JP2002152381A - Optical communication network database constructing method and optical communication network disaster- stricken condition grasping method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical communication network database constructing method and an optical communication network disaster-stricken condition grasping method in which a test of an optical cable required for grasping a disaster-stricken condition of an optical communication network is carried out with high precision. SOLUTION: This method executes a process of accumulating facilities data of an optical cable 1 in a facilities information database 6 whenever a laying construction and a facilities change construction of the optical cable 1 may be carried out in telephone stations A and B; a process of recording the facilities data which has been once accumulated in the facilities information database 6 in a record medium 15; a process of testing in each optical cable 1 based on the facilities data supplied from the record medium 15 which has recorded the facilities data obtained by the above processes to a transportable optical cable tester 12, to record the corresponding test results data in the record medium 15; and a process of taking the test results data recorded in the record medium 15 in a database system 14, so that a distribution of a communication disaster-stricken area shown by the test results data is visually displayed on a map referring to a map database 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical communication network database construction method and an optical communication network damage situation grasping method, and more particularly, to prepare in advance for grasping the damage situation of an optical communication network when a disaster occurs. Optical communication network database construction method for constructing optical communication network database, and optical communication network damage situation grasping method for grasping damage situation of optical communication network by actually using optical communication network database constructed by the method Related to

[Prior art]

2. Description of the Related Art Conventionally, in the case of a severe disaster such as a large earthquake, a method for grasping the state of damage to an optical communication network which has been regarded as important as a communication infrastructure equipment is a remote fiber testing system (RFTS).
Optical pulse tester (OTDR: Optica)
l There is a method using a Time Domain Reflectometer) and a method using a portable optical cable tester.

[0003] Each of these methods will be briefly described below with reference to the drawings.

FIG. 7 is a configuration diagram of an application system for explaining a conventional optical communication network damage situation grasping method to which a remote optical fiber test system is applied, and FIG. 8 is a conventional optical communication network using an optical pulse tester. FIG. 9 is a configuration diagram of an applied system for explaining a method of grasping a damage situation, and FIG. 9 is a configuration diagram of an application system for describing a conventional method of grasping a damage situation of an optical communication network using a portable optical cable tester (common to each figure). The same reference numerals are given to the constituent elements that are described).

First, as shown in FIG. 7, when the remote optical fiber test system α is applied to grasp the damage situation of an optical communication network, a plurality of telephone stations A, B,. A and B), a test apparatus 4 for RFTS connected to a plurality of optical fibers 2 included in an optical cable 1 constituting an optical communication network via an optical switch 3 is constantly installed. .

In a central maintenance center 5 which supervises each of the telephone stations A and B, an equipment information database 6 for storing the equipment data of the optical cable 1 and a map database 7 for storing map data on the area where the optical communication network is installed. And R such as a computer that accesses these databases 6 and 7
An FTS center device 8 is installed, and the RFTS test device 4 in each of the telephone stations A and B and the RFTS center device 8 in the central maintenance center 5 are connected via a network 9 to provide a system. Perform the configuration.

[0007] In order to grasp the damage situation of the optical communication network by the remote optical fiber test system α, first, the RFTS center device 8 in the central maintenance center 5 transmits each of the telephone stations A and B via the network 9. Various instructions are given to the RFTS test device 4 in the inside, and then the RFTS test device 4 performs various tests based on the instructions given from the RFTS center device 8 and further obtains the results. The test result data obtained is referred to online in the RFTS center device 8.

The remote optical fiber test system α
Is generally limited to large-scale telephone stations A and B in which a large number of optical fibers 1 are laid, and is compared with a method using an optical pulse tester or a portable optical cable tester described later. Is the most efficient method.

Next, as shown in FIG. 8, when the optical pulse tester 10 is used for grasping a required disaster situation, the optical pulse tester 10 is first sent from the central maintenance center 5 to each telephone station A. , B by hand, and the optical pulse tester 10 is connected to a plurality of optical fibers 2 constituting the optical cable 1 one core at a time, and the test is sequentially performed. The result data is output to various forms 11 and is reflected in the equipment information database 6 and the map database 7 in the central maintenance center 5.

