Calls are ending because of the "Phone call provider closed websocket" error. How do i fix this error?

Hey there! 👋 I don't have specific information about your particular implementation, but I can definitely help explain what this error means and provide some troubleshooting steps to fix it. The "Phone call provider closed websocket" error indicates that the connection with your call provider was unexpectedly closed. According to [Vapi documentation](https://docs.vapi.ai/calls/call-ended-reason), this can happen due to various reasons such as network issues, timeouts, or the provider encountering an unexpected condition. Here are some troubleshooting steps you can take: ## Initial Checks 1. Ensure a stable internet connection - Network issues are a common cause of this error 2. Verify the call provider's status - Check if there are any outages or issues on their end 3. Check for API updates - Make sure you're using the latest version of any APIs ## WebSocket Connection Checks * Validate the WebSocket URL - Ensure it's correct and hasn't expired * Check network configuration - Verify your network allows WebSocket connections and there are no firewalls blocking it * Test the WebSocket URL directly - You can use a tool like wscat to test:

wscat -c wss://aws-us-west-2-production1-phone-call-websocket.vapi.ai/<call-id>/transport

## Provider-Specific Checks If you're using Twilio: * Verify your Twilio Account SID and Auth Token are correctly configured * Ensure your phone number is verified with Twilio and capable of making outbound calls * Check Twilio webhook settings ## Code and Configuration Review * Review your code for recent changes that might affect voice input * Double-check API keys and access permissions * If using call forwarding, try omitting or nullifying the

forwardingPhoneNumber

attribute ## Alternative Interpretation

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