Patent ID: 7639602

Claim:
A radio base station of a plurality of radio base stations connected to a base station control apparatus, comprising: a VPI/VCI filter to store a VPI/VCI value or a no-set identifier, the no-set identifier indicating that the radio base station is in an unconfigured state; a data reception section to: receive a first VPI/VCI value from the base station control apparatus during a staff-up sequence of the radio base station, store the first VPI/VCI value in the VPI/VCI filter, receive a transmission message signal from the base station control apparatus also during the start-up sequence of the radio base station, and generate an error signal to signify an error state when the transmission message signal includes a second VPI/VCI value different from the first VPI/VCI value; and a processor, connected to the VPI/VCI filter and the data reception section, to: detect the error signal, determine whether the error state continues for at least a predetermined time duration during the start-up sequence of the radio base station, and store the no-set identifier in the VPI/VCI filter when the error state is determined to continue for at least a predetermined time duration during the start-up sequence of the radio base station.