KR20000072942A - Method for remote control using MD in exchange system - Google Patents

Abstract

PURPOSE: A remote control method using an arbitration device in a switching system, is provided to use an internal virtual serial port of the switching system to maintain the system with a medium system having a local area network(LAN), so as to implement a remote terminal function and process messages. CONSTITUTION: A network management system(NMS) transmits a telnet prompt message to an ethernet interrupt protocol(ENIP). The ENIP transmits an available port survey requesting message to an MMP device status tester(MMDST). If available ports do not exist, the MMDST transmits an MMC completion signal message to the ENIP. If available ports exist, the MMDST transmits a power-on signal message to a shell block of a man machine subsystem(MMS). The SH block of the MMS transmits a signal for initializing ports to a menu and command analysis block. The MC block transmits a data reset signal message to the ENIP. The ENIP transmits a message of storing a telnet performing result to the NMS.

Description

Method for remote control using arbitration device in exchange system {Method for remote control using MD in exchange system}

The present invention relates to a remote control method using an arbitration apparatus in an exchange system, and more particularly, by connecting a logical local terminal of an exchange to an arbitration apparatus interworking with a charging apparatus or a system management network connected to an exchange, and remotely via a high-speed Ethernet network. The present invention relates to a remote control method using an arbitration device in an exchange system that enables system maintenance and management.

1 is a block diagram of a conventional exchange system, in which a serial port (RS-232C) is provided for connecting an operation terminal to operate an exchange system as shown in the drawing. And the necessity of management is emerging as a new problem.

In the case of the local terminal, the serial communication with the exchange, and the separation distance is very short, the operation method to the port 0-11 shown. Terminals that can be connected are personal computers, general serial terminals (Dummy CRT), printers, and teletypes (TTY).

For remote control, the terminal must be connected remotely from the exchange, but the direct connection is not possible because the serial port is not available for tens of meters.

In addition, even if the range of use can be connected several tens of kilometers away, it is difficult to actually maintain and manage the system remotely because the connection line to be actually connected must consist of seven lines.

Accordingly, an object of the present invention, which was devised to solve the problems of the prior art operating as described above, is a remote terminal that maintains and manages a system at a remote location with an intermediary system having a LAN network using an internal virtual serial port of a switching system. It is to provide a remote control method using a mediation device in an exchange system that can implement functions and process messages.

1 is a block diagram of a conventional exchange system.

2 is a configuration diagram of an exchange system applied to the present invention.

Figure 3 is a block diagram of a port for a remote terminal applied to the present invention.

Figure 4 is a remote terminal connection request method applied to the present invention.

5 is a method for performing a remote terminal MMC applied to the present invention.

6 is a remote terminal disconnection method applied to the present invention.

7 is a processing method for abnormal termination applied to the present invention.

<Explanation of symbols for the main parts of the drawings>

101: exchange system 102: track

103: arbitration device (MD) 104: cable

105: Ethernet LAN network 106: equipment

IPC: Inter Processor Communication

MMP: Man Machine Processor

MD: Mediation Device RCRT: Remote CRT

NMS: Network Management System

ENIP: Ethernet Interrupt Protocol

MMDST: MMP Device Status Tester

MMS: Man Machine Subsystem

SH: Shell MC: Menu And Command Analysis

MC_init: MC_initial MC_rmmp: MC_remote main process

OC: Output Command

An embodiment of a preferred remote terminal connection request method according to the present invention devised to achieve the object as described above,

Transmitting a "Telnet Prompt" message from the Network Management System (NMS) to the Ethernet Interrupt Protocol (ENIP);

Transmitting an “available port investigation request signal” message from the ENIP to an MMP device status tester (MMDST);

Transmitting a "MMC End Signal" message from the MMDST to the ENIP when there is no available port;

Transmitting a "power on signal" message from the MMDST to an SH (Shell) block of an MMS (Man Machine Subsystem) when there is an available port;

Transmitting a signal for initializing a port from an SH block of the MMS to a menu and command analysis (MC) block;

Transmitting a “data reset signal” message from the MC block to the ENIP;

And transmitting a message to store the result of telnet execution from the ENIP to the NMS.

An embodiment of a preferred method for performing a remote terminal MMC in accordance with the present invention,

Sending a CRT MMC window message from the NMS to the ENIP;

Transmitting an “MMC request signal” message from the ENIP to MC_init;

Transmitting a "user input signal" message from the MC_init to MC_rmmp;

Transmitting a "user output signal" message from the OC (Output Command) of the MMS to the MC_rmmp;

Transmitting a “data reset signal” message from the MC_rmmp to the ENIP;

And transmitting a message to store the result of telnet execution from the ENIP to the NMS.

