KR100279947B1 - Method for using terminal ports in exchange system - Google Patents

Abstract

The present invention relates to a system and method for connecting a terminal port of an electronic exchange through a workstation using an intra-processor interprocessor communication method, and the workstation receives data of a logical port other than a physical port provided from the electronic exchange, The workstation having a function of communicating with the electronic exchange through a TCP / IP Ethernet network by connecting the remote terminal, the method comprising the steps of:

The method comprising the steps of: setting up a telnet mode in which the operation mode of the remote terminal is in a remote operation mode; displaying a telnet prompt when a telnet connection request requested by a remote terminal is completed; Checking whether there is a line connectable to the electronic exchange when an ID and a password of an arbitration connection are received via the Ethernet of TCP / IP; and if the connection exists, Transmitting the data to the arbitration apparatus and transmitting the data to the remote terminal; and transmitting the message for checking at predetermined time intervals shorter than the time for failing the port of the electronic exchange system in the connected state of the remote terminal A step of transmitting the digital signal, The method of claim 1, further comprising: providing a data bypass function to the workstation when the terminal is connected to the US terminal; performing a port canceling operation between the electronic switchboard and the remote terminal at the time of the cancel command from the remote terminal; And providing a prompt.

Description

{METHOD FOR USING TERMINAL PORTS IN EXCHANGE SYSTEM}

The present invention relates to a method for remotely using a physical local terminal and a logically extended port provided in an exchange, and more particularly, to a method for indirectly connecting an Ethernet network and a system terminal port of a serial port function through an arbitration apparatus To a method of using a terminal port of an electronic exchange.

Typically, a serial port capable of connecting an operating terminal to operate the switching system is provided as in the configuration of FIG. Referring to FIG. 1, which shows a prior art operational terminal connection as a hardware block, an operational terminal port is required both locally and remotely. In the case of a local terminal, the operational terminal is located inside the station where the exchange is located, Direct connection is possible. Ports 0 through 11 indicate this. In this case, connectable terminals include a personal computer general serial terminal printer, a teletype, and the like. On the other hand, in order to control remotely, the terminal must be connected to a remote place from the exchanger, but the direct connection is impossible because the range of the serial port is only a few tens of meters. Even if it is possible to connect to a place where the use range is several tens of kilometers, it is difficult to make a direct connection because seven solid lines are required to be actually connected. Therefore, in order to solve the above-mentioned problem, in the prior art of FIG. 1, the connection between the method using the modems 213 to 216 and the terminal server 217 has been performed.

A method of using the modem is to make a connection with a remote terminal using a commercial modem. That is, this corresponds to the case of ports 12-13 in FIG. The problem here is that the reliability of data transmission due to the instability of the line, such as the modem itself and a dedicated line using a transmission line, is reduced and maintenance is difficult. Meanwhile, in the method using the terminal server, the terminal provided in the exchange is connected to the terminal server 217 using a terminal server that is connected to the LAN network and provides a plurality of RS-232C ports, and the terminal server is connected to the operation network And connecting them through the LAN. Here, since the transmission speed of the port provided in the exchange is usually 9600 bps, there is a problem that high-speed data transmission is impossible.

Since data transmitted between a normal exchange and a remote terminal occurs much more frequently than a general area terminal, if the data can not be transmitted quickly, the exchange accumulates data in the exchange itself. As a result, the exchange transitions to an abnormal state Lt; / RTI > This problem may occur even when the modem is used. In addition, because only the physical port is used, the number of ports is limited, and the lack of ports may occur.

Therefore, as described above, a cumulative problem of output data may occur in the switching system, the status of the switching system is hardly known in real time, and the number of ports of the operating terminal is limited.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an improved method for solving the problems of the prior art.

It is another object of the present invention to provide a method for implementing a remote terminal function that is stable, easy to maintain, and has a fast transmission speed in a system in which a serial port is to be used remotely.

It is yet another object of the present invention to provide an improved method of logically extending the shortage of physical ports by providing a logical terminal port.

Yet another object of the present invention is to provide a method of using a terminal port of an electronic exchanger capable of promptly informing the status of an exchange system by instantly transmitting output data generated without generating a cumulative problem of output data to a remote operation center .

In order to achieve the above-mentioned objects, a method of using a terminal port of an electronic exchanger is characterized in that an arbitration device connected to an Ethernet local area network is used to connect a physical local terminal port or a logically extended port of a remote center and an exchange, .