The method using the optical pulse tester 10 is generally applied to small telephone stations A and B in which the remote optical fiber test system α cannot be introduced.

On the other hand, as shown in FIG. 9, when the portable optical cable tester 12 is used for grasping the state of the disaster, the portable optical cable tester 12 is used in the same manner as the optical pulse tester 10 described above. First, they are manually carried into the telephone stations A and B from the central maintenance center 5.

Next, the portable optical cable tester 12
Is connected to a terminating frame 13 terminating the plurality of optical fibers 2 included in the optical cable 1, and a test is performed. Further, the test result data obtained by this is connected to the optical pulse tester 10. In the same manner as in the case described above, various forms 11 are output, and this is reflected on the equipment information database 6 and the map database 7 in the central maintenance center 5.

The method using the portable optical cable tester 12 is also applied to small telephone stations A and B in which the remote optical fiber test system α cannot be introduced.

[0014]

As described above, when grasping the damage situation of the optical communication network, an appropriate method considering the forms of the telephone stations A and B can be adopted. Each method has the following problems.

That is, in the method using the most efficient remote optical fiber test system α among the above methods,
Since it is assumed that the RFTS test apparatus 4 is regularly installed in the telephone stations A and B, the RFTS test apparatus 4 cannot be transferred to another telephone station that needs to perform the work for grasping the damage. In addition, since it is assumed that the network 9 exists, there is no guarantee that the network 9 can be operated in the event of a severe disaster.

In addition, in the method to which the remote optical fiber test system α is applied, the optical cable 1 in the telephone offices A and B is used.
Since it is not possible to input and correct the equipment data while checking the actual equipment status, if the updating of the equipment data in the central maintenance center 5 is neglected, it becomes impossible to perform a highly accurate test.

On the other hand, in the method using the optical pulse tester 10 or the portable optical cable tester 12, it is not only necessary to manually input the equipment data of the optical cable 1 to be tested every time or as needed. Since a mechanism for centrally managing equipment data, map data, and test result data is not considered at all, the efficiency is extremely low.

In particular, in the method using the optical pulse tester 10, when testing a required optical cable 1, the optical pulse tester 10 is connected to a plurality of optical fibers 2 one core at a time. Because of the necessity, when the optical fibers 1 are present in large quantities, they cannot be tested quickly.

Among the above methods, the remote optical fiber test system α has only a function of centrally managing the above data and displaying information on the communication-affected area on a map. , Its function is only to display the position of the damage point (break point) of the optical cable 1,
In the future, it is desired to display detailed and specific information on the communication-affected areas.

Here, the main objects to be solved by the present invention are as follows.

That is, a first object of the present invention is to provide a method for constructing an optical communication network database capable of performing an optical cable test required for grasping the state of damage to an optical communication network with high accuracy, and an optical communication network damage. It does not provide a method for grasping the situation.

A second object of the present invention is to provide a method for constructing an optical communication network database and a method for grasping the state of damage to an optical communication network, which can quickly and efficiently test a required optical cable.

A third object of the present invention is to provide an optical communication network database construction method and an optical communication network damage situation grasping method capable of displaying information on a communication-affected area in a detailed and concrete manner. is there.

Other objects of the present invention will become apparent from the description of the specification, the drawings, and particularly the description of the claims.

[0025]

According to the present invention, there is provided a database construction method comprising the steps of: storing optical fiber equipment data in an equipment information database each time optical cable laying work or equipment change work is performed in a telephone station; And recording the facility data once stored in the recording medium.

On the other hand, the method for grasping the damage status of the present invention is as follows.
At the central office that is in charge of the optical communication network in which the disaster is expected, at each optical cable based on the equipment data given to the optical cable tester from the recording medium on which the equipment data obtained by the optical communication network database construction method is recorded. The process of conducting a test and recording the test result data on the recording medium accompanying the test, taking the test result data recorded on the recording medium into an optical communication network database, and distributing the distribution of the communication affected area indicated by the test result data. And visually displaying on a map with reference to a map information database.

