KR930004907B1 - Control device for inspecting terminal port - Google Patents

Abstract

The device for executing the effective operation and the maintenance function comprises: a master monitor and controller (MMC,20), which process the performance information on the system of maintenance section and transmit/receive the supervisory control information with the CPU; an in-service performance monitors (ISPM,40,80), which demand the automatic restoration and switching and generate the releasing signal; an upper/lower side slave monitor and controllers (SMC,30,70) informing the collected performance and alarm information to the MMC; a restoration and switching control equipment (RSCE,60), which improves the utility of system by providing the sustaining communication service.

Description

Relay Monitoring System for 565Mbps Optical Transmission System

1 is a schematic diagram of a 565 Mbps optical transmission system.

2 is a block diagram of a monitoring control device.

3 is a block diagram of the monitoring control device in the relay station.

4 is an internal configuration diagram of a main surveillance controller (MMC).

5 is a firmware diagram of the MMCU of the main surveillance controller (MMC).

6 is a firmware diagram of the MIOU of the main surveillance controller (MMC).

7 is a diagram illustrating an internal configuration of a sub-monitoring controller (SMC).

8 is a schematic diagram of the firmware of the sub-monitoring controller (SMC).

9 is an internal configuration diagram of the performance monitor (ISPM).

10 is a firmware diagram of the performance monitor (ISPM).

11 is an internal configuration diagram of an indicator (DPE).

12 is a diagram showing the firmware configuration of an indicator (DPE).

Figure 13 is an internal configuration of the switching device.

14 is a configuration diagram of the firmware of the switching device.

* Explanation of symbols for main parts of the drawings

1,4: single station supervisory control device 2: repeater supervisory control device

3: relay station monitoring and control device 10: service channel interface (SCI)

20: main monitoring controller 30: sub-monitoring controller

40: performance monitoring 50: indicator

60: switching device

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a supervisory control device in charge of operation and maintenance functions in a 565 Mbps optical transmission system, and more particularly to a relay station supervisory control device.

Surveillance and control devices of the early and conventional optical transmission devices have encountered some problems in order to introduce a new system and operate it normally because of the importance of the system operation function determined by the operator. Firstly, a lot of labor costs must be spent because operators must always be present in every country for manual operation. Secondly, it is highly dependent on the judgment of the operator to monitor and analyze the performance and operation status of the system. You have to spend time and money, and third, the system's availability due to operator error can reduce the availability of the system. To solve this problem, many national or foreign transport network operators have developed their own monitoring and control devices to efficiently operate their systems and to easily maintain them for beginners. An integrated operation and maintenance system is being developed for integrated operation and maintenance. In addition, research on the development of a standard synchronous optical network around CCITT continues to make recommendations in a wide range of fields, from system design to installation, operation and maintenance.

Therefore, the present invention has the characteristics of automation and centralization, monitoring control in a relay station having cost reduction, time saving, and in-service monitoring to easily and efficiently carry out the above-described conventional operation and maintenance of the optical transmission system. The object is to provide a device.

In order to achieve the above object, the present invention provides a relay station supervisory control apparatus connected to the upper and lower service interface means for providing information and other short-circuit transmission channel of the supervisory control apparatus of the 565 Mbps optical transmission system and in charge of operation and maintenance functions. Main monitoring control means connected to the upper and lower service channel interface means for collecting and processing information and performance information about all the systems in the maintenance interval to output to the outside and to send and receive monitoring control information with the centralized monitoring control device; Upper and lower performance monitoring means connected to the optical station and the optical relay through the service interface means to collect and output the performance information and alarm information of the line and subordinate signals and to generate the automatic transfer request and release signal; Collect and process performance information and alarm information that are output of upper and lower performance monitoring means The faulty operation line is connected to the main and supervisory control means, and the upper and lower side supervisory control means for controlling and monitoring the national history environment and the automatic transfer request and the dismantling signal which are outputs of the upper and lower performance monitoring means are inputted. A switching means for performing a function of improving the availability of the system by providing a continuous communication service by switching to a spare line, and displaying information collected by the main monitoring control means, and displaying and printing various information from the switching means. And a display means for performing an operator command using a function key.

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

1 is a configuration diagram of a 565 Mbps optical transmission system. In this configuration, one repeater and one drop / insert relay station exist between both stations, but in practice, a plurality of repeaters and drop / insert relay stations may be mixed depending on the domestic transmission network configuration. There may be a maximum of 22 repeaters and drop / insert repeaters.

