| 摘要 |
PROBLEM TO BE SOLVED: To allow all of a plurality of radio transmitter-receiver sets connecting to a faulty radio transmission amplifier on the occurrence of a fault to be automatically blocked so as not to cause assignment of a call to a plurality of the radio transmitter-receiver sets connecting to the faulty radio transmission amplifier on the occurrence of a fault. SOLUTION: When a combination among radio transmitter-receiver sets 17 to 22 and radio transmission amplifiers 9, 11, 13 amplifying signals from the radio transmitter-receiver sets 17 to 22 is n (n is an integer 2 or over):1, the combinations are stored. Thus, on the occurrence of a fault in any of the radio transmission amplifiers 9, 11, 13, all of the radio transmitter-receiver sets in combination with a faulty radio transmission amplifier are blocked based on the stored combinations. |
