JP3934313B2 - Subscriber line test system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a subscriber line test system that performs various tests according to received complaint calls.
[0002]
[Prior art]
Conventionally, a large-scale network has a system for accepting complaint calls. For example, in public switched telephone networks (PSTN) and ISDN, a dedicated telephone number is prepared for complaint call processing by a carrier that provides equipment of these networks. Therefore, when a user specifies a desired telephone number and makes a call and the call quality is extremely poor or difficult to call, the user makes a complaint by calling the dedicated telephone number. be able to.
[0003]
[Problems to be solved by the invention]
By the way, conventionally, a complaint processing person who has received a complaint from a user handles the complaint that can be resolved on the spot, and the line to which the user's telephone is connected or this line. In the case where it is impossible to understand without examining the equipment that houses the machine, the maintenance personnel are given instructions for inspection. For example, in response to complaints that it is difficult to make a call, a person in charge of complaint processing uses a dedicated terminal device to check whether a pulse signal or tone signal is normally output from the telephone by having the user press the number key on the telephone. Confirm that the phone needs to be repaired if an abnormality is detected. In addition, abnormalities may not be detected in such simple tests. For abnormalities with unknown causes, dispatch maintenance personnel to the telephone equipment site and conduct various tests using dedicated measuring instruments. Will do.
[0004]
In particular, when a telephone device, which is a subscriber terminal, is directly accommodated in an exchange included in the exchange network, an abnormality in the subscriber line or this subscriber line can be connected using a test function in the exchange. It is possible to check whether there is an abnormality in the channel board which is the interface device in the exchange, but if each subscriber terminal is accommodated in a relay device connected to the exchange, this relay device or this Since there is no method for testing the subscriber line connected to the network, it was necessary to send maintenance personnel directly to the place where the relay device was set in order to investigate the cause of the abnormality.
[0005]
Conventionally, as described above, there are various methods for dealing with complaints depending on the content of the complaint, so it is impossible to manage various test methods and results corresponding to each complaint, and test according to the specifications of the relay device. The criteria for the results were not unified. For this reason, there are problems in that it takes time and man-hours for performing various tests on complaint calls, and it is impossible to quickly obtain test results and to perform unified management.
[0006]
The present invention was created in view of such points, and its purpose is to reduce labor and man-hours when performing a test for a complaint call, and to quickly obtain and unify test results. It is an object of the present invention to provide a subscriber line test system capable of performing general management.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, a subscriber line test system of the present invention is connected to a subscriber terminal via a subscriber-system relay device connected to an exchange, and includes test condition determination means, test request means, A test function unit and a test result judging means are included. The test condition determining means determines the test condition including the geographical condition and the environmental condition of the subscriber relay device. When a test request corresponding to the occurrence of a complaint call is input, the test request means subscribes an instruction to perform a predetermined test on at least one of the subscriber relay device, the subscriber terminal, and the subscriber line. It is sent to the system relay device. The test function unit is installed in the subscriber system relay device, and performs a test according to the test execution instruction sent by the test requesting means. The test result determination means compares the determination reference value variably set according to the test condition determined by the test condition determination means with the test value obtained by the test performed by the test function unit, The quality of the test result is judged.
[0008]
According to the present invention, it is possible to instruct the test function unit in the subscriber system relay device to perform a test simply by making a test request corresponding to the complaint call. Therefore, labor and man-hours when performing various tests can be reduced. In particular, since the test conditions including the geographical conditions and environmental conditions of the subscriber relay device are determined, even if the place where the test request is issued is remote from the subscriber relay device, the subscriber relay Appropriate judgment criteria can be set in consideration of the installation location and installation environment of the apparatus, and correct test results can be obtained. Moreover, since it becomes possible to perform a test from a remote place when performing a test on the subscriber relay devices scattered in various places, it is possible to shorten the time until the test is performed. In addition, since it is possible to collectively manage the criteria for determining the quality of test contents and test results, unified management of the entire test becomes possible.
