Call Authentication
Verified display information — business name, logo, and call reason — carried inside a signed PASSporT so it cannot be forged in transit.
RCD uses an extended PASSporT type ('rcd') that includes display name, a URL to a logo asset, and optionally a short call reason. Because the data is inside the signed token, a downstream carrier cannot alter it without breaking the signature.
RCD depends on the originating provider vetting the business identity behind the data — the cryptography protects the data in transit, not the truth of the claim.
RCD is where authentication turns into a sellable service for your enterprise customers rather than a pure compliance cost.
Displaying a verified business name, logo, and call reason on the called party's handset instead of a bare phone number.
The signed JSON Web Token inside the Identity header that asserts the calling number, called number, attestation level, and origination identifier.
The legacy caller-name lookup system in which the terminating carrier queries a database to find a name associated with the calling number.
SipShield scores live SIP traffic with patented AI so the controls behind this term run automatically — and leave the audit trail regulators expect.