Other objects and advantages of the present invention will become apparent from the following description taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a hardware block diagram showing a prior art operational terminal connection,

Figure 2 is a hardware block diagram illustrating an operational terminal connection according to an embodiment of the present invention;

FIG. 3 is a block diagram illustrating an example of a remote terminal port implementation of FIG. 2. FIG.

4 is a flow diagram of an access message for terminal port use according to the present invention;

5 is a flowchart of an access message for processing at the abnormal end according to the present invention;

Hereinafter, preferred embodiments of the present invention for the method of using the terminal port of the electronic exchanger will be described in detail.

FIG. 2 shows a hardware block diagram illustrating an operation terminal connection according to an embodiment of the present invention. 2, reference numeral 101 denotes an exchange system for providing a serial port, reference numeral 102 denotes a line for connecting the exchange system 101 and an arbitration apparatus, and an RS-422 Protocol. Reference numerals 103-1 and 103-2 denote an arbitration apparatus as a commercial workstation. In the arbitration apparatus 103, a main function is actually implemented in the embodiment of the present invention, and specifically, a line ultra 1 work station is used. Reference numeral 104 denotes a transmission control protocol / internet protocol (TCP / IP), which is a communication protocol developed by the Department of Defense to connect the arbitration apparatus and the Ethernet network. Reference numeral 105 denotes an Ethernet LAN network using a dedicated or public telephone network. Reference numerals 201, 204, and 211 denote equipment used as a remote terminal, and may be a personal computer, a workstation, or other terminal equipment.

FIG. 3 is a block diagram showing an example of a remote terminal port implementation in FIG. 2. The physical port of the RS-232C provided by the MMS (Man Machine Subsystem) of the MMP (Man Machine Processor) It appears as 16 of 0-15. The remote MMC function is the same as the local terminal, CRT mode. Here, one of the two methods of providing the remote port is to designate and use four ports (Port 12 to Port 15) for the remote terminal (RCRT) among the 16 physical ports. In this case, the four ports allocated for the remote terminal are not available to the local port. Another method is to leave the 16 physical ports intact and add as many logical ports as needed. In this case, the port used for remote use does not affect the local port. The configuration of the former among the methods of providing the remote port is as shown in FIG. In this case, four ports 12 to 15 are allocated for the remote use, and the matching between the arbitration device 103 and the remote center 201 uses the telnet of TCP / IP. On the other hand, the latter method is the same as the method of constructing the above-described electrons except that the physical port is not used and the logical port after the 16th is used. In FIG. 3, the name of the mediation device (MD) is ENIP and the name of the remote center 201 is used as the network management center.

Hereinafter, a connection flow with a terminal port performed remotely will be described. First, the remote terminal mode is set to the VT100 mode. And performs telnet using the IP address, the login ID, and the password provided by the terminal switch. When the telnet connection request requested from the remote is completed, the ENIP connection LOGIN and password are provided in ENIP 103. When the connection is completed, the RCRT screen appears on the monitor. if. If the available port of RCRT is full, an error message is displayed indicating that there is no available port. When RCRT is available, it is connected to ENIP and transmits screen format data of CRT mode to ENIP, and ENIP remotely transmits it. After that, ENIP provides a data bypass function between the remote terminal and MMP's MMS. The number of remote usable windows is limited to four. When the remote user inputs 'QUIT', it performs the port cancellation operation in MMS and notifies ENIP that the remote user's MMC has been terminated. Upon receiving a notification that the MMC has been terminated remotely, ENIP again provides a telnet prompt similar to that of the first time of telnet. Entering the 'EXIT' command at the ENIP prompt will terminate the telnet connection.

FIG. 4 is a flowchart of an access message for use of a terminal port according to the present invention, and FIG. 5 is a flowchart of an access message for processing at an abnormal end according to the present invention. The message flow of the network management center and exchange period is as follows. In the RCRT connection request, when the network management center inputs 'telnet ip-addr' to access ENIP, it requests the login and password of ENIP. If you enter a valid login and password, the RCRT is connected to the corresponding I / O port of the exchange. This corresponds to step 401 of FIG. In step 402, the ENIP transmits the RaStarReqSig to the MMDST (MMP Device Status Tester) block. In step 403, the MMDST checks whether there is an available I / O port. If there is no available port, the ENIP sets the RaMMCEndSig And transmits DevPowerOnSig to SH (shell) block when an available port exists. The SH block sends a signal to initialize the port to the MC (menu and command analysis) block, and the MC block creates MC-main_rcrt, a child process for the remote terminal. The MC block transmits control characters to an RCRT monitor to generate a head, a console, and an input window to configure an environment capable of implementing MMC commands. The control character is transmitted to the ENIP in the Ra block in the MC block in the RaDataResSig message, which corresponds to operation 404. Step 405 indicates a write in the telnet state. The control characters transmitted through ENIP can provide the same window function as the CRT of the exchange body in the VT-100 mode virtual terminal of the remote system. The flow of the message for the RCRT connection request is performed by the above-described process 400. [

