KR20000001566A - Line test method of isdn(integrated services digital network) in private exchanger - Google Patents

Abstract

PURPOSE: A line test method of ISDN(integrated services digital network) in private exchanger is provided to conveniently test the line of the ISDN and systematically maintain instrument. CONSTITUTION: The line test method of ISDN(integrated services digital network) comprises: a step controlling an ISDN connecting unit if the order to test the ISDN is received from a computer, thereby transmitting setup signal to all lines to be tested and make ON a timer; a step storing lines which the setup signals are received for the time established in the timer into an error data base; a step transmitting setup releasing signals into all lines transmitting the setup signals, thereby releasing line setup state; and a step cut offing lines which the setup signals are received and outputting the result messages according to the cutoff lines to the computer.

Description

Line Test Method of Integrated Telecommunication Network Connection in Private Switching System

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit test method in a private exchange, and more particularly, to a circuit test method of a connection of an integrated services digital network (hereinafter referred to as ISDN).

Private exchanges have been commonly used in connection with public switched telephone networks (PSTNs), but the demand for telecommunications and the increase in the amount of information transmitted and received during telecommunications have led them to gradually connect with ISDN to receive more services. In response to this demand, private exchanges have developed and built ISDN connections that can connect to ISDN. The circuit test of the ISDN connection developed in this way required the operator to directly block the ISDN connection of the private exchange and manually test the circuit. Therefore, it was inconvenient when testing the ISDN connection line because it could not be performed through the operator's computer in the remote place such as the circuit test of the public network, and it did not have a consistent system for the management of the equipment.

It is therefore an object of the present invention to provide a method for performing a circuit test of a private exchange ISDN connection at a remote location.

Another object of the present invention is to provide a method for performing a test of an ISDN connection line by itself in a private exchange.

1 is a view showing a block configuration of an operator computer to which a private switch to which the present invention is applied is connected;

2 is a signal flow diagram during ISDN line test at the request of an operator as an embodiment of the present invention;

3 is a signal flow diagram during ISDN line testing performed regularly in a private exchange as another embodiment of the present invention.

SUMMARY OF THE INVENTION The present invention according to the first aspect for achieving the above objects is a non-periodic circuit test method of a general information communication network connection of a private exchange. In the aperiodic circuit test process, when a comprehensive IT network circuit test request signal is received from an operator computer to a controller of a private switch, the integrated IT network connection unit is controlled to send a setup signal to all the circuits for which a test is required, and then to test the circuit. And turning on the timer, storing a line in which no setup response signal has been received for the time set in the timer in the error database, and disconnecting the line, and releasing the setup to all the lines to which the setup signal is sent. Outputting a signal to cancel the state of the line being caused; converting the result according to the line for which the setup response signal is not received into a message and outputting the result to an operator computer.

The present invention according to the second aspect for achieving the above objects is a periodic line test method of the integrated network connection in the private exchange. In the periodic circuit test, the operator first sets the circuit test time and the circuit test object. Transmitting a setup signal to the test target line to the integrated information and communication network connection unit when the line test setting time is reached, turning on a line and turning on a timer; and receiving the setup until the time set in the timer has elapsed. Storing the state of the line in the error database according to the response signal; converting the result of the line not receiving the setup response signal into a message and outputting the message to the printer; And transmitting the setup release signal to release the scissors line.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In addition, the same reference numerals are used to designate the same reference numerals in the accompanying drawings, although the same reference numerals are used.

1 is a block diagram of a private switch to which the present invention is applied and a configuration of an operator computer connected thereto. Reference numeral 100 is a functional block diagram of a private exchange, and 200 illustrates an operator computer located at a remote location. The operator computer 200 incorporates a program for performing maintenance of the private exchange. Therefore, when the operator inputs a command according to maintenance, the operator outputs the command to the private exchange 100, and displays data received from the private exchange 100 as an image on a monitor. In particular, when the operator inputs an ISDN line test command, the operator computer 200 outputs the input command to the private switch 100, and converts the test result received from the private switch 100 into an image on a monitor.