The 565Mbps optical transmission system is composed of optical station equipment (LTE), optical repeater (REG) and supervisory control device (MCS), and is divided into single station, repeater and drop / insert relay station according to the configuration of these devices. The optical station equipment is where the 565 Mbit / s main signal is multiplexed / demultiplexed into DC3 or DS4 dependent signals, and there is a preliminary switching function. The optical repeater is a place to reproduce the weakened 565Mbps optical signal through a long relay distance, and there is no switching function. Tributary signals are DS3 (44.736 Mbps) and DS4 (139.264 Mbps) and are connected to LTE (Line Terminal Equipment) through a switch matrix for rotational switching.

A single station is where all circuits are multiplexed / demultiplexed with dependent signals and exist at both ends of the maintenance interval. The drop / insert relay station is a station in which both the optical station device and the optical relay device exist together, and the repeater is composed of all the optical relay devices only.

2 is a configuration diagram of the entire monitoring control device (MCS) to which the present invention belongs, where 1 and 4 are single station monitoring control devices, 2 is a repeater monitoring control device, and 3 shows a relay station monitoring control device, respectively.

Single station supervisory control devices (1, 4) include restoration and switching control equipment (RSCE), master monitor and controller (MMC), display and printer equipment (DPE) and secondary supervisory controller (SMC: It consists of Slave Monitor and Controller, and In-Service Performance Monitor (ISPM). On the other hand, the present inventors relay station monitoring device (3) has a sub-monitor controller for each of the LTE in the upper direction and the LTE in the lower direction, respectively, the repeater monitoring control device (2) may be composed of only the sub-monitoring controller and performance monitoring. However, according to the operator's choice, the sub-monitoring controller and the indicator are connected to collect and display various information from the optical relay device in the repeater. Each level provides alarm and status information collection and display, performance information collection and display, and transfer and return functions through unique interface conditions and protocols.

The single station supervisory control unit (1, 4) is composed of 5 modules of supervisory control system using 8-bit supervisory control and hierarchical structure. And provide printing and transfer and return functions. The repeater monitoring control device 2 is responsible for monitoring the state of the repeater REG and controlling the national history environment.

The present inventors monitor that the relay station supervisory control device 3 monitors and controls the states of the optical end station device and the repeater REG, and the functions of each module are the same as those of the single station supervisory control device except that two sub-monitoring controllers exist up and down. Do.

3 is an internal configuration diagram of the relay station monitoring apparatus 3 of the present invention. In FIG. 10, 11 is a service channel interface unit, 20 is a main monitoring controller, 30 is an upper monitoring controller (W-SMC), and 70 is a lower monitoring controller. (E-SMC), 40 is an indicator, 50 is a performance monitor, and 60 is a switching device.

The upper and lower service channel interface units 10 and 11 are responsible for providing information and other short-circuit transmission channels of the supervisory control apparatus of the 565 Mbps optical transmission system, and the internal structure of the upper and lower service channel interface units 10 and 11 There is a bar.

The main monitoring controller 20 is configured as two general microprocessor units. The board using Z80 CPU handles information transmission and reception with the main monitoring control period and the sub-monitoring controller, and the board using HD 64180 CPU is configured to handle information transmission and reception with the indicator and the centralized monitoring controller. Information transmission and reception is performed through 2Kbyte DPRAM (Dual Port Random Access Memory), and information transmission and reception with the indicator is also performed through another 2Kbyte DPRAM. Internal configuration diagram of the MMC is shown in FIG.

4 shows the internal configuration of the main monitoring controller (MMC) 20.

Looking at the internal configuration of the main monitoring controller (MMC) 20 with reference to the drawings in detail, the CPU (HD64180; 400) is a one-chip device having a Z80 series CPU of Hitachi, Inc. and input and output devices such as CTC, SIO. The CPU 400 performs information transmission / reception with the indicator 50 through the dual port RAM (hereinafter referred to as DPRAM) 410 and neighbors with the information of the upper monitoring controller 30 collected through another DPRAM 420. Information of the main monitoring controller 20 is sent to the display device through the DPRAM 410, and the contents thereof are stored in the RAM 402. In addition, through the connection between the CMCS and the serial communication element inside the CPU 400, the information of the entire 565 Mbps section or all the national stations collected through the DPRAM 420 is transmitted on demand. The 32 Kbyte ROM 401 is filled with instructions to be executed by the CPU 400 and the 448 Kbyte RAM 402 stores all the information collected from the DPRAM 410 and the DPRAM 420. The DPRAMs used here were implemented with AM2130 devices.

