KR20000061023A - High rank maintenance processor for recovering communication route obstacle in full electronic exchange and operation method thereof - Google Patents

Abstract

PURPOSE: A top level maintenance processor for recovering a communication path error for a full electronic switch and an operation method of the same are provided for continuously providing a service by preventing an error in an alarming process, maintenance function and charge blocking function by overcoming the error in a communication line. CONSTITUTION: An ACTIVE top level maintenance processor(20) sets a switching number to "0"(S1) and outputs a loop back signal through a path(1) and judges whether the loop back of the path(1) is failed(S2). If the loop back of the path(1) is failed(YES), the ACTIVE top level maintenance processor(20) increase the switching number by 1 and switches to the path(20(S3) and outputs a loop back signal through the path(2) and judges whether the loop back of the path(2) is failed(S4).

Description

HIGH RANK MAINTENANCE PROCESSOR FOR RECOVERING COMMUNICATION ROUTE OBSTACLE IN FULL ELECTRONIC EXCHANGE AND OPERATION METHOD THEREOF}

The present invention relates to an upper maintenance processor and a method of operating the same, which provide a program to the processor or collect various information necessary for maintenance in the processor while being connected and communicated through a communication router between the upper / lower processors and the processor of the electronic switchboard. In particular, in the case of communication path failure, to recover the communication path failure in the electronic switchboard to restore the failure state to prevent the failure of the alarm processing, the maintenance function and the charging record, and to continue the service without interruption. It relates to a high-level maintenance processor and its operation method.

In general, the inter-processor communication path in the electronic switchboard is shown in Figure 1, the upper and lower processors 1, 2 (120, 130, 100, 110) through the inter-processor communication router 50 to maintain the upper maintenance processor ( 20, 21) and the alarm collection processor 300, the visual / home alarm device 400 is connected to the alarm collection processor (300).

The upper maintenance processor (20, 21) is divided into ACTIVE / STANDBY upper maintenance processor (20, 21) according to the operation or non-operation state, the upper / lower processor 1, 2 (120, 130, 100, 110) In addition to providing an OS (OPERATING SYSTEM) program and application programs, the router 50 receives various information necessary for system maintenance from the upper and lower processors 1 and 2 (120, 130, 100, and 110). Through the role of sending to the alarm collection processor (300).

The alarm collection processor 300 collects only alarm information through the router 50 in the ACTIVE upper maintenance processor 20 and outputs an alarm signal to the visible / audible alarm device 400 to inform the abnormal state of the system. Do it.

The upper maintenance processors 20 and 21 are connected to nodes 1 and 2 52 and 54 of the interprocessor communication router 50 by paths 1 and 2 (communication cables 1 and 2), as shown in FIG. And a processor control circuit pack 24 connected to the communication control circuit pack 22 through which ports A and B are connected through the bus.

The communication control circuit pack 22 parallelizes serial data input through the nodes 1, 2 (52, 54) to interface the nodes 1, 2 (52, 54) and the processor control circuit pack 24. On the other hand, it converts the parallel data input from the processor control circuit pack 24 into serial data.

The processor control circuit pack 24 supports an OS program and an application program for starting another processor, and receives various information necessary for the maintenance of the system and sends the information to the alarm collection processor 300 through the router 50. This function is to transmit / receive the loopback signal.

3 is a diagram illustrating a method of operating the upper maintenance processor in the case of a path error according to the prior art, where S denotes a step.

First, when a path abnormal interrupt is interrupted to the ACTIVE upper maintenance processor 20 through the router 50, the ACTIVE upper maintenance processor 20 determines whether the node 1 52 is in an abnormal state or whether the cable 1 is detached. (S1), if node 1 (52) is abnormal, it is determined whether node 2 (54) is in an abnormal state (S2).

If the node 2 54 is abnormal in the step S2, the node 2 54 is transferred to the STANDBY higher maintenance processor 21 and terminated. If the node 2 54 is normal, the path is converted to the path 2 (S4). .

If the cable 1 is in the step S1 state in the step S1, the ACTIVE upper maintenance processor 20 determines whether the cable 2 is installed (S5), if the normal state proceeds to the step (S4), while the cable 2 Is in the hernia state, the process proceeds to the step S3.

