A voice can be cloned from three seconds of audio. Without carrier-level identity, an AI agent calling a human is indistinguishable from a scam call. The receiving carrier checks the attestation from the originating carrier, not your app. Telnyx verifies, signs, and screens at the network layer, where trust is actually enforced.
At origination, during the call, and across the reputation surface.
Telnyx signs every outbound call at A-level STIR/SHAKEN, the highest trust tier in the US telephone network. Recipient carriers see a verified caller, not a suspicious one. Your calls get answered instead of flagged.
Deepfake detection runs natively on the voice pipeline and flags AI-generated or altered audio in under four seconds. Fast enough to interrupt a fraudulent transaction, not just log one after the fact.
A dashboard and API show how carriers rate your numbers in real time, so you can act before pickup rates drop. Inbound spam is filtered at the network layer. Branded Calling puts your name on the recipient's screen, not just your number.
Why application-layer identity breaks at the phone network.
A practical guide for deploying attestation with AI agents.