Next, the configuration and operation of the private exchange will be described. The control unit 111 controls the overall operation of the private exchange 100, and in particular, performs a test of the line when a test request of the ISDN connection from the operator computer 200 in accordance with the present invention. The control unit 111 includes tasks required for circuit test of the ISDN access unit according to the present invention. The tasks are described as a fault handler task for analyzing a test request received from the operator computer 200, and a fault detection task for performing a control of a test according to the analyzed test request. It is composed. The analog subscriber unit 112 and the digital subscriber unit 113 are connected to a plurality of analog extension subscribers and digital extension subscribers, and detect the event when a hook on / off of the extension subscriber occurs. The tone generator 114 generates a dial tone or busy tone under the control of the controller 111, and the ring generator 115 generates a ring signal and outputs the ring signal to the telephone of the corresponding subscriber. The operator connection unit 116 converts data transmitted and received between the control unit 111 and the operator computer 200 to be recognized by the operator computer 200 or the control unit 111. The memory unit 117 stores a program necessary for the control of the controller 111 and also temporarily stores data generated during the control. The tone detector 118 detects a dual tone multi-frequency (DTMF) received under the control of the controller 111, and transmits the detected tone data to the controller 111. Accordingly, a call between extension subscribers or a call received from outside may be connected to an extension subscriber. When the extension subscriber cannot receive a call, the voice mailbox unit 119 transfers the call to store the voice message.

The ISDN connection 120 is called PRI (Primary Rate Interface), which uses 30B + D lines, depending on the number of available circuits, and BRI (Basic Rate Interface), which uses 2B + D lines. It is divided into 122). It may be equipped with only PRI board 121 million or BRI board 122 when mounted in a private exchange, it may be provided with both types of board. In addition, the ISDN access unit 120 outputs, to the controller 111, information of a call received in connection with another private exchange or in connection with an ISDN trunk line exchange. In addition, the PRI board 121 and the BRI board 122 perform a test of the line under the control of the control unit 111. The public network connection unit 131 is connected to the public network (PSTN) to transmit and receive voice data, and when the call is received from the public network, outputs the incoming call information to the controller 111. The switch unit 132 performs a switching operation under the control of the control unit 111.

2 is a signal flow diagram during ISDN line test at the request of an operator as an embodiment of the present invention. Hereinafter, the aperiodic circuit test procedure performed at the request of the operator will be described in detail with reference to FIGS. 1 and 2. The operator computer 200 will be described assuming that the program for the circuit test of the private switch 100 is running. When the operator computer 200 selects a test requiring a test from among the ISDN connection line by the operator, the ISDN line test request signal REQ_TRK_SZR is transmitted to the control unit 111 through the operator connection unit 116 in step 301. Then, the failure management task 10 of the control unit 111 analyzes the received signal and transmits the received signal to the failure detection task 20 in step 303. The fault detection task 20 outputs the line test command signal TEST_TRK_SZR to the PRI board 121 or the BRI board 122 to the test target line according to the analysis in step 305. Then, the board receiving the line test command signal TEST_TRK_SZR outputs the setup signal SETUP to the power station through the line for which the test is requested in step 307.

In addition, the fault detection task 20 outputs the line test command signal TEST_TRK_SZR in step 309 and turns on a timer set for a predetermined time and checks whether a setup response signal SETUP_ACK is received. At this time, when the state of the line is normal, the setup response signal SETUP_ACK is received from the power station. In case of abnormality, the setup response signal SETUP_ACK is not received even if the set time elapses. In other words, the setup signal is transmitted to the test target line among the circuits of the PRI board 121 and the BRI board 122, and the line is caesared. Therefore, the setup signal SETUP_ACK is received from the power station on the circuit where there is no error, but the setup response signal SETUP_ACK is received from the power station. However, the setup signal SETUP_ACK is received from the power station on the circuit where the error occurs on the circuit. It doesn't work. Accordingly, the PRI board 121 and the BRI board 122 output the line test response signal TEST_TRK_SZR_ACK received during the time set by the timer in step 311 to the fault detection task 20. The ISDN access unit 120 proceeds to step 313 to output the setup release signal RELEASE to all the lines that have transmitted the setup signal. Alternatively, in step 313, only the line on which the setup response signal is received may output the setup release signal RELEASE. In this case, the release response signal RELEASE COMPLETE is received only on the line in which no abnormality occurs in the line in step 315.

The fault detection task 20 detects a line in which the setup response signal SETUP_ACK has not been received and stores the error in the error database among the lines which have been tested according to the received line test response signal TEST_TRK_SZR_ACK. Here, the error database refers to a memory table in which data on a circuit having an error on the ISDN circuit is stored through the above process. In addition, the control unit 111 prevents the setup response signal SETUP_ACK from being connected to a line not receiving the call when a call is generated from an extension subscriber by blocking a line not receiving the setup response signal SETUP_ACK among the lines that transmit the setup signal SETUP. In operation 317, the fault detection task 20 transmits the response result signal TEST_TRK_ACK to the fault management task 10 according to the data of the line on which the line test response signal TEST_TRK_SZR_ACK is received. The failure management task 10 generates data to be transmitted to the operator computer 200 according to the response result signal TEST_TRK_ACK received from the failure detection task 20 in step 319 and outputs a result message MAP_OUT. Then, a result message is output from the control unit 111 and output to the operator computer 200 through the operator connecting unit 116. The operator computer 200 converts the result of the test into an image on the monitor and displays the result according to the received result message MAP_OUT.

