Set Question Box Play/Response Option
This command causes a $play_var operation, or the playing of the image voice description, to proceed without caller interruption. Any DTMF input from the caller during the playing of the message will be discarded. However DTMF input unprocessed before the message starts will still suppress the message, unless $flushdtmf is used.
This command has no parameters
Default: description may be interrupted by keying during the play operation