STIR/SHAKEN signing
Every call is cryptographically signed at origination, so carriers downstream can verify it wasn't spoofed.
See STIR/SHAKEN attestation
Call Authentication
One number decides whether an authenticated call actually reaches your customer. Your answer rate.
Call authentication is the set of standards and infrastructure that prove a call is coming from who it says it's from. Getting it right is what separates a signed, trusted call from one that gets flagged before it rings.
What authentication actually requires
Signing is only the first layer. Getting a call trusted and answered takes all four.
A-Level attestation
QVD signs at the highest attestation tier — full attestation of both the caller and the number — as the originating carrier.
See STIR/SHAKEN attestationRich Call Data
Verified business name, logo, and call reason travel with the signed call as tamper-proof Rich Call Data.
See Branded Calling ID™Direct carrier termination
Calls route straight to AT&T, Verizon, and T-Mobile — no aggregator in the middle to strip the attestation token.
See direct carrier terminationUnauthenticated calls get labeled, blocked, or ignored
Carriers and handset apps score every inbound call in real time. A call with no attestation, weak attestation, or a flagged origin is more likely to display as Spam Likely, Scam Likely, or get blocked outright before it rings.
4.8B
Spam calls flooding US phones every month
90%+
Of consumers who refuse to answer unknown numbers
A-Level
The attestation tier QVD signs at as the originating carrier