About SafeCall

SafeCall allows you to comply with STIR/SHAKEN standards and regulations, and provides a secure way of handling calls. Phone spammers can change or spoof a phone number, making it look like a call from a familiar number. Since the number is familiar, the users are more likely to answer this call. To protect your customers from spoofed robocalls, verify incoming calls using STIR/SHAKEN. A special digital signature is added to each incoming call from other carriers.

Your users will see the verified V-sign that lets them know they can trust the number they see on their phones. If the number is not verified, they can decide whether to answer. Likewise, when your users make calls to phone numbers that belong to other carriers their identity is going to be verified, so the called party will see that this is a trusted phone number and will answer the call; otherwise, there is a high chance the call is just dropped.

As the originating service provider, you can choose the following trust gradation for the outgoing calls:

• Full attestation. The service provider authenticates the user making the call and confirms they are authorized to use the phone number. For example, the authenticated user makes a call using the phone number allocated by the service provider. Note that the verification sign [V] is only displayed for users if the caller has the full attestation level.
• Partial attestation. The service provider authenticates the customer making the call, but cannot confirm that the calling party is authorized to use the phone number. For example, a call is initiated by your PBX customer from a non-authorized number.
• Gateway attestation. The service provider indicates they let the call enter on their network, but they cannot verify the call originator. For example, a call is received from an international gateway or a wholesale partner.

Users have confidence that the number they see is trustworthy and can choose for themselves whether to answer unmarked calls.

Service providers can comply with regulations passed by Federal Communications Commission (FCC) or Canadian Radio-television and Telecommunications Commission (CRTC), and protect their users from unwanted robocalls (phone spam).

TransNexus is a certification authority, and a service provider of authentication and verification services.

STIR/SHAKEN end-to-end flow

See Authentication of outgoing calls and Verification of incoming calls sections for more details.

SafeCall can be deployed with PortaSwitch starting from MR90.