The Z80 CPU 430 collects the operation and operation status of the 565 Mbps optical transmission device of the own station and the other station through the communication control element 450 with the support of the interrupt controller 440, and writes them to the DPRAM 420. Read it and process it. Also, the collected contents are temporarily stored in the RAM 432 for retransmission. The interrupt controller 440 is implemented with an Intel 8254 device as a preferred embodiment.

ROM 431 is composed of instructions to be executed by CPU 430 and communication control device 450 uses MI8952 (451 and 452) for communication with neighboring MMC 20. MT8952 (451) is used for collecting the lower station information, and MT8952 (452) is used for collecting the upper station information.

The communication element for collecting information from the sub-monitoring controller 30 adopts a half duplex communication method using the MT8952 453.

The interrupt controller 440 uses the Intel 8295 to handle the interrupt since the MT8952 communication controller cannot send an interrupt vector to the Z80 CPU 430.

The main monitoring controller 20 is located in each end station and drop / insert relay station to collect and process information and performance information on all systems in the maintenance section from the sub-monitoring controller 30 for display and printing through an indicator and centralized monitoring. The collected information is transmitted to the information polling request of the controller. In addition, the switching and return-related information collected through the indicator 50 is provided to the centralized monitoring controller, and vice versa, various commands from the centralized monitoring controller are transmitted to the switching device 60 through the indicator.

The upper and lower side supervisory controllers 30 and 70 are each composed of one general microprocessor board, a relay driving circuit for controlling the national environment, and an input / output buffer circuit for monitoring the status thereof. .

Referring to the drawings in detail the configuration of the sub-monitoring control device 30 or 70, the sub-monitoring control device 30 or 70 is a Z80 CPU (a subject that actually performs the operation programmed in the 32 Kbyte ROM (710) ( 700 and 32 Kbyte ROM 720 as the information storage area collected by the CPU 700, the CTC 731 supplies the clock used in the MT8952 (780) and the CTC 732 to perform time-related tasks It is used for time-generated interrupts.

The watch dog timer (WDC) 740 is a hardware circuit for detecting and restarting an abnormal operation in the software execution of the sub-monitoring device 30.

LED 750 indicates the presence or absence of an alarm in each 565 Mbps transmission line collected by the performance monitor 40.

An input buffer 702 is used to collect state information of the station itself, and an output buffer 701 is used as a relay drive signal transmitter for the station control. The USART 760 is mounted to confirm various information collected by the CPU 700 in the development and testing stage or as a substitute for an indicator in a repeater using an external terminal or a computer terminal device.

The DIP switch 770 distinguishes between the address and the type (for single station / relay station / relay station) of the sub-monitoring control device 30. The MT8952 (780) is used to collect and transmit information between the MMC 20 and the ISPM 80.In the relay station, the upper SMC 30 is MT8952 (781), and the local MMC and the upper (east) MMC, and the lower side. The SMC 70 transmits / receives information to and from the local MMC and the lower (west) MMC via the MT8952 782. The MT8952 783 is used for the upper (east) MMC and the local MMC in the lower end station, and the MT8952 (782) is used for the lower (west) MMC and the local MMC communication in the upper end station.

The MT8952 783 is used to collect 565 Mbps optical transmission line related alert and status information from the ISPM. The input buffer 790 is used to monitor the asynchronous state of the 210 Kbps signal produced by the SCI 10.

The upper sub-monitor controller 30 collects and processes performance information and alarm information from the performance monitors 40, reports the main monitoring controller 20, and controls and monitors the national history environment. The lower sub-monitor controller 70 collects and processes performance information and alarm information from the performance monitors 80 to report to the main monitoring controller 20 and controls and monitors the national history environment. Each performance monitor belonging to (40) and (80) is composed of one general microprocessor board, and its internal configuration is shown in FIG.

As shown in the figure, the performance monitors 40 and 80 include CPU 900, ROM 910, RAM 920, CTC 930, WDT 940, DIP switch 950, MT8952 (960), It consists of an input buffer 970, an output buffer 980, and the like.

