JPH07162424A - Program load method for network monitor system - Google Patents

Abstract

PURPOSE:To prevent artificial mistakes in advance by down-loading a program from a remote equipment to each monitor installed to each interface point on a signal circuit so as to improve the program revision job efficiency. CONSTITUTION:When a parameter read command is sent from a remote controller 9 to a monitor 6. The monitor 6 reads an operation parameter in operation from a parameter memory 13c to send it to the controller 9. The controller 9 stores the received parameter to a save parameter memory and sends a preparation command of program down-load to the monitor 6 upon the receipt of a transfer end notice. The monitor 6 clears a memory not in operation in program memories 13a, 13b. Upon the receipt of a clearing end notice, the controller 9 divides a new program stored in a setting program memory 28a into plural numbers and down-loads the divided programs to the monitor 6. The monitor 6 writes the new program received sequentially to each unit area of the cleared memory in the memories 13a, 13b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network monitoring system for monitoring the communication status of each signal line of a communication network such as ISDN or packet communication network, and more particularly to a program for a monitoring device for monitoring the communication status of each interface point. The present invention relates to a program loading method for a network monitoring system with an improved setting method.

[0002]

2. Description of the Related Art ISDN (Integrated Services Digital Network), packet communication network and the like are communication systems for transmitting a large number of multiplexed data at high speed and efficiently. In such a communication system, the I integrated in the communication network
The SDN exchange is connected to a DSU (line terminating device) installed in the user's house via an ISDN signal line, and this D
A large number of terminals such as telephones, telexes, personal computers, and facsimiles are connected to the SU (line terminating device).

An ISDN exchange in a communication network is connected to a DTE (packet terminal) via a packet signal line and a DCE (data line terminating device). Further, in some cases, a normal telephone terminal is connected to the ISDN exchange through an analog telephone line.

Then, when a communication system having such a configuration is newly constructed or at the time of regular inspection and maintenance, each ISD
In N signal line and packet signal line, cable disconnection failure, connector contact failure, exchange and DSU
It is necessary to confirm whether or not there is a hardware failure such as an abnormal connection with the DCE or the DCE.

Furthermore, it is necessary to measure the line quality such as a transmission error over a long period of time and statistically evaluate it. Conventionally, when such a test is carried out, a monitoring device is connected to a connection point between each device in each signal line, that is, each interface point such as an S / T point and an R point, and the communication state of each point is connected. Was displayed on a monitor by a cathode ray tube or the like, and the signal waveform or digital value was analyzed to estimate the position where the abnormality occurred.

An operation program for controlling the monitoring operation of each monitoring device is generally written in a ROM (read only memory). And the RO where the operation program is written
M is mounted on the CPU board in the apparatus.

[0007]

However, in the method of installing each of the above-mentioned monitoring devices at each interface point in the user's house and observing the signal waveform or the measured digital value by the technician resident, there is still a problem. There was a problem as shown in.

That is, each of the above-mentioned monitoring devices monitors the communication state of the signal line to be monitored and detects the occurrence of an abnormality in the signal line. However, the operating program of the monitoring device itself may be changed. For example, in the following cases, it is necessary to change or improve this operation program.

(A) The operation program of the monitoring device has a problem in itself. (B) The communication protocol specification of the communication system to be monitored has changed. (C) Different information of signals flowing on the signal line is detected. (D) It was necessary to improve the method of processing each data of the detected communication status. (E) Extract and monitor specific information of the communication status according to the customer's request. When it is necessary to change the operation program after installing the monitoring device in the user's house, the ROM device mounted on the CPU board in the monitoring device is written with a newly developed or improved new program. R
It is designed to be replaced with an OM element.

As described above, when measuring the line quality such as a transmission error, since the monitoring device remains installed in the user's house for a long period of time, the worker goes to each user's house to replace the ROM element. I was working on it. Therefore, it takes a lot of time and effort to change the program.

