KR200184057Y1 - A duplex alarm apparatus using load-shared system in a ring generator of a switching system - Google Patents

Abstract

The present invention relates to a redundancy alarm device using a load-sharing system in a ring board of an exchange, and in particular, to display an output on a ring board of a load or load-divided counterpart in a self. The present invention relates to a redundancy alarm device of a ring board in which a load division scheme is applied in an exchange that is implemented to be suitable and exhibits an abnormal state of an analog subscriber board and an opponent ring board in a self.

The conventional ring board redundancy alarm device has a problem in that if an error occurs while supplying a ring signal from the ring board, the ring signal cannot be continuously supplied to the analog subscriber while the alarm is transmitted to the other ring board through the ring back board.

As described above, the present invention can determine the current ring board abnormality and short-circuit state by the LED alarm display of the ring board front panel part, and if the ring board on the active side does not operate due to an error, the other party ring As the other ring board supplies ring signals not only to analog subscribers that supply ring signals from the active ring boards but also to analog subscribers who supply ring signals from their own ring boards, the ring boards supply the ring signals. There is an advantage to stabilize the system by coping faster.

Description

A Duplex alarm apparatus using Load-Shared System in a Ring Generator of a Switching System}

The present invention relates to a redundancy alarm device using a load-sharing system in a ring board of an exchange, and in particular, to display an output on a ring board of a load or load-divided counterpart in a self. The present invention relates to a redundancy alarm device of a ring board in which a load division scheme is applied in an exchange that is implemented to be suitable and exhibits an abnormal state of an analog subscriber board and an opponent ring board in a self.

Conventionally, when a large amount of processing is required at an exchange, if the processing is not possible with a single computer, a ring signal of a redundant ring board that uses a load splitting method that distributes loads by distributing data by processing contents or source by connecting multiple computers is ringed. The back board delivered the cable and the ring back board supplied the ring to the analog subscriber via an analog back board (not shown) mounted with an analog subscriber board (not shown).

The ring board that supplies the ring is a board that supplies a 20 Hz ring signal and a zero-crossing signal to the analog subscriber interface, and receives a test subscriber line in a mobile switching center (MSC) system. It is realized within ASS (Access Switching Subsystem) and is configured to supply 20Hz call signal current to analog subscriber interface and TEC (Test Equipment Control) in rack unit of 2048 subscribers. It also operates in Load Share System and Active or Standby mode to increase the reliability of the ring board, and generates the alarm signal and transmits it to TEC in case of failure in the ring board. In addition, the ring board can select the power redundancy scheme and has a circuit protection function when the input voltage is applied in the reverse direction or when the overcurrent is drawn.

As shown in FIG. 1, the redundant alarm device applying the load division method in the ring board as described above includes a first ring board 11, a second ring board 12, a ring back board 13, It consists of a load 14 and panel parts 15 and 16.

The first ring board 11 and the second ring board 12 are mounted on the ring back board 13, respectively, and are connected to the ring back board 13 through cables, respectively, and have no function or ring board 11, ( 12) LED indicates whether or not overload.

The ring back board 13 applies a ring signal to the load 14, that is, the analog subscriber, through a cable connected with the first ring board 11 and the second ring board 12, and the panel units 15 and 16. Is installed in each ring board 11 and 12, and the power state, the function failure (hereinafter referred to as 'F.F') state, and the overload (hereinafter, 'O') L ') state and LEDs (not shown) indicating the active / standby state are provided.

In the ring board of the conventional exchanger having such a configuration, the operation of the redundant alarm device applying the load division method is as follows.

The first ring board 11 and the second ring board 12 are mounted on the ring back board 13, and when one is active, the other is in a standby state. In other words, if the first ring board 11 is in an active state, the second ring board 12 is in a standby state. At this time, a ring signal is applied to the ring backboard 13 through a cable connected to the ring backboard 13 from the first ring board 11 in an active state, and the ring backboard 13 loads the load 14 through the cable, that is, Supply ring signal to analog subscriber.

On the other hand, if an abnormality occurs in the ring board operating in an active state, an abnormal alarm is transmitted to the ring back board 13 through a cable, and at the same time, an LED is displayed on the panel parts 15 and 16 of the corresponding ring board. The back board 13 transmits an abnormal alarm of the ring board in the active state to the ring board in the standby state. When an abnormal alarm is input, the ring board in the standby state is switched to the active state and supplies a ring signal to the analog subscriber which is the load 14 instead of the ring board in which the error occurs.

