The invention relates to a number classify communication network technique, belonging to the communication network technique. In the process of receiving telephone, message and email, the system uses the limits and demands of preset different group grades as sequence to receive the telephone, message and email. For example, when receiving general telephone, if there is preset important telephone incoming, the system automatically stops the communication of general telephone and connects said important telephone, and if there is preset annoy telephone incoming, the system automatically generates busy signal. |