KEY TELEPHONE SYSTEM

PROBLEM TO BE SOLVED: To provide a key telephone system capable of simply registering correspondence between a slave unit and a data terminal. SOLUTION: A control part 15 of a master unit 10 includes: at least a reservation operation detection part 15a; a call operation detection part 15b; and a registration part 15c. When the reservation operation detection part 15a detects a reservation operation from any slave unit 40 and the call operation detection part 15b detects a call operation from any data terminal 50, the registration part 15c registers the slave unit 40 and the data terminal 50 to a table 16a of a storage part 16 while associated with each other. COPYRIGHT: (C)2005,JPO&NCIPI