Every outbound call on eTollFree is signed with STIR/SHAKEN — A-level attestation for owned caller IDs, so your calls arrive verified, trusted, and less likely to be flagged.
STIR/SHAKEN is the FCC-mandated framework that digitally signs every outbound call so the receiving carrier can verify who is actually calling. A signed call is harder to spoof, harder to flag, and far more likely to be answered.
Applied to every caller ID owned and registered under your account. The carrier fully verifies both the calling number and the originating entity. This is the strongest trust signal available.
Used when the originating carrier verifies the caller but cannot verify the specific calling number. Less trusted than A, but still signed and auditable.
Reserved for calls where the caller ID is forwarded from outside the network and cannot be verified. Applied only to forwarded CIDs — never to owned numbers.
Our signing certificate is issued by a licensed STI Certificate Authority and renewed annually. No interruption, no gaps, no downgrade.
eTollFree is registered in the FCC Robocall Mitigation Database — a requirement to pass signed traffic to downstream carriers.
Signing adds negligible delay — calls are signed in the millisecond range as they leave our proxy. Your customers never notice.
Every signed call gets one of three attestation levels. The level indicates how confident the carrier is that the caller is who they say they are. Higher attestation means higher trust — which translates directly into fewer spam flags and better answer rates.
STIR/SHAKEN is not just a compliance checkbox — it is the single most important factor in whether modern calls actually reach the recipient. Carrier analytics engines treat unsigned or C-attested calls as higher risk and route them toward spam folders, blocked lists, or silent rejection.
Three steps from baseline to operational.
Your CIDs are added to our authorized signing list at the time of initial DID order — provided a completed KYC form is on file.
Every outbound call routes through our signing proxy. We sign the call with our STI certificate before it leaves the network.
Downstream carriers verify the signature and deliver the call with full attestation. Recipients see a trusted caller ID, not a spam flag.
The difference between A-attested and unsigned traffic shows up directly in your contact rate.
| Capability | eTollFree A-Attested | Unsigned / C-Attested |
|---|---|---|
| STIR/SHAKEN Signed | Every call — A attestation | No signing or C only |
| Carrier Trust Signal | Highest available | Elevated risk score |
| Spam Filter Risk | Low | High |
| Verified Handset Display | Yes — checkmark shown | No — plain or unknown |
| FCC RMD Compliance | Registered | Traffic may be blocked |
| Answer Rate Impact | Protected from attestation downrank | Filtered or blocked |
Talk to our team about your outbound calling operation and we will recommend the right combination of services for your volume, risk profile, and goals.
We'll walk you through your current setup, identify gaps, and provide transparent pricing — no surprises, no pressure.
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