In addition to the path replacement method of the ACTIVE high-level maintenance processor 20 according to the abnormality of the node and the disconnection of the cable, there is a path replacement method of the ACTIVE high-level maintenance processor 20 by loopback.

In more detail, the communication control circuit pack 22 in the ACTIVE upper maintenance processor 20 transmits a loopback signal once per second to determine whether there is an abnormal path, and the received loopback signal is received for 14 seconds. If it is continuous abnormally, it changes path 1 to path 2, and if the loopback signal received after the path is changed continues to be abnormal, it is switched to the path 1 again.

This continuous loopback failure means that communication to the higher maintenance processors (20, 21) or other higher / lower processors is lost, and system failures are not transmitted to the system operator, and the subscriber's billing information is recorded. It means not.

However, in the case of a loopback failure excluding the cable sheath and node failure, the function of recovering the cable has not been conventionally implemented.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is a communication path failure in an all-electronic exchange that can recover a communication path failure even in a loopback failure except for cable hernia and node failure. To provide a high-level maintenance processor and its operation method for recovering.

In order to achieve the above object, a method of operating a higher maintenance process for repairing a communication path failure in an electronic switch according to a first embodiment of the present invention includes the first step of setting the number of transfers to zero; Outputting a loopback signal through path 1 and determining whether loopback to path 1 fails, and if loopback to path 1 fails in step 2, increase the number of transfers by 1 and simultaneously A third step of switching to 2, a fourth step of outputting a loopback signal through the path 2 and determining whether the loopback to the path 2 fails, and a switching back if the loopback to the path 2 in the fourth step fails. A fifth step of increasing the number of times by 1 and transferring to the path 1; a sixth step of determining whether the number of transfers is a predetermined number or more; and a predetermined number of times of changeover in the sixth step. If less, the process proceeds to the second step, while if the number of times is greater than a certain number of times, the control is transferred to the STANDBY upper maintenance processor, and then an alarm signal is sent to the alarm collection processor through the inter-processor communication router, and the path from the visual / audible alarm device is passed. Characterized in that the seventh step to inform the abnormal state.

In order to achieve the above object, the upper maintenance processor for recovering the communication path failure in the electronic switching system according to the second embodiment of the present invention is connected through a communication router between the upper and lower processors and the alarm collection processor and the processor. In the ACTIVE / STANDBY high level maintenance processor, the ACTIVE / STANDBY high level maintenance processor is characterized in that it is directly connected to the alarm collection processor by a separate cable.

In addition, a method of operating a higher maintenance processor for recovering a communication path failure in an electronic switching system according to the second embodiment having the above configuration includes a first 'step of setting a switching count to 0 and a path 1; Outputting the loopback signal and determining whether the loopback to the path 1 fails after the output of the loopback signal; and if the loopback to the path 1 fails in the second step, the number of transfers is increased by 1 and the transfer to the path 2 is performed. And a fourth 'step of determining whether the loopback to the path 2 fails after outputting the loopback signal through the path 2, and if the loopback to the path 2 in the fourth' step fails, In the fifth step of increasing the number of times and transferring to the path 1 at the same time, the sixth step of determining whether the number of times of change is greater than a certain number of times, and the number of times of switching in the sixth step is less than a certain number of times. On the other hand, if the number of transfer times is greater than a certain number of times, the alarm signal is sent directly to the alarm collection processor to notify the path / abnormal condition of the visual / audible alarm device and transfer control to the STANDBY upper maintenance processor. It is characterized in that the 7 'step.

1 is a diagram showing a communication path between processors of a general electronic switch,

FIG. 2 is a detailed block diagram of the higher maintenance processor of FIG. 1;

3 is a diagram illustrating a method of operating a higher maintenance processor when a path error occurs according to the prior art;

4 is an operation flowchart showing a method of operating a higher maintenance processor for repairing a communication path failure in an electronic switch according to a first embodiment of the present invention;

5 is a diagram illustrating a communication path between processors to which a higher maintenance processor for recovering a communication path failure in an electronic switching system according to a second embodiment of the present invention;

FIG. 6 is an operational flowchart illustrating a method of operating a higher maintenance processor for recovering a communication path failure in an electronic switch system according to a second embodiment of the present invention; FIG.

