JPH09214498A - Test system for atm exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recognize the type of hardware and to automatically verify quality corresponding to the type by detecting the installation of a package from a signal emitted from the package and specifying the type of the package. SOLUTION: A package test control part 20 detects that the package 11 is installed from the signal emitted from the package 11 when the package 11 is installed and specifies the type of the package 11. When the package 11 is installed, the package test control part 20 recognizes the type of hardware. Thus, quality corresponding to the type can automatically be verified. When abnormality is detected with cell transmission, the package test control part 20 automatically specifies a fault place. When the verification of the installed package 11 being the first suspected package is not completed, a system establishes a different test communication route and verifies the package again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ATM switch test system, and more particularly to a test system for verifying the quality of data communication functions and service functions of various hardware devices in the ATM switch system.

[0002] In recent years, while the market of ATM exchanges has spread rapidly, there is a demand for a wide variety of services supported by ATM exchanges. For this reason, the hardware installed in the ATM switch is of various types in order to provide these various services, and the service function of each hardware has been expanded. On the other hand, since the method of verifying the quality of these hardware functions is complicated and has expert knowledge, it is necessary to integrate and simplify the method of verifying the quality of the hardware function.

[0003]

2. Description of the Related Art Conventionally, the quality verification of these hardware functions is performed by a tester inside or outside the system by having a maintenance person recognize the type of hardware to be verified and then input a maintenance command. Was there.

Further, there is no online method in the past for quality verification of the service function of the hardware, the apparatus is taken offline, an external test apparatus is connected with the test interface connector, and the dedicated test apparatus can handle the test apparatus. It could only be done by a technician.

However, as the ATM switching system becomes large in scale and the switching system is operated as a remote control device at a place distant from the system body, it is easy to recognize the type of target device to be tested. It's gone. Furthermore, in recent years, the spread of centralized maintenance management, which centrally manages the maintenance and operation of exchanges scattered at each base, is rapidly recommended. In such a situation, the verification of the package accompanying the package exchange / expansion of the communication path system device at each site was carried out while human synchronization was performed between each site and the centralized maintenance center.

Further, in order to verify the service function of the hardware, it is necessary to disconnect the device from the operating state, dispatch a full-time technician, and prepare an external test device.

[0007]

Therefore, the troublesomeness of recognizing the type of hardware to be tested and the operation of the device to perform the service function test must be taken out of operation and there must be a dedicated engineer. Not to mention, there were considerable restrictions on maintenance and operation. In addition, when verifying the installed package, if the maintenance center and the exchange are far from each other, the maintenance of verifying the quality of the package such as the type of package installed by the operator on the exchange side and the maintenance center It was necessary to convey the information necessary for the procedure.

Further, there has been a method of verifying a suspected package by establishing a test communication path from a test device to a package to be tested and transmitting the pseudo cell, but it is assumed that the transmission of the pseudo cell is abnormal. Even if is detected, it cannot always be concluded that the fault of the suspected package, and all devices through which the pseudo cell penetrates will be treated as suspected targets.
In order to identify the failure point, the suspected device was changed and the pseudo-cell transparent verification was repeatedly performed, and the suspected package was replaced.

The present invention has been made in view of the above problems. First, when a hardware package is mounted, the system recognizes the type of hardware,
The quality verification according to the type can be automatically performed. Secondly, when an abnormality is detected by cell transmission, the failure point is automatically specified, and the verification of the mounted package which is the initially suspected package is completed. If not, it is an object of the present invention to provide a test system for an ATM exchange that can establish another test communication route and perform verification again. Thirdly, it is an object of the present invention to provide a test system for an ATM exchange in which the application function of the package, which has been conventionally performed by a dedicated engineer in an offline state, can be verified in an online state by using a test device.

[0010]

FIG. 1 is a block diagram showing the principle of the first invention, and FIG. 2 is a block diagram showing the principle of the second invention. In FIG. 1, 10 is an ATM exchange, 1 is the ATM
A maintenance console 2 connected to the exchange 10 is a test device also connected to the ATM exchange 10. Here, the test apparatus 2 can be provided inside the ATM exchange 10 or outside the ATM exchange 10. In the ATM exchange 10, 11 is a package (constituted of hardware) of a communication path device connected to the ATM exchange 10, 20
When the package 11 is installed, the package 11
It is a package test control unit that detects the mounting of a package from a signal transmitted from the device and specifies the type of the package.