More specifically, in solving the problem, the present invention achieves the above object by adopting the following novel characteristic configuration method.

That is, a first feature of the construction method of the present invention is that an optical communication network for constructing an optical communication network database comprising at least an equipment information database for storing equipment data of optical cables constituting an optical communication network. A network database construction method, comprising: classifying the facility data for each optical cable and storing the facility data in the facility information database each time the optical cable laying work and facility changing work are performed at a telephone station; Recording the equipment data once stored in a database on a recording medium readable and writable by any optical cable tester for testing the optical cable. Configuration adoption.

According to a second feature of the construction method of the present invention, the step of recording the facility data in the recording medium according to the first feature of the construction method of the present invention depends on the frequency of the optical cable laying work and the facility changing work. The present invention lies in the adoption of a configuration of an optical communication network database construction method that is repeatedly executed at regular intervals.

A third feature of the construction method of the present invention is that the step of recording the facility data in the first or second feature of the construction method of the present invention on the recording medium includes a plurality of optical fibers constituting the optical cable. The present invention resides in the adoption of a configuration of an optical communication network database construction method including a step of setting data representing a representative optical fiber therein.

A fourth feature of the construction method of the present invention resides in that the telephone station according to the first, second or third feature of the construction method of the present invention is configured such that the recording is performed each time it becomes necessary to test the optical cable. Performing a process of comparing the equipment data provided from the medium to the optical cable tester with the actual equipment status of the optical cable at the central office; and as a result of the comparison, the optical data tester The present invention is to adopt a configuration of an optical communication network database construction method that executes a process of updating the facility data when the status does not match the facility status.

A fifth feature of the construction method of the present invention is that, in the fourth feature of the construction method of the present invention, the step of comparing the facility data with the facility status is performed by a worker located at the central office. In the optical communication network database construction method.

A sixth feature of the construction method of the present invention is that the step of updating the facility data in the optical cable tester in the fourth or fifth feature of the construction method of the present invention is performed by the updated facility. Re-recording the data on the recording medium through the optical cable tester,
It lies in the adoption of the configuration of the optical communication network database construction method.

According to a seventh aspect of the construction method of the present invention, the step of storing the facility data in the facility information database in the sixth aspect of the construction method of the present invention includes the step of storing the updated facility data through the optical cable tester. The present invention resides in adopting a configuration of an optical communication network database construction method including a step of further accumulating the updated facility data newly obtained in a process of recording on a recording medium.

On the other hand, the first feature of the grasping method of the present invention is that, at least, an equipment information database for storing equipment data of optical cables constituting an optical communication network and map data for an area where the optical communication network is installed. An optical communication network damage situation grasping method for grasping a damage situation of the optical communication network at the time of occurrence of a disaster, based on an optical communication network database comprising a map information database. Alternatively, the optical cable test is performed by transferring the recording medium on which the facility data obtained by the optical communication network database construction method according to the second aspect is recorded to the telephone station having jurisdiction over the optical communication network in which a disaster is expected. And carrying out a test for each optical cable based on the equipment data given to the optical cable tester from the recording medium, A process of classifying the test result data accompanying the optical cable for each optical cable and recording the classified data on the recording medium; and loading the test result data recorded on the recording medium into the optical communication network database, and indicated by the test result data. And a process of visually displaying the distribution of the communication-affected areas on a map with reference to the map information database.