An embodiment of a preferred remote terminal disconnection method according to the present invention,

Sending a "QUIT" input message from the NMS to the ENIP;

Transmitting an “MMC request signal” message from the ENIP to the MC of the MMS;

Transmitting a “MMC End Signal” message from the MC of the MMS to the ENIP;

Transmitting a "stop request signal" message from the ENIP to an MMDST;

Transmitting a "stop reset signal" message from the MMDST to the ENIP;

Sending a "telnet prompt" output message from the ENIP to the NMS;

The MMDST transmits a "power on signal" message to the SH block of the MMS.

An embodiment of the preferred abnormal termination treatment method according to the present invention,

Sending a "Use Status Check" message from the ENIP to MC_rcrt;

Transmitting a “timeout signal” message from the MC_rcrt to MC_rcrt;

The MC_rcrt transmits a "power on signal" message to the MMDST.

If the "Use Status Check" message is not received from the MC_rcrt within a specific time, the Inservice port is changed to the "FBLK (Fault Blank)" state.

The specific time is based on 5 minutes.

An embodiment of a remote control method using an arbitration device in a preferred exchange system according to the present invention,

Transmitting a "Telnet Prompt" message from the Network Management System (NMS) to the Ethernet Interrupt Protocol (ENIP);

Transmitting an “available port investigation request signal” message from the ENIP to an MMP device status tester (MMDST);

Transmitting a "MMC End Signal" message from the MMDST to the ENIP when there is no available port;

Transmitting a "power on signal" message from the MMDST to an SH (Shell) block of an MMS (Man Machine Subsystem) when there is an available port;

Transmitting a signal for initializing a port from an SH block of the MMS to a menu and command analysis (MC) block;

Transmitting a “data reset signal” message from the MC block to the ENIP;

Transmitting a message to store a result of telnet performance from the ENIP to the NMS;

Transmitting a CRT MMC window message from the NMS to the ENIP;

Transmitting an “MMC request signal” message from the ENIP to MC_init;

Transmitting a "user input signal" message from the MC_init to MC_rmmp;

Transmitting a "user output signal" message from the OC (Output Command) of the MMS to the MC_rmmp;

Transmitting a “data reset signal” message from the MC_rmmp to the ENIP;

Transmitting a message to store a result of telnet performance from the ENIP to the NMS;

Sending a "QUIT" input message from the NMS to the ENIP;

Transmitting an “MMC request signal” message from the ENIP to the MC of the MMS;

Transmitting a “MMC End Signal” message from the MC of the MMS to the ENIP;

Transmitting a "stop request signal" message from the ENIP to an MMDST;

Transmitting a "stop reset signal" message from the MMDST to the ENIP;

Sending a "telnet prompt" output message from the ENIP to the NMS;

The MMDST transmits a "power on signal" message to the SH block of the MMS.

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

2 is a block diagram of an exchange system for applying the present invention, as shown therein, an exchange system 101 which internally provides a serial port, and an internal interprocessor communication module (IPC) of the exchange system 101. Cable 102 to connect in the same RS-422 protocol format, mediation device using a workstation, cable 104 to connect to a remote system, and an Ethernet network using a dedicated or public network ( 105) and the equipment 106 to be used as a remote terminal.

The physical ports of RS-232C provided by MMS (Man Machine Subsystem) of MMP (Man Machine Processor), which are actual processors that provide ports in the exchange system 101, are 16 ports 0 to 15.

The equipment 106 refers to a computer, workstation, host computer and the like.

There are two ways to provide a remote port:

1. Designate 4 ports of 12 ~ 15 out of 16 physical ports for remote terminal (Remote CRT: RCRT). In this case, the four ports assigned for the remote terminal are not available as local ports.

2. Leave 16 physical ports and add as many logical ports as you need. In this case, the port used for remote use does not affect the local port.

On the other hand, the port for the remote terminal is configured according to the above two methods. In the first method, four ports 12 to 15 are allocated for remote use as shown in FIG. 3, and the matching between the arbitration device (MD) and the remote center is performed. Telnet of Transmission Control Protocol / Internet Protocol (TCP / IP) is used.

The second method is the same as the first method except using the logical port 16 and later without using the physical port.

First, the remote terminal connection will be described.

Set up the remote terminal mode to the VT100 mode, perform Telnet using the IP address, login ID and password provided by the pre-exchanger, and ENIP (Ethernet Interrupt) when the remote Telnet connection request is completed. Protocol) provides an ENIP connection login and password, and the RCRT screen appears on the monitor when the connection is complete.

