PUBLIC TELEPHONE GROUPS MANAGEMENT CONTROLLING APPARATUS IN COMMUNICATING WITH PAYING PERFORMANCE

摘要

A group of public telephone management system is provided to notify the manager of the public telephones of their abnormal state quickly. The telephone management system comprises a sensor(30) for sensing abnormal state of the telephone occurring at designated parts thereof via a plurality of sensors(a1-an); a detector(40) for detecting the abnormal signals out of the sensors; a micro-controller(15) having a memory(15a) for storing pager number of the manager and ID information of the telephone, and for retrieving them in response to the signal input of the detector, and for outputting a control signal to the dialer(11) in order to generating dialing signals corresponds to the pager number; a differential amplifier(6) for amplifying the dialing signals and transmitting the signals to the line transformer irrespective of on/off state of the hook switch.