In other words, if an abnormality occurs while feeding the ring signal from the first ring board 11 in the active state through the ring back board 13 to the analog subscriber which is the load 14, an alarm indicating whether or not the ring back board 13 ) And at the same time whether or not abnormality is displayed through the LEDs installed in the panel portion 15 of the first ring board 11, thereby alarming the second ring board 12 in the standby state on the ring back board 13 Be notified. Accordingly, the second ring board 12 in the standby state is switched to the active state to transmit the ring signal through the cable connected to the ring back board 13, and the ring back board 13 is one load 14. That is, it supplies ring signal to analog subscriber.

In this way, the redundant alarm device of the conventional ring board transmits an alarm to the other ring board through the ring back board when an abnormality occurs during the supply of the ring signal from the ring board. There is a problem that can not be continuously supplied to.

The present invention has been made to solve the above problems, and its purpose is to determine whether an error occurs in one ring board and to directly supply the analog subscriber with the current ring signal. In addition, the present invention provides a redundant alarm device using a load division scheme in a ring board of an exchange that provides a ring signal to an analog subscriber in place of a ring board in which an error occurs.

1 is a block diagram showing a redundant alarm device of the ring board according to the prior art.

Figure 2 is a block diagram showing a redundancy alarm device of the ring board according to the present invention.

Explanation of symbols on the main parts of the drawings

11, 21: 1st ring board 12, 22: 2nd ring board

13: ring backboard 14: load

23: first load 24: second load

The present invention for achieving the above object, if an abnormality occurs in the self-provided alarm directly through the status signal line, the output line is cut off, and if the other ring is provided with an alarm that an abnormality has occurred in the other ring board, A first ring board for supplying ring signals to analog subscribers, which supply ring signals in place of the boards, and at the same time, supply ring signals on their own;

When an alarm is input from the first ring board, a ring signal is supplied to the analog subscriber who provided the ring signal in place of the first ring board to the analog subscriber that provided the ring signal, and the ring is also supplied to the analog subscriber that provided the ring signal in itself. It is characterized in that it comprises a second ring board for supplying a signal, and if an error occurs in itself, the alarm is transmitted to the first ring board through a state signal line and the output line is blocked.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described.

As shown in FIG. 2, the redundant alarm device of the present invention includes a first ring board 21, a second ring board 22, a first load 27, a second load 28, and a panel unit ( 25), (26).

The first ring board 21 is mounted on a ring back board (not shown), and is connected to a -48V power supply and a ground (GND), and a state signal line is connected to determine whether the second ring board 22 is abnormal. The second ring board 22 is mounted on the ring back board, is connected to the -48V power supply and the ground, and the status signal line is connected to determine whether the first ring board 21 is abnormal. 2 loads 27 and 28 represent analog subscribers.

The operation of the redundancy alarm device of the ring board having the configuration as described above is as follows.

The redundant ring boards 21 and 22 applying the load division method supply ring signals to the respective loads. At this time, when one of the ring boards is switched off or an abnormal phenomenon occurs, the other ring board replaces the ring board in which the abnormal phenomenon occurs, and a ring signal is supplied to all of the loads 27 and 28 representing analog subscribers, and the ring Indicate abnormal state through LED of board panel part.

In other words, if the first ring board 21 is active, the first ring board 21 supplies a ring signal to the first load 27, and the second ring board 22 is in a standby state. have. In addition, if the second ring board 22 is in an active state, the second ring board 22 supplies a ring signal to the second load 28, and the first ring board 21 is in a standby state.

As described above, when the first ring board 21 is in an active state and the first ring board 21 is powered down or is not operated due to a failure of the device, the down phenomenon occurs. When generated, the first ring board 21 indicates the cause of the abnormal phenomenon through the LED of the panel portion 25, the combination of the LED of the panel portion 25 can determine the cause of the abnormal phenomenon. In addition, the second ring board 22 receives an abnormal alarm from the first ring board 21 through the status signal line directly without passing through the ring back board, and blocks the output of the first ring board 21. Accordingly, the second ring board 22 transitions from the standby state to the active state to supply the ring signal to the first load 27 on behalf of the first ring board 21 as well as to continue the ring signal to the second load 28. To supply. That is, the second ring board 22 supplies ring signals to the entire loads 27 and 28, that is, the first load 27 and the second load 28.

