To provide a communication network system wherein a transmitting user can know the state of the existence area of a mobile terminal as a receiving destination without reporting a receiving operation and the transmitting user can instruct the continuation or the suspension of a transmitting operation after its existence position has been grasped.

When the transmitting operation is performed to the mobile communication terminal, the mobile communication terminal temporarily receives a transmission control procedure, and it transmits the acquisition request of information on a receiving station to a high-order network. The high-order network INW7 reserves a transmission-connection control procedure according to the acquisition request, it acquires the area name and the on-the-spot time of the existence area of the mobile communication terminal as the receiving destination, and it reports them to the mobile communication terminal MS1 as a transmitting destination. The terminal MS1 displays the reported information in a display part 15. The transmitting user who confirms the information on the spot inputs the instruction of the continuation of the transmitting operation, it releases the reservation of the transmission control procedure, it resumes the transmission control procedure, it stops the transmission control procedure when the instruction of the stop of the transmitting operation is input, and it is returned to a reception standby state.