<Description of the code | symbol about the principal part of drawing>

20: ACTIVE High Maintenance Processor 21: STANDBY High Maintenance Processor

22: communication control circuit pack 24: processor control circuit pack

50: Interprocessor communication router 200: ACTIVE high maintenance processor

210: STANDBY upper maintenance processor 300: alarm collection processor

400: visual / audible alarm device

Hereinafter, a higher maintenance processor and a method of operating the same for recovering a communication path failure in an electronic switch according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The high level maintenance processor of the all-electronic exchanger applied to the first embodiment of the present invention follows the configuration shown in Figs.

4 is an operation flowchart showing a method of operating a higher maintenance processor for recovering a communication path failure in an electronic switching system according to a first embodiment of the present invention, where S represents a step.

First, the ACTIVE upper maintenance processor 20 sets the switching count to 0 (S1 '), outputs a loopback signal through path 1, and determines whether loopback to the path 1 fails (S2'). .

If the loopback to path 1 fails at step S2 '(YES), the ACTIVE upper maintenance processor 20 increases the number of transfers by 1 and at the same time transfers to path 2 (S3'), then passes through path 2. The loopback signal is output to determine whether the loopback to the path 2 fails (S4 ').

If the loopback to path 2 fails at step S4 '(YES), the ACTIVE upper maintenance processor 20 increases the number of transfers by 1 and at the same time transfers to path 1 (S5'), then transfers 4 It is determined whether or not it is abnormal (S6 ').

If the number of transfers is less than 4 in step S6 '(NO), the process proceeds to the step S2', whereas if the number of transfers is 4 or more (YES), the ACTIVE higher maintenance processor 20 is higher than STANDBY. After the control right is passed to the maintenance processor 21 (S7 '), and sends an alarm signal to the alarm collection processor 300 through the interprocessor communication router 50, the alarm collection processor 300 sends an alarm signal corresponding thereto. Visible / audible alarm device 400 outputs a path abnormal status (S8 ').

On the other hand, if the loopback to the path 1 is normally performed in the step (S2 ', S4') (NO), the active upper maintenance processor 20 sets the number of transfers to 0 (S9 '), and ends.

A high level maintenance processor of the electronic switching system according to the second embodiment of the present invention will be described.

FIG. 5 is a diagram illustrating an interprocessor communication path to which a higher maintenance processor for recovering a communication path failure in an electronic switching system according to a second embodiment of the present invention is shown. As shown in FIG. 5, the upper maintenance processor of the electronic switch exchanges path 1 through upper and lower processors 1 and 2 (120, 130, 100 and 110) and the alarm collection processor 300 and the communication router 500 between the processors. , 2 is connected.

In addition, the ACTIVE / STANDBY upper maintenance processor (200, 210) has a separate cable (C), respectively, and is directly connected to the alarm collection processor 300 does not need to go through the inter-processor communication router 500, accordingly Even if paths 1 and 2 of the router 500 fail, an alarm is sent to the alarm collection processor 300 before the path error on the system is transferred from the ACTIVE upper maintenance processor 200 to the STANDBY upper maintenance processor 210. By inputting a signal, the abnormal state of the path may be notified through the visual / audible alarm device 400.

FIG. 6 is an operational flowchart showing a method of operating a higher maintenance processor for recovering a communication path failure in an electronic switch according to a second embodiment of the present invention, where S represents a step.

First, the ACTIVE upper maintenance processor 200 sets the number of transfers to 0 (S1 "), outputs a loopback signal through the path 1, and determines whether the loopback to the path 1 fails (S2"). .

If the loopback to path 1 fails at step S2 "(YES), the ACTIVE upper maintenance processor 200 increases the number of transfers by 1 and transfers to path 2 (S3"), then through path 2 The loopback signal is output to determine whether the loopback to the path 2 fails (S4 ").