Further, the monitoring work in the monitoring device is executed according to the above-mentioned operation program. When executing the program, various arithmetic processing is executed using various operation parameters. This operation parameter is set when the operator actually connects the monitoring device to each interface point, such as various coefficients and constants and operation range. Therefore, it is a value set by the specification person of this monitoring device. Therefore, these operation parameters are stored in a parameter memory different from the operation program.

Therefore, when the operation program is executed, the address in which the corresponding operation parameter is stored in the parameter memory is designated to read out the necessary parameter and execute the arithmetic processing using this parameter.

When the operating program is changed, even if the operating parameters are the same, a new operating program may be designated to write at a different address.

Therefore, when the operation program is changed, the stored contents of the parameter memory are once erased together with the old operation program, and then, according to the new program,
It is necessary for the operator to use the man-machine function to reset the same parameters by manual operation again.

In this way, in addition to the ROM element replacement work at the user's house, a very complicated work of resetting the same operation parameters after the ROM replacement is added. In the manual setting, there is a concern that human error may occur such that the numerical value to be set is erroneously input. As a result, in addition to requiring a lot of time and labor for changing the program, there is a concern that a process using an erroneous parameter may be executed due to a human error.

The present invention has been made in view of the above circumstances, and a ROM is installed in a user's home by downloading a program from a remote monitoring device to each monitoring device installed at each interface point on a signal line.
The element replacement work and parameter setting work can be omitted, and the program of each monitoring device can be changed easily at any time on the monitoring control device side, the work efficiency of the program change can be greatly improved, and erroneous setting of parameters etc. It is an object of the present invention to provide a program loading method for a network monitoring system that can prevent human error in advance.

[0017]

In order to solve the above problems, the program loading method of the present invention comprises a plurality of monitoring devices for detecting the communication status at each interface point on a signal line of a communication network, and the monitoring devices. The present invention is applied to a network monitoring system having a remote control device that collects the communication status detected in 1.

Further, in the program loading method of the present invention, the monitoring device transmits the operating parameter set in its parameter memory to the remote control device, and the remote control device temporarily receives the received operating parameter. To the program memory of the monitoring device, and then save the running parameters to the address position specified by the new program in the parameter memory of the monitoring device as a new parameter. I am trying to reset it.

[0019]

In the program loading method configured as described above, when it is necessary to change the program of the monitoring device for detecting the communication state at each interface point on the signal line of the communication network, the parameter memory of the monitoring device is changed. The operating parameters stored in are temporarily saved in the remote control device. Then, after that, the new program is downloaded from the remote control device to the corresponding monitoring device.

The operating parameter saved in the remote control device is written as a new parameter in the address position designated by the new program in the parameter memory of the monitoring device.

As described above, in the normal state, in the remote control device that collects the communication state at each interface point detected by each monitoring device, for example, a new device is added to each monitoring device via a transmission line that collects the communication state. The program is downloaded. Therefore, it is not necessary to perform operations such as ROM element replacement in each monitoring device.

The operating parameter is automatically written in the address location designated by the new program in the parameter memory. Therefore, it is not necessary to perform the resetting work with the same parameter as the work type in the monitoring device.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a communication system incorporating the network monitoring system of the embodiment.

The ISDN signal line 2a connected to one ISDN switch in the communication network 1 composed of a large number of ISDN exchanges and a large number of signal lines connecting them to each other is a DSU (provided in the user's house. Circuit termination equipment) 3a. T for this DSU3a
It is connected to a terminal 5 such as a general subscriber telephone via an A (terminal adapter device) 4.

Although not shown, in an actual communication system, many ISDN communication lines are connected to the ISDN exchange in the communication network 1. DSU3
interface between a and TA4, ie S / T
The point interface consists of a basic interface or a primary group velocity interface. Further, the interface between the TA 4 and the terminal 5, that is, the interface at the R point is composed of a serial interface such as RS-232C.

