JP3670140B2 - Subscriber information protection system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a subscriber information protection system capable of resuming communication processing with accurate and latest subscriber information when an abnormality occurs in subscriber information due to a program abnormality or the like.
[0002]
[Prior art]
In the communication processing system, it is necessary to execute the incoming connection and outgoing connection of the subscriber in real time. For this reason, in the communication processing system, subscriber information is stored in a memory (SRAM, DRAM, etc.) that can be accessed at high speed by the communication processor. However, the subscriber information stored in the memory may be destroyed due to a program abnormality or the like. For this reason, the subscriber information protection system in the conventional communication processing system does not store the subscriber information only in the memory, but stores the same subscriber information in another medium, for example, a nonvolatile storage device (HDD or the like). I am letting. When the subscriber information on the memory is destroyed, the subscriber information stored in another medium is expanded in the memory, and the communication process is resumed.
[0003]
[Problems to be solved by the invention]
However, in the conventional protection system, since the subscriber information on the memory is copied to the nonvolatile storage device, after the subscriber information on the memory is destroyed for some reason, the fact of such destruction is not detected, Subscriber information that has already been destroyed may be stored in a non-volatile storage device. In this case, the subscriber information cannot be accurately reproduced even if the subscriber information on the nonvolatile storage device is expanded in the memory in order to resume the communication process.
[0004]
An object of the present invention is to protect subscriber information that enables resumption of communication processing based on accurate and up-to-date information when some abnormality occurs in subscriber information on a memory accessed by the communication processing processor when the communication processing is executed. To provide a system.
[0005]
[Means for Solving the Problems]
To achieve the above object, a first feature of the present invention is a subscriber information input unit for inputting subscriber information, a converter for converting the subscriber information into a data format for communication processing, A subscriber information protection system comprising: first and second storage units for storing subscriber information; and a control unit for controlling communication processing and the whole based on the subscriber information, wherein the subscriber information input A process of transmitting the subscriber information from the subscriber unit to the first storage unit via the converter, and the subscription from the subscriber information input unit to the second storage unit without passing through the converter. The process of transmitting the user information is performed in parallel, and when executing the communication process, the control unit accesses the first storage unit, but does not access the second storage unit. When the subscriber information in the storage unit is destroyed, Interrupted by sending the subscriber information of the second storage unit to the first storage unit, and allows resume communication process lies in.
[0006]
Subscriber information includes the subscriber number, rate plan, whether or not you are subscribed to an answering machine service, whether or not you are subscribed to a call waiting service, and the current subscriber starts that service. Information such as whether or not a subscriber is communicating at a certain point in time. The answering machine service is a service for recording a message when the subscriber's telephone is not turned on or when the subscriber does not answer. The call waiting service refers to a service that allows a subscriber to receive an incoming call when there is a new incoming call.
[0007]
In addition, the communication processing is, for example, when a subscriber's outgoing call is connected to another subscriber, or when a subscriber receives a new incoming call while the subscriber is communicating, If the subscriber information is checked and the call waiting service is subscribed, the new incoming call is connected to the subscriber.
[0008]
In addition, a memory (SRAM, DRAM, etc.) that can be accessed at high speed by the control unit is used as the first storage unit. In addition, a non-volatile storage device (for example, HDD) or the like is used as the second storage unit.
[0009]
In the above configuration, the subscriber information input from the subscriber information input unit is transmitted to and stored in the first storage unit. In parallel with this, the subscriber information input from the subscriber information input unit is transmitted and stored in the second storage unit without going through the first storage unit.
[0010]
While the communication process is being executed, the control unit accesses the first storage unit, but cannot access the second storage unit. The access to the second storage unit of the control unit is abnormal when the new subscriber information input from the subscriber information input unit is registered in the second storage unit and the subscriber information in the first storage unit is abnormal. Occurs when the subscriber information is read from the second storage unit and the subscriber information is expanded in the first storage unit. This prevents subscriber information on the second storage unit from being rewritten carelessly by the control unit.
[0011]
In any case, the subscriber information stored in the second storage unit is not overwritten by the subscriber information stored in the first storage unit. Further, the subscriber information on the second storage unit is not destroyed by the control unit during the communication process. For this reason, even if the subscriber information on the first storage unit is destroyed by the control unit, the communication is resumed based on the subscriber information on the second storage unit, so that the accurate and latest subscriber information is obtained. The communication process can be resumed.
