KR920001000B1 - Remote warning method in switching center - Google Patents

Abstract

The method automatically generates warning sounds to a remote maintenance center when a disorder occurs in a switching system. The method includes the steps of: initializing a scanning feature (1A); comparing the magnitudes of the number of detections with the number of kinds of detections (2A); incrementing the number of detections by 1 upon finding the former smaller than or the same as the latter (3A, 11A); setting a MODEM setting flag (4A-8A); sending a disorder information to a computer terminal upon finding a disorder flag (9A-11A); and terminating the operation upon finding no disorder flag, and putting the system to a standby condition.

Description

Remote alarm function method of exchange

1 is a system network diagram for carrying out the present invention.

2 is a state diagram for recording a fault state according to the present invention.

3 is a flow chart of the message transmission function of FIG. 2 in accordance with the present invention.

4 is a structural diagram of a fault detection function and a storage area of the present invention.

5 is a structural diagram of an installation telephone number database of the present invention.

* Explanation of symbols for the main parts of the drawings

10: local converter 20: M & A terminal

30: public telephone communication network 40: remote private exchange

50: remote maintenance center computer and terminal 60: modem

The present invention relates to a remote alarm function method of an exchange, and more particularly, to a method for automatically informing a remote maintenance center of detected fault information when a fault is detected.

In general, an exchanger is provided with an M & A terminal (Maintenance and Administration terminal) for checking and maintaining the system state of the exchange. The M & A terminal installed in the exchange facilitates maintenance of the exchange by means of Man Machine Communication (MMC) between the exchange and the system operator.

Typically, the M & A terminal is used while being connected to a serial input / output port of a central processing module (CPM) for controlling overall operation of the exchange.

On the other hand, when the exchanges are installed and operated in several places, as described above, if the system status of the exchanges is checked and maintained using the M & A terminal installed on the exchanges, a maintenance specialist for each exchange site is installed. The fixed costs are increased according to the operator because smooth operation and maintenance of the exchange at each site (hereinafter referred to as a local exchange) is required.

As a result, a single remote maintenance center at a remote site typically performs status checks and maintenance on multiple local exchanges.

In order to check the status of each local exchange at the remote maintenance center, the local modem is connected to the serial input / output port of the internal CPM at each local exchange, and the connected local modem is wired to one port of the subscriber line card (SLC). Connect as (wire). Then, when the remote maintenance center accesses the port of the SLC to which the local modem of each local exchange is connected, the remote maintenance center can perform a function performed by the M & A terminal.

On the other hand, in the exchanges, failures can occur in ROM, RAM, SLC, etc. If a failure occurs, it will notify the local alarm system or poll each site in the remote maintenance center to fail. I figured out.

At this time, if the remote maintenance center polls the failed local exchange and the failure time does not coincide, no action can be taken for a long time despite the failure. As a result, there must be a specialized maintenance operator at each site to enable smooth operation and maintenance of the exchange system. Therefore, due to the increase in fixed costs, it cannot be processed quickly when a failure occurs.

Therefore, an object of the present invention is to provide a remote alarm function method of the exchange that can maintain the exchange of more sites by quickly knowing the failure state occurring at each site in the remote maintenance center even if the exchange is installed in several places.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of a system network for carrying out the present invention, wherein a CPM 1 for overall operation control of an exchange, an SLC 2 for subscriber line connection, and a TLC for trunk line (CO) connection are shown. M & A terminal connected to a local exchange 10 consisting of a line card 3, a local modem 4, and a CPM 1 of the local exchange 10 to perform an MMC with the local exchange 10. 20, a public telephone communication network (hereinafter referred to as PSTN) 30 connected to the TLC 3 of the local exchange 10 via a CO line, and the PSTN 30, A remote private exchange 40 providing a computer, a computer and a terminal (hereinafter referred to as RT) 50 of a remote maintenance center performing a function of the M & A terminal 20 remotely, and the remote private exchange ( And a modem 60 connected between the RT 50 and the RT 50 to demodulate and demodulate the input / output signals of the RT 50.

2 is a state diagram for recording a fault condition according to the present invention, wherein F1-Fn (where n is the number of fault detection types) is a fault detection function of the CPM 1, which incorporates various fault detection programs, and ALM BUF Is an alarm buffer of the CPM 1, which is a buffer function for temporarily storing information on a failure detected by the fault detection functions F1 to Fn, and MSG TX is a message transmission function of the CPM 1 As a transmission block, information is taken out from the alarm buffer ALM BUF, processed, processed, and then transmitted to the RT 50.

3 is a flowchart of the message transmission function MSG TX of FIG. 2 according to the present invention, in which the CPM 1 is the first alarm buffer of the alarm buffer ALM BUF corresponding to each failure detection function F1-Fn. It sequentially checks from (ALM BUF1) to the nth alarm buffer (ALM BUFn), takes out and processes the fault information when it is stored, and then forms a local number and transmits it to the RT (50).