The S / T between the DSU (line terminating device) 3a and the TA (terminal adapter device) 4 on the ISDN signal line 2a in the communication system having such a basic configuration.
The monitoring device 6 is connected to the point and the R point between the TA 4 and the terminal 5. The monitoring device 6 is also connected to many other ISDN signal lines (not shown).

The monitoring device 6 is a DSU 3b and an ISDN.
ISDN in the communication network 1 via the signal line 2b
It is connected to the exchange. Further, the monitoring device 6 is connected to an ISDN exchange in the communication network 1 via a modem 7a and a telephone line 8a.

Further, the DSU is connected to another ISDN signal line 2c connected to the ISDN exchange of the communication network 1.
A remote control device 9 is connected via 3c. This remote control device 9 is connected to an ISDN exchange in the communication network 1 via a modem 7b and a telephone line 8b. The remote control device 9 is installed, for example, in the management center of the telephone company.

FIG. 2 is a block diagram showing the schematic arrangement of the monitoring device 6 for detecting the signal states of the interface points S / T and R. The monitoring device 6 is composed of a kind of information processing device such as a microcomputer.

For the system bus 10, a CPU 11 for executing various information processing, a RAM 12 for temporarily storing various variable data, a flash memory 13 for storing operation programs and operation parameters, and a communication state detected at each interface point are shown. An SRAM 14 backed up by a stored battery, a clock circuit 15 for elapse of time, a communication unit 17, an operation unit 18 to which a power switch, an indicator lamp, various operation buttons and the like are attached are connected.

As shown in FIG. 3, the flash memory (a read-only memory capable of electrically erasing and rewriting all at once) 13 stores operation programs for various processing operations executed by the monitoring device 6. A pair of program memories 13a and 13b having the same configuration and a parameter memory 13c for storing operating parameters during operation are formed.

The pair of program memories 13a, 13
Each operation program stored in b is the remote control device 9
Downloaded directly from. Each program memory 13a, 13b has the same address space,
The operation program in one of the program memories 13a and 13b is designated as the in-operation operation program by bank switching after the reset is released after the power of the apparatus is turned on.

Each program memory 13a, 13b
Since the capacity of the operation program stored in is large,
As shown in, each program memory 13a, 13b is divided into a plurality of unit areas 13d, and each unit area 13d is divided and downloaded.

As described above, the operation parameters stored in the parameter memory 13c are various coefficients and constants used when the CPU 11 executes the operation program designated as in operation, and constants such as operation range.

The communication unit 17 is connected via the switching unit 19 to the connection terminals 20a and 20b connected to the S / T point of the ISDN signal line 2a to be monitored and the connection terminal 21 connected to the dedicated ISDN signal line 2b. Has been done. Further, the communication section 17 is connected to the connection terminal 22 connected to the telephone line 8a.

The monitor section 16 is connected via the connection terminals 20a and 20b connected to the S / T point and the adapter device 23 to the connection terminal 24 connected to the R point of the ISDN signal line 2a to be monitored.

In the SRAM 14, a monitor information file 14a for storing the monitor information of the S / T point and the R point together with the time of occurrence and the number of times of the log information of the S / T point and the R point are stored. A log information memory 14b is formed.

The monitor section 16 includes a connection terminal 20a.n connected to the S / T point of the ISDN signal line 2a. The communication state at the S / T point input from 20b and the communication state at the R point input via the adapter device 23 are monitored. Specifically, the protocol information of each layer 1, 2, 3 in each D, B channel is monitored.

When the communication state changes, the change time is written in the monitor information file 14a as monitor information in time series. Further, the monitor unit 16 has predetermined log information (event occurrence information) among the detected monitor information (protocol information) of each of the layers 1, 2, and 3.
Is detected and the number of occurrences of the event stored in the log information file 14b is updated.

