Abstract: A method for selectively rejecting a call in a mobile station, includes the steps of registering the information of the subscribers selected by the user of the mobile station for rejecting their calls in a mobile communications system, and dismissing a call for the mobile station when the call is generated by one of the subscribers registered in the mobile communications system. The calls of the registered subscribers may be automatically switched to a call switching phone number or a user's private sound box registered by the user in the mobile communications system. Preferably, the mobile communications system sends a message to notify the caller of rejecting the call.