### Answer
When setting up outbound calls to test an inbound agent, ensure both your assistants (outbound and inbound) are properly configured in terms of transcriber, model, voice, and especially their handling instructions for calls [(1)](
) [(2)](
) [(3)](
) [(4)](
) . If the call immediately hangs up, it could indicate an issue with the connection setup or function calling between the two agents.
Ensure your server URL settings are correctly configured to manage the interaction between the outbound and inbound calls effectively. This might involve setting up function calls correctly in your outbound assistant to manage the call logic or actions [(1)](
) . Also, carefully review the configuration of your inbound assistant to ensure it's set to accept and process incoming calls as expected [(4)](
) .
Lastly, verify that your phone numbers are correctly set up and associated with the correct assistants for both inbound and outbound calling [(5)](
) [(6)](
) [(4)](
) . If the problem persists, you may need to closely review the logs or debug the call flow to identify where the disconnection occurs.