The communication unit 17 exchanges various information and data with the remote control device 9 via the ISDN signal line 2a to be monitored, or the dedicated ISDN signal lines 2b and 2c or the telephone lines 8a and 8b. Run. The operator preliminarily selects and sets which transmission path to use.

The CPU 11 receives the monitor information and the log information stored in the monitor information file 14a and the log information file 14b from the remote control device 9 in response to the transmission request from the remote control device 9 received via the communication section 17. It has a function to send to.

Further, the CPU 11 is a flash memory 13
A response process to the download process of the operation program from the remote control unit 8 for each of the program memories 13a and 13b is executed.

FIG. 4 is a schematic configuration diagram of the remote control device 9. The remote control device 9 is also composed of a kind of information processing device such as a personal computer like the monitoring device 6.

That is, for the system bus 25, a CPU 26 that executes various processing tasks, a ROM 27 that stores various fixed data such as control programs, a RAM 28 that temporarily stores operation programs and the like to be transmitted to each monitoring device 6,
Communication unit 29, data collection unit 31 for writing data received by communication unit 29 in data file 30, CRT display device 3
An operation unit 32 having a man-machine function including a keyboard 2b and a keyboard 32b, a printer 33, and the like are connected.

The communication unit 29 is connected to the ISD via the connection terminal 34.
It is connected to the N signal line 2c and is also connected to the telephone line 8b via the connection terminal 35. Further, the communication unit 29 is an RS-232C that can be connected to an external host computer or the like.
It is connected to a connection terminal 36 having an interface standard.

In the data file 30, there are a monitor information collecting memory for storing monitor information transmitted from each monitoring device 6 and a log information collecting memory for storing log information similarly transmitted from each monitoring device 6. Has been formed.

In the RAM 28, a save parameter memory 28a for temporarily saving operating parameters of the monitoring device 6 in operation, a setting program memory 28b for temporarily storing a new program for setting in the monitoring device 6,
A setting condition memory 28c for storing various setting conditions such as each time when the new program is downloaded is formed in each monitoring device 6.

In such a network monitoring system, when a new operation program is set in a specific monitoring device 6, the new program to be set is, for example, a floppy disk drive (FDD) not shown.
Or the RA of the remote control device 9 from an external host computer
Write to the setting program memory 28b of M28.

When the download time of the corresponding monitoring device 6 set in the setting condition memory 28c is reached, the download process of the operation program from the remote control device 9 to the corresponding monitoring device 6 is performed according to the procedure shown in the sequence diagram of FIG. To be executed.

First, a parameter read command is sent from the remote control device 9 to the monitoring device 6. The monitoring device 6 reads the operating parameter in operation from the parameter memory 13c and transmits it to the remote control device 9. The remote control device 9 stores each received operation parameter in the save parameter memory 28a.

The monitoring device 6 sends an end notification when the transfer of all operating parameters is completed. Upon receiving the end notification, the remote control device 9 sends a program download preparation command to the monitoring device 6. The monitoring device 6 clears the inactive program memory of the two program memories 13a and 13b.

Upon receiving the clear end notification, the remote control device 9 divides the new program stored in the setting program memory 28b into a plurality of pieces and downloads them to the monitoring device 6. The monitoring device 6 receives the program memories 13a, 1 on the side where the divided new programs which are sequentially received are cleared.
Data is sequentially written in each unit area 13d of 3b.

When the monitoring device 6 receives the transfer completion notification from the remote control device 9, it checks that the newly written new program has no write error and sends a normal notification. When the remote control device 9 receives the normal notification from the monitoring device 6, the remote control device 9 determines that the new program has been normally downloaded, and sends a reset command. Then, the monitoring device 6 performs automatic reset, and the monitoring device 6 shifts to the reset state.

In the state where the reset state of the monitoring device 6 is released, the remote control device 9 transmits a parameter download preparation command. The monitoring device 6 clears the parameter memory 13c. Upon completion of clearing the parameter memory 13c, the remote control device 9 sends each parameter stored in the saved parameter memory 28a to the monitoring device 6 with the address designated by the new program added.

