Full attestation
Sign eligible calls where the customer, origination, and right to use the number are verified.
STIR/SHAKEN
Legitimate calls, delivered with confidence.
STIR/SHAKEN uses trusted digital certificates to verify calling identity and reduce illegal spoofing. IP Link brings the framework into a practical carrier service.
Strengthen my call authentication ↗4B+calls signed monthly
A · B · Cattestation levels
Majorcarrier interoperability
The IP Link approach
A regulatory framework, delivered as a working service.
STIR—Secure Telephony Identity Revisited—defines protocols for creating a digital signature for a call. SHAKEN—Signature-based Handling of Asserted information using toKENs—defines how service providers deploy those protocols in their networks.
IP Link has established interoperability with major carriers and built enhancements that support customer compliance. When outbound calling and phone numbers are consolidated with IP Link, eligible voice traffic can be signed with full attestation.
Our network signs more than four billion calls each month. Beyond authentication, customers can use controls such as screening, allow and block lists, subscriber-maintained lists, and call treatments for unknown callers.
What you get
Authentication with operational control
Call screening
Activate or deactivate screening policies based on customer and traffic requirements.
Allow and block lists
Create, import, and manage lists that inform how calls are treated.
Unknown caller treatment
Assign handling rules for calls whose identity cannot be fully established.
Fraud reduction
Use network controls, maintained lists, and verification workflows to help keep malicious traffic out.
Compliance support
Work with a carrier team that follows the evolving technical and regulatory framework.
A strong fit for
For businesses whose reputation rides on the outbound call.
- Voice service providers↗
- Contact centers↗
- Outbound engagement platforms↗
- Enterprises managing call reputation↗
How we work
Verify the relationship
Establish the customer, origination source, and association with the calling number.
Sign the call
Create the SIP Identity header and apply the appropriate attestation level.
Support verification
The terminating provider validates the signature and completes the call.
Ready for stir/shaken?
Strengthen my call authentication.
Tell us what you’re building. Our team will design the right combination of voice, messaging, numbering, and carrier services to support it.
Start a conversation ↗