If the available port of the remote terminal (RCRT) is FULL, an error message indicating that there is no available port is output.If the remote terminal is available, it is connected to ENIP, and the screen format data of the CRT mode is transmitted to ENIP. To send.

The ENIP then provides a data bypass function between the remote terminal and the MMS (Man Machine Subsystem) of the MMP (Man Machine Processor). The number of remotely available windows is limited to four, and when the remote user inputs "QUIT" Perform port revocation operations inside the MMS and notify ENIP that the remote user has terminated its Man Machine Communication (MMC).

When ENIP is notified of the remote MMC termination, Telnet provides the same Telnet prompt as the first time of Telnet. If you enter the "exit" command at the ENIP prompt, the Telnet connection is terminated.

Next, the message flow chart of the network management center and the exchange period is as follows.

-Request for connection of remote terminal (RCRT)

If you enter "telnet ip_addr" to access ENIP from the network management center, the login and password of ENIP is required, and if you enter a valid login and password, the remote terminal (RCRT) is connected by connecting to the corresponding I / O port of the exchange. (s10).

When the ENIP transmits an "available port probe request signal" to the MMDST (MMP Device Status Tester) block (s11), the MMDST checks whether there is an available I / O port. Signal ", and if there is an available port, transmits a" device power on signal "to the shell (Shell: SH) block (s12).

The shell block transmits a signal for initializing a port to a menu and command analysis (MC) block, and the MC block generates "MC_main_rcrt" which is a child process for a remote terminal (s13).

The MC block transmits a control character to the RCRT, generates a head, a console and an input window, and configures an environment in which an MMC command can be executed. The control character is transmitted to the ENIP by putting a "data reset signal" message in the MC block. (S14).

The control character transmitted through the ENIP provides the same window function as the CRT of the main body of the exchange in the VT100 mode virtual terminal of the remote system.

Remote Terminal (RCRT) MMC

In order to process the command together with the CRT (monitor) while the remote terminal is connected (s20), the data is transferred to the MC block with the "MMC request signal" (s21), and the MC block is transferred to the MC_main_rcrt process through MC_init. Input signal " (s22), and after performing the actual MMC command, the result message (s23) is loaded with data on the "data initialization signal" (s24) and transmitted to the command NMS remote terminal port (s25).

-Disconnect the remote terminal (RCRT)

When the terminal of the remote terminal enters "QUIT" while the remote terminal is connected in the network management center (s30), the ENIP transmits the "MMC request signal" to the MC block (S31), and the input command in the MC block is "QUIT". If it is recognized as the termination of the remote terminal connection and transmits the "MMC end signal" to the ENIP (s32).

The ENIP receiving the "MMC end signal" transmits a "stop request signal" to the MMDST block (s33) to inform that the remote CRT is terminated, and receives a "stop reset signal" in response (s34). Print a prompt (s35) and close the connection.

The MMDST sends a "power off signal" message to the shell (SH) block of the MMS as the corresponding port is disconnected (s36) to terminate all child processes of the port and sets the status of the port to "00S (Out Of Service)". To ".

-Processing at abnormal end

If the remote CRT is abnormally terminated in the network management center, the corresponding I / O port of the exchange continues to remain in the service state. Therefore, if the “IP check” is sent to the exchange every 4 minutes and 30 seconds in the ENIP (s40), the MC block Assumes that the port is in use and keeps it in service.

If the "Use Status Check" message is not received from the MC block within 5 minutes, the 5 minute timer times out and changes the port which is in service by the "Timeout signal" s41 to the "FBLK (Fault Blank)" state. Accordingly, the "power off signal" message is transmitted to the MMDST (s42).

Next, the relation change for changing the shape of the port will be described.

Modify the contents of R_PORT_INF, a relation that manages the shape and state of the ports inside the exchange, and the number of ports for the added remote terminals, that is, the Telnet ID, ENIP Processor ID, and ENIP TCP of the remote terminal connected via ENIP. Domains such as / IP addresses are added.

The signals added to the system are described below.

-RMMP (Remote Man Machine Processor) connection request signal

This signal is transmitted to MMP (Man Machine Subsystem) of MMP when request of remote MMC is used.

-Command execution request signal in RMMP

When the remote MMC user inputs the MMC, it transmits the information to the MMP MMS.

-RMMP disconnect signal

When the remote MMC user inputs "QUIT", the MMS MMS sends the "MMC end signal" and ENIP sends the MMS signal.

-RCRT command execution result response signal

This is the signal sent to ENIP when MMP of MMP outputs message to remote MMC terminal.

-RMMP connection error signal

If a remote MMC user enters a logout message, MMS on the MMP

This signal is used for notification of this.