According to the first aspect of the present invention, the package test control unit 20 recognizes the type of hardware when the package 11 is mounted, and automatically executes quality verification according to the type. In addition, when an abnormality is detected by cell transmission, the package test control unit 20 automatically identifies the failure point, and if the verification of the mounted package 11, which is the initially suspected package, has not been completed, the system changes another. A test communication route can be established and verification can be performed again.

According to a second aspect of the invention, when the package test control section 20 detects mounting of the package 11,
The pseudo cell is tested by the system autonomously changing the data transfer rate according to the specified package type.
It is characterized in that the quality of cell conduction in the ATM layer from the minimum flow rate to the maximum flow rate is verified.

According to the second aspect of the invention, when the package test control unit 20 receives the notification of the package mounting, it recognizes the type and the insertion position of the inserted package, and the test management data corresponding to each package type and the ATM switch configuration. By using the device data and the cell transmission route switching device data, the cell continuity test can be performed by establishing a path from the test device to the device under test (suspected package). In this cell continuity quality confirmation test, by using the test management data corresponding to each package type,
The maintenance person does not need the expertise to confirm the package normality.

According to a third aspect of the present invention, the package test control unit 20 is operated when an abnormality such as cell loss or data destruction occurs.
Abnormally activates the cell flow rate detection function in each device for the devices on the transparent route of the pseudo cell from the test device 2 that generates / transmits the pseudo cell to the suspect package 11 that is the test target, and operates abnormally. After the pseudo cell is again transmitted through the same path in which the above is detected, the cell flow rate in each device is collected and analyzed to identify the suspected device. Here, each device is a route device existing from the test device 2 to the suspect package 11.

According to the third aspect of the present invention, when an abnormality such as cell loss is detected in the cell continuity test, the package test control unit 20 causes the transparent cell to be transmitted to each device on the same route as the abnormality detection route. By setting a cell counter (cell flow rate detection device) for counting and performing a retest, a failure point can be automatically detected without the intervention of a maintenance person. Further, since the location of the fault is specified by increasing or decreasing the cell flow rate, it is possible to detect the fault at a plurality of locations. As a result, it is possible to identify the faulty part on the test route other than the suspected package 11, which is the device under test, at the same time.

According to a fourth aspect of the present invention, when an abnormality is detected in the path device from the test apparatus 2 to the suspect package 11 and the cell continuity verification for the suspect package 11 cannot be confirmed, the package test control unit 20 causes the system autonomy. Another test route from the test apparatus 2 to the suspected package 11 is calculated by using, and the pseudo route is transmitted through the calculated route again to verify the quality of the suspected package.

According to the fourth aspect of the present invention, the suspected package 1 which is the device under test due to the occurrence of an abnormality on the route.
If the cell continuity quality test of No. 1 could not be performed, ATM
Other test routes can be calculated and retested using the data of the switching device components and the data of the cell permeation route switching devices. In this case, since a test by another route is also performed, it is possible to improve the implementation rate of the quality confirmation test of the suspected package 11.

In FIG. 2, the same parts as those in FIG. 1 are designated by the same reference numerals. In the figure, 10 is an ATM switch, 2 is a test device, and 11 is a package. In the ATM switch 10, 12 is a switch (switch unit) to which the package 11 is connected, and 13 is a central controller (CC) that controls the entire ATM switch. Package 1
1 has the application functions A to E as shown in the figure.

As these functions, for example, A is a loop control unit and B is a performance monitoring cell (Per).
format Monitor Celing
l), Activate / Deactivate cells (Activ)
ate / DeactivateCell) control unit, C is an OAM loopback cell control unit, D is an inflow cell regulation control unit, and E is a charging control unit. The function of the package 11 is not limited to the functions A to E shown in the figure, and any function can be provided. In the figure, the thick solid line is the control line and the thin solid line is the pseudo cell transparent route.

According to the second invention, under the control of the CC, for example, the pre-test billing information managed in E of FIG. 2 is collected, and after issuing the billing collection instruction for the test call, the test apparatus 2 To generate a pseudo cell and send the pseudo cell to the route shown in the figure. When the test device 2 finishes transmitting and receiving a prescribed number of pseudo cells, it notifies the CC to that effect, and the CC collects the charging information using the control line to the suspected package 11, and the CC A specific (here, E) function check is performed by verifying the charge collection function of the pseudo cell transmitted through the suspected package based on the difference between the charge information before and after the test and the test result information from the test apparatus 2. You can

According to the sixth aspect of the present invention, the central control unit 13 (CC) allows the pseudo cell exceeding the allowable flow rate of the suspected package 11 from the test apparatus 2 to pass therethrough, and the permeation flow rate of the pseudo cell and the suspected package 11 The feature is that the inflow cell regulation function possessed by the communication path system device mounted in the ATM exchange system is verified from the allowable flow rate and the pseudo cell discard amount.

