JPH09101920A - Data holding system for speech path equipment and speech path equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent erroneous speech path data stored in a backup memory from being read out and to prevent speech path data from being set into a memory when the number of times of write into the memory exceeds a maxi mum value in the case of setting a speech path at a speech path equipment. SOLUTION: Concerning the speech path equipment composed of a switch control part 1 composed of a central control circuit 11, ROM 12, RAM 13, non-volatile backup memory 14 and external control interface circuit 15, speech path part 2 composed of a speech path switch 21 and a control memory 22 and external control equipment 3, the speech path data, write processing start flag and write processing end flag are stored in the non-volatile backup memory 14 and when both the flags are coincident at the time of restart after fault generation, restarting processing is executed while using the speech path data stored in the backup memory 14. When the values of flags get equal with the limited number of times of write, writing into this memory is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the retention of speech path data in a speech path device, and further, to store the speech path data in the speech path device in preparation for recovery and restart after detection of a failure such as power failure. Retention method.

[0002]

2. Description of the Related Art In a speech path device, a speech path is set by writing speech path data in a control memory for controlling speech path. However, since the volatile memory is used as the control memory from the viewpoint of the writing speed, when the power of the speech path device is cut off, the speech path data written in the control memory is lost. Therefore, when the speech path device is restarted after the power of the speech path device is cut off, it is necessary to reset the speech path from the external control device. However, it takes time until the setting of a new call path path is completed to reset the call path path from the external control device. This causes a problem such as time required for setting. As a method of coping with such a problem, it is possible to retain the call path data in a non-volatile backup memory provided in the call path device and reset the call path path in the call path device. This is an effective means for quickly reactivating the communication path after the power is cut off.

Even if such a backup system is adopted, if a failure such as power failure occurs while rewriting the communication path data in the backup memory,
There is a risk that the communication path data cannot be written to the backup memory reliably. Further, the non-volatile backup memory has a problem that the number of times of rewriting is limited. Regarding this backup, JP-A-4-295
No. 697 discloses EE as a non-volatile backup memory.
A method is described in which a PROM is applied and a write execution FLAG is used to determine whether the rewriting of data is normally completed. However, this method does not consider protection against the limited number of times of rewriting.

[0004]

In a speech path device having a backup memory for storing speech path data, the power of the speech path device is cut off while writing the speech path data to a backup memory provided in the device. In the event of a failure such as
Data may not be written. When the speech path device is restored and restarted in such a state, wrong speech path path data may be read, and the speech path path may be erroneously set. Furthermore, when the number of times of writing the communication path to the backup memory becomes large, it is considered that the backup memory is deteriorated when the number of times of writing to the backup memory is exceeded.
In such a case, there is a possibility that correct communication path data cannot be written in the backup memory.

The present invention has been made in view of the above problems, and in a speech path device having a backup memory for holding speech path data, it is determined whether or not speech path data is correctly held in the backup memory. It is an object of the present invention to provide a communication path data holding system and a communication path device capable of detecting deterioration of the backup memory due to the number of times of rewriting of the backup memory exceeding the limit number.

[0006]

In the data holding system of the speech path apparatus of the present invention, a backup memory having a storage means capable of holding the speech path path data even when the speech path apparatus is powered off is used, Judge whether the communication path path data held in the backup memory has been correctly written in the backup memory, and judge whether the number of times of rewriting the communication path path data in the backup memory exceeds the number of rewrites in the backup memory. By providing a start FLAG and an end FLAG for this purpose, it is possible to prevent erroneous setting of the communication path by reading wrong communication path data from the backup memory.
Furthermore, it is possible to detect the deterioration of the backup memory because the rewriting of the backup memory exceeds the rewriting limit number of times.

When the contents of the backup memory cannot be used, the external control device is requested to reset the communication path data. When the deterioration of the backup memory is detected, the external control device is requested to replace the board on which the backup memory is mounted or the replacement of the backup memory.

Start FLAG and End FLAG
Is preferably set in a predetermined area of the backup memory.