The monitoring device 6 writes each received parameter in a designated address in the parameter memory 13c. When the writing of all parameters is completed, the monitoring device 6 temporarily shifts to the reset state.

During the download period of the new program and parameters, the CRT display device 32a of the operation unit 32 displays the message 37 during program download shown in FIG.

In the program loading method configured as above, an operation procedure performed by the operator using the remote control device 9 will be described with reference to the flowchart of FIG. First, the operating parameters in operation of the parameter memory 13c are saved in the save parameter memory 28a of the remote control device 9. Next, the new operating program is downloaded to the program memory on the non-operating side. Next, the saved operation parameters are reset to the original parameter memory.

When the above processing is completed, the banks of the flash memory 13 are switched, and the monitoring device 6 is put into operation by a new program. Then, it is determined that the monitoring device 6 is operating normally from, for example, the received monitor information. If it is normal, this operation ends.

If it is not normal, the operation is restarted with the original operation program by switching the bank. In this case, it is necessary to restore the address of the parameter. Then, the new program is reviewed and revised.

According to the program loading method configured as above, when it is necessary to change the operation program of each monitoring device 6, the remote control device 9 can directly download the program. There is no need to replace the ROM element in which the program is written.

Further, the operation of resetting the operation parameters due to the change of the program can be automatically carried out on the remote controller 9 side. Therefore, it is possible to prevent occurrence of human error such as erroneous setting due to resetting. Therefore. Since the work associated with the program change can be performed entirely at the remote control device 9 side, not at the user's house, the work efficiency can be greatly improved.

[0062]

As described above, according to the program loading method of the present invention, the program is downloaded from the remote control device to each monitoring device installed at each interface point on the signal line. In addition, the operating parameters are also temporarily saved and then reset to correspond to the new program. Therefore, the ROM in the user's house
Element replacement work and parameter setting work can be omitted, and the remote control device side can easily change the program of each monitoring device at any time, greatly improving the work efficiency of program change and erroneous parameter setting etc. Human error can be prevented in advance.

[Brief description of drawings]

FIG. 1 is a block diagram showing a communication system incorporating a monitoring system adopting a program loading method according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a monitoring device of the monitoring system.

FIG. 3 is a diagram showing a configuration of a flash memory of the monitoring device.

FIG. 4 is a block diagram showing a schematic configuration of a remote control device of the monitoring system of the same example.

FIG. 5 is a sequence diagram showing the operation of the method of the embodiment.

FIG. 6 is a diagram showing display contents of a CRT display device in the remote control device.

FIG. 7 is a diagram showing an operation procedure performed by an operator.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Communication network, 2a-2c ... ISDN signal line, 3a, 3b, 3c ... DSU, 4 ... TA, 5 ... Terminal,
6 ... Monitoring device, 9 ... Remote control device, 13 ... Flash memory, 13a, 13b ... Program memory, 13c ... Parameter memory, 16 ... Monitor part, 17, 29 ... Communication part, 31 ... Data collecting part, 28a ... Evacuation parameter Memory, 28b ... Setting program memory, 32 ... Operation part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Goji Oshima 1-6, Uchiyuki-cho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Hiroshi Takeuchi 1-1-6, Uchisai-cho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation

Claims (1)

[Claims] 1. A network monitoring system having a plurality of monitoring devices for detecting a communication state at each interface point on a signal line of a communication network, and a remote control device for collecting the communication state detected by each monitoring device. In the program loading method, the monitoring device sends the operating parameter set in its parameter memory to the remote control device, and the remote control device temporarily saves the received operating parameter to its save memory. , Then downloading the new program to the program memory of the monitoring device, after which
A program loading method for a network monitoring system, characterized in that the saved operating parameter is reset as a new parameter to an address position specified by a new program in a parameter memory of the monitoring device.