RMMP disconnect signal

This is a response signal to the "stop reset signal".

-RMMP status check signal

-Timeout signal when RMMP is abnormal

The present invention connects the RS-232C port provided by the exchange to the terminal server using a terminal server that is connected to a LAN network and provides a plurality of RS-232C ports, and connects the terminal server to an operation network. Connection via LAN is possible.

In addition, by implementing a remote terminal can be used remotely over the Ethernet network, the performance is improved by the effective processing of the buffer cache to clean up the congestion of messages in the intermediate system.

As described in detail above, the effects obtained in the present invention will be briefly described as follows.

According to the present invention, all fields of the overall data delivery environment use a high-speed protocol so that the output data generated in the exchange is immediately delivered to the operation center without generating accumulation of output data in the exchange system in real time. By using a separate logical port, the same effect as increasing the number of operating terminal ports is generated, which can solve the shortage of physical ports, enabling stable operation and more than twice as effective data management. Indicates.

Claims (7)

Transmitting a "Telnet Prompt" message from the Network Management System (NMS) to the Ethernet Interrupt Protocol (ENIP); Transmitting an “available port investigation request signal” message from the ENIP to an MMP device status tester (MMDST); Transmitting a "MMC End Signal" message from the MMDST to the ENIP when there is no available port; Transmitting a "power on signal" message from the MMDST to an SH (Shell) block of an MMS (Man Machine Subsystem) when there is an available port; Transmitting a signal for initializing a port from an SH block of the MMS to a menu and command analysis (MC) block; Transmitting a “data reset signal” message from the MC block to the ENIP; And transmitting a message to store a result of the telnet performance from the ENIP to the NMS. Sending a CRT MMC window message from the NMS to the ENIP; Transmitting an “MMC request signal” message from the ENIP to MC_init; Transmitting a "user input signal" message from the MC_init to MC_rmmp; Transmitting a "user output signal" message from the OC (Output Command) of the MMS to the MC_rmmp; Transmitting a “data reset signal” message from the MC_rmmp to the ENIP; And transmitting a message to store a result of the telnet performance from the ENIP to the NMS. Sending a "QUIT" input message from the NMS to the ENIP; Transmitting an “MMC request signal” message from the ENIP to the MC of the MMS; Transmitting a “MMC End Signal” message from the MC of the MMS to the ENIP; Transmitting a "stop request signal" message from the ENIP to an MMDST; Transmitting a "stop reset signal" message from the MMDST to the ENIP; Sending a "telnet prompt" output message from the ENIP to the NMS; Transmitting a “power on signal” message from the MMDST to the SH block of the MMS. Sending a "Use Status Check" message from the ENIP to MC_rcrt; Transmitting a “timeout signal” message from the MC_rcrt to MC_rcrt; And transmitting a " power on signal " message from the MC_rcrt to the MMDST. The method of claim 4, wherein an inservice port is changed to a "Fault Blank" state when the "availability check" message is not received from the MC_rcrt within a specific time. The method of claim 5, wherein the specific time is based on 5 minutes. Transmitting a "Telnet Prompt" message from the Network Management System (NMS) to the Ethernet Interrupt Protocol (ENIP); Transmitting an “available port investigation request signal” message from the ENIP to an MMP device status tester (MMDST); Transmitting a "MMC End Signal" message from the MMDST to the ENIP when there is no available port; Transmitting a "power on signal" message from the MMDST to an SH (Shell) block of an MMS (Man Machine Subsystem) when there is an available port; Transmitting a signal for initializing a port from an SH block of the MMS to a menu and command analysis (MC) block; Transmitting a “data reset signal” message from the MC block to the ENIP; Transmitting a message to store a result of telnet performance from the ENIP to the NMS; Transmitting a CRT MMC window message from the NMS to the ENIP; Transmitting an “MMC request signal” message from the ENIP to MC_init; Transmitting a "user input signal" message from the MC_init to MC_rmmp; Transmitting a "user output signal" message from the OC (Output Command) of the MMS to the MC_rmmp; Transmitting a “data reset signal” message from the MC_rmmp to the ENIP; Transmitting a message to store a result of telnet performance from the ENIP to the NMS; Sending a "QUIT" input message from the NMS to the ENIP; Transmitting an “MMC request signal” message from the ENIP to the MC of the MMS; Transmitting a “MMC End Signal” message from the MC of the MMS to the ENIP; Transmitting a "stop request signal" message from the ENIP to an MMDST; Transmitting a "stop reset signal" message from the MMDST to the ENIP; Sending a "telnet prompt" output message from the ENIP to the NMS; And transmitting a "power on signal" message from the MMDST to the SH block of the MMS.