---
title: Introducing new SHAKEN/STIR verstat parameters
canonical: https://telnyx.com/release-notes/new-shaken-stir-verstat-parameters
---
# Introducing new SHAKEN/STIR verstat parameters

[Release notes](https://telnyx.com/release-notes)

# New SHAKEN/STIR verstat parameters

### 15, Sep 2021

Today we are releasing two additional values to the verstat parameter to provide customers with more granular information on call attestation and verification results.

Initial SHAKEN/STIR implementation introduced a verification feature, a _verstat_ parameter, that is included in the _P-Asserted-Identity_ SIP header. The _verstat_ parameter includes information about the caller identity validation and attestation level, with possible values of TN-Validation-Passed, TN-Validation-Failed or No-TN-Validation depending on verification results of the PASSPorT and attestation level. This verification is done for inbound calls from the PSTN as well as on-net calls from Telnyx customers to other Telnyx customers.

Following Telnyx efforts to improve the SHAKEN STIR framework, we are introducing additional values to the _verstat_ parameter. These new values will provide Telnyx customers with more granular information regarding originating Caller ID attestation and verification results.

As of today, the possible values are as follows:

|           |                        |  |                                                                       |
| --------- | ---------------------- |  | --------------------------------------------------------------------- |
|           | **Verstat Value**      |  | **Description**                                                       |
|           | TN-Validation-Passed   |  | Identity header verification successful and call has an A attestation |
|           | TN-Validation-Failed   |  | Identity header verification failed                                   |
|           | No-TN-Validation       |  | No verification took place because Identity header was not provided   |
| _**NEW**_ | TN-Validation-Passed-B |  | Identity header verification successful and call has a B attestation  |
| _**NEW**_ | TN-Validation-Passed-C |  | Identity header verification successful and call has a C attestation  |

  
For more information on the SHAKEN/STIR framework check out our [resource center](https://telnyx.com/resources "Resource Center") or reach out to our [team of experts](https://telnyx.com/contact-us "Contact Us").

[Start building](https://telnyx.com/sign-up)

### Ask AI

* [![GPT](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/chatgpt_icon-ea55e09d.jpeg?width=92&format=webp)](https://chat.openai.com/?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.)
* [![Claude](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/claude_icon-c7c8eef3.webp?width=92&format=webp)](https://claude.ai/new?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.)
* [![Perplexity](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/perplexity_icon-cd5b74f1.webp?width=92&format=webp)](https://www.perplexity.ai/search?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.)
* [![Gemini](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/gemini_icon-4ff1cbf4.webp?width=92&format=webp)](https://www.google.com/search?udm=50&aep=11&q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.)
* [![Grok](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/grok_icon-e588e5bd.webp?width=92&format=webp)](https://x.com/i/grok?text=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.)