[0012]
The second feature of the present invention is that the subscriber information stored in the second storage unit is received , converted into a data format for communication processing, and sent to the first storage unit. It is to further have a converter .
[0013]
The communication processing data format refers to a bit format (for example, 0100001010...) Indicated by “0” or “1”. The data format before conversion to the communication processing data format is a character format.
[0014]
The information is stored in the second storage unit without being converted into the data format for communication processing, and the data format is used when it becomes necessary to transmit the subscriber information from the second storage unit to the first storage unit. Convert. An abnormality may occur in the first converter, and subscriber information cannot be correctly written in the first storage unit, so that communication processing must be interrupted. Even in such a case, data in the second storage unit is converted using the second converter and written to the first storage unit, so that communication processing based on correct subscriber information can be resumed. Reliability is further improved.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a subscriber information protection system according to an embodiment of the present invention. The subscriber information protection system shown in FIG. 1 includes an input system 11 as a subscriber information input unit, a receiver 14, a converter 16 as a first converter, a converter 25 as a second converter, a backup guarantee. 18. A memory 20 as a first storage unit, a nonvolatile storage device 22 as a second storage unit, and a communication processor 24 as a control unit.
[0016]
The input system 11 is connected to the receiver 14 through the signal line 12. Receiver 14 is connected to converter 16 through signal line 15 and to backup guarantee 18 through signal line 17. The converter 16 is connected to the memory 20 through the signal line 19. The memory 20 is connected to the communication processor 24 through the signal line 23. The backup guarantee 18 is connected to the nonvolatile storage device 22 through the signal line 21. The nonvolatile memory device 22 is connected to the converter 25 through the signal line 26. The converter 25 is connected to the memory 20 through the signal line 27.
[0017]
FIG. 2 is a block diagram showing a data flow when data is accumulated in the first and second storage units and communication processing is performed in the system shown in FIG.
[0018]
The subscriber information is transmitted from the input system 11 to the receiver 14. Further, the subscriber information is transmitted from the receiver 14 to the converter 16 and converted into a format required for communication processing by the communication processor 24. The converted subscriber information is transmitted to the memory 20 and registered in the memory 20. The communication processor 24 accesses the subscriber information on the memory 20 and performs communication processing.
[0019]
Data transmitted from the input system 11 to the converter 16 via the receiver 14 is, for example, data in a character format “subscriber A, answering machine service subscription”. This character format data is input to the converter 16, converted into bit format data, and output. Assuming that the user who has not subscribed to the voice mail service is “0” and the subscriber is “1”, the bit format data output from the converter 16 is stored in the memory 20 when it is input to the memory 20. The data in the answering machine service column of the subscriber information of subscriber A is changed from “0” to “1”.
[0020]
The subscriber information transmitted from the input system 11 to the receiver 14 is also transmitted to the backup guarantee 18. Further, the subscriber information is transmitted to the nonvolatile storage device 22 and stored in the nonvolatile storage device 22.
The backup guarantee 18 is a device for increasing the reliability of the subscriber information in the nonvolatile storage device 22 and can store, for example, all logs of the subscriber information transmitted from the input system 11. In addition, there is a field where it is required to quickly start providing a new service or stop providing a conventional service according to changes in user needs. In such a field, in order to remove the risk of destruction of subscriber information due to the addition or deletion of service types, even if service items are added or deleted, the program is not changed in the nonvolatile storage device 22. It is a device that makes it possible to write subscriber information. The service means an answering machine service, a call waiting service, a call forwarding service, and the like.
[0021]
The data input from the receiver 14 to the backup guarantee 18 is the same character format data as the data input from the receiver 14 to the converter 16. The backup guarantee 18 merges character format data for each subscriber. That is, when data “subscriber A, answering machine service subscription” is newly entered, this data and subscriber A's data “subscriber A, subscription to call waiting service” are merged, “Subscriber A, call waiting service subscription, answering machine service subscription”. Then, the merged data is stored in the nonvolatile storage device 22.
[0022]
FIG. 3 is a block diagram showing the data flow when the data in the first storage unit is destroyed in the system shown in FIG. 1, the data in the second storage unit is expanded in the first storage unit, and communication is resumed. FIG. When the subscriber information on the memory 20 is destroyed, the merged subscriber information on the non-volatile storage device 22 is converted into a bit format by the converter 25, transmitted to the memory 20, and the communication process is resumed. The converter 25 converts the merged character format data. On the other hand, the converter 16 converts the unmerged character format data.
