User manual

 Ring for Repeated Calls A second call from the same number within 3
minutes will keep ringing. Toggle to green to enable.
 Auto Send SMS After a Call is Rejected For courtesy and for the other
person on the line would know why the call got rejected. Toggle to green to
enable.
You can even customize the SMS that will be sent. Just click [Reply Content] and you
can personalized that SMS that will be sent after a call has been rejected.