The CPU 900 collects and transmits and receives information while controlling the input / output (I / O) elements in the unit by a program built in the ROM 910. The ROM 910 and the RMA 920 are memories for storing instructions to be executed by the CPU 900 and information generated as a result of the execution, and the CTC 930 is for communicating with the sub-monitoring controller 30. A timer / counter for interrupt processing and the timer task (1020 in FIG. 10) of FIG. 10 to be described later.

The WDT 740 detects a software failure and allows the performance monitor 40 to be reactivated by resetting the CPU 900. The DIP switch 950 provides the address and type of the performance monitor 40 (single station, relay). MT8952 (960) is a device for transmitting and receiving information with the sub-monitoring controller (30).

The input buffer 970 collects alarm and performance information from the 565Mb / s optical transmission line, and the output buffer 980 analyzes the information collected by the input buffer 970 by the CPU 900 and requests the transfer to the RSCE 60. This chip generates a release signal.

The performance monitors 40 and 80 are directly connected to the optical end station (LTE) and the optical relay (REG) to collect and process the performance information and alarm information of the line and subordinate signals and report them to the subordinate supervisory controller, which is their upper level. It has a function and generates a function for the automatic transfer request and release signal to the switching device (60).

The indicator 50 is a general microprocessor board, the internal configuration of which is shown in FIG. The hardware of the indicator is an LCD for displaying information and its controller, a keypad for controlling the information, a small printer and driver for printing the information, LEDs for displaying alarms and status, information exchange with the main monitoring controller and switching device. Dual port (RAM) for backup, back-up RAM for storing information when power is off, real time clock (RTC) for providing time information, ROM and RAM, watchdog for firmware malfunction Watch Dog) consists of a timer.

The main function of the display unit 50 is to display and print the monitoring control information and the transfer-related information, and to perform an operator command using a function key.

The switching device 60 is composed of a general microprocessor board, switching request detection and switching status display, and an input / output buffer circuit board for driving a switching relay and a relay matrix board, and transfers a failed operating circuit to a spare circuit to provide continuous communication service. To improve the availability of the system.

Data flow between units associated with the switching device is shown in FIG.

The Restoration Switching Control Unit (RSCU) 131 interfaces with the indicator 132 through the DPRAM. The 32Kbps Tx and Rx clocks are supplied from the SCI 130 at the RS422 level and communicate with the adjacent switching device through the SCI.

Transfer request and relay drive signal to and from TTL level with FSCU 133. The Forced Switching Control Unit (FSCU) 133 receives the automatic transfer request and the transfer release request from the ISPM 135 at the RS232C level, converts it to the TTL level, and transmits it to the RSCU 131. The relay driving signal from the RSCU 131 is received at the TTL level, converted to the RS232C level, and transmitted to the relay panel 135. The relay driving signal due to forced transfer is transmitted to the relay panel 135. The relay panel 135 is composed of a switch matrix unit configured as a relay circuit to drive a receiving side and a switch matrix unit configured as a relay circuit to drive a transmitting side. It is latched so that the contact state does not change due to a malfunction of the switching device.

5 is a firmware flowchart of the MMCU of the main surveillance controller (MMC). The MMCU handles SMC polling, DPE request processing, centralized monitoring controller request processing, and communication between MMCUs. The MMCU consists of an initialization module 510, an interrupt handler 520, and a main-job 530. The initialization module initializes the RAM test and timer. The interrupt handler is a 50ms timer interrupt routine for calculating the time used within the MMCU.

The main routine consists of five modules. RXMIOU module 531 to read and process data transmitted by MIOU, TXMIOU module 532 to send data to MIOU, RXDPE module 532 to read and process data sent by DPE, and to send data to DPE There is a TXDPE module 534, and a BACK-PRO module 535 for exchanging national company environment information with the MMCU of another station.

6 is a firmware flowchart of the main surveillance controller (MMC).

MIOU is responsible for information transfer between MMC and SMC using communication controller element MT8952. It consists of a MIOU initialization module 610, an interrupt handler 620, and a main-job 630.

The initialization module 610 first tests the RAM, then initializes the MT8952s, initializes the Intel 8254 device to generate a 10msec interrupt, and initializes the Intel 8295a device to send the MT8952's interrupt vector to the MIOU. Since the MT8952 is not a Z80 peripheral, it cannot send an interrupt vector to the Z80 CPU, so it uses the Intel 8295a device.

The main-job consists of five modules. The RXMMCU module 631 processes data reception from the MMCU via DPRAM AM2130 and the TXMMCU module 632 processes data transmission to the MMCU via DPRAM AM2130.

