JP3011116B2 - Station data update circuit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an office data updating circuit for updating office data stored in an exchange or the like.

[0002]

2. Description of the Related Art Conventionally, some exchanges adopting stored program control have station data for managing changes and the like of respective devices connected on a network. The station data is information including a change factor in configuring the system, such as adding or removing connectable devices on the network, and by separating the station data from main system information. , Data registration and change are facilitated. For this reason, a method of performing registration and change using station data separated from the system is generally adopted.

[0003] However, since the conventional operation of updating the station data is performed manually, there is a possibility that a human error may occur due to the change operation. In order to prevent such mistakes, various changes such as the "station data collation method" disclosed in JP-A-5-122335 and the "station data management data updating method" disclosed in JP-A-4-355548 are described. A method has been proposed.

In the example disclosed in Japanese Patent Application Laid-Open No. 5-122335, when updating old station data to new station data, it is first analyzed whether the contents of the new station data are address information or data information. Then, as a result of the analysis, only when the new station data is data information, the contents of the old station data and the new station data are compared and collated, and difference information of a different portion is output. This eliminates the labor of the maintenance person who visually checks whether the output difference information is address information or data information.

In the example disclosed in Japanese Patent Application Laid-Open No. 4-355548, when the station data management data used for changing the station data is changed, new station data management data is detected from the history information of the station data management data. A station data change command that matches the station data is generated based on the new station data management data. This prevents erroneous station data from being generated when the station data is changed by the station data management data.

In general, in a network, in order to prevent the line from being disconnected due to a failure such as a system down, as shown in FIG. It is common practice to make the system redundant with the standby system 102. That is, when a failure that causes a line disconnection occurs in the currently operating act system 101, the station data unit 103 transmits the signal line 1.
The operating system is switched from the act system 101 to the standby system by switching the connection destination of the changeover switch 111 provided via the switch 21 from the signal line 122 connected to the act system 101 to the signal line 123 connected to the standby system 102. System 102, the standby system 102 is changed to the act system 101, and the switched act system 10 is
1 is used as the standby system 102. At this time, the station data unit 103 storing the station data is connected to one of the operating systems.

[0007]

However, in each of the above-mentioned conventional examples, only a method for eliminating an artificial change error in the station data or the station data management data has been proposed. No measures were taken for its own security. That is, it is not known when and when a failure such as a system down occurs. However, when changing station data, a failure such as a system down occurs while data is being written to the station data unit 103. When this occurs, the station data may be lost.

When the station data is lost, the system configuration itself cannot be formed. Therefore, as shown in FIG. 7, the office data units 203 and 20 storing the office data in the respective systems of the act system 201 and the standby system 202.
A method has been devised to prevent station data from disappearing due to a system failure or the like by disposing 4.

When the independent station data sections 203 and 204 are provided as described above, the
The station data stored in the station data section 04 must always be matched. For example, when the station data is changed in the station data section 203 of the act system 201, the station data in the station data section 204 of the standby system 202 is changed. A similar change is required for the station data. This is because it is premised that the act system 201 can be changed to the standby system 202 at any time.

In order to prevent the station data in both the act system 201 and the standby system 202 from being lost even if the power of the apparatus main body is cut off, the station data unit 2
It is necessary to use a non-volatile memory for 03 and 204. In general, since nonvolatile memory performs reading and writing in data block units, there are many types that can only guarantee data in data block units. In such a nonvolatile memory, data writing must be completed. ,
No guarantee is made on the content of the written data.

Therefore, in order to match the station data,
If a transfer error, system down, power failure, or the like occurs while the station data is being transferred from the act system 201 to the standby system 202, the transfer destination station data is not normal data. The station data of "1" and "2" become inconsistent, and there is a problem that the system construction fails along with the switching of the system.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem by changing the station data to be updated so that the station data always matches in two different systems without erasing the station data under any circumstances. An update circuit is provided.

[0013]

According to the first aspect of the present invention, (a) in the currently operating system, the station data, which is necessary information for operating each device connected to the network, is stored and held. Operating information holding means for performing
(B) first active information storage means and second active information storage means for storing station data stored in the active information storage means, and (c) when operation in the active system becomes impossible. In the standby system to be operated, standby system information holding means for storing and holding station data which is necessary information for operating each device connected on the network; and (d) stations for storing and holding in the standby system information holding means. A standby system information storage unit for storing data; (e) an information updating unit for updating the storage holding contents of the standby system information holding unit to the storage holding contents of the active system information holding unit at a predetermined timing; A comparison is made between the storage contents of the spare system information holding unit after the update by the updating unit and the contents stored in the spare system information storage unit, and when the contents are different, the storage holding contents of the spare system information holding unit are backed up.
Standby system information transfer means for transferring to the system information storage means ;
(G) When the storage content of the standby information storage means is equal to the storage content of the standby information storage means, the storage content of the active information storage means is further transferred to the active second information storage means, (1) At the start of operation, it is determined whether the contents stored in the active first information storage means are normal, and it is determined that the contents are normal. In this case, the station data updating circuit is provided with an active information copying means for copying the contents stored in the active first information storage means to the active information holding means.

