### Answer
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Here are some steps and considerations for phone number verification for outbound calls:
Verified Phone Numbers Process [(1) ](
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1. Log in to the Retell AI dashboard and purchase a phone number
2. Navigate to the Advanced Add-Ons section and click "Verified Phone Number" to start the application
3. Fill in your company details in the business profile
4. Submit the application for verification—approval typically takes 1–2 weeks
5. Once approved, you can begin making outbound calls using your verified number
Common Issues to Check
If you're using a Twilio number connected via SIP trunk, ensure you've completed: [(2) ](
)
- Created the elastic SIP trunk with proper termination settings (for outbound)
- Set up the termination SIP URI correctly
- Configured authentication either via IP whitelisting or username/password credentials
If outbound calls are failing with errors like "No valid KYC," you may need to complete additional verification through your telephony provider (e.g., Twilio) as well. [(3) ](
)
For Further Assistance
To get direct help with your specific verification issue, please share your
org ID (found in your account settings, bottom left of the dashboard) so the team can look into your account. [(4) ](
)
Check out these potentially useful sources:
- [Boost Trust with Verified Phone Numbers](
)
- [Debug outbound connection issues](
)
- [Contact Sales](
)