### Answer
It seems like the issue you're experiencing might be related to an unexpected behavior or bug in the Vapi system. There have been similar instances reported where Vapi encounters an error and hangs up prematurely [(1)](
) . It could be useful to check for any errors in your assistant's configuration or to review recent updates that might affect the assistant's behavior.
If you continue to face this issue, it might be beneficial to directly check with the Vapi support team or monitor the system for any updates regarding bugs or fixes related to this behavior.