KR200366145Y1 - Dls-725 - Google Patents

Abstract

The present invention relates to circuit switching. When a computer system that is using an externally input line is interrupted and its work is interrupted, it is an equipment for transferring an externally input line to another computer system prepared in advance.

Description

Line Switching Machine {DLS-725}

The present invention relates to a device that automatically handles a manual method for connecting a modem or a DSU line connected to a system to a backup system after a system failure in transmitting signals between the system and a modem or a DSU.

Companies that do business by directly accessing the communication network (PSTN and PSDN) or the customer's system operate in connection with their system through multiple modems or DSUs. In general, V.35 or V.24 protocol is used for the line connected to the network. Modem and DSU are used as the connecting device, and less than 25 cable connections are required to transmit signals of these devices. Therefore, the present invention uses a 25pin RS232 Connector and a signal relay, uses ATmega CPU for checking compliance of received commands, and uses Uart for serial communication.

In the case of a system using multiple lines connected to each other due to a failure, when more and more complicated lines are inputted when moving all the lines connected to the system to another system, manual switching of the line takes a long time and is inaccurate. Longer times result in delays in service. The present invention aims at minimizing service delay time by automatically and accurately switching external input lines automatically and manually without emergency in case of an emergency caused by system failure.

1 is a system schematic diagram in one embodiment according to the invention;

In order to solve the above problems, the present invention provides a central controller, a central processing unit for processing commands input from the system, and a plurality of relay universal asynchronous receiver transceivers (Uart: Universal Asynchronous Receiver Transmitters) that operate by receiving signals from the central processing unit. Consists of

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating an apparatus for switching a server line when a system failure can be applied to the present invention.

In the central control unit 1, the command is received in real time through the data transmission / reception port 4 and the Uart control part, and the command is sent to the central processing unit 2. The central processing unit analyzes the entered commands and sends the analysis results back to the central control unit 1, which adjusts the state of 3, 6 and 7 according to the control command and converts the connection of RELAY 5 to the mode or DSU. Change the connection to Host A or B to complete the line change.

The front LED and manual key 3 indicate the changed status, and the relay can be changed according to the operation of the manual key to change the line to Host A or B. The rear LED and the switch also show the status of the line change, and the switch can be changed to Host A or B for each port.

Display part 6 can check received data and operation status

In the event of a system failure, the external line must be connected to an alternative device. The more complex the communication environment, the more manual switching of the line involves the risk of affecting other system connection lines.

The automatic line changer is designed to change the line of the system accurately and quickly in case of emergency or need by securing an environment that can be switched from the system construction. According to the present invention, when a UNIX system using an external line fails, the service can be easily transferred to another system without the administrator's manual work, thereby reducing the trouble time and improving customer service and reducing the burden of management.

Claims (2)

This equipment is characterized in that the central processing unit interprets the command received from the system and converts the connection of the relay through the central control unit according to the command to change the connection of the modem or the DSU to the desired system. The equipment according to claim 1, wherein the system can be used by switching between connection ports of a modem or a DSU.