4 is a diagram showing the relationship between the fault detection function and the storage area of the present invention, in which fault information detected by each fault detection function F1-Fn of the CPM 1 is stored in the corresponding alarm buffers ALM BUF1-ALM BUFn. Indicates to save.

5 is a structural diagram of an Installation-Telephone Number Data Base (INS-TELDS) of the present invention, which includes a modem control field for storing contents for controlling the local modem 4, and an RT 50; Represents the installation telephone number database (INS-TELDB) of the CPM 1 which consists of a telephone number field for storing telephone numbers.

Hereinafter, an operation of an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5.

First, since the present invention is to inform the RT 50 at a remote location through the PSTN 30, the failure information detected when a failure occurs in the local exchange 10 of FIG. 1 for the inspection and maintenance of the exchange. The method of accessing the RT 50 is as follows.

The local modem 4 connected to the serial input / output port of the CPM 1 of the local exchange 10 is connected to one port of the SLC 2 by wire, so that the CPM 1 is connected to the local modem 4 through the local modem 4. Sending a digit is like an extension subscriber who is subscribed to the SLC 2 to hook off the telephone and press a button. Therefore, the local exchange 10 accesses the RT 50 by performing a trunk line call as the local modem 4 in the same manner as the extension subscriber hooks off and makes a trunk call. In this case, the modem 60 connected to the RT 50 may be connected to a remote private exchange 40 or directly to a CO line of a local exchange of a PSTN 30 when there is no remote private exchange 40. have. If connected to the remote private exchange 40, the local line of the local modem 4 is transferred to the modem 60 by a direct in-line service or a direct inward dialing service. Should be. When the trunk line call of the local modem 40 is transmitted to the modem 60, the modem 60 outputs a response signal. In this state, the modem 60 and the local modem 4 are connected to each other. Is immediately sent to the local modem 4.

When the local modem 4 receives the response signal, the local modem 4 enters the transparent mode. Therefore, when the CPM 1 sends data to the serial input / output port to which the local modem 4 is connected, the data can be accepted by the RT 50. In this state, when the local exchange 10 transmits information on the failure to the RT 50 and terminates the call, the remote private exchange 40 also terminates the call.

On the other hand, in the CPM 1 of the local exchange 10, there are various kinds of fault detection programs for fault detection. For example, failure detection of ROM and RAM, SLC failure detection, and the like. Each fault detection function is named F1-Fn as shown in FIG.

When a failure is detected by the failure detection function F1, information on the failure is temporarily stored in the first alarm buffer ALM BUF1 of the alarm buffer ALM BUF as shown in FIG. 4, and the failure detection function F2 is performed. ) Is temporarily stored in the second alarm buffer ALM BUF1, the fault detection function F2 is stored in the second alarm buffer ALM BUF2, and the fault detection function F3 is stored in the third alarm buffer ALM BUF3. In the failure detection function Fn, the data is temporarily stored in the nth alarm buffer ALM BUFn.

The failure information is, for example, the type of failure, the grade of the failure, the location of the failure, the time of failure, and the like. The alarm buffer ALM-BUF is empty in the initial state of the system and stored in the corresponding area whenever a fault is detected in this empty state. The present invention no longer mentions each fault detection function since the fault detection function itself is not an object. The information temporarily stored in the alarm buffer ALM BUF is taken out and processed by performing a message transmission function MSG TX, and then a processed trunk line is formed to transmit the processed information to the RT 50.

Referring to FIG. 3, the CPM 1 of the local exchange 10 transmits the failure information to the RT 50 as follows.

First, the CPM 1 initializes a variable, that is, a failure detection search number k, which is preset in step 1A to 1, and then performs step 2A. The failure detection search number k is used to count the number of failure detection types.

In the step (2A), it is checked whether the failure detection search number k is greater than the failure detection type number n indicating the number of failure detection types, and the failure detection search number k is the failure detection type number n. If larger, it means that the alarm buffer (ALM BUF) has been checked. Therefore, step (12A) is performed to terminate.

If the failure detection search number k is not greater than the failure detection type number n, step (3A) is performed. In the step (3A), it is checked whether or not information is empty in the kth alarm buffer ALM BUFk according to the fault detection search number k. Since the alarm buffer ALM BUFk is empty, step 11A is performed. If the fault is detected by the fault detection function Fk, since the fault information is contained in the k-th alarm buffer ALM BUFk, step (4A) is performed. In step (4A), it is checked whether the modem control flag inside the CPM 1 is set, that is, whether the local modem 4 is in the transparent mode. If the k th alarm buffer (ALM BUFk) is the first buffer containing the fault information, then the local modem 4 will be in the command waiting state. The modem control flag is set when the local modem 4 is in the transparent mode in the command waiting state.

In other words, the CPM 1 sends data controlling the local modem 4 when the local modem 4 is in a command waiting state.