In other words, according to the first aspect of the present invention, the information area for operating the station data and the information area for storing the station data are provided independently, so that the station data disappears due to a system down or the like. The station data can be matched in two different systems while preventing this.

According to the second aspect of the present invention, (a) the current operation
In the middle operation system, the operation system information holding means for storing and holding station data which is necessary information for operating each device connected on the network; and (b) the station stored and held in the operation system information holding means. a working system first information storage unit and the active system second information storage means for storing the data, (c) operation
In the standby system to operate when it becomes impossible operational in system, and a standby system information holding means for storing and holding station data which is necessary information for operating the respective devices connected to the network, (d) and a standby system first information storage unit and the standby system second information storage means for storing the station data stored and held in the standby system information holding means, at predetermined timing (e),
And information update means for updating the stored contents held in the standby system information holding means in the storage holding contents of the operational information holding means, the memory content held in the spare system in the backup information storage means after the update by (the) information updating means comparing the contents stored in the second information storage unit, if the contents are different, and a standby system first information transfer means for transferring the stored contents held in the backup information storage means to the backup system second information storage means, (g ) is compared with the contents stored in the backup memory holding contents and a standby system first information storage unit of the standby second information storing means after transferring by the first information transfer means, if the contents are different, the spare system second and a standby system second information transfer means for transferring the stored contents held information storage means to the backup system first information storage unit, (viii) a first information storage means and backup system storing the contents held in the backup information storage means and a standby system Each storage content of the second information storage means If is equal, the operation system information transfer means for transferring the contents stored in the operation system information storage operation system second information storage unit, the order of the active first information storage means,
(I) At the start of operation, it is determined whether or not the storage content of the active first information storage means is normal. If it is determined that the storage content is normal, the storage content of the active first information storage means is stored in the active first information storage means. Bureau data and operation system information copying means for copying the information holding means
Data updating circuit.

That is, according to the second aspect of the present invention, the information area for operating the station data and the information area for storing the station data are provided independently, and the information area for storing the station data is further provided. Is provided, it is possible to prevent the station data from disappearing due to a system failure or the like, and to match the station data in two different systems.

According to a third aspect of the present invention, in the station data updating circuit, in addition to the first or second aspect, the information updating means includes:
The update timing is set at regular intervals and when the operating system is changed from the active system to the standby system. As a result, in two different systems, it is possible to always maintain a state in which the station data matches.

In the station data updating circuit according to a fourth aspect, in addition to the first, second or third aspect of the invention, the information storage means in the active system and the standby system is constituted by a nonvolatile memory. As a result, even when the power supply is cut off due to the cutoff of the power supply of the apparatus or the like, the station data can be reliably stored without being lost.

[0019] In the station data updating circuit according to claim 5, in addition to the fourth aspect of the present invention, the operation system information transfer means, luck
If the data stored in the service first information storage means is determined data, the storage content is determined to be normal, while if the stored data is indeterminate data, the storage content is determined to be abnormal. to decide. In other words, many non-volatile memories guarantee only information for each data block, and when writing is not performed correctly, uncertain data is stored. Therefore, it is easy to determine whether the stored contents are normal. You can judge.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on one illustrated embodiment.

FIG. 1 shows a main configuration of a station data updating circuit in this embodiment. In FIG. 1, the station data updating circuit 1 is roughly divided into an operating system and a standby system, and the control units 11 and 21 and the information holding unit 12 and
22, information storage units 13 and 23, and transmission units 14 and 24
And receiving units 15 and 25. Then, the control units 11 and 21, the information holding units 12 and 22, and the information storage unit 1
3, 23, transmitting sections 14, 24, and receiving sections 15, 25 are connected to the system bus 5 via signal lines 51-57, 61-67.
0, 60 are connected.