According to the sixth aspect of the present invention, the control path from the CC establishes a pseudo-cell communication path from the test apparatus 2 to the suspected package 11, and, for example, a prescribed inflow for the function of D in FIG. Set the cell regulation level. And C
When C instructs the test device 2 to send a pseudo cell that exceeds the regulation level of the communication path and receives the test completion notification from the test device 2, the CC controls the contents of the test result and the inflow regulation collected at D. It is possible to verify the function of D by collecting the information of the discarded cells in the level.

According to a seventh aspect of the present invention, the central control unit 13 (CC) establishes a test communication path between the test apparatus 2 and the test target apparatus, and then switches from the test apparatus 2 to the test target apparatus. Of the OAM loopback cell, the test apparatus 2 monitors the return of the OAM loopback cell from the test target apparatus, and analyzes the contents of the OAM loopback cell that has been returned. Verify the OAM loopback cell reception / return function,
The OAM loopback cell transmitted from the device under test to the test device 2 and received by the test device 2
It is characterized in that the OAM loopback cell transmission function of the device under test is verified by analyzing the contents of the loopback cell. Here, the test target device is
For example, each function of A to E in the suspected package 11 is indicated.

According to the invention of claim 7, after establishing a communication path between the test device 2 and the device under test under the control of the CC, the OAM loopback cell is sent to the test device (or the device under test). To generate and prompt sending. When the device under test receives the OAM loopback cell, the OAM loopback cell is returned toward the transmission source at, for example, C in FIG. After the notification of the test completion from the test device (or the device under test) is received by the CC, the function verification of C, for example, can be performed based on the comparison result of the transmission / reception cells.

According to an eighth aspect of the present invention, the central controller 13 (CC) activates the test device 2 or the test target device while the pseudo user cell is transmitted from the test device 2 to the test target device. It is characterized in that the transmission / reception and response functions of the activation / deactivation of the device under test are verified by transmitting the / deactivate cell.

According to the invention described in claim 8, after the communication path is established between the test device 2 and the device under test under the control of the CC, the test device 2 is prompted to generate and send a pseudo user cell. . During the transmission of the pseudo user cell, the test apparatus (or the test target apparatus) generates and sends an activate / deactivate cell to the opposite apparatus. Then, when the activated / deactivated cell is received by the device under test, the cell is analyzed by the function of B of FIG. 2, for example, and a response cell is generated / transmitted. According to this, after the notification of the completion of the test is received by the CC, the function verification of, for example, B can be performed by confirming the message content of the response cell.

According to a ninth aspect of the present invention, the central controller 13 (CC) causes the test device 2 to transmit a pseudo user cell to the device under test and activates the line quality monitoring function of the device under test. In this state, the performance monitoring cell is inserted between the pseudo user cells from the test apparatus 2, the reception monitoring of the cell in the test target apparatus and the monitoring analysis result after the cell reception are collected and collected from the test target apparatus. The reception / monitoring analysis function in the performance monitoring cell function of the device under test is verified by detecting the difference with the cell transmission result, and conversely, the performance monitoring cell is inserted from the device under test toward test device 2. By analyzing the contents of the cell with the test equipment and collecting the results, the performance of the test target equipment It is characterized in that to verify the performance monitoring cell transmission function.

According to the invention described in claim 9, in the state where the activated cell is transmitted by the above-mentioned method and the verification of the function of the device under test is completed, the pseudo device is tested by the test device (or the device under test). When a performance monitoring cell is inserted into the device and the device under test receives the performance monitoring cell, the cell is analyzed / checked by the function of B of FIG. 2, for example. Then, the test completion from the test apparatus 2 is received by the CC, and the function verification of, for example, B can be performed based on the pseudo user cell permeation flow rate and the check result of the performance monitoring cell from the test target apparatus.