Next, the operation of the RCRT MMC will be described with reference to operation 410. In order to process the command like the CRT in the state of step 411 in which the RCRT is connected, the ENIP transmits data to the MC block by loading data in the RaMMCReqSig through step 412. In the MC block, the user input signal is transmitted to the MC-main-rcrt process through the MC-init through the step 413, the actual MMC command is executed, and the result message is transmitted to the RcrtDataResSig (step 415) To the RCRT port. Step 416 is the same as Step 415.

The connection cancellation of the RCRT will be described with reference to FIG. If the 'QUIT' command is input while the RCRT is connected in the network management center of the remote terminal (step 421), ENIP transmits the RaMMCReqSig to the MC block through step 422. If the command is 'QUIT' in the MC block, it is recognized that the RCIT connection is canceled. In step 423, RcrtMMCEndSig is transmitted to ENIP. Upon receiving the RaMMCEndSig, the ENIP transmits RaStopReqsig to the MMDST block to inform the RCRT that the RCRT has been terminated. Upon receipt of the RcrtStopResSig in step 425, the ENIP outputs a telnet prompt to the NMS in step 427 and terminates the connection . In MMDST, DevPowerOff is sent to the SH block of the MMS as the corresponding port is disconnected, so that all child processes of the port are terminated and the port status is changed to 'OOS'.

The abnormal termination processing will be described with reference to FIG. When the network management center abnormally terminates the RCRT, there is a problem that the corresponding I / O port of the exchange maintains the service state continuously. If the RcrtAppStsChk of the 501st step is transmitted to the exchange at the interval of about 4 minutes and 30 seconds from the ENIP, It considers the port to be in use and keeps the in-service state. If the RcrtAppStsChk message is not received in the MC block within 5 minutes, the 5-minute timer times out, and the RcrtTimeOutSig in step 502 changes the in-service port to the 'FBLK' state.

A relation change for changing the shape of a port will be described. The contents of R-PORT-INF, which is the relation for managing the shape and status of the port in the exchange, are modified. For the added remote terminal, domains such as the number of ports, telnet ID of remote terminal connected through ENIP, ENIP processor ID, and ENIP TCP / IP address have been added. The contents of the changed R-PORT-INF are as follows.

#include "domain / D-DEV-NO"

#include "domain / D-PORT-NO"

#include "domain / D-PORT-CLS"

#include "domain / D-PORT-GRP"

#include "domain / D-PORT-STATUS"

#include "domain / D-PORT-COMM-TYPE"

#include "domain / D-TERM-DEV-TYPE"

#include "domain / D-TERM-SVC-TYPE"

#include "domain / D-TERM-POWER-ON"

#include "domain / D-BAUD-RATE"

#include "domain / D-msg"

#include "domain / D-SetupPrt"

#include "domain / D-LGDN-USR-NAME"

#include "domain / D-Telnet-Id" / * ENIP connection Port Telnet Id * /

#include "domain / D-Sor-Id" / * ENIP Processor Id * /

#include "domain / D-Ip-ADDR" / * ENIP TCP / IP Address * /

The signal added to the system will be described. The RCRT connection request signal "RaStarReqSig" is a signal transmitted to the MMS of the MMP when a remote MMC use request occurs. In this case, telnet-id is INT and ip-addr is BIT (32). The list of programs related to this is,

/ * description {

author ""

priority 1

kind "Init"

type " User-Def "

from "cros"

to "MMDST"

explanation "RCRT Telnet Start Request

history "95/12/04 [sablime] Update"} * /

SYN-RaStartReqSig = H'0217;

SIGNAL RaStartReqSig = (DS-RaStartReq);

.

In the RCRT, the command execution request signal "RaMMCReqSig" is a signal that, when a remote MMC user inputs an MMC, transmits the information to the MMS of the MMP. In this case, INT is INT, telnet-id is INT, and str is CHAR (200). The list of programs related to this is,

SYN-RaMMCReqSig = H'021a;

SIGNAL RaMMCReqSig = (ExipCharString);

.

