Engine.halt
From Yate Documentation
engine.halt is a message sent by the engine to the modules that have a message handler registered for it. This message tells them that Yate is stopping and this is the last chance to clean up before Yate kills all module threads.
Parameters
This message has no parameters.
Return
The message return value is ignored by the engine as it only serves as a means of shutdown notification towards the listening modules.
See also