If the loopback to path 2 fails in step S4 "(YES), the ACTIVE upper maintenance processor 200 increases the number of transfers by 1 and transfers to path 1 (S5"), and then transfers 4 It is judged whether or not it is abnormal (S6 ").

If the number of transfers is less than 4 (NO) in the step S6 ", the process proceeds to the step S2", while if the number of transfers is 4 or more (YES), the ACTIVE higher maintenance processor 200 collects an alarm. Output the alarm signal directly to the processor 300 to inform the outside of the path abnormal state through the visible / audible alarm device (400) (S7 "), transfer control to the STANDBY higher maintenance processor (210) and end (S8") do.

On the other hand, if the loopback to the path 1 is normally performed in step S2 "and S4" (NO), the active upper maintenance processor 200 sets the number of transfers to 0 (S9 ") and terminates.

As described above, according to the higher maintenance processor for recovering the communication path failure in the electronic switch according to the present invention and its operation method, the communication path failure is identified by using the loopback signal in the upper maintenance processor configured with ACTIVE / STANDBY redundancy. If the communication path failure occurs and the path is changed, and if the path failure is repeated a predetermined number of times, the communication path failure can be recovered by switching to the STANDBY upper maintenance processor, and when the switch to the STANDBY upper processor, the alarm signal is transferred to the alarm pressure processor. The visual and audible alarm system has an excellent effect of notifying the operator of the abnormal path of the system so that the operator can make a disaster recovery effort.

Claims (5)

The first step of setting the number of transfers to 0, A second step of outputting a loopback signal through path 1 and determining whether the loopback to path 1 fails; In the second step, if the loopback to path 1 fails, a third step of switching to path 2 while increasing the number of transfers by 1; A fourth step of outputting the loopback signal through the path 2 and determining whether the loopback to the path 2 fails; A fifth step of switching to path 1 while increasing the number of transfers by 1 if the loopback to path 2 fails in the fourth step; A sixth step of determining whether the number of transfers is a predetermined number or more, In the sixth step, if the number of transfer times is less than the predetermined number of times, the process proceeds to the second stage. If the number of times of transfer is more than the predetermined number of times, the control right is transferred to the STANDBY upper maintenance processor and the alarm is collected through the inter-processor communication router. 7. A method of operating a higher maintenance processor for recovering from a communication path failure in an all-electronic exchange, comprising a seventh step of sending a signal to notify a path / abnormal condition of the visual / audible alarm device. The method of claim 1, In the second and fourth steps, if the loopback to the path 1 or the path 2 is normally performed, an eighth step of setting the number of transfers to 0 is added to maintain the upper level for recovering the communication path failure in the electronic switchboard. How to use the maintenance processor. In the ACTIVE / STANDBY upper maintenance processor connected through an upper, lower processor, and an alarm collection processor and a communication router between the processors, the ACTIVE / STANDBY upper maintenance processor has a separate cable to directly connect with the alarm collection processor. A high level maintenance processor for recovering communication path failures in an electronic switchgear. The first step of setting the number of transfers to 0, A second 'step of outputting the loopback signal through the path 1 and determining whether the loopback to the path 1 fails; If the loopback to the path 1 in the second 'step fails, the third' step of switching to the path 2 at the same time to increase the number of switching by 1, and Outputting the loopback signal through the path 2 and determining whether the loopback to the path 2 fails or not; A fifth 'step of increasing the number of transfers by 1 and switching to path 1 if the loopback to path 2 fails in step 4'; A sixth step of determining whether the number of transfers is a predetermined number or more, In the sixth step, if the number of transfer times is less than a certain number of times, the process proceeds to the second stage. On the other hand, if the number of times of changeover is a predetermined number or more, a warning signal is sent directly to the alarm collection processor to determine a path abnormality state in the visual / audible alarm device. A method of operating a higher maintenance processor for recovering a communication path failure in an electronic switchgear, comprising a seventh step of transferring control to the STANDBY upper maintenance processor. The method of claim 4, wherein When the loopback to the path 1 or the path 2 is normally performed in steps 2 'and 4', an eighth step of setting the number of transfers to 0 is added. To use a higher maintenance processor.