[0009]

In the present invention, the number of times of rewriting is set in the start FLAG and the end FLAG provided in the predetermined area of the backup memory, and the start FLAG and the end FAG are set.
Only when the LAG values match, the communication path data is read from the backup memory. When the backup memory is rewritten, the value obtained by adding 1 to the value of the read start FLAG (the number of times of rewriting) is set in the start FLAG, and then the communication path data is rewritten in a predetermined area of the backup memory. . After rewriting the communication path data in the predetermined area of the backup memory, the end FLAG is read, and the value obtained by adding 1 to the value of the read end FLAG
Set to LAG.

Here, it is assumed that the rewriting of the call path data is completed up to n times and an instruction for rewriting the call path data is issued from the external control device. When the rewriting of the communication path data can be normally completed, first, the number of rewriting n written in the start FLAG is read out, then 1 is added, and the number of rewriting n + 1 is added to the start FLAG.
Reset. Next, the communication path data in a predetermined area of the backup memory is rewritten. When the rewriting of the communication path data is completed normally, after reading the number of rewriting n written in the end FLAG, add 1 to end F
The number of rewrites n + 1 is reset in the LAG. That is, when the rewriting of the communication path data is completed normally, the values of the start FLAG and the end FLAG match.

Next, when reading the communication path data, the number of times of rewriting of the start FLAG and the end FLAG is read and compared. When the values of the start FLAG and the end FLAG match, the rewriting of the communication path data has been completed normally, so the communication path data is read. However, while writing the channel path data to the backup memory, a failure such as power failure of the channel device occurred, and the power supply voltage fell below the operating voltage of the backup memory and the writing did not end normally. In this case, the number of times of rewriting n + 1 is set in the start FLAG, and the number of times of rewriting n is left set in the end FLAG. In other words, when the rewriting of the call path data ends midway, the values of the start FLAG and the end FLAG do not match, so the call path data is not read out to the external control device without reading the call path data. Request settings. As described above, it is possible to read the channel path data only when the writing of the channel path data to the backup memory at the time of restarting after the power of the channel device is turned off normally ends. Can be prevented from being read.

Further, since the number of times of rewriting can be managed by the start FLAG, deterioration of the memory can be detected when the number of times of rewriting of the memory exceeds the number of times of rewriting.
That is, when the communication path data is written in the backup memory, the number of times of rewriting of the start FALG is read and compared with the number of times of rewriting of the backup memory. If the number of rewrites is within the limit, the communication path data is written in the backup memory. If the number of rewrites exceeds the limit,
Since the backup memory has deteriorated, it is possible to prevent the inconfirmation of the communication path data due to the deterioration of the memory by requesting the external control means to replace the board on which the backup memory is mounted or to replace the backup memory. You can

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A speech path data holding system and a speech path apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is an example of the configuration of a speech path device that realizes the “data holding method of the speech path device” according to the present invention.
Shows a configuration example of data in the backup memory in the communication path device shown in FIG. FIG. 3 is a flowchart showing a procedure for writing the call path data for instructing the setting and release of the call path from the external control device into the call apparatus, and FIG. FIG. 5 is a flow chart showing a raising procedure, and FIG. 5 is a flow chart showing an example of the exchange processing procedure of the communication path device.

Referring to FIG. 1, the speech path device of the present invention comprises a switch control section 1, a speech path section 2 and an external control device 3. The switch control unit 1 includes a central control circuit 11 including a microprocessor, a ROM 12 for holding programs and the like, and a RAM 13 for temporarily holding data.
A non-volatile and electrically erasable backup memory 14 for holding the communication path data, and an external control device 3
And an external control interface circuit 15 serving as an interface with. The call path unit 2 is composed of a call path switch 21 and a control memory 22. The control memory 22 for controlling the speech path switch 21 of the speech path unit 2 may be shared with the non-volatile backup memory 14 of the switch control unit 1.

The central control circuit 11 includes means 111 for detecting an abnormality in the contents of the backup memory achieved by software, means 112 for requesting the external controller 3 to reset the communication path data, and backup memory. Means 113 for calculating the number of times of rewriting, a means 114 for determining whether the number of times of rewriting is within the limit number, and a means 115 for notifying the external control device 3 of the completion of the communication path data setting.
have.

