🔍 TL;DR
The originating service provider that injects the call into the network signs your calls with STIR/SHAKEN attestation, which may be a carrier, VoIP provider, or upstream partner.
📊 Key Facts About Branded Calling
Who Signs Calls
Calls are signed by the originating service provider that enables the SIP invite and places the call into the network. That provider applies the STIR/SHAKEN token or certificate and assigns the attestation level.
How Provider Relationships Affect Signing
- When enterprises connect directly to a carrier, that carrier signs the calls
- When enterprises use resellers, CPaaS, UCaaS, or BPOs, the upstream provider signs the calls
- Enterprises may not contract directly with the signing provider
Regulatory Requirements
Non‑facilities‑based providers are now required by the FCC to register in the Robocall Mitigation Database, implement mitigation plans, register with the STI‑PA, and authenticate calls using STIR/SHAKEN.
Why This Matters to Enterprises
If you do not know who is signing your calls, you may have limited visibility into how attestation decisions are made or how issues are resolved. Enterprises benefit from clarity and accountability across complex provider chains so call authentication and number authorization are consistently enforced.
Our platform empowers organizations to manage branded calling, improve caller id reputation, and stay compliant with evolving regulatory and industry standards. FAQs like this are designed to provide clear, actionable guidance backed by our expertise in verified identity, call labeling mitigation, and spam prevention.
To explore how Numeracle supports trusted and effective outbound communications, visit www.numeracle.com.