A second feature of the grasping method of the present invention is that at least a facility information database for storing facility data of optical cables constituting an optical communication network, and map information for storing map data on an area where the optical communication network is installed. An optical communication network damage situation grasping method for grasping the damage situation of the optical communication network at the time of occurrence of a disaster based on an optical communication network database comprising a database and a third feature of the construction method Transporting the recording medium on which the facility data obtained by the optical communication network database construction method according to the above is recorded, together with the optical cable tester, to the telephone station that is in charge of the optical communication network where damage is expected. When,
A test is performed for each of the representative optical fibers in the optical cable based on the equipment data given to the optical cable tester from the recording medium, and the test result data accompanying the test is classified for each optical cable and recorded on the recording medium. The process and the test result data recorded on the recording medium are taken into the optical communication network database, and the distribution of the communication affected area indicated by the test result data is schematically shown on a map with reference to the map information database. And the step of sequentially displaying the information in the optical communication network.

A third feature of the grasping method of the present invention is that the step of recording the test result data on the recording medium in the above-described second feature of the grasping method of the present invention is performed by a predetermined process which is determined to be abnormal by the test result data. Performing a test on all the optical fibers constituting the optical cable of the present invention, including a step of classifying test result data associated with the optical cable and recording the same again on the recording medium, and a step of displaying the distribution of the communication-affected areas. Capturing the test result data recorded again on the recording medium into the optical communication network database, and distributing the communication affected area indicated by the test result data,
An aspect of the present invention is to adopt a configuration of a method for grasping a state of damage to an optical communication network, which includes a step of displaying in detail on a map with reference to the map information database.

A fourth feature of the grasping method of the present invention is that, in the above-described third feature of the grasping method of the present invention, the step of displaying the distribution of the communication-affected areas involves color-coded display according to the scale of the damage rate. In other words, the configuration of the method for grasping the damage status of the optical communication network is adopted.

A fifth feature of the present invention grasping method is that, in the third or fourth feature of the present invention grasping method, the step of displaying the distribution of the communication-affected area is performed by color-coded display according to the scale of the number of affected users. The configuration adoption of a method for grasping the state of damage to an optical communication network, which is accompanied by

A sixth feature of the grasping method of the present invention is that, in the third, fourth, or fifth feature of the grasping method of the present invention, the step of displaying the distribution of the communication-affected area includes displaying a damaged point and a damaged route. The configuration adoption of a method for grasping the state of damage to an optical communication network, which is accompanied by

A seventh feature of the grasping method of the present invention is that the test result data in the first, second, third, fourth, fifth or sixth feature of the grasping method of the present invention is recorded on the recording medium. Prior to testing the optical cable, comparing the equipment data provided to the optical cable tester from the recording medium with the actual equipment status of the optical cable at the central office, and the result of this comparison. And updating the equipment data in the optical cable tester when the equipment data does not match the equipment status.

According to an eighth feature of the present invention, the process of comparing the facility data and the facility status in the seventh feature of the present invention is performed by a worker located at the central office. In the method for grasping the state of damage to the optical communication network.

[0043]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

First, FIG. 1 is a configuration diagram of an applied system for explaining a method for grasping the state of damage to an optical communication network according to an embodiment of the present invention (of the components shown in FIG. 1).
The same components as those in the conventional drawings are denoted by the same reference numerals, and redundant description will be omitted.)

As shown in the figure, the application system configuration of the optical communication network damage situation grasping method according to this embodiment is basically the same as that of the conventional optical communication network damage situation grasping method shown in FIG. However, in this example, first, the database system 14 set in the central maintenance center 5
In the FD, the equipment data of the optical cable 1 is recorded.
(A floppy (registered trademark) disk) or the like, and a portable optical cable tester 12 is provided to telephone stations A and B which are in charge of an optical communication network in which damage is expected.
And carry it in manually.

Next, the portable optical cable tester 12
Is connected to a terminating frame 13 that terminates a plurality of optical fibers 2, a test is performed for each optical cable 1, and the test result data obtained by this is classified for each optical cable 1 and the recording medium 15 is classified. After that, the data is taken into the equipment information database 6 and the map database (map information database) 7 constituting the optical communication network database in the present embodiment in the central maintenance center 5, and the communication damage indicated by the test result data is recorded. The distribution of the area is visually displayed on a map with reference to the map database 7.

Here, a method of preparing the recording medium 15 in the database system 14, that is, a method of constructing an optical communication network database will be described with reference to the drawings.