The control units 11 and 21 include a CPU (Central Pr
ocessing Unit) 31, 41, ROM (Read Only Memo)
ry) 32, 42, RAM (Random Access Memory) 3
3 and 43, which are control blocks in the station data updating circuit 1. Further, the control units 11 and 21 function as an information updating unit that updates the storage content of the information storage unit 22 with the storage content of the information storage unit 12, and the storage unit 23 stores the content of the information storage unit 22 in the information storage unit 23. Functioning as a preliminary information transfer unit (a standby first information transfer unit and a standby second information transfer unit), and an operation information transfer unit that transfers the storage content of the information storage unit 12 to the information storage unit 13 It has a function as a means and each function of an active information copying means for copying the stored content to the information holding unit 12 when the content stored in the information storage unit 13 is normal at the start of operation.

The information holding units 12 and 22 are for storing and holding station data necessary for operating the respective devices connected on the network. Memory. The information holding unit 12 has a function as an active information holding unit, and the information holding unit 22 has a function as a standby information holding unit. Information storage unit 13, 2
Reference numeral 3 denotes a station for storing station data. In order to prevent the station data from being lost due to a power failure of the apparatus, etc.
M (Erasable Programmable Read Only Memory) and EE
PROM (Electrically Erasable Programmable Read)
Only Memory).

FIG. 2 shows a storage area in the information storage unit. As shown in the figure, the information storage unit 13 includes a first storage area 13a serving as an active first information storage means and a second storage area 13b serving as an active second information storage means. The storage unit 23 includes a first storage area 23a serving as standby first information storage means and a second storage area 23b serving as standby second information storage means.

The transmitting units 14 and 24 are connected to the signal lines 71 or 7
2 for transmitting the station data stored or held in the information holding units 12 and 22 or the information storage units 13 and 23 to the receiving units 25 and 15 of the partner system. Reference numerals 15 and 25 denote transmission units 14 and 2 of the partner system.
4 to receive station data transmitted via the signal line 72 or 71.

Next, an example of the operation of the station data updating circuit in the above embodiment will be described with reference to FIGS.

FIGS. 3 and 4 are diagrams for explaining the operation procedure of the station data updating circuit of this embodiment. In addition,
In the following description, the station data updating circuit 1
This switch is provided in an exchange, and has two independent systems so that when a failure such as a system failure occurs in the operation system, the protection system immediately starts up and this protection system changes to the operation system. And

The control unit 11 in the active system always checks whether or not a failure has occurred (step S101). If there is no failure (step S101; N), the processing in step S101 is executed at regular time intervals to determine whether or not a failure has occurred. Check.
Further, when a failure such as a system down is detected in the determination processing of step S101 (step S101;
Y), the control unit 11 immediately passes the station data in the information holding unit 12 to the transmitting unit 14 via the signal line 54, the system bus 50, and the signal line 56, and transmits the data from the signal line 71 to the receiving unit 25 ( Step S102).

When the control section 21 receives the station data in the receiving section 25, the control section 21 stores and holds the received station data in the information holding section 22 via the signal line 67, the system bus 60, and the signal line 64 (step S103). . At this time, since the information holding unit 22 is configured by a high-speed memory such as a RAM, the station data written to the information holding unit 22 is:
The data is guaranteed at the time of writing. Next, it is confirmed whether or not the reception of the station data has been completed (step S1).
04), if the reception has not been completed (step S10)
4; N), repeat the processing from step S102.

On the other hand, in the judgment processing of step S104, when the reception is completed (step S104; Y), the second storage area 23b in the information holding unit 22 and the information storage unit 23
Is compared with the contents stored and stored in the step S10 to confirm whether or not the contents of the station data match (step S10).
5). In the determination processing in step S105, when the contents of the station data do not match (step S105;
N), the contents of the information storage unit 22 are transferred to the second storage area 23b in the information storage unit 23 (Step S106). In the determination process of step S105, when the contents of the station data match (step S105; Y), the process of step S106 is skipped.

Then, the contents stored in the first storage area 23a and the second storage area 23b in the information storage unit 23 are compared to confirm whether or not the contents of the station data match (step S107). In the determination processing of step S107, if the contents of the station data do not match (step S107; N), the first storage area 23 in the information storage unit 23
a to the content of the second storage area 23b (step S
108). In the determination processing of step S107, when the contents of the station data match (step S1).
07; Y), the process of step S108 is skipped.

The information holding unit 22 and the first of the information storage unit 23
When all the contents of the storage area 23a and the second storage area 23b match, the contents stored or held in the information storage unit 12 and the second storage area 13b in the information storage unit 13 are compared. It is confirmed whether or not the contents of the station data match (step S109). This step S109
If the contents of the station data do not match (step S109; N), the contents of the information storage unit 12 are transferred to the second storage area 13b in the information storage unit 13 (step S110). In the determination process of step S109, when the contents of the station data match (step S109; Y), the process of step S110 is skipped.