[0023]
As described above, during the communication process, the communication processor 24 accesses the memory 20 but does not access the nonvolatile storage device 22. The communication processor 24 accesses the non-volatile storage device 22 when the subscriber information in the memory 20 is destroyed and the subscriber information stored in the non-volatile storage device 22 is pulled up to the memory 20 and the input system. 11 only when subscriber information is newly registered in the nonvolatile storage device 22. The communication processor 24 does not access the nonvolatile storage device 22 except for these two cases. From the above, the destruction of subscriber information due to access to a large number of communication processing processors does not occur in the nonvolatile storage device 22.
[0024]
When the subscriber information in the memory is destroyed by accessing a large number of communication processors, the subscriber information is stored in memory from another medium (such as a non-volatile storage device) in which the subscriber information destroyed in the memory is stored as it is. The communication processing was resumed. For this reason, there is a possibility that normal communication processing cannot be resumed.
[0025]
However, in the present embodiment, in parallel with the process of registering the subscriber information in the memory 20, the subscriber information is also stored in the nonvolatile storage device 22, and the subscriber information on the memory 20 is destroyed. In addition, since the subscriber information stored in the non-volatile storage device 22 is expanded in the memory 20, the memory 20 can resume the communication process using normal and latest information. As described above, in parallel with the process of registering the subscriber information in the memory 20, the subscriber information is stored in the nonvolatile storage device 22 without going through the memory 20, and the nonvolatile storage device of the communication processor 24 is used. By restricting access to the subscriber information 22, the reliability and security of the subscriber information processing system can be improved.
[0026]
【The invention's effect】
As described above, according to the present invention, the first and second storage units are provided, the subscriber information input unit transmits the subscriber information to the first storage unit, and the subscriber information input unit The process of transmitting the subscriber information to the second storage unit without going through the first storage unit is performed in parallel, so that the second storage unit is used according to the destroyed subscriber information of the first storage unit. It is possible to prevent the subscriber information from being destroyed.
[0027]
In addition, when the communication process is executed, the control unit accesses the first storage unit, but does not access the second storage unit. It is possible to prevent the subscriber information from being destroyed.
[0028]
Then, when the subscriber information in the first storage unit is destroyed, the communication process is interrupted, the subscriber information in the second storage unit is transmitted to the first storage unit, and the communication process is resumed. Therefore, it is possible to resume communication processing with normal and latest information, and the reliability of the system is improved.
[0029]
Furthermore, even when an abnormality occurs in the first converter and communication processing is interrupted, the subscriber information in the second storage unit is converted using the second converter, and communication is performed based on the converted data. By restarting the process, the reliability of the system is further improved.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a subscriber information protection system according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a data flow when data is accumulated in the first and second storage units and communication processing is performed in the subscriber information protection system shown in FIG. 1;
FIG. 3 is a block diagram showing a data flow when data in the first storage unit is destroyed in the system shown in FIG. 1, data in the second storage unit is expanded in the first storage unit, and communication is resumed. FIG.
[Explanation of symbols]
11 Input System 14 Receiver 16 First Converter 18 Backup Guarantee 20 Memory 22 Nonvolatile Storage Device 24 Communication Processing Processor 25 Second Converter

Claims (2)

A subscriber information input unit for inputting subscriber information; a converter for converting the subscriber information into a data format for communication processing; first and second storage units for storing the subscriber information; A subscriber information protection system having a control unit for controlling communication processing and the whole based on subscriber information,
A process of sending the subscriber information in the first storage unit via the converter from the subscriber information input unit, the second storage without passing through the converter from the subscriber information input unit The process of sending the subscriber information to the department is performed in parallel,
The control unit accesses the first storage unit when performing communication processing, but does not access the second storage unit,
When the subscriber information in the first storage unit is destroyed, the communication process is interrupted, and the subscriber information in the second storage unit is sent to the first storage unit to perform the communication process. Being able to resume,
A subscriber information protection system. Claims wherein the stored in the second storage unit receives the subscriber information, and converts the data format for the communication process, characterized in that it further comprises a second converter to be sent to the first storage unit Item 10. The subscriber information protection system according to Item 1.

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