All of a sudden, inbound calls from telnyx are not...
# ask-aif
few-soccer-7112
07/14/2025, 10:19 PMAll of a sudden, inbound calls from telnyx are not connecting due to an error livekit side. Help me debug.
failed joining room: cannot create LiveKit participant: could not dial signal connection
t
tall-airline-16756
07/14/2025, 10:19 PMThanks for reaching out, Muthana. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
tall-airline-16756
07/14/2025, 10:20 PMThe error "failed joining room: cannot create LiveKit participant: could not dial signal connection" indicates that your SIP service (handling inbound Telnyx calls) is unable to establish a signal connection to your LiveKit server. This is most often caused by network connectivity issues, misconfigured WebSocket URLs, or authentication problems.
• Verify your LiveKit server is running and accessible from your SIP service.
• Check that the WebSocket URL (WsUrl) in your SIP service configuration points to the correct LiveKit server endpoint.
• Ensure there are no firewall or network issues blocking outbound connections from your SIP service to the LiveKit server.
• Confirm that your API credentials (ApiKey/ApiSecret) are correct and have the necessary permissions.
• Review both your SIP service and LiveKit server logs for more detailed error messages.
If you need more targeted help, please provide:
• The exact WebSocket URL you are using
• Any relevant log excerpts from your SIP service and LiveKit server
• Confirmation that your LiveKit server is reachable from the SIP service host (e.g., via
telnetcurl