PURPOSE: To make duplex transmission possible by using a general subscriber's telephone set as it is between a fixed station side and mobile station side by transmitting information by a push-button dial while receiving it by sound of the telephone.
CONSTITUTION: At a fixed station, radio base station 4 is called via telephone exchange 3 through the dialing of push-button dial telephone set 1. At base station 4, information stored previously in a memory is read and converted by a sound synthesizing circuit into sound to send words, such as [Please input your number.], to telephone set 1, from which a calling-subscriber's number is sent by a push-button dial signal and then stored. Next, information on [Please input the party's number.], for example, is read from the memory and converted into sound, which is sent to telephone set 1. Similarly, the same operation is repeated and when the calling subscriber sends a signal of transmission OK to base station 4, base station 4 sends the information stored in the memory to mobile station 5.
HATSUTORI TAKESHI
INABA HIROSHI
HATA MASAHARU
Next Patent: TRAVELLING TERMINAL EQUIPMENT FOR TRAVELLING MESSAGE COMMUNICATION