FIG. 2 shows a data structure 5 of the call path data stored in the backup memory 14 in the call path device. The FLAG area 5c (rewrite count area) in the backup memory 14 and the call path are shown. The structure of the path data area 5d is shown. Channel path data (1) 5e,
The call path data (2) 5f, ... Call path data (n) 5g indicates the call path data written from the external control device 3 to instruct the setting and release of the call path. Also, start FLAG 5a or end F
The stored numerical value of the LAG 5b is the number of times of rewriting the communication path data in the backup memory 14, and indicates the normality of the communication path data in the backup memory 14.

Next, the procedure for writing the communication path data in the backup memory 14 in the above configuration will be described in detail below with reference to FIG.

When a call path data setting command is issued from the external control device 3, the central control circuit 11 causes the ROM 12 to operate.
The speech path pass data rewriting routine stored in is activated to start the processing (S1). This communication path path data rewriting routine is performed by first referring to the backup memory 1 shown in FIG.
After reading the number of times of rewriting the communication path path data stored in the start FLAG 5a and the end FLAG 5b in the FLAG area 5c in 4 (S2), the rewriting frequency of both is compared (S3). If normal operation, that is, no trouble such as power-off of the communication path device during the rewriting of the backup memory 14, the number of times of rewriting the communication path data stored in the start FLAG 5a and the end FLAG 5b is the same. However, if a failure such as power-off of the speech path device occurs before the rewriting of the speech path path data is completed, the speech path path data stored in the start FLAG 5a and the end FLAG 5b are stored.
The number of data rewrites does not match. In such a case, the external control device 3 is notified that the content of the backup memory 14 is abnormal (S4).

If the number of times of writing is the same, the start FL
A value obtained by adding 1 to the number of rewrites is set for the AG 5a (S5). Start FLAG5a or End FLA
The value of the number of rewrites in G5b is compared with the number of rewrites (maximum value) for the backup memory 14 (S6). If the number of rewrites is less than the number of rewrites for the backup memory 14, the component performance of the backup memory 14 is guaranteed. It is determined that the communication path pass data area 5d shown in FIG.
The rewriting of the communication path path data is executed (S8).
When the rewriting of all path data is completed (S
9), FLAG area 5c in backup memory 14
The end FLAG 5b is set to a value obtained by adding 1 to the number of times of rewriting (S10), and after the setting, the external control device 3 is notified of the completion of the communication path data setting (S11). The communication path pass data rewriting routine is ended (S12).

In addition, in step S6, when the number of rewrite restrictions on the backup memory 14 is over,
It is considered that the backup memory 14 is deteriorated due to the limitation of the number of times of rewriting of the backup memory 14. Therefore, in this case, the error processing is executed without rewriting the speech path data in the speech path data area 5d in the backup memory 14. This error processing notifies the failure of path setting to the backup memory 114, notifies the external controller 3 that the number of times of rewriting the communication path data is over, and notifies the maintenance person of the backup memory. Exchange of 14 or backup memory 1
The replacement of the board on which No. 4 is mounted is prompted (S7). This makes it possible to prevent erroneous setting of communication path data due to deterioration of the backup memory 14.

If a failure such as power-off of the speech path device occurs during writing of the start FLAG 5d, the external control device 3 has not been notified of the completion of the setting of the speech path path data. By setting the channel path data from the device 3 to the channel device,
The contents of the backup memory 14 can be made normal. Further, if a failure such as power-off of the communication path device occurs after the notification of the completion of the communication path path data setting to the external control device 3 and before the completion of the communication path path data rewriting routine, the start-up in the backup memory 14 at the time of restart is started. When the contents of the FLAG 5a and the end FLAG 5b are compared with each other, they do not match. Therefore, it is determined that the writing of the call path data to the backup memory 14 has been completed and the external control device 3 is requested to reset the call path data. To do. As a result, the contents of the backup memory 14 can be made normal.

Next, when the speech path device is restarted after the power is cut off, a procedure for reading the speech path data from the speech path data area 5d in the backup memory 14 and setting it in the control memory 22 in the above configuration is shown. 4 will be described in detail below.

When the speech path device is powered on, the central control circuit 11 activates the speech path data setting routine in the start-up program in the ROM 12 (S21).
This speech path data setting routine reads the contents of the start FLAG 5a and end FLAG 5b in the backup memory 14 as shown in FIG. 4 (S22),
The two are compared to determine whether they match (S2).
3). The contents of the start FLAG5a are the end FLAG5
If it matches the content of b, it is judged that the writing of the call path data to the backup memory 14 has been completed normally, and the call path data is read from the call path data area 5d in the backup memory 14. The data is read and set in the control memory 22 (S25), and the process is terminated (S25).
26). When the contents of the start FLAG 5a and the contents of the end FLAG 5b do not match in step S23, it is determined that the writing of the communication path path data to the backup memory 14 has been completed halfway, and the communication path in the backup memory 14 is determined. The error processing is executed without reading the call path data from the path data area 5d (S24).
In this error processing, it is reported to the external control device 3 that the content of the communication path data held in the communication path device is abnormal. Upon receiving this report, the external control device 3 resets the call path data for the call path device, and also matches the start FLAG and the end FLAG to prevent erroneous setting of the call path. From the above, the call path pass
Even if the communication path path data cannot be written normally due to a failure such as power-off of the communication path device while the data is being set in the communication path path data area 5d in the backup memory 14. Since the wrong channel path data is not read out, it is possible to prevent the wrong setting of the channel path.

Next, the positioning of FIGS. 2 and 4 in the process of exchanging the speech path device in the above-mentioned configuration will be described in detail with reference to FIG.

The flow of processing relating to the setting of communication path data when the communication path device is operating normally will be described with reference to the flowchart of FIG. During normal operation of the communication path (S
31), when the call path data setting command is issued from the external control device 3, the central control circuit 11 activates the call path data rewriting routine stored in the ROM 12 and executes the processing of FIG. S32). After the processing of FIG. 3 ends normally, if a failure such as power interruption occurs in the communication path device (S3
3) At the time of restarting after the failure, the processing of FIG. 4 is executed (S34). After the processing of FIG. 4 ends normally, the speech path device enters normal operation (S35). After the processing of FIG. 3 is normally completed in step S33, and when the power failure or the like does not occur in the speech path device, the speech path device enters normal operation (S3
6).

As described above, according to the present invention, the external control device 3 is used.
Control path 13 for holding the call path path data for instructing setting and release of the call path path from the device and controlling the call path switch, and the call path path data when the power of the call path device is cut off.
Non-volatile backup memory 14 for holding data
In a communication channel device having a backup memory 14
Means 1 for detecting an abnormality in the contents of the backup memory due to a failure such as power-off of the communication path device during writing to
11, a means 112 for requesting the external control device to reset the communication path data, a means 113 for calculating the number of times of rewriting to the backup memory, and a means 114 for determining whether the number of times of rewriting is within the limited number of times. A means 115 for notifying the external control device of the completion of the setting of the communication path data is provided, and when an abnormality is detected in the backup memory 14 when the communication path is reset when the communication path device is restarted after the power is cut off, the external control is performed. When the device 3 is requested to reset the communication path data and the number of rewrites for the backup memory is exceeded, it is considered that the backup memory 14 has deteriorated. Therefore, the backup memory 14 is sent to the external control device 3. Request that the mounted board be replaced or the backup memory 14 be replaced. A data holding mode of speech path apparatus that can maintain the health of the contents of the backup memory even if a fault such as power-off of the road device generates.

The means 111 for detecting the abnormality of the contents of the backup memory and the communication path pass data are stored in the external control device.
Means 112 for requesting the resetting of the data, means 113 for calculating the number of times of rewriting to the backup memory, means 114 for judging whether the number of times of rewriting is within the limit number, and completion of the setting of the communication path data to the external control device. The means 115 for notifying is
It can be provided as software in the central processing unit 11.

Further, according to the present invention, means for holding digitally encoded voice information data and the like, means 1 for controlling a speech path switch, means 15 for interfacing with an external control device, control memory and peripherals. A means 11 for controlling the circuit, a means 12 for holding a program, a means 13 for temporarily holding data, and a non-volatile for holding speech path data for instructing setting and release of a speech path from an external control device. The present invention is also directed to a speech path device having a means 14 capable of electrically erasing.

