Abstract: A remote-controlled safety control system includes: an information transceiver for checking and controlling disorders for safety control, a controller for receiving alarm signals received from the information transceiver, generating alarm data after analyzing the alarm signals and then generating an alarm generation control signal, and an alarm unit, which is remotely located, for receiving the alarm generation control signal from the controller and for generating an alarm. An alarm signal processing method for maintaining a remote-controlled safety monitoring system includes the steps of: analyzing the alarm signals generated from information transceiver to generated alarm data; and checking periodically related X.25 processors and upon system disorders, generating alarm data and generating an alarm by transmitting the alarm data serially to a remotely located alarm unit.

Abstract: An asynchronous multiport controlling technique in a single processor of a remote security administration system, for example, including a scanning unit, a VAN (value added network) main unit, an X.25 interface module, and a VAN interface module to perform the asynchronous multiport communication with the VAN main unit, in which the asynchronous multiport controlling technique is carried out by collecting extracted VAN-related data from the X.25 interface module, searching out a transmitting port after collecting the VAN-related data, checking to determine whether or not the searched transmitting port is in normal state, generating a suitable request frame for a prescribed format when the transmitting port is in its normal state to transmit the request frame to the VAN main unit via the searched port, and receiving a result frame as many as the allotted number of ports after transmitting the request frame to store the result frame in a single buffer.