[0029]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 3 is a block diagram showing an embodiment of the first invention. 1 are denoted by the same reference numerals. In the figure, 10 is an ATM exchange,
Reference numeral 1 is a maintenance console for inputting various commands and the like connected to the ATM switch 10 and displaying the result data output from the package test controller 20. Reference numeral 2 is also connected to the ATM switch 10 for various test cells. It is a test device that generates and sends.

Reference numeral 11 denotes a package as a communication path system device of hardware connected to the ATM switch 10. Reference numeral 20 denotes a package installed from the signal transmitted from the package 11 when the package 11 of the communication path system device is installed. It is a package test control unit that detects that the package has been tested and identifies the type of the package.

In the package test controller 20, 21
Receives the signal information from the inserted package 11,
A signal receiving unit that analyzes and detects the insertion of the package and specifies the type of the package, 22 operates upon detection of the insertion of the package by the signal receiving unit 21,
A test control unit 23 that performs overall control related to the test execution manages test pattern data according to the characteristics of each type of hardware that can be accommodated in the ATM switch, and the type of mounting package specified by the signal receiving unit 21. A test scenario section that obtains the relevant test pattern from the test control section 22 and notifies that information to the test control section 22, 24 is a test execution section that performs interface control with the test apparatus 2 connected to the ATM switch, and 25 is from the test control section 22. Is a message output unit for performing man-machine interface control for outputting the test result information of 1. to the maintenance console 1.

The operation of the system configured as described above will be described below. FIG. 4 shows the first aspect of the first invention.
6 is a sequence diagram showing the operation of the embodiment of FIG. It shows the exchange of signals between hardware, firmware and software. Here, the hardware and the firmware exist in the package 11, and the software exists in the signal receiving unit 21. The firmware has a relay interface function between hardware and software.

When the package 11 is mounted at a predetermined position in the shelf of the system (S1), power is supplied to the package 11 from the system body (S1).
2). When the power is supplied, the package 11 notifies the firmware of the control signal (S3). Upon receipt of this control signal, the firmware retrieves the identification code information of the hardware stored in the ROM in which the firmware program is installed (S4), and notifies the software to the software (S5). When the software receives this information, it recognizes that the package 11 has been installed, searches the package identification code / device type code conversion table (described later), and installs the package installed based on the received hardware identification code. The type of (S
6).

FIG. 5 is a diagram showing an example of the structure of the package identification code / device type code conversion table. The package identification code is stored in order from A, while the package version number and device type accessed by the package identification code are stored.

As described above, according to the first embodiment of the first invention, the package test control unit 20 recognizes the type of hardware when the package 11 is mounted, and It is possible to automatically perform quality verification according to the above, and in addition, at the time of abnormality detection by cell transmission, the package test control unit 20 automatically specifies the failure point,
If the verification of the mounting package 11, which is the initially suspected package, has not been completed, the system can establish another test communication route and perform verification again.

FIG. 6 is a diagram showing an example of the data structure of the test scenario section. In the figure, (a) is test management data, which is composed of a device type and corresponding test band pattern / loop point setting position information. That is,
The test band pattern and loop point setting position are determined for each type of package to be installed. For example, the test band pattern and the loop point setting position corresponding to the device type (0) are stored.

(B) is ATM switch constituent device data, which is composed of information on the positional relationship of each constituent device. That is, there are a plurality of device numbers for each device type, and upper device information and lower device information corresponding to each device number are stored. For example, the device numbers corresponding to the device type (0) are stored as (0), (1), etc., and with respect to the device number (0), upper device information positioned higher than the component device and lower device information. The lower-level device information of the position is stored.

(C) is cell-transparent route switching device configuration data in the ATM switch, and stores effective route information through which cells can pass through the cell input points and output points of the device. That is, a plurality of output side device information corresponding to the input side device information and a plurality of cell transparent routes corresponding to the output side device information are stored. For example, incoming device information (0)
The outgoing side device information connected to is stored as (0), (1) ..., For the outgoing side device information (0), usable cell transparent routes are (0), (1). It is stored.

FIG. 7 is a flow chart showing the operation of the second embodiment of the first invention. First, package 1
When 1 is mounted, the package 11 notifies the signal receiving unit 21 of the device type and the device position (S1). The signal receiving unit 21 accesses the test scenario unit 23 via the test control unit 22 and refers to the ATM switch configuration data. Then, referring to FIG. 6B according to the device type of the mounted package, the higher-level device information of the test device and the test target device is collected (S2).

