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In simple terms, STIR technology allows for better caller identification because it verifies where the call is coming from at different points. Instead of actually preventing callers from changing their ID, it tells end users whether they should trust a call or not.

STIR/SHAKEN digitally validates the handoff of phone calls passing through the complex web of networks, allowing the phone company of the consumer receiving the call to verify that a call is in fact from the number displayed on Caller ID.

Small, rural voice service providers with fewer than 100,000 subscriber lines. Any voice service provider who cannot obtain a certificate from the STIR/SHAKEN Governance Authority. Any voice service provider which materially relies on a non-IP (TDM) network for the provision of voice services.

STIR/SHAKEN is a protocol that confirms Caller ID is not being illegally spoofed. It works across Internet Protocol networks like VoIP landlines and most wireless phones. It's a key step toward giving customers greater confidence and control over the calls they receive.

STIR/SHAKEN digitally validates the handoff of phone calls passing through the complex web of networks, allowing the phone company of the consumer receiving the call to verify that a call is in fact from the number displayed on Caller ID.

VERSTAT is not a PRIVACY PROTECTED parameter and provides value to the originating and terminating networks without disclosing the originating identity and/or calling name or number. Device Display Framework along with CVT MUST provide this valuable information to end user.

If the call is authenticated the Verstat Parameter would be updated as TN validation passed. If the call is not authenticated, then the terminating service provider would set it TN validation failed. In this case, they can also block the call.