Here, the local modem 4 uses a smart modem of Hayes Microcomputer Co., and the local line 10 has a CO line access code of 9, a CO line is a touch tone type, and a telephone of the RT 50. A case where the number is 745-0084 will be described as an example.

First, the installation telephone number database (INS-TELDB) is divided into a modem control field and a telephone number field as shown in FIG. The modem control field has contents for controlling the local modem 4, for example, ATDT (Attention + Dialing + Tone). AT denotes the start of a modem command, D denotes dialing, and T denotes a tone. The telephone number field contains information 9-745-0084 for accessing the RT 50. At this time, the contents of the modem control field can be changed because it depends on the modem manufacturer.

If the modem control flag is not set in step (4A), step (5A) is performed. If the modem control flag is set, step (9A) is performed. In step (5A), the contents of the installation telephone number database (INS-TELDB) are taken out and sent to the local modem 4 through the serial input / output port, and then step (6A) is performed. At this time, the local modem 4 is hooked off by the contents of the installation telephone number database (INS-TELDB) from the CPM (1) and the trunk line call for connection with the modem (60) to which the RT (50) is connected. When the connection with the modem 60 is performed, a response signal from the modem 60 is transmitted to the CPM 1 and the system enters the transparent mode. In step (6A), since the local modem 4 needs time to receive the contents of the installation telephone number database (INS-TELDB) and process them as described above, the local modem 4 waits for the response time. Then perform step (7A). In the step (7A), it is determined whether or not the connection with the modem 60 by receiving a response signal that the connection to the modem 60 from the local modem (4) is terminated if not connected. If it is connected in step (7A), perform step (8A) to set the modem control flag to indicate that the local modem (4) is in the transparent mode, and then perform step (9A). From now on, messages sent to the modem 60 are forwarded directly to the RT 50.

In step (9A), the fault information of the k th alarm buffer (ALM BUFk) is formatted in a format that can be output from the RT 50 to a printer or a terminal, and then to the RT 50 through a serial input / output port. In this case, the unique name of the site is processed together with the failure information.

Next, the step (10A) is performed to delete the contents of the k-th alarm buffer (ALM BUFk), and then step (11A) is performed.

In step (11A), the error detection search count (k) is increased by one, and looping is performed in step (2A) until the failure detection search count (k) becomes larger than the failure detection type number (n), that is, the alarm. The above process is repeated until all the contents of the buffer ALM BUF are retrieved.

On the other hand, the local modem 4 may have been placed in the transparent mode during the search. Therefore, in step 12A, it is determined whether the modem control flag is set, and if it is set, the local modem 4 is in a transparent mode. ) When the local modem 4 is in a command standby state and is hooked on, the trunk line used by the local modem 4 is hooked on. If the modem control flag is not set in the step (12A), it is terminated.

As described above, the present invention can automatically notify a remote maintenance center at a remote site when a failure is detected at each site, so that maintenance of a failure can be promptly and accurately processed without the need for a professional operating staff at each site. There is an advantage to that.

Claims (1)

CPM (1), SLC (2), TLC (3), and a local modem (4), and the fault detection function (F1-Fn) for detecting various faults and the fault detection function (F1-Fn) A local switch 10 having an alarm buffer (ALM BUF) and an installation telephone number database (INS-TELDB) for temporarily storing fault information, and a remote maintenance center for remotely maintaining the local switch 10. In the maintenance method of an exchange system having a computer and a terminal (50) and a modem (60), a first process (1A) of initializing a fault detection search number (k) and a fault detection search number (k) A second process (2A) for checking whether the fault detection type number (n) is greater than the second process (2A), and when the fault detection search number (k) is less than or equal to the fault detection type number (n) in the second process (2A). If the alarm buffer ALM BUFk corresponding to the fault detection search number k is empty or empty, the fault detection check The third processes 3A and 11A which increase the color number k by 1 and then proceed to the second process 2A, and correspond to the fault detection search number k in the third processes 3A and 11A If the fault information is stored in the alarm buffer (ALM BUFk) and the modem control flag is not set, the contents of the installation telephone number database (INS-TELDB) are sent to the local modem through a serial input / output port for connection with the modem. Waiting for a response and ending if it is not connected to the modem; if a response signal from the modem is received and connected, the fourth process (4A-8A) and the fourth process (4A-8A) for setting the modem control flag; When the modem control flag is set, the storage fault information of the alarm buffer ALM BUFk is formatted and sent to the computer and the terminal of the remote maintenance center through a serial input / output port, and the alarm buffer ALM BUFk is sent. The fifth process (9A-11A) of deleting and increasing the fault detection search number (k) by 1 and proceeding to the second process (2A), and the fault detection search number (k) in the second process (2A) A sixth step (12A-13A) of hooking-up the trunk line used by the local modem by putting the local modem into a command waiting state if the modem control flag is greater than the failure detection type number n and is not set; Remote alarm function method of the exchange, characterized in that consisting of.

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