Next, the test control unit 22 refers to the cell transparent route switching device configuration data in the test scenario unit 23, and calculates the pseudo cell transparent route from the upper device information of the test device and the test target device (S3). ). The test execution unit 24 sets the loop point to the automatic test target device from the loop point setting position information of FIG. 6A (S4). Next, the test execution unit 24 establishes a path in the test band designated by the band pattern from the test band pattern data of FIG. 6A (S5). At this time, the pass consists of the test apparatus 2 and the package 1.
1 is set via the switch unit (not shown) in the ATM switch 10.

Then, the test executor 24 activates the test apparatus 2 to execute a cell continuity test (transmission test) in which cells are transmitted through the established path (S6). The test cell sent from the test apparatus 2 returns to the test apparatus 2 again through the established path. The test apparatus 2 determines the test result (S7). If the test result is abnormal, alarm processing (described later) is executed.

If the test result is normal, the test execution unit 24 checks whether there is a next test band pattern (S).
8). If there is a pattern of the next test band, the test from step S5 is repeated using that band. In this way, the cell continuity test is performed from the minimum band to the maximum allowable band of each device in accordance with the test band pattern obtained from the path test band in FIG. 6A.

As described above, according to the second embodiment of the first aspect of the invention, when the package test control unit 20 receives the notification of the package mounting, the type and insertion position of the inserted package are recognized, By using the test management data corresponding to each package type, ATM switch configuration device data, and cell transmission route switch device data, the path from the test device to the device under test (suspected package) is established, and the cell continuity test is performed. Can be done. Further, in this cell continuity quality confirmation test, since the test management data corresponding to each package type is used, the maintenance person does not need specialized knowledge for confirming the package normality.

FIG. 8 is an explanatory diagram of a third embodiment of the first invention. The same parts as those in FIG. 3 are designated by the same reference numerals. In the figure, 2 is a test device, 11 is a device under test (package), and 14 is a relay device.
The M exchange 10 is included. In the relay device 14, 11 is a functional unit (device) divided into a plurality of parts.
In (a), the test cell is transmitted from the test apparatus 2 to the test target apparatus 11 via the relay apparatus 14, folded back at the loop point in the test target apparatus 11, and the original route is traced backward to the test apparatus 2. 9 illustrates a back cell continuity test.

The cell continuity test is performed by the method shown in FIG. When an abnormality occurs as a result of the determination in step S7 of FIG. 7, as shown in (b) of FIG. 8, the test apparatus 2 → the relay apparatus 14 → on the same route as the abnormality detection route →
The cell counters 1 to 16 are activated for each device of the device under test 11, and the re-cell continuity (transmission) test is performed using the path information under the same conditions as when the abnormality was detected. After passing through the cell, the count result of the cell counter of each device is tested device 2 → relay device 14
-> The test target device 11 is sequentially compared, and the maintenance person is notified of a portion having a difference as a failure portion.

FIG. 9 is a flow chart showing the operation of the third embodiment of the first invention. When an abnormality is detected in the route of FIG. 8A (S1), this abnormality is notified from the test apparatus 2 to the test control unit 22 via the test execution unit 24. The test control unit 22 refers to the ATM switch constituent device data (see FIG. 6) in the test scenario unit 23 and calculates a device on the same route as the abnormality detection (S2). Next, the test control unit 22 activates the cell counter of each device on the route (S3). As a result, as shown in FIG.
All cell counters up to 16 are activated.

Next, the test control section 22 activates the test execution section 24, and the test execution section 24 activates the test apparatus 2. As a result, from the test device 2 to the package (device under test)
The test cell passes through the paths up to 11 again (S4). Then, the test apparatus 2 sets the number of cells to be transmitted (S
5). When the cell continuity test is completed, the test control unit 22
The number of cells counted by each cell counter is collected. Then, the test control unit 22 determines the cell counter result from the cell counter 1 (S6).

For example, in FIG. 8B, the number of cells transmitted from the test apparatus 2 is 100, and the cell counter 4
If the count value up to is 100 and the count value of the cell counter 5 is 95, it can be seen that a cell drop abnormality has occurred in the device including the cell counter 5.
The count result is stored in the test control unit 22 (S7).

Next, it is checked whether or not the processing of all cell counters has been completed (S8), and if not completed,
Returning to step S6, the result of the next cell counter is judged. When the judgment processing of all cell counters is completed, the processing is completed.