[0009]
In addition, it is desirable that the environmental condition is set based on the measurement result output from the sensor by the test condition determining means by providing a sensor installed in or near the subscriber relay device. Since temperature, humidity, etc. change dynamically depending on the installation location, etc., by measuring the state of this change with a sensor, it is possible to always grasp the environmental conditions correctly, and the obtained results are used as test criteria. By reflecting the above, it is possible to obtain a correct test result.
[0010]
Also, connected to the above-described subscriber relay device, an external test device that performs a test in the same manner as the test function unit, and a test function unit that is a test request destination according to the test content corresponding to the test request or It is desirable to provide a test request destination selection means for determining an external test apparatus. By connecting an external test device to the subscriber relay device, it becomes easy to add a new function or change a conventional function according to the test contents. In addition, since the test request destination for actually performing the test can be selected according to the test contents, the degree of freedom of the test can be increased and the reliability of the test result can be improved.
[0011]
In addition, when a plurality of complaint call processing systems having different specifications are connected to the communication network described above, when a test request is input from each of the plurality of complaint call processing systems by the test request unit described above, It is desirable to give an instruction to perform a test in response to each of a plurality of test requests. Even if there are multiple complaint call processing systems with different specifications, various tests can be performed using a common test function unit or external test equipment. Can do. In addition, since a plurality of complaint call processing systems can coexist depending on the customer base and the like, it is possible to deal with detailed complaint call processing.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a subscriber line test system according to an embodiment to which the present invention is applied will be described in detail.
FIG. 1 is a diagram showing an overall configuration of a subscriber line test system according to an embodiment. As shown in FIG. 1, in the communication network of this embodiment, a plurality of subscriber terminals (TE) 300 are connected to an exchange network 100 via a plurality of access nodes 200. In addition, a subscriber line test / relay apparatus 400 is connected to the switching network 100, and a plurality of complaint call processing systems 500, 510, 520 are connected to the subscriber line test / relay apparatus 400. Further, an external test apparatus 600 is connected to each access node 200.
[0013]
The switching network 100 includes an ISDN and a public telephone network. The access node 200 is a subscriber-system relay device when the subscriber terminal 300 cannot be directly accommodated in the exchange 110 because the distance between the exchange 110 and the subscriber terminal 300 is long. The subscriber terminal 300 is typically a telephone and is connected to the access node 200 via a subscriber line.
[0014]
FIG. 2 is a diagram showing a detailed configuration of the access node 200. As shown in FIG. 2, the access node 200 includes interface processing units 210 and 212, a channel (CH) unit 220, and a test function unit 230.
One interface processing unit 210 is connected to the exchange 110 included in the switching network 100 and performs transmission / reception processing of various data with the switching network 100. The other interface processing unit 212 is connected to the external test apparatus 600 and performs input / output processing of test instructions and test results with the subscriber line test / relay apparatus 400. Further, in order to perform various tests by the external test apparatus 600, it is necessary to connect the external test apparatus 600 and the CH unit 220 and the like, and this connection is performed via the interface processing unit 212.
[0015]
The CH unit 220 is for accommodating the subscriber terminal 300, and has a physical slot to which a subscriber line to which the subscriber terminal 300 is connected is connected.
The test function unit 230 tests whether there is an abnormality regarding the CH unit 220, the subscriber terminal 300, and the subscriber line connecting them. The test target and test contents are instructed by the subscriber line test / relay apparatus 400. Various sensors 240 are connected to the test function unit 230. For example, the sensor 240 includes a temperature sensor and a humidity sensor that measure the temperature and humidity inside and outside the access node 200.
[0016]
Note that the external test apparatus 600 connected to the interface processing unit 212 also tests the presence / absence of an abnormality related to the CH unit 220, the subscriber terminal 300, and the subscriber line connecting them, like the test function unit 230. Yes, the subscriber line test / relay apparatus 400 instructs which of the functional test unit 230 and the external test apparatus 600 is used for the test.
[0017]
FIG. 3 is a diagram showing a detailed configuration of the subscriber line test / relay apparatus 400. As shown in FIG. 3, the subscriber line test / relay apparatus 400 includes test request individual management units 410, 412, 414, common processing units 420, 422, 424, a test condition database (DB) 430, and access node / interface processing. 440, a database (DB) update processing unit 450, and a GUI processing unit 452.
[0018]
Each of the plurality of individual test request management units 410 manages the contents of individual test requests sent from the corresponding complaint call processing system 500. Similarly, each of the plurality of individual test request management units 412 manages the contents of individual test requests sent from the corresponding complaint call processing system 510. Each of the plurality of individual test request management units 414 manages the contents of individual test requests sent from the corresponding complaint call processing system 520.
[0019]
The common processing unit 420 performs various processes common to each of the plurality of complaint call processing systems 500, and includes a testable state determination unit 420A, a test target determination unit 420B, a test request processing unit 420C, and a test condition determination unit. 420D and the result determination part 420E are included. The testable state determination unit 420A determines whether or not the CH unit 220 in the access node 200 to be tested is in a testable state. The test target determination unit 420B determines which of the test function unit 230 and the external test apparatus 600 performs the test of interest. The test request processing unit 420C requests the test function unit 230 or the external test apparatus 600 to perform the test. The test condition determination unit 420D determines individual test conditions corresponding to the test to be performed based on test condition data (described later) stored in the test condition database 430. The result determination unit 420E performs a pass / fail determination when a test result is sent from the test function unit 230 or the external test apparatus 600 that requested the test.
[0020]
Similarly, the common processing unit 422 performs various processes common to each of the plurality of complaint call processing systems 510. The common processing unit 424 performs various processes common to each of the plurality of complaint call processing systems 520. The configuration of these common processing units 422 and 424 is the same as that of the common processing unit 420 described above, and a detailed description thereof is omitted.
[0021]
The test condition database 430 determines when the results of various tests performed on the CH units 220, the subscriber terminals 300, and the subscriber lines connecting these in the access nodes 200 scattered throughout the region are good or bad. Reference data and various test condition data are stored.
[0022]
FIG. 4 is a diagram illustrating specific examples of various test conditions stored in the test condition database 430. As shown in FIG. 4, various test conditions include device temperature, humidity, temperature, CH unit type, telephone cable type, country type, customer type, service type, measuring machine type, and other data. Yes.
[0023]
The “apparatus temperature” is the temperature inside each access node 200. “Humidity” is the humidity inside (or outside) each access node 200. “Air temperature” is the temperature around each access node 200. For these data as environmental conditions regarding each access node 200, values measured by various sensors 240 connected to the functional test unit 230 are collected and used.
[0024]
“CH unit type” indicates version information of the CH unit 220 provided in each access node 200. The testable items (specific examples will be described later) differ depending on the version.
“Telephone cable type” indicates the type of subscriber line. Various cables are used depending on the country or region, but when conducting line tests, etc., it is necessary to use different criteria (resistance values and capacitance values) for each cable type. It is necessary to know the type of cable used for the line.
[0025]
The “country type” is for specifying the country in which each access node 200 is installed. Since test contents and judgment criteria may vary depending on the country, it is necessary to specify in which country the access node 200 is installed. In the present embodiment, only this country type is used as the regional condition. However, in addition to this, the “region type” indicating which region the access node 200 is set by dividing the region according to climate, security, or the like. Or the like may be added.
[0026]
“Customer type” indicates identification information of each customer when there is a difference in determination criteria depending on the customer. For example, there may be a case where a plurality of stages of line usage charges are set, and a customer who pays a high usage charge is always promised to ensure good call quality. The “service type” is used to specify the type when the service supplied by each access node 200 is different.
[0027]
“Measurement machine type” indicates the type (including version information) of the test function unit 230 provided in each access node 200, the presence / absence of the external test apparatus 600, the type (including version information) of the external test apparatus 600, and the like. Show.
“Other” includes the ID (identification information) of the access node 200 corresponding to each customer's telephone number and the ID of the CH unit 220. In general, since the complaint call processing system 500 or the like notifies a customer's telephone number that makes a complaint, based on this telephone number, which access node 200 is subject to the test, which customer uses. It is necessary to know which CH unit 220 accommodates the subscriber terminal 300 to be used, and for this purpose, “other” data stored in the test condition database 430 is used.
[0028]
Also, the access node / interface processing unit 440 shown in FIG. 3 performs processing for transmitting and receiving various data to and from the access node 200 to be tested. In the present embodiment, the subscriber line test / relay apparatus 400 is connected to the switching network 100 and transmits / receives various data to / from each access node 200 via the switching network 100.
[0029]
The database update processing unit 450 performs processing for updating the contents of the test condition database 430. For example, “equipment temperature”, “humidity”, and “air temperature” as environmental conditions included in the above-described test conditions are updated at regular intervals, and other test conditions are updated appropriately according to change instructions from the operator. Is done.
[0030]
The GUI processing unit 450 is an operation unit for the operator to directly change the contents of the test condition database 430, and implements GUI processing using input / output hardware such as a display device, a keyboard, and a mouse, and these hardware. Dedicated software is included. The operator can correct, add, or delete the various test conditions shown in FIG. 4 by operating the keyboard and mouse while viewing the GUI screen for changing the test conditions.
[0031]
The access node 200 described above is a subscriber relay device, the test condition determination unit 420D is a test condition determination unit, the test request processing unit 420C is a test request unit, the result determination unit 420E is a test result determination unit, and a test target determination The unit 420B corresponds to the test request destination selection unit.
[0032]
The subscriber line test system of this embodiment has such a configuration, and the operation thereof will be described next.
FIG. 5 is a diagram showing an operation procedure for updating the contents of the test condition database 430 included in the subscriber line test / relay apparatus 400. First, the database update processing unit 450 determines whether or not measurement data related to temperature and humidity has been received from the access nodes 200 scattered in various places (step S100). If not received, a negative determination is made, and then the database update processing unit 450 determines whether or not a test condition change instruction has been issued by the operator (step S101). If no change instruction is issued by the operator, a negative determination is made, and the process returns to step S100 described above and the process is repeated.
[0033]
The test function unit 230 in each access node 200 measures temperature and humidity using various sensors 240 at regular time intervals, and the measurement result is synchronized with the measurement timing via the interface processing unit 210. It is sent to the subscriber line test / relay device 400. When the database update processing unit 450 receives these measurement results sent from each access node 200 by the access node / interface processing unit 440, the database update processing unit 450 makes an affirmative determination in the above-described determination of step S100, and stores the test condition database 430. The contents (“apparatus temperature”, “humidity”, “air temperature”) are changed (step S102).
[0034]
If the operator operates the keyboard or mouse provided in the GUI processing unit 452 to instruct the change of the test condition, an affirmative determination is made in the determination of step S101 described above, and then the database update processing unit 450 Changes the contents of the test conditions other than the environmental conditions in the test condition database 430 in accordance with the operation contents of the operator (step S102). For example, when a customer or an access node 200 is added, various related test conditions are added. Further, when the version of the CH unit 220 provided in the specific access node 200 is replaced with the latest version, the content of “CH unit type” is updated.
[0035]
In this way, data such as “apparatus temperature” is updated each time measurement data is collected, and other data is updated each time a change instruction is given by the operator so that test conditions are always obtained. It has become.
FIG. 6 shows a series of operation procedures from when a test request corresponding to the occurrence of a complaint call is input to when the test is performed, the test measurement value is received, the quality is judged, and the result is notified to the complaint call processing system. It is a flowchart which shows.
[0036]
Each test request individual management unit 410, 412, 414 always determines whether or not a test request has been sent from the corresponding complaint call processing system 500, 510, 520 (step S200). If a test request is not sent from any of the complaint call processing systems 500, 510, 520, a negative determination is made, and this determination process is repeated.
[0037]
For example, when a complaint call is generated in the complaint call processing system 500, that is, when a complaint is sent from the customer to the complaint call processing system 500, an operator for complaint call processing that operates a terminal of the complaint call processing system 500 Determines whether or not to send a test request to the subscriber line test / relay apparatus 400 in order to process the complaint call, and if it is determined that some test is necessary, the test request including the customer's telephone number is determined. Is sent to the subscriber line test / relay device 400.
[0038]
When such a test request is sent, the test request individual management unit 410 makes an affirmative determination in the determination of step S200. Next, the testable state determination unit 420A in the common processing unit 420 determines whether or not the testable state is in a testable state based on the test request (step S201). For example, the testable state determination unit 420A searches the test condition database 430 based on the sent telephone number, and there are various data (specifically, “other” data) corresponding to the telephone number. Whether the telephone number is currently busy or not. When various data for this telephone number is not registered in the test condition database 430 (incorrect telephone number may be sent) or when busy, the CH unit corresponding to this telephone number Since a test cannot be performed on 220 or the like, a negative determination is made in the determination in step S201. In this case, a predetermined error notification is sent to the complaint call processing system 500 that is the transmission source of the test request (step S202).
[0039]
If various data corresponding to the telephone number exists and is not busy, an affirmative determination is made in the determination in step S201, and then the test object determination unit 420B sends the test request sent thereto. The details of the test content corresponding to, and whether to perform this test in the test function unit 230 or the external test apparatus 600 are determined (steps S203 and S204). Further, the test target determination unit 420B determines the line type of the subscriber line corresponding to this telephone number (step S205). In this determination, if the line type (for example, ISDN line or analog telephone line) is determined for each CH unit 220, the line type is determined by examining the contents of “CH unit type” included in the test condition database 430. can do. Alternatively, the data may be retrieved by including the line type data for each customer in the “other” data.
[0040]
FIG. 7 is a diagram showing a specific example of test contents. For example, the test content may be a line test, a circuit test, a terminal test, a bit error measurement, a listening test, and the like. The line test is a test for checking whether there is an abnormality in the subscriber line. The circuit test is a test for checking whether or not the CH unit 220 is abnormal. The terminal test is a test for checking whether or not the subscriber terminal 300 is abnormal. The bit error measurement is to measure a bit error of data transmitted / received via the ISDN line when the line type is an ISDN line. The listening test is a test in which a third party listens to a conversation between the subscriber terminal 300 being tested and the other subscriber terminals 300 using the three-party call function.
[0041]
“Type 1” to “Type 5” shown in FIG. 7 indicate combination patterns of data of “CH unit type” and “measurement device type” included in the test condition database 430. That is, which version of the CH unit 220 is used, whether the external test apparatus 600 is connected in addition to the test function unit 230, and what version of the test function unit 230 or the external test apparatus 600 is used , Etc. The test contents that can be implemented vary. For example, “Type 3” corresponds to the case where the external test apparatus 600 is provided, and the versions of the CH unit 220, the test function unit 230, and the external test apparatus 600 are the latest. All the tests shown in FIG. 7 can be performed.
[0042]
Next, the test request processing unit 420C makes a test request to the test function unit 230 of the corresponding access node 200 or the external test apparatus 600 (step S206).
Further, the result determination unit 420E determines a determination criterion necessary for determining the quality of the test measurement values sent from these (step S207).
[0043]
FIG. 8 is a diagram illustrating an example of a determination criterion corresponding to the line test. In this embodiment, it is assumed that a two-core telephone cable composed of an A line and a B line is used, and a resistance value R and a capacitance value C between these lines or between each line and the ground layer are measured. Is done. For example, R _AG Is the resistance value between the A line and the ground layer, C _AB Indicates a capacitance value between the A line and the B line.
[0044]
As shown in FIG. 8, the judgment criteria differ depending on whether the line type is an ISDN line or an analog line. In the initial state, a determination criterion using a default value is set, but the determination criterion is changed using various data included in the test conditions shown in FIG. For example, when the device temperature and temperature are high, the resistance value of the telephone cable is also high, so that the reference resistance values A1 to A3 and B1 to B3 that are the criteria for determining insulation failure are also higher than the default values. Be changed.
[0045]
Next, the result determination unit 420E waits for reception of a test measurement value (S208). When the test measurement value is received, the result determination unit 420E compares the received measurement value with the determination criterion determined in step S207 to perform a test. The quality of the result is determined (step S209). In FIG. 8, when the determination criterion corresponding to each item other than “normal” is applied, it is determined that the corresponding item is abnormal. For example, the resistance value R is more than the changed reference resistance value A4 ′. _AB The capacitance value C is larger than the changed reference capacitance value C3 ′. _AB If is small, it is determined that the subscriber line is disconnected. If none of the criteria for each item other than “normal” is applied, it is determined that there is no abnormality.
[0046]
Next, the result determination unit 420E notifies the test result to the complaint call processing system 500 that is the transmission source of the test request (step S210).
As described above, in the present embodiment, each complaint call processing system 500 or the like simply performs a test request corresponding to the complaint call, and from the subscriber line test / relay apparatus 400, the test function unit 230 in the access node 200, Since it is possible to instruct the external test apparatus 600 connected to the outside to perform the test, it is possible to reduce labor and man-hours when performing various tests for complaint calls. In particular, since the test conditions including the geographical condition and the environmental condition of the access node 200 are determined, even if the place where the test request is issued is away from the access node 200, the installation location and the installation of the access node 200 Appropriate judgment criteria can be set in consideration of the environment, and correct test results can be obtained.
[0047]
In addition, when a test is performed on the access nodes 200 scattered in various places, it is possible to perform the test from a remote location, and thus it is possible to shorten the time until the test is performed. In addition, since it is possible to collectively manage the criteria for determining the quality of test contents and test results, unified management of the entire test becomes possible.
[0048]
In addition, since the temperature, humidity, and the like dynamically change depending on the installation location of the access node 200, the environmental conditions can always be correctly grasped by measuring the state of the change with various sensors 240. The correct test result can be obtained by reflecting the grasped result on the test criterion.
[0049]
Further, by connecting the external test apparatus 600 to the access node 200, it becomes easy to add a new function or change a conventional function according to the test contents. In addition, since the test request destination for actually performing the test can be selected according to the test contents, the degree of freedom of the test can be increased and the reliability of the test result can be improved.
[0050]
Further, even when there are a plurality of complaint call processing systems 500, 510, and 520 having different specifications, various tests can be performed using the common test function unit 230 or the common external test apparatus 600. Therefore, the cost can be reduced by simplifying the equipment. In addition, since a plurality of complaint call processing systems can coexist depending on the customer base and the like, it is possible to deal with detailed complaint call processing.
[0051]
In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above-described embodiment, the determination reference value of the test result is changed based on the data of the various test conditions shown in FIG. 4, but it is necessary to always use all data as the data used for the change. However, it may be appropriately selected and used. Moreover, you may make it add another item to the test conditions shown in FIG.
[0052]
【The invention's effect】
As described above, according to the present invention, it is possible to instruct the test function unit in the subscriber relay device to perform the test simply by making a test request corresponding to the complaint call. On the other hand, labor and man-hours when performing various tests can be reduced. In particular, since the test conditions including the geographical conditions and environmental conditions of the subscriber relay device are determined, even if the place where the test request is issued is away from the subscriber relay device, the subscriber relay Appropriate judgment criteria can be set in consideration of the installation location and installation environment of the apparatus, and correct test results can be obtained.
[0053]
Moreover, since it becomes possible to perform a test from a remote place when performing a test on the subscriber relay devices scattered in various places, it is possible to shorten the time until the test is performed. In addition, since it is possible to collectively manage the criteria for determining the quality of test contents and test results, unified management of the entire test becomes possible.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall configuration of a subscriber line test system according to an embodiment.
FIG. 2 is a diagram showing a detailed configuration of an access node.
FIG. 3 is a diagram showing a detailed configuration of a subscriber line test / relay apparatus.
FIG. 4 is a diagram showing specific examples of various test conditions stored in a test condition database.
FIG. 5 is a diagram showing an operation procedure for updating the contents of a test condition database.
FIG. 6 shows a series of operation procedures from when a test request corresponding to the occurrence of a complaint call is input to when a test is performed, test measurement values are received, the quality is judged, and the result is notified to the complaint call processing system. It is a flowchart which shows.
FIG. 7 is a diagram showing a specific example of test contents.
FIG. 8 is a diagram illustrating an example of a determination criterion corresponding to a line test.
[Explanation of symbols]
100 switching network
110 exchange
200 access nodes
210, 212 Interface processing unit
220 CH units
230 Functional test unit
240 sensors
300 Subscriber terminal (TE)
400 Subscriber line test / relay equipment
410, 412, 414 Test Request Individual Management Unit
420, 422, 424 Common processing unit
420A Testable state determination unit
420B Test object judgment part
420C Test request processor
420D Test condition judgment unit
420E result judgment part
430 Test Condition Database (DB)
440 Access node interface processing unit
450 Database (DB) update processing unit
500, 510, 520 Complaint call processing system
600 External test equipment

Claims (4)

In a subscriber line test system in which a subscriber terminal is connected via a subscriber relay device connected to an exchange,
A test condition determining means for determining a test condition including a geographical condition and an environmental condition of the subscriber relay device;
When a test request corresponding to the occurrence of a complaint call is input, at least one of the subscriber relay device, the subscriber terminal, and a subscriber line connecting the subscriber relay device and the subscriber terminal Test request means for sending an instruction to perform a predetermined test to the subscriber relay device;
The subscriber system relay device, the subscriber terminal, the subscriber system relay device and the subscriber are installed in the subscriber system relay device in accordance with the instruction sent by the test request means. A test functional unit for performing a test on at least one of the subscriber lines connecting the terminal;
By comparing the determination reference value variably set according to the test condition determined by the test condition determination means and the test value obtained by the test performed by the test function unit, A test result judging means for judging pass / fail,
A subscriber line test system comprising: In claim 1,
It is installed in or near the subscriber system relay device, and includes a sensor for measuring the environmental condition,
The subscriber line test system characterized in that the test condition determining means sets the environmental condition based on a measurement result output from the sensor. In claim 1 or 2,
Tested against at least one of the subscriber line relay device, the subscriber terminal, and the subscriber line connecting the subscriber line relay device and the subscriber terminal, connected to the subscriber relay device. An external test device for carrying out
When a test request corresponding to the occurrence of a complaint call is input, a test request destination selection for determining the test function unit or the external test apparatus as a test request destination according to the test content corresponding to the test request Means,
Further comprising
The subscriber line test system, wherein the test request unit sends an instruction to perform a test to a test request destination determined by the test request destination selection unit. In any one of Claims 1-3,
A plurality of complaint call processing systems with different specifications are connected to the exchange network to which the exchange is connected,
The test request means, when the test request is input from each of the plurality of complaint call processing systems, gives an instruction to perform a test corresponding to each of the plurality of test requests Network test system.

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