Next, the contents stored in the first storage area 13a and the second storage area 13b in the information storage section 13 are compared to confirm whether or not the contents of the station data match (step S111). In the determination processing of step S111, if the contents of the station data do not match (step S111; N), the first storage area 13 in the information storage unit 13
a of the second storage area 13b (step S
112). In the determination processing of step S111, when the contents of the station data match (step S1).
11; Y), the process of step S112 is skipped.
Then, when the transfer of the station data to the first storage area 13a of the information storage unit 13 is completed, the processing ends.

FIG. 5 is a diagram for explaining a processing procedure when the power of the station data updating circuit of this embodiment is turned on or when the reset operation is restarted. First, when the power is turned on or the operation is restarted by resetting (step S201), it is confirmed whether or not station data is stored in the first storage area 13a in the information storage unit 13 (step S202). In the determination processing of step S202, when the storage of the station data is confirmed (step S202; Y), it is confirmed whether or not the stored station data is normal data (step S2).
03). This is because the non-volatile memory generally performs erasing or writing in units of data blocks, so that data that has a failure during writing is indefinite data. A determination is made as to whether the nonvolatile memory is normal or not by making use of such unique features of the nonvolatile memory.

If it is determined in the determination process of step S203 that the written station data is normal (step S203; Y), the station data stored in the first storage area 13a of the information storage unit 13 is retained. It is copied to the unit 12 and the actual operation is performed (step S204). on the other hand,
In the determination processing of step S202 or step S203, there is no station data (step S202;
N), if the station data is not normal (step S
203; N), it is determined whether or not station data is stored in the second storage area 13b of the information storage unit 13 (step S).
205), in the determination process of step S205,
When the storage of the station data is confirmed (step S205;
Y) Further, it is confirmed whether or not the stored station data is normal data (step S206).

If it is determined in the determination processing of step S206 that the written station data is normal (step S206; Y), the station data stored in the second storage area 13b of the information storage unit 13 is deleted. Information storage unit 1
2 and perform the actual operation (step S207).
On the other hand, in the determination processing of step S205 or S206, there is no station data (step S20).
5; N), if the station data is not normal (step S206; N), an error process is executed (step S206).
208).

However, in this embodiment, after the writing to the second storage area 13b is completed in the information storage unit 13,
The station data is configured to be written in the first storage area 13a. If the station data is contained in this area and it can be determined that the station data is normal, the station data is the old station data written in the past, Or, it is one of the new station data already written. Therefore, the first storage area 13
Since normal station data is always stored in a or the second storage area 13b, the error processing in step S208 is exceptional.

As described above, in this embodiment, even when the system goes down during the update of the station data, at least one station data whose normality is guaranteed exists in each system and the station being updated Since the data is not read but is read from the information storage unit 13 where the normality is guaranteed as the station data, the old station data can be smoothly updated to the new station data. In addition, a system that secures a memory area that matches the characteristics of the memory and that only defines the write and read procedures without losing station data without using a special configuration in terms of its circuit configuration. Can be.

In the above-described embodiment, the case where the number of storage areas in the information storage unit is 2 has been described, but this number can be set arbitrarily.

[0040]

As is apparent from the above description, according to the first aspect of the present invention, the information area for operating the station data and the information area for storing the station data are provided independently. Station data can be matched in two different systems while preventing loss of station data due to a system down or the like.

According to the second aspect of the present invention, an information area for operating station data and an information area for storing station data are independently provided, and a plurality of information areas for storing station data are provided. With this arrangement, it is possible to prevent station data from disappearing as compared with the first aspect of the present invention.

According to the third aspect of the present invention, at regular intervals,
When changing the operating system from the active system to the standby system,
By setting the information update timing, it is possible to always maintain a state in which the station data matches in two different systems.

According to the fourth aspect of the present invention, the information storage means in the active system and the standby system is constituted by a non-volatile memory, so that the station data is lost even when the power supply is cut off due to the power cut off of the apparatus. Without having to do so.

According to the fifth aspect of the present invention, when the data stored in the active information storage means or the active first information storage means is determined data, it is determined that the storage content is normal, and the stored content is stored. If the stored data is indeterminate data, by determining that the stored content is not normal, it is possible to easily determine whether the stored content is normal.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a main configuration of a station data updating circuit according to an embodiment.

FIG. 2 is a diagram showing a storage area in an information storage unit shown in FIG.

FIG. 3 is a diagram for explaining an operation procedure of the station data updating circuit of the embodiment.

FIG. 4 is a diagram, subsequent to FIG. 3, for explaining the operation procedure of the station data updating circuit of the present embodiment.