On the other hand, the determination result is notified from the test control section 22 to the maintenance console 1 via the message output section 25 and displayed on the display section. The maintenance person can recognize in which device the abnormality has occurred.

As described above, the third aspect of the first invention is as follows.
According to the embodiment of the present invention, when an abnormality such as a cell loss is detected in the cell continuity test, the package test control unit 20 counts the transparent cells in each device on the same route as the abnormality detection route. By setting a counter (cell flow rate detecting device) and performing a retest, a failure point can be automatically detected without the intervention of a maintenance person.
Further, since the location of the fault is specified by increasing or decreasing the cell flow rate, it is possible to detect the fault at a plurality of locations. As a result, it is possible to identify the faulty part on the test route other than the suspected package 11, which is the device under test, at the same time.

FIG. 10 is an explanatory diagram of a fourth embodiment of the first invention. 8 are denoted by the same reference numerals. As shown in the figure, the test apparatus 2 and the test target apparatus (suspected package) 11 are connected via a relay apparatus 14. It is assumed that the cell continuity test is performed along the route of FIG. 8A (route of FIG. 10). Then, an abnormality occurs, and as a result of retesting using the cell counter as shown in FIG. 8B, there is a cell transmission abnormality between the cell counters 1 to 7 in FIG. It is assumed that the locations are specified as the cell counters 4 and 5, and therefore no cells can be transmitted after the cell counter 6 and it is impossible to confirm the normality of the operation of the device under test 11.

In this case, the test controller 22 of the relay device 14
Refers to the ATM switch configuration device data and the cell-transparent route switching device configuration data, selects another route (route in FIG. 10), performs a cell continuity test again, and confirms the normality of the test target device 11. Confirm.

FIG. 11 is a flow chart showing the operation of the fourth embodiment of the first invention. First, when the package 11 is mounted (S1), the package 11 notifies the signal receiving unit 21 of the device type and the device position (S2).
The signal receiving unit 21 accesses the test scenario unit 23 via the test control unit 22 and refers to the ATM switch configuration data. Next, the test control unit 22 refers to the cell transparent route switching device configuration data in the test scenario unit 23, and calculates the pseudo cell transparent route from the upper device information of the test device and the test target device. The test execution unit 24 sets a loop point to the automatic test target device from the loop point setting position information, and the test execution unit 24 determines that the test band of the band pattern is specified from the test band pattern data of FIG. Establish a path.

Then, the test executor 24 executes the cell continuity test (transmission test) in which the test apparatus 2 is activated to allow the cell to pass through the established path (S3). The test cell sent from the test apparatus 2 returns to the test apparatus 2 again through the established path. The test apparatus 2 determines the test result (S4). If the test result is normal, it is checked whether or not there is another band pattern (S5), and if there is another band pattern, the process returns to step S3 to perform a cell continuity test with that band pattern.

If the test result is abnormal, the cell counter of each device is set in the manner shown in FIG. 8B, and the recell transmission test is performed (S6). Then, the test control unit 22 determines the count value of the cell counter of each device (S7),
Notify the maintainer. Then, the normality of the operation of the device under test 11 is confirmed (S8). When the normality of the operation can be confirmed, the process goes to step S5. When the normality of the operation cannot be confirmed, the test control unit 22 refers to the cell transmission route switching device configuration data (see (c) of FIG. 6),
Another route is selected (S9), and the cell penetration test (continuity test) is executed again.

According to the fourth embodiment of the first aspect of the invention, when the cell continuity quality test of the suspected package 11 which is the device under test cannot be performed due to the occurrence of an abnormality on the route, the ATM switch configuration is constituted. Other test routes can be calculated using the device data and the cell permeation route switching device configuration data and retested. In this case, since a test by another route is also performed, it is possible to improve the implementation rate of the quality confirmation test of the suspected package 11.

FIG. 12 is an explanatory view of the first embodiment of the second invention. The same components as those in FIG. 2 are denoted by the same reference numerals. In the figure, 11 is a device under test (for example, a suspicious package), 12 is an exchange device, 2 is the exchange device 12
A test device connected to the device under test 11 via
Gives various commands to the test device 2,
It is a central control unit (CC) that receives a test result from the test apparatus 2. The CC is also connected to the device under test 11. As the test target device 11, each function of A to E (see FIG. 2) in the suspected package can be the target. 11a to 11d are test target devices 11
It is a cell counter provided inside. The operation of the system configured as described above will be described below.

After a test communication path is established between the test apparatus 2 and the test target apparatus 11, the CC instructs the test apparatus 2 to send a pseudo user cell. Further, the test target device 11 is instructed to operate the billing count and cell counter function to count the flow rate of the pseudo user cell passing through the test path.

When the test apparatus 2 completes all cell transmission and reception monitoring, the test apparatus 2 notifies the CC of the end of the test. At the CC, the charge count value and the cell count value counted by the device under test 11 are collected in response to this. In the quality verification of the charging function of the test target device 11, if there is a failure that causes a cell loss on the test communication path, in order to prevent the deterioration of the quality of the result of the target test location, the upstream and downstream Verification is performed based on the count values of the cell counters 11a and 11c adjacent to the charging counter. Actually, depending on whether or not the cell counters 11a and 11b are equal, the downward charging function is
The upward charging function is verified depending on whether the cell counters 11c and 11d are equal.

FIG. 13 is a flow chart showing the operation of the first embodiment of the second invention. First, the CC establishes a test communication path between the test apparatus 2 and the test target apparatus 11 (S1). Once the communication path has been established, CC sets up test device 2
To send a pseudo cell of 5000 cells (S
2). Next, the CC causes the test target device 11 to count the flow rate of the pseudo cell that passes through the communication path in the downlink direction (switching device 12 → line side) in the test target device (S3).
The cell counters 11a and 11b in the device under test 11 are
Count the cell flow rate in the down direction. Next, the CC causes the test apparatus 2 to count the flow rate of the pseudo cell that passes through the communication path in the up direction (line side → switching apparatus 12) in the test target apparatus (S4). The cell counters 11c and 11d in the device under test 11 count the upward cell flow rate.

When the test apparatus 2 has finished sending and receiving all cells, it sends a test end notification to the CC (S5). In the CC, the count value is read out for each cell permeation flow rate counting point (11a to 11d) of the device under test 11 (S6). Next, the CC confirms the normality of the charging function control unit to be tested, and the cell counters 11a and 11c immediately before the downstream and upstream charging function control units (E in FIG. 2) and the charging counters 1 respectively.
The difference between 1b and 11d is checked (S7). Actually, the downward charging function is checked by mutual comparison of the cell counters 11a and 11b, and the upward charging function is checked by mutual comparison of the cell counters 11c and 11d. Then, a warning message is sent to the maintenance console (not shown) according to the check result (S
8).

According to the first embodiment of the second aspect of the invention, under the control of the CC, for example, the pre-test charging information managed by E is collected, and the charging collection instruction for the test call is issued. After that, the test device 2 generates a pseudo cell, sends the pseudo cell to the route shown in the figure, and when the test device 2 finishes transmitting and receiving a predetermined number of pseudo cells, it notifies the CC to that effect, Collects billing information for the suspected package 11 by using a control line. The CC checks the difference between the billing information before and after the test at CC and the test result information from the test apparatus 2 to determine whether the pseudo cell transmitted through the suspected package. By verifying the charge collection function, a specific (here, E
Function confirmation can be performed. The specific function check is not limited to E, and other functions (for example, A to D in FIG. 2) can be checked.

FIG. 14 is an explanatory diagram of a second embodiment of the second invention. The same parts as those in FIG. 12 are designated by the same reference numerals. In the figure, 11 is a device to be tested (suspected package), 12 is a switching device, 2 is a testing device, and 13 is a central control device (CC). In the device under test 11, 11e is a test execution unit having a certain function, 11f and 1
Reference numeral 1g denotes cell counters arranged before and after the test execution unit 11e. The operation of the system configured as described above will be described below.

In this embodiment, the verification of the regulation control of the inflow cell to be tested is performed by checking the path band x (cell / cell) of the test communication path established between the test apparatus 2 and the test object apparatus 11.
s), cell transmission band y (cell /
At s), the test device 2 sends out a pseudo user cell. In order to more accurately count the cell discard amount in the test execution unit 11e, which is the test target point, the flow rate of the pseudo user cell is counted by the cell counters 11f and 11g adjacent to the test execution unit 11e. Since y> x, the test execution unit 11e
Discards pseudo user cells exceeding x.

When the reception monitoring of all the cells transmitted by the test apparatus 2 is completed, the cell counters 11f and 1 are detected by the CC.
The cell discard expected value T (y−x) / which is calculated by collecting the count value of 1 g and calculating the cell permeation flow rates of the cell counters 11 f and 11 g from the pass band x, the cell transmission band y, and the cell transmission number T The normality of the function is verified by checking if it is equal to y.

FIG. 15 is a flow chart showing the operation of the second embodiment of the second invention. The CC first establishes a test communication path between the test apparatus 2 and the test target apparatus 11 (S1). Next, from the CC to the test apparatus 2, the number T
The generation of the pseudo cell is instructed (S2). From the test apparatus 2, a number T of cells are transmitted via the test communication path.
The device under test 11 measures the flow rate of the pseudo user cell passing through the communication path in the upstream direction (S3). When the transmitted cell returns and the reception of the pseudo user cell is completed, the test apparatus 2 issues a test end notification to the CC (S4).

Upon receipt of the test end notification from the test apparatus 2, the CC reads the count value from the cell counter point of the test target apparatus 11 (S5). Next, CC
Is a pass band x and a cell transmission band y as a verification method of the cell flow rate regulation function in the test execution unit 11e to be tested.
Then, quality verification is performed by the following equation from the cell permeation flow rates before and after the test execution unit 11e (S6).

T (y-x) / y = count value of cell counter 11f-count value of cell counter 11g CC indicates a warning message from the maintenance console to the maintenance person when cell discard is abnormal due to the above check result. Yes (S7).

According to the second embodiment of the second aspect of the invention, a pseudo-cell speech path from the test apparatus 2 to the suspect package 11 is established under the control of the CC.
The inflow cell regulation level is set for the D function of the CC, the CC instructs the test apparatus 2 to send out a pseudo cell that exceeds the regulation level of the communication path, and receives the test completion notification from the test apparatus 2. Then, the CC can verify the function of D by collecting the contents of the test result and the information of the discarded cells with the inflow regulation level collected at D.

FIG. 16 is an explanatory diagram of a third embodiment of the second invention. The same components as those in FIG. 14 are denoted by the same reference numerals. In the figure, 2 is a test device (or test target device), 12 is a switching device, 14 is a relay device connected to the switching device 12, 11 is a test target device (or test device) connected to the relay device 14. Is. That is, the test apparatus 2 may be the test target apparatus, and the test target apparatus 1
1 may be a test device. The operation of the system thus configured will be described with reference to the sequence diagram shown in FIG.

(Test apparatus → Test target apparatus) When a test request is issued from the maintenance console (not shown), the CC establishes a path between the test apparatus 2 and the test target apparatus 11 (S1). Next, the CC instructs the test apparatus 2 to send the OAM loopback cell (S2).

When the test apparatus 2 receives this request, the OA
M cells are generated (S3), and O is set for the device under test 11.
The AM cell is transmitted (S4). The test apparatus 2 that has completed the cell transmission monitors the cell loopback by the timer, and if the cell from the test target apparatus 11 cannot be received within a certain time, the OAM loopback cell function of the corresponding apparatus is normal. It will be judged that it is not working.

On the other hand, when the OAM cell is received on the side of the device under test 11 which receives the cell (S5), the internal information of the cell recognizes that the device itself is the termination information.
The received cell is discarded (S6), a corresponding AM cell for response is generated and inserted into the return path (S7).

FIG. 18 is an explanatory diagram of transmission cell information and response cell information in the third embodiment of the second invention.
Both the transmission cell information and the response cell information are, in order from the top, the VPI (virtual path identifier) of the transparent target path, the VCI (virtual channel identifier) of the transparent target path, the loopback display, the cell source information, the terminal device information, and the transmission / reception cell. It is composed of matching information. The loopback display of the transmission cell information is "0", and the loopback display of the response cell is "1".

The test apparatus 2 monitors the return of cells by a timer. When the response OAM cell is received (S8), the transmission / reception cell is collated (S9). Then, the cell loopback test result in the corresponding device is sent to the CC as a test end notification (S10). The CC notifies the maintenance console of the test result (S11). The maintenance person can see the test result displayed on the display unit of the maintenance console.

(Device to be tested → Test device) The same applies when a cell is flowed from the device to be tested 11 toward the test device 2. The device under test 11, which has received the cell generation request,
Information as shown in FIG. 18 is added to the OAM loopback cell and sent to the test apparatus 2. The test device 2, which is a loopback device, monitors a cell for reception by a timer, and if a cell from the test target device 11 cannot be received within a certain period