FIG. 2 is a flowchart for explaining the optical communication network database construction method according to one embodiment of the present invention.

As shown in the figure, in the method for constructing an optical communication network database according to this embodiment, first, an operator (not shown) arranged at the telephone stations A and B requires While laying and changing equipment (ST1),
An operator arranged at the central maintenance center 5 inputs equipment information associated with the laying work and the equipment changing work of the optical cable 1 into the database system 14 (ST
2) In the database system 14, the equipment data of the optical cable 1 is stored in the equipment information database 6 (ST3), whereby the required process is started.

Here, the facility change work of the optical cable 1 referred to here means, for example, that the optical communication network user (not shown) starts / stops the service, and a required portion of the termination frame 13 is optically connected. General work to partially change the equipment status of the optical cable 1 after the installation work of the optical cable 1, such as installation / removal of an article such as a coupler module (not shown) (that is, general work involving change of equipment data). Is meant.

Next, the worker in the central maintenance center 5 checks the stored equipment data (ST
4) Instruct the database system 14 to extract the equipment data (ST5), whereby the database system 14 extracts and displays the corresponding equipment data (ST6).

Next, the operator in the central maintenance center 5 confirms and edits the corresponding equipment data that has been extracted and displayed (ST7), and sets a representative optical fiber (ST7).
8) As a result, in the central maintenance center 5, an equipment data file (not shown) is created (ST)
9), the facility data file is stored in the recording medium 15 (ST10).

Then, the workers in the central maintenance center 5
The contents of the equipment data stored in the recording medium 15 are confirmed and stored (ST11), and every time a predetermined period comes (for example, every week), the above-described steps after ST5 are executed again. Then, the contents of the recording medium 15 are periodically updated irrespective of the frequency of the installation work of the optical cable 1 and the equipment change work in the telephone stations A and B (ST12).

Subsequently, the recording medium 1 obtained as described above
The method of applying No. 5 to the test of the optical cable 1, that is, the method of grasping the damage situation of the optical communication network will be described with reference to the drawings.

FIGS. 3 to 6 are flowcharts (first to fourth) for explaining a method for grasping the state of damage to an optical communication network according to an embodiment of the present invention.

First, as shown in FIG. 3, the worker in the central maintenance center 5 collects information on the telephone stations A and B, which are expected to be affected by the occurrence of the disaster (ST21). (ST22).

At this time, the worker in the central maintenance center 5 prepares the disaster situation grasping plan, and
The number of available portable optical cable testers 12 is checked, and if there is a shortage, a request is made to a central maintenance center or the like in another area for lending.

Further, if there is a shortage in the equipment data already recorded on the recording medium 15 (ST23), the worker in the central maintenance center 5 will The first equipment data is created or updated immediately (ST24).

Next, the worker in the central maintenance center 5 transports and carries the procured portable optical cable tester 12 and the recording medium 15 on which the latest equipment data is recorded to the telephone stations A and B (ST25). The workers in the telephone stations A and B set the portable optical cable tester 12 carried in a required form (ST26) and start the actual operation (ST26).
27).

Here, the above portable optical cable tester 1
2, the portable optical cable tester 12
, The existing data is once read from a built-in storage device (not shown), and a confirmation display as to whether or not to apply the existing data is presented to the workers in the telephone stations A and B ( ST28).

Accordingly, when the workers in the telephone stations A and B select existing data or new data (ST29), when the existing data is selected, the target equipment data is transferred from the above-mentioned storage device to the portable optical cable. When the data is read by the tester 12 and new data is selected, target facility data is read from the recording medium 15 (ST30).

Next, the workers in the telephone stations A and B set the test conditions for the optical fiber 1, that is, whether to grasp the outline of the damage situation or to grasp the details (S).
T31) Accordingly, in the portable optical cable tester 12, equipment data that matches the set test conditions is extracted (ST32).

Then, the workers in the telephone stations A and B visually check the actual equipment status (actual equipment) of the optical cable 1, and the actual equipment does not match the extracted equipment data. In such a case, the facility data is updated in the optical cable tester 12 so that the two are matched (ST3).
3).

Next, as shown in FIG. 4, when the actual equipment and the equipment data are matched, the test environment is expanded to the equipment data in the portable optical cable tester 12 (S
T34) Accordingly, when the workers in the telephone stations A and B instruct to start the test of the optical cable 1 (ST35), the portable optical cable tester 12 determines the test parameters from the equipment data (ST36). A pulse test is performed on the optical cable 1 (ST37), and the quality is automatically determined (ST38), and the test result is displayed on a screen and stored in a storage device (ST3).
9).

When the setting of the test conditions in the process of ST31 is ascertained as a summary, the above series of processes is performed only for the representative optical fibers of all the existing optical cables 1, and this is a detailed ascertainment. In this case, the process is repeated for all of the plurality of optical fibers 2 constituting the corresponding optical cable 1 (ST40).

Next, when all the above-mentioned repetition processes are completed, a result list screen is displayed on the portable optical cable tester 12 (ST41), and accordingly, the telephone stations A and B are connected.
The worker inside the terminal checks the test result (ST42), and determines whether to end the test of the required optical cable 1 or to perform a retest (ST43).

Here, when the operators in the telephone offices A and B instruct to carry out the retest, the portable optical cable tester 12
In step ST44, the operator confirms the details and manually sets the test parameters (ST45). In the portable optical cable tester 12, the setting values of the parameters are displayed. Accordingly, a pulse test is performed again (ST46).

Next, as shown in FIG. 5, following the above-described pulse test, the portable optical cable tester 12 performs automatic pass / fail judgment (ST47), displays the test result on the screen and stores it in a storage device (ST48), Result list screen display (S
T49) is sequentially performed, and this display is used to confirm the test results to the operators of the telephone stations A and B (ST50).

Next, when the workers at the telephone stations A and B confirm the above test results or instruct the end of the test in the process of ST43, the workers record the test results as data. To create a new recording medium 15 (test result file) (ST51).

Accordingly, the portable optical cable tester 12
In, the corresponding test result data is read (ST52), and the data capacity is calculated (ST5).
3) If the capacity does not exceed the allowable value, the test result data is written to the recording medium 15 (ST5).
4).

Then, with the above, the operators of the telephone stations A and B confirm that the test result data has been written (ST55),
It is determined whether the portable optical cable tester 12 is completely removed or partly removed (ST56).

Here, when the operators at the telephone offices A and B instruct to remove the portable optical cable tester 12 partially,
The worker copies the test result data to the remaining portable optical cable tester 12 (ST57).

Next, as shown in FIG. 6, when the operators of the telephone offices A and B instruct the portable optical cable tester 12 to be partially removed, the corresponding portable optical cable tester 12 is removed. Is removed (ST58), and when it is instructed to completely remove it, all portable optical cable testers 12 are removed (ST59).

Next, with the removal of the portable optical cable tester 12 described above, the operators of the telephone stations A and B perform central maintenance of the recording medium 15 on which the test result data is recorded and the portable optical cable tester 12. Transport to the center 5 (ST6
0).

Next, the optical cable 1 at the telephone offices A and B is used.
With the end of the test, the database system 14 reads the test result data from the recording medium 15 (ST
61), the damage status is totaled (ST62), and the optical fiber cable 1 is referred to by referring to the map database 7.
Is displayed on a two-dimensional screen with color-coded displays according to the damage rate and the number of affected users (ST6).
3).

Here, the operator in the central maintenance center 5
When an arbitrary damaged area displayed on the screen is selected on the screen (ST64), the route information (damaged route) and the damaged point in the selected area are displayed in the database system 14 (ST65), and accordingly, central maintenance is performed. The worker in the center 5 checks the status of the disaster (ST66), formulates a disaster recovery plan (ST67), and arranges a recovery operation (ST68).

The embodiments of the present invention have been described above. However, the present invention is not necessarily limited to the above-described method, but may achieve the object of the present invention and have the effects described below. It can be changed and implemented as appropriate.

[0078]

As described above in detail, according to the present invention, it is possible to carry out a test of an optical cable required for grasping the damage situation of an optical communication network with high accuracy, and to perform a required test. The optical cable test can be quickly and efficiently performed, and the information on the communication affected area can be displayed in detail and specifically.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an application system for explaining a method for grasping a state of damage to an optical communication network according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a method for constructing an optical communication network database according to an embodiment of the present invention.

FIG. 3 is a first flowchart illustrating a method for grasping a state of damage to an optical communication network according to an embodiment of the present invention.

FIG. 4 is a second flowchart illustrating a method for grasping a state of damage to an optical communication network according to an embodiment of the present invention.

FIG. 5 is a third flowchart illustrating a method for grasping a state of damage to an optical communication network according to an embodiment of the present invention.

FIG. 6 is a fourth flowchart illustrating a method for grasping a state of damage to an optical communication network according to an embodiment of the present invention.

FIG. 7 is an application system configuration diagram for explaining a conventional optical communication network damage situation grasping method to which a remote optical fiber test system is applied.

FIG. 8 is an application system configuration diagram for explaining a conventional optical communication network damage situation grasping method using an optical pulse tester.

FIG. 9 is a configuration diagram of an application system for explaining a conventional method for grasping a state of damage to an optical communication network using a portable optical cable tester.

[Explanation of symbols]

 α: Remote optical fiber test system (RFTS) A, B: Telephone office 1: Optical cable 2: Optical fiber 3: Optical switch 4: Test equipment for RFTS 5: Central maintenance center 6: Equipment information database 7: Map database 8: RFTS Center device 9 Network 10 Optical pulse tester (OTDR) 11 Form 12 Portable optical cable tester 13 Terminator 14 Database system 15 Recording medium

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G08B 25/01 G08B 25/01 C 5K051 25/08 25/08 F H04B 10/22 H04B 17/00 M 10 / 00 H04M 3/00 E 17/00 H04B 9/00 A H04M 3/00 (72) Inventor Naoki Nakao 2-3-1 Otemachi, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Toshinao Kokubu 2-3-1 Otemachi, Chiyoda-ku, Tokyo F-term in Nippon Telegraph and Telephone Corporation (reference) 2G086 CC03 5C087 AA03 AA09 AA24 BB11 BB15 BB74 DD02 DD49 EE05 EE07 EE11 FF01 FF02 FF04 FF19 FF20 GG06 GG18 GG18 GG18 GG18 GG18 GG18 GG18 GG18 GG18 GG18 GG18 GG51 GG66 5K002 BA06 BA33 DA12 EA05 FA01 GA03 5K019 BA56 BB55 DA03 DA05 DC02 5K042 AA03 CA10 GA01 JA04 5K051 AA09 DD14 FF01 LL02

Claims (15)