FIG. 5 is a diagram for explaining a processing procedure at the time of turning on the power or restarting the reset operation of the station data updating circuit of the present embodiment.

FIG. 6 is a diagram illustrating an example for explaining a method of using station data.

FIG. 7 is a diagram showing another example for explaining a method of using station data.

[Explanation of symbols]

1 station data update circuit 11, 21 control unit (information update means, information transfer means,
12 information storage unit (active information storage unit) 13 information storage unit (active information storage unit) 14, 24 transmission unit 15, 25 reception unit 22 information storage unit (standby information storage unit) 23 information storage Unit (spare system information storage means) 50, 60 System bus 51-57 Signal line (operating system) 61-67 Signal line (spare system) 71, 72 Signal line

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mariko Mori 5-7-1 Shiba, Minato-ku, Tokyo Inside NEC Corporation (72) Inventor Masatoshi Mizobe 5-7-1 Shiba, Minato-ku, Tokyo Japan Electricity Co., Ltd. (72) Inventor Hiromi Atsuta 5-7-1 Shiba, Minato-ku, Tokyo NEC Corporation (72) Inventor ▲ Yoshi ▼ Chizuko 5-7-1, Shiba, Minato-ku, Tokyo NEC (56) References JP-A-7-226962 (JP, A) JP-A-6-303658 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04M 3/00 H04M 3/16-3/20 H04M 3/38-3/40 H04Q 3/54-3/56

Claims (5)

(57) [Claims] An operating system information holding means for storing and holding station data, which is necessary information for operating each device connected on a network, in an operating system currently operating, and an operating system information holding means. The active first information storing means and the active second information storing means for storing the held station data, and the standby system operated when the operation in the active system is disabled, each of which is connected to the network. Standby system information holding means for storing and holding station data that is necessary information for operating the device; standby system information storage means for storing station data stored and held in the standby system information holding means; An information updating means for updating the storage contents of the standby information holding means to the storage contents of the active information holding means; and an information updating means for updating the standby information holding means after the updating by the information updating means. And comparing the stored contents in the backup information storage means,
When the contents are different, the standby system information transfer unit that transfers the storage contents of the standby system information storage unit to the standby system information storage unit; the storage contents of the standby system information storage unit and the storage contents of the standby system information storage unit If the values are equal to each other, further, the active information transfer means for transferring the storage contents of the active information holding means in the order of the active second information storage means and the active first information storage means; It is determined whether or not the contents stored in the first information storage means are normal. If it is determined that the contents are normal, the active system copies the contents stored in the active first information storage means to the active system information holding means. An office data updating circuit comprising: information copying means. 2. An operating system information holding means for storing and holding station data, which is necessary information for operating each device connected on the network, in an operating system currently in operation, and an operating system information holding means. The active first information storing means and the active second information storing means for storing the held station data, and the standby system operated when the operation in the active system is disabled, each of which is connected to the network. Standby system information holding means for storing and holding station data which is necessary information for operating the apparatus; standby system first information storage means for storing station data stored and held in the standby system information holding means; Information storage means, information update means for updating the storage content of the standby information storage means to the storage content of the active information storage means at a predetermined timing, and after updating by the information update means. Comparing the stored contents of the memory holding contents and a standby system second information storage unit of the standby information storing unit, if the contents are different, the memory content held in the backup information storage means to the backup system second information storage unit A preliminary first information transfer unit for transferring, and the second preliminary information after transfer by the first preliminary information transfer unit
The storage contents of the storage means are compared with the storage contents of the standby first information storage means. If the contents are different, the storage contents of the standby second information storage means are replaced with the standby first information storage means. When the storage contents of the standby system second information transfer unit and the storage contents of the standby system information holding unit and the respective storage contents of the standby system first information storage unit and the standby system second information storage unit are equal. Operating information transfer means for transferring the contents stored in the active information holding means in the order of the active second information storing means and the active first information storing means, and the storage contents of the active first information storing means at the start of operation Is determined whether or not is normal, and when it is determined to be normal, there is provided active information copying means for copying the storage contents of the active first information storage means to the active information holding means. Characteristic station data update circuit. 3. The station data updating method according to claim 1, wherein said information updating means sets the update timing at regular intervals and when the operating system is changed from the operating system to the standby system. circuit. 4. The station data updating circuit according to claim 1, wherein the information storage means in the active system and the standby system is constituted by a nonvolatile memory. 5. The operating system information transfer means, wherein the operating system first
If the data stored in the information storage means is determined data, it is determined that the storage content is normal, while if the stored data is indeterminate data, the storage content is determined to be abnormal. 5. The station data updating circuit according to claim 4, wherein: