MULTIMEDIA PRIVATE BRANCH EXCHANGER AND PRIVATE BRANCH EXCHANGE SYSTEM

摘要

The router unit is built in the main key telephoneapparatus, the office line interface function and theindependent power supplying function are deleted in therouter unit, and the office line interface units andthe power supply unit substitute for these functions.The temperature inside the cabinet, the operated stateof the cooling fan, and the temperature and operatingpower supply voltage Vcc of the PC power supply unit,etc. are detected in the CTI personal computer, andthese monitor data are transferred to the main keytelephone apparatus and analyzed in the main keytelephone apparatus, so as to detect abnormality in theCTI personal computer and take necessary measuresagainst the abnormality.