Subsequently, when the cause of the output abnormality of the first ring board 21 is removed to operate normally, the first ring board 21 supplies a ring signal to the first load 27, and the second ring board 22 waits. Switch to the state.

On the other hand, when an abnormal phenomenon occurs while the second ring board 22 is in the active state, the first ring board 21 which has received the abnormal alarm through the status signal line switches from the standby state to the active state, and the first ring board Cut off the output of (21). In addition, the cause of the abnormality is indicated through the LEDs in the panel portion 26 of the second ring board 22, and the second ring board is supplied to the second load 28 that has supplied the ring signal from the second ring board 22. In place of (22), the first ring board 21 supplies the ring signal, and also supplies the ring signal to the first load 27.

That is, when one ring board is switched off or an abnormality occurs, all analog subscribers, including analog subscribers, which have supplied ring signals from the ring board where the other ring board has failed in place of the failed ring board. The ring signal can be supplied.

Description of the LED which shows the cause of the abnormality of the above-mentioned ring board is as showing in Table 1.

LED Color indicator Explanation Power status green Main software on status, output display F.F Red Ring output function error I.F Red Ring output signal short circuit

Table 1 shows the ring board status, that is, the cause of the error.

Ring output status LED indication Alarm status power Malfunction paragraph Main software - ON ON F.F Normal operating state ON - - - Abnormal state due to voltage ON ON - F.F Output short-circuit state of the first ring output line ON - ON I.F Overload condition ON ON ON O.L

In addition, the LEDs indicate which load the ring signal is applied to by the other ring board due to an abnormal cause of the ring board, as shown in Table 3 below.

First ring board 2nd ring board condition First ring board 2nd ring board R1 R2 R3 R4 F.F I.F F.F I.F O X O X Steady state Low Low Low Low O O X X 2nd ring board: F Low Low High Low / High X X O O 1st ring board: F High Low / High Low Low X X O X First load: S Low High Low Low X X O X First load: S First ring board: F High High Low Low X O X X First load: S Second ring board: F Low High High Low / High O X X X Second load: S Low Low Low High O X X X Second load: S Second ring board: F Low Low High High X X X O Second load: S First ring board: F High Low / High Low High X X X X 1st and 2nd ring board: F High Low / High High Low / High X X X X First and second load: S Low High Low High X X X X Above the first and second ring board High High High High

In Table 3, the portion indicated by 'O' in the first ring board 21 and the second ring board 22 indicates a ring signal to each load, and the portion indicated by 'X' does not supply the ring signal to the load. Indicates no. In addition, the part shown as "Low" shows the part with low potential, ie, lighting in LED, and the part shown as "High" shows the part with high potential, ie, the light out in LED. In addition, the part shown as "Low / High" shows blinking of an LED. The load state 'S' means short, and the board state 'F' means 'Fail'.

As described above, the present invention can determine the current ring board abnormality and short-circuit state by the LED alarm display of the ring board front panel part, and if the ring board on the active side does not operate due to an error, the other party ring As the other ring board supplies ring signals not only to analog subscribers that supply ring signals from the active ring boards but also to analog subscribers who supply ring signals from their own ring boards, the ring boards supply the ring signals. There is an advantage to stabilize the system by coping faster.

Claims (2)

If an abnormality occurs on its own, an alarm is provided directly through the status signal line, the output line is cut off, and if an alarm is received on the other ring board, an alarm signal is supplied on behalf of the other ring board. A first ring board for supplying a ring signal to an analog subscriber that has been supplying a ring signal in the first embodiment; When an alarm is input from the first ring board, a ring signal is supplied to the analog subscriber who provided the ring signal in place of the first ring board to the analog subscriber that provided the ring signal, and the ring is also supplied to the analog subscriber that provided the ring signal in itself. In the ring board of the exchanger, the second board includes a second ring board for supplying a signal but transmitting an alarm to the first ring board through a status signal line and interrupting an output line when an abnormality occurs. Redundancy alarm device. The method of claim 1, wherein the first ring board and the second ring board, If an error occurs in each ring board, a redundancy alarm device using a load division method in a ring board of an exchanger, wherein the cause of the error is displayed through an LED of a panel unit installed in each ring board.