[0029]

As described above, according to the data holding method of the speech path device of the present invention, the speech path path data for instructing the setting and release of the speech path is being written in the control memory and the backup memory. Even if an error such as power failure of the call path device occurs and the call path data cannot be written correctly, incorrect call path data will not be read out, thus preventing incorrect path setting. It becomes possible.

In addition to the above-mentioned effect of preventing wrong setting of the communication path, it is possible to obtain the number of times the communication path data is rewritten to the backup memory. Degradation can be detected, and erroneous setting of communication path data due to deterioration of the backup memory can be prevented.

[Brief description of the drawings]

FIG. 1 is a “data holding system of a communication path device” according to the present invention.
FIG. 3 is a block diagram showing a configuration example of a communication path device that realizes the above.

FIG. 2 is a diagram showing a configuration of a FLAG area (rewrite count area) in a backup memory for backing up the communication path data and a communication path data area.

FIG. 3 is a flow chart showing a procedure for writing the communication path path data in the backup memory and a procedure for writing the backup path memory applied when counting the number of times of rewriting the communication path path data in the backup memory according to the present invention.

FIG. 4 is a flow chart showing a procedure for reading out the speech path path data in the backup memory and setting it in the control memory when the speech path apparatus is restarted after the power is turned off.

FIG. 5 is a procedure for writing the call path data in the backup memory 14 in the process of replacing the call path device, and the backup memory 14 at the time of restarting after the power of the call path device is cut off.
6 is a flowchart showing a procedure for reading the communication path data in the memory and setting it in the control memory.

[Explanation of symbols]

 1 Switch Control Section 11 Central Control Circuit 12 ROM 13 RAM 14 Backup Memory 15 External Control Interface Circuit 2 Speech Path Section 21 Speech Path Switch 22 Control Memory 3 External Control Device 5 Data Structure 5a Start FLAG 5b End FLAG 5c FLAG Area 5d Call path data area 5e Call path data (1) 5f Call path data (2) 5g Call path data (n)

Front page continuation (72) Inventor Shigeo Yoshizawa 216 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa, Ltd. Information & Communication Division, Hitachi Ltd. (72) Inventor Hitoshi Imagawa 1-6, Uchisaiwai-cho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Isao Higashi 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (5)

[Claims] 1. A control memory for holding communication path path data for instructing setting and release of a communication path path from an external control device and controlling the communication path switch, and a communication path path data when the power supply of the communication path apparatus is cut off. -In a speech path device having a non-volatile backup memory for holding data, means for detecting an abnormality in the contents of the backup memory due to a failure such as power-off of the speech path device that occurred during writing to the backup memory, and an external device The control device is provided with a means for requesting the resetting of the speech path data, and when an abnormality is detected in the backup memory when the speech path is reset when the speech path device is restarted after the power is cut off, the external control device A method for holding data of a communication path device, characterized in that the communication path path data is requested to be reset. 2. A means for calculating the number of times of rewriting to the backup memory and a means for determining whether the number of times of rewriting is within a limit number are provided, and when the number of times of rewriting to the backup memory is exceeded, the backup memory deteriorates. The data holding method of the communication path device according to claim 1, wherein the external control device is requested to replace the substrate on which the backup memory is mounted or to replace the backup memory. 3. The normality of the contents of the backup memory even when means for notifying the external control device of the completion of the setting of the communication path data is provided, and even when a failure such as power-off of the communication path device occurs during the setting of the communication path. The data holding method of the communication path device according to claim 1 or 2, wherein the data holding method can be maintained. 4. A data holding system for a communication channel apparatus according to claim 1, wherein a control memory for controlling the communication channel switch is shared with a non-volatile backup memory. 5. A means for holding digitally encoded voice information data and the like, and a means for controlling a speech path switch,
Means for interfacing with an external control device, means for controlling the control memory and peripheral circuits, means for holding a program, means for temporarily holding data, setting of a communication path from the external control device, and A non-volatile and electrically erasable means for holding the communication path data for instructing release.