[Claims] An optical communication network database construction method for constructing an optical communication network database comprising at least an equipment information database for storing equipment data of optical cables constituting an optical communication network. Each time the optical cable laying work and equipment change work are performed, a step of classifying the equipment data for each optical cable and accumulating the same in the equipment information database, and the equipment data once accumulated in the equipment information database, Performing a process of recording on a recording medium readable and writable by an optional optical cable tester for testing the optical cable. 2. The method according to claim 1, wherein the step of recording the facility data on the recording medium is periodically and repeatedly performed irrespective of the frequency of the optical cable laying work and the facility changing work. How to build an optical communication network database. 3. The method according to claim 1, wherein the step of recording the facility data on the recording medium includes the step of setting data representing a representative optical fiber among a plurality of optical fibers constituting the optical cable. Or the optical communication network database construction method according to 2. 4. The apparatus according to claim 1, wherein each time the optical cable needs to be tested, said equipment data provided from said recording medium to said optical cable tester, and the actual equipment status of said optical cable at said telephone station. The optical cable tester executes a step of updating the equipment data when the equipment data does not match the equipment status as a result of the comparison. Item 4. The optical communication network database construction method according to item 1, 2 or 3. 5. The optical communication network database construction according to claim 4, wherein the step of comparing the facility data with the facility status is performed visually by a worker located at the central office. Method. 6. The method of updating the equipment data in the optical cable tester, comprising the step of re-recording the updated equipment data on the recording medium through the optical cable tester. The optical communication network database construction method according to claim 4. 7. The step of accumulating the facility data in the facility information database further includes accumulating the updated facility data newly obtained in the step of recording the updated facility data on the recording medium through the optical cable tester. The optical communication network database construction method according to claim 6, further comprising the step of: 8. An optical communication system comprising at least an equipment information database for storing equipment data of an optical cable constituting an optical communication network, and a map information database for storing map data on an area where the optical communication network is installed. An optical communication network damage situation grasping method for grasping a damage situation of the optical communication network at the time of occurrence of a disaster based on a network database, wherein the method is provided by the optical communication network database construction method according to claim 1 or 2. Loading the recording medium on which the facility data is recorded, together with the optical cable tester, into the telephone station having jurisdiction over the optical communication network in which a disaster is expected; and from the recording medium to the optical cable tester. A test is performed for each of the optical cables based on the provided equipment data, and the resulting test data is classified for each of the optical cables. And recording the test result data recorded on the recording medium into the optical communication network database, and referring to the map information database for the distribution of the communication-affected area indicated by the test result data. And visually displaying it on a map,
Are sequentially executed. 9. An optical communication system comprising at least an equipment information database for storing equipment data of optical cables constituting an optical communication network, and a map information database for storing map data on an area where the optical communication network is laid. An optical communication network damage situation grasping method for grasping a damage situation of the optical communication network at the time of disaster occurrence based on a network database, wherein the method is provided by the optical communication network database construction method according to claim 3. A step of carrying the recording medium on which the facility data is recorded into the telephone station having jurisdiction over the optical communication network where the disaster is expected, together with the optical cable tester; and providing the optical disk tester from the recording medium. A test is performed for each of the representative optical fibers in the optical cable based on the facility data, and the test result data accompanying the test is performed. A step of classifying each optical cable and recording on the recording medium, capturing the test result data recorded on the recording medium into the optical communication network database, and distributing a communication affected area indicated by the test result data, A process of referring to a map information database and schematically displaying the map on a map,
Are sequentially executed. 10. The step of recording the test result data on the recording medium includes: performing a test on all optical fibers constituting a predetermined optical cable determined to be abnormal based on the test result data; Including the step of classifying the test result data recorded on the recording medium again in the optical communication network database, including the step of classifying each of the optical cables and recording the distribution again in the recording medium. 10. The method according to claim 9, further comprising the step of: taking in, and displaying in detail a distribution of a communication-affected area indicated by the test result data on a map with reference to the map information database. How to grasp the situation. 11. The optical communication network damage status grasping method according to claim 10, wherein the step of displaying the distribution of the communication damage area involves color-coded display according to the scale of the damage rate. 12. The optical communication network damage status grasping method according to claim 10, wherein the step of displaying the distribution of the communication affected area involves color-coded display according to the scale of the number of affected users. . 13. The optical communication network damage status grasping method according to claim 10, wherein the displaying of the distribution of the communication damage area involves displaying a damage point and a damage route. 14. The method of recording the test result data on the recording medium, comprising: before the optical cable test, the equipment data provided from the recording medium to the optical cable tester; Comparing the actual equipment status with the actual equipment status, and, if the equipment data does not match the equipment status as a result of the comparison, updating the equipment data in the optical cable tester. The optical communication network damage situation grasping method according to claim 8, 9, 10, 11, 12, or 13, wherein: 15. The damage situation of the optical communication network according to claim 14, wherein the step of comparing the facility data with the facility state is performed visually by a worker arranged at the central office. How to figure out.