The SMCCOMM module 633 is a routine that transmits and receives data in a half duplex manner between the MIOU and the SMC.

West-COMM module 634 is a routine that receives data from the MIOU in the west direction and allows the MMCU to read through the DPRAM. The East-COMM module 635 receives data from the MIOU in the east direction and the MMCU receives the DPRAM. Routine to read through.

8 is a firmware flowchart of a sub-monitoring controller (SMC).

A firmware initialization module 810, an interrupt handler 820, a main-job 830, a digital alarm collection, and a system LED driving module 840 of the sub-monitoring controller. The initialization module 810 initializes the CPU, RAM, CTC, MT8952 and the like and sets a stack pointer, various buffers, and a program. The processor of the sub-monitoring controller performs the initialization module 810 after the power reset, performs the configuration module 811 to monitor the performance of the reserve circuit, and monitors the main-job 830. Enter In this state 812, if there is a job registered in the interrupt hander module, the corresponding main-job 830 is performed. 830 is an MMC1-job 831 that processes information request and response data from two different MMCs, an MMC2-job 832 and an ISPM-job 833 that analyzes response data of performance monitoring; It consists of timer-jobs 824 for calculating the time used in the sub-monitor. The tasks handled at 831 and 832 are intensive alert response, detailed alert response, performance information response, response to uncertain command reception, control command execution and control status response, response to reserve circuit configuration request, and the like. In 833, it is responsible for the collection and processing of the request and response for the performance monitoring configuration, the alarms and the performance information from the performance monitoring. The interrupt handler 820 includes the INTSVO 821, which is an interrupt registration routine for communicating with MMC1, the INTSV1 822, which is an interrupt registration routine for communicating with MMC2, the INTSV2 823, an interrupt registration routine for communicating with ISPM, and time calculations. The 50msec interrupt registration routine is composed of INTSV3 (824).

10 is a firmware flowchart of the performance sensor (ISPM). The firmware of the performance sensor is composed of an initialization module 1010, an information collection module 1020, and an information transmission module 1030. The 1010 module initializes a CPU, a RAM, a CTC, an MT8952, and sets a stack pointer, various buffers, and flags.

The information collection module 1020 collects and analyzes alarm information and performance information from LTE and REG. This module is composed of 10mesc cycle information collection module, 1 second cycle information analysis module, and handwriting information collection module. The 10mesc periodic information collection module consists of asynchronous alarm collection and processing routines and parity error collection processing routines. The 1 second interval information analysis module consists of an error type analysis routine and a transfer request and removal routine. The information transmission module 1030 is composed of an information request routine of a sub-monitor controller which is a higher level and an information transmission routine of a performance monitor.

11 is an internal configuration diagram of an indicator, in which 1100 is a CPU, 1110 is a ROM, 1120 is a RAM, 1130 is a backup RAM, 1140 is an RTC, 1101 is a DPRAM, 1150 is an LED, 1160 is a controller and LCD, and 1170 is a PIO. And printer, 1180 represents a PIO and a keypad, respectively.

The internal configuration of the indicator will be described in detail with reference to the drawings.

The CPU 1100 controls the input / output (I / O) elements in the module by a program built in the ROM 1110, and transmits and receives information and displays the information on the LCD.

The ROM 1110 and the RAM 1120 are memories for storing instructions to be executed by the CPU and information generated as a result of the execution, and there is a backup RAM 1130 for storing information when the power is turned off. The RTC 1140 provides time information, and uses the DPRAM 1101 for exchanging information with the main monitoring controller and the DPRAM 1102 for exchanging information with the RSCE. LCE and controller 1160 for displaying LED 1150 information indicating an alarm, PIO and printer 1170 for requesting or controlling information and printing the result, PIO for national initialization information and user operation key-in, and A keypad 1180, and an SIO 1190 mounted to verify an initial development indicator operation state.

12 is a firmware flow diagram of an indicator (DPE).

The firmware of the indicator (DPE) clears the RAM, turns off the LEDs, initializes the PIO, reads the current time from the RTC, resets the reset time, and reads the transmission data from the main monitoring controller. Main monitor controller command recognition unit 1220, the main monitor control for transmitting data to the main monitor controller command transmitter 1230, switching device command recognition unit 1240 to read and analyze the transmission data from the switching device, Switching device command sending unit 1250 for transmitting data to switching device, time-job (1260) for printing accumulated performance information in units of 24 hours, changing LCD mode, processing function key input from operator or printing data And an interrupt processing unit 1270. The function key processing unit is divided into three major parts. There is an MMC ROOT that can request a command to the MMC, an RSCE ROOT that can request a command to the switching device, and a DPE ROOT to input data for supervisory control operation.

