv-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-anderson-askew-cidvv/00/},
    author =    {Roger Anderson and Steven Berkson and Phillip Askew},
    title =     {{Caller-ID Vouching and Vetting (CIDVV)}},
    pagetotal = 30,
    year =      2026,
    month =     may,
    day =       7,
    abstract =  {Caller-ID spoofing remains a significant problem in telephony, particularly across inter-domain and international call paths where identity frameworks may not be consistently applied. This document defines Caller-ID Vouching and Vetting (CIDVV), a lightweight verification mechanism that uses short-lived signaling exchanges encoded within the Calling Party Number to confirm that a calling party can receive calls at the Asserted Caller-ID. CIDVV is designed to operate across heterogeneous SIP and SS7/TDM networks without requiring new protocol extensions or persistent identity infrastructure. It relies on existing call routing behavior and intentionally leverages failure responses as a signaling mechanism, using failed call attempts as evidence of number control rather than successful call completion. The mechanism improves resistance to Caller-ID spoofing by requiring demonstrable control of the Asserted Caller-ID, while remaining incrementally deployable and tolerant of intermediate network modification.},
}