The RCRT connection release request signal "RaStopReqsig" is a signal that the MMS of the MMP transmits RaMMCEndSig and the ENIP transmits to the MMS when the remote MMC user inputs QUIT. In this case, telnet-id is INT. The list of programs related to this is,

SYN-RaStopReqsig = H'021c;

SIGNAL RaStopReqsig = (INT);

.

"RcrtDataResSig", which is the response signal of the RCRT command execution result, is a signal transmitted to the ENIP when the MMS of the MMP outputs a message to the remote MMC terminal. In this case, INT is INT, telnet-id is INT, and str is CHAR (200). The list of programs related to this is,

/ * description {

author ""

priority 0

kind "Normal"

type " User-Def "

from "MC"

to "ENIP"

explanation "Send results for control characters and MMC instructions from MC to ENIP RaStartReqSig, Response to RaMMCReqSig"

history "97/04/07 [sablime] First Set Up"} * /

SYN -RcrtDataResSig = H'eec9;

SIGNAL RcrtDataResSig = (ExipCharString);

.

RCRT connection error signal "RcrtMMCEndSig" is a signal used when a remote MMC user inputs a LOGOUT message and MMP MMS notifies ENIP of the message. In this case telnet-id is INT and sts is INT. The list of programs related to this is,

/ * description {

author ""

priority 0

kind "Normal"

type " User-Def "

from "MC"

to "ENIP"

explanation "Indicates that RCRT has been terminated from MC to ENIP. Response to RaStartReqSig"

history "97/04/07 [sablime] First Set Up"} * /

SYN -RcrtMMCEndSig = H'eeca;

SIGNAL RcrtMMCEndSig = (MMCEndData);

.

The RCRT connection release signal "RcrtStopResSig" is a response signal to RaStopResSig. In this case, telnet-id is INT. The list of programs related to this is,

/ * description {

author ""

priority 0

kind "Normal"

type " User-Def "

from "MC"

to "ENIP"

explanation "Response to IPC RaStopReqSig indicating that RCRT has been logged out from MC to ENIP"

history "97/04/07 [sablime] First Set Up"} * /

SYN -RcrtStopResSig = H'eecb;

SIGNAL RcrtStopResSig = (INT);

.

The program list related to the RCRT status check signal " RcrtAppStsChk &

/ * description {

author ""

priority 0

kind "Normal"

type " User-Def "

from "ENIP"

to "MC"

explanation "Check process status from ENIP to MC sig"

history "97/04/07 [sablime] First Set Up"} * /

SYN -RcrtAppStsChk = H'eecd;

SIGNAL RcrtAppStsChk;

≪ / RTI >

The program list related to the timeout signal " RcrtTimeOutSig " when the RCRT is in an abnormal state,

/ * description {

author ""

priority 0

kind ""

type "Normal"

from "MC"

to "MC"

explanation "Time-Out for RCRT instruction"

history "97/04/09 [sablime] First Set Up"} * /

SYN -RcrtTimeOutSig = H'eecc;

SIGNAL RcrtTimeOutSig;

.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities.

According to the present invention, in providing a remote terminal, first, all fields of the entire data delivery environment use a high-speed protocol, so that the cumulative problem of output data is not generated in the switching system. Second, Third, by using a separate logical port, it is possible to solve the shortage of the physical port due to the same effect as increasing the number of ports of the operational terminal. It is possible to perform stable operation.

Claims (1)

The workstation connects to the terminal port of the electronic exchange through a workstation using a communication method between the internal processors of the exchange. The workstation receives data of a logical port other than the physical port provided from the electronic exchange and transmits the data to a remote terminal Wherein the workstation has a function of connecting to a remote terminal through an Ethernet network of TCP / IP and performing communication with the electronic exchange, the method comprising the steps of: Setting up a telnet mode in which the operation mode of the remote terminal is a remote operation mode; Displaying a telnet prompt when the telnet mode is performed and the request for telnet connection requested by the remote terminal is completed; Checking whether there is a line connectable to the electronic exchange when an ID and a password of an arbitration connection are received through the Ethernet of the TCP / IP to the workstation; Transmitting the screen format data of the screen mode to the arbitration device and transmitting the screen format data to the remote terminal when there is a connectable line as a result of the examination, The workstation sending a message for a check in a predetermined time unit shorter than a time for failing to block a port of the electronic exchange system in a connected state of the remote terminal, Providing a data bypass function when the workstation is connected between the electronic exchange and the remote terminal; And performing a port cancellation operation between the electronic exchange and the remote terminal upon a cancellation command from the remote terminal, and providing a telnet prompt in the same manner as in the initial state of the telnet.