Telnyx

Telnyx provides call attestation information through the verstat parameter in the P-Asserted-Identity SIP header.

Verstat parameter

P-Asserted-Identity: "John Doe" <sip:[email protected];verstat=TN-Validation-Passed>

Value	Description
`TN-Validation-Passed`	Verification succeeded, A-level attestation
`TN-Validation-Passed-B`	Verification succeeded, B-level attestation
`TN-Validation-Passed-C`	Verification succeeded, C-level attestation
`TN-Validation-Failed`	Verification failed (invalid certificate)
`No-TN-Validation`	No Identity header provided

The verstat parameter is included for:

⌘I