| 摘要 |
PROBLEM TO BE SOLVED: To reduce communication facility costs and also to easily perform the change, expansion, etc., of a terminal by each terminal adding self-address and sending a response signal when a service name and a service number which are included in a calling signal that is received coincide. SOLUTION: When service names and service numbers are set to each terminal and communication is performed between terminals, a calling out number which includes the service name and service number of the terminal of the opposite communication party is sent. The address of the terminal of the opposite communication party is acquired by making a terminal whose service name and service number coincide respond, and communication is performed by using the acquired address. In such cases, for instance, a service name 'island unit' and a service number 'one', a service name 'clear' and a service number 'one' and a service name 'closed store' and service number 'one' are set to an island unit 10. Similarly, a service name 'island unit' and a service number 'two', etc., are set to an island unit 20. |