3 is a signal flow diagram during ISDN line test performed regularly in a private exchange as another embodiment of the present invention. Hereinafter, with reference to Figure 3 will be described in detail the process of the ISDN line test that is periodically executed at the time set in the private exchange. Before describing FIG. 3, FIG. 3 is applied to the following cases. In the first case, the fault detection task 20 performs the inspection of the line at a regular time set by the operator. In the second case, the line in which the error is detected through the process of FIG. 2 is tested in a predetermined time unit. In the second case, the test is carried out for a predetermined time unit on the line where an error has occurred due to the inspection of the first case.

Next, the process according to the process of FIG. 3 will be described. The fault detection task 20 proceeds to step 351 when the error checking time corresponding to any one of the three cases is output, outputs a line test command signal TEST_TRK_SZR to the test target line, and turns on the timer. Then, the ISDN access unit 120 transmits the setup signal SETUP to the line set by the operator in the first case according to the circuit test command signal TEST_TRK_SZR in step 353, and the setup signal SETUP to the line where the error is detected in the second and third cases. Send. The ISDN access unit 120 receives a setup response signal SETUP_ACK from the power station in step 357. The circuit test response signal TEST_TRK_SZR_ACK is output to the fault detection task 20 according to the received setup response signal SETUP_ACK. The fault detection task 20 stores, in step 357, data of a line on which the setup response signal SETUP_ACK is not received according to the circuit test response signal TEST_TRK_SZR_ACK received in step 357 in the error database. In addition, the ISDN access unit 120 outputs the setup release signal RELEASE to all the lines where the test was performed in step 359. At this time, the release response signal RELEASE COMPLETE of step 361 is received through the line on which no abnormality occurs. The fault detection task 20 transmits a response result signal RESULT_OUT to the fault management task 10 according to the received line test response signal TEST_TRK_SZR_ACK. The failure management task 10 converts the details of the line where the error occurred in step 365 to a message and outputs the message to the printer, and the printer receives and prints the message.

As described above, there is an advantage in that the private exchange can test the circuit through the operator computer regardless of the type of ISDN connection. In addition, it is possible to periodically check the circuit at a set time. The circuit is disconnected when an abnormality occurs in the test result line, and the circuit is inspected by a predetermined time unit, and when it is determined that the abnormality has occurred in the test result of the circuit, the circuit is interrupted and the circuit is restored. This can be done by printing or printing through the operator's computer so that the operator can easily see the status of the line.

Claims (4)

In the aperiodic circuit test method of the integrated IT network connection in a private exchange, Controlling the integrated telecommunication network connection unit to transmit a setup signal to all the lines for which the test is required by receiving an integrated telecommunication network test request signal from an operator computer, caesating the line and turning on a timer; Storing a line in which no setup response signal has been received for the time set in the timer in an error database; Outputting a setup release signal to all the lines which have transmitted the setup signal to cancel the state in which the line is set up; And disconnecting a line from which the setup response signal is not received and outputting a result message according to the blocked line to an operator computer. The method of claim 1, Transmitting a setup signal for a line stored in the error database at predetermined intervals and turning on the timer; Changing the state of the circuit stored in the error database according to the setup response signal received until the time set in the timer elapses; Stopping the blocking of the line on which the setup response signal was received; And converting the result of the line not receiving the setup response signal into a message and outputting the message to a printer. In the periodic line test method of the integrated network connection in a private exchange, Transmitting a set-up signal to the circuit on which the test is set at a specific time set by the operator, scissoring the circuit and turning on a timer; Storing the state of the line in the error database according to the setup response signal received until the time set in the timer elapses; Transmitting a setup release signal to all lines that have transmitted the setup signal to release the caesar state of the line; And converting the result of the line not receiving the setup response signal into a message and outputting the message to a printer. The method of claim 3, Transmitting a setup signal at predetermined intervals for the error line stored in the error database and turning on the timer; Changing the data stored in the error database according to the setup response signal received until the time set in the timer elapses and stopping the blocking of the line; And converting the result of the line not receiving the setup response signal into a message and outputting the message to a printer.