REAL TIME PORTABLE TERMINAL INFORMATION CONVERSION COMMUNICATION CONTROL METHOD

PROBLEM TO BE SOLVED: To perform communication in real time by converting information through a portable terminal data converting device with respect to communication between portable terminals which have different data formats and different communication systems. SOLUTION: When a portable terminal A11 communicates with a portable terminal B15, if the terminal A11 detects the mismatching of at least either a data format or a communication system, it disconnects a line, performs communication connection to a portable terminal data converting device 16 that is connected to an exchange 13 and transmits a signal which consists of a prescribed protocol, identifier, a sending address, a sub address, receiving address and a call setting class to a radio base station 12. When the station 12 transmits to the device 16 through the exchange 13, it analyzes the sub address in the signal, transmits to the terminal B15 and also makes the device 16 and the terminal A11 communicating. Then, data of the terminal A11 is sent to the device 16 in an information format A, undergone inherent data comparison, converted into an information format B and sent to the terming B15, and the terminal A11 communicates with the terminal B11 in real time.