In the MMC ROOT, an integrated alarm request is required to know the aggregated alarm status of an optical transmission system, a detailed alarm request is required for alarm information on a specific line of a specific station in the optical transmission system, and a performance of a specific line of a specific station in the optical transmission system. Performance information request for information, control status request for checking the control status of a specific station among optical transmission systems, control request for remote control of the environmental status of a specific station among optical transmission systems, and communication status between the supervisory control devices of the optical transmission systems. There is a request for communication status information to know, and RSCE ROOT has a request for a switchover and a return that can be switched or returned to the operating line, a switch test request to check the normal operation between the switching units of the operation line, and lock the operation line. Lockout request, disassembly request, operation line The switching state switching devices such as fault diagnosis request to find out.

DPE ROOT has the function to set the current year, month, day, hour, minute, second and hour, minute and second for printing alarm and to distinguish SMC that can communicate with MMC.

14 is a configuration diagram of the firmware of the transfer machine.

The firmware of the switching device is largely composed of 5 modules. The initialization unit 1410 initializes the Z80 CPU, CTC, RAM, SIO, etc., and sets a stack pointer, various buffers, and flags. The automatic transfer request recognition unit 1420 receives the automatic transfer request from the performance monitor, and transmits data to an adjacent transfer device to determine priority comparison, automatic lockout, spare line failure, and the like to perform the transfer and return. The indicator request recognition unit 1430 receives and performs a manual transfer and transfer recovery request from the indicator, a manual lot out and a manual lot out release request, a switch test request, a transfer device hardware test, and a transfer state request. The neighbor switching device request and response recognition unit 1440 performs a bridge request and a switching response from the neighbor switching device.

The monitoring unit 1450 performs the processing of the switching device LED alarm, the automatic lockout release, the monitoring of the transfer or release in the transfer section for each system before and after the transfer, and the relay state monitoring after the transfer.

Therefore, the present invention configured and operated as described above has an application effect of providing a monitoring control device in a relay station capable of performing efficient operation and maintenance functions.

Claims (4)

A relay station supervisory control device connected to an upper and lower service interface means (SCI; 10) for providing information of a supervisory control device of a 565 Mbps optical transmission system and a different short-circuit transmission channel and performing operation and maintenance functions. Main monitoring control connected to the service channel interface means (SIC) 10, 11 to collect and process information and performance information of all systems in the maintenance interval, output them to the outside, and transmit and receive monitoring control information with the centralized monitoring controller. It is connected to the optical end station (LTE) and the optical relay (REG) through the means (MMC; 20) and the service interface means (SCI; 10) to collect and output the performance information and alarm information of the line and slave signals; Performance information which is an output of the upper and lower performance monitoring means (ISPM; 40, 80) and the upper and lower performance monitoring means (ISPM; 40, 80) for generating an automatic switching request and a release signal. The upper and lower side supervisory control means (SMC; 30, 70) for collecting and processing the beam information and reporting it to the main surveillance control means (MMC; 20) and controlling and monitoring the national history environment, and the upper and lower performance monitoring. It is connected to receive the automatic transfer request and release signal, which is the output of the means (ISPM: 40, 80), and transfers the failed operation line to the spare line to provide continuous communication service to perform the function of improving the availability of the system. (RSCE; 60), and the information collected by the main monitoring control means (MMC; 20), and display and print a variety of information from the switching means (RSCE; 60), operator commands using a function key Relay station monitoring control device characterized in that it comprises a display means (50) for performing. 2. The relay station monitoring and control device according to claim 1, wherein the main monitoring control unit (MMC) 20 includes two microprocessor units and a dual port 2Kbyte DPRAM for connecting the two microprocessor units. . 2. The control unit as claimed in claim 1, wherein the sub-monitoring control means (SMC) 30 or 70 includes one microprocessor unit and a relay driving circuit connected to the microprocessor unit and an input / output buffer circuit for monitoring the state thereof. Relay station monitoring and control device characterized in that. 2. The relay station monitoring control apparatus according to claim 1, wherein the performance monitoring means (SIPM) 40 or 80 includes one microprocessor unit.

Images