WIRELESS LOCAL LOOP SYSTEM AND ITS FIXED TELEPHONE SUBSCRIBER UNIT

PROBLEM TO BE SOLVED: To provide an FSU for a WLL system by allowing one FSU to attain simultaneous speech for a plurality of phone calls to decrease the number of the FSUs and to minimize the configuration of a radio section and a control section in use. SOLUTION: The fixed telephone subscriber unit FSU is a unit for the wireless local loop WLL system to which a plurality of telephone sets connect by using wired-lines and a radio base station management device and a radio base station connecting to a telephone line network connect by using radio channels and which uses the TDMA/TDD system for communication, and is provided with a control means 105 that controls connection of telephone sets and with a connection time communication slot designation means 105A that designates a communication slot used for a communication channel from the FSU to the radio base station in the case that a telephone set connected by a wired-line starts communication to the radio base station to designate so that slots used by telephone sets are not overlapped respectively.