### Answer
It sounds like you're encountering issues with inbound calling on your European Twilio number through Vapi. This could be related to regional settings or permissions within Twilio.
For calls involving European numbers, there are known issues that require specific settings or configurations within Twilio. For instance, international permissions may need to be enabled on Twilio for outbound calls to work with non-US numbers, as discussed in a community post [(1)](
) . While your issue is with inbound calls, similar regional or permission-related settings in Twilio could be affecting the availability of your number for inbound calls.
Additionally, there can be configurations needed for the Twilio number to properly route inbound calls through Vapi. Make sure your Twilio number is correctly imported into Vapi and that it's set up to handle inbound calls as per Vapi documentation [(2)](
) [(3)](
) . If the number is not properly configured to handle inbound calls through Vapi, you might encounter issues like the one you're experiencing.
If these steps don't resolve the issue, reviewing Twilio's documentation or reaching out to their support might provide specific guidance on unlocking or configuring European numbers for inbound calls. Remember, for the number to interact with Vapi, it should be properly imported and configured to route calls to your Vapi assistant or server URL [(3)](
) .
Given the complexity of telecommunication regulations and the technical nuances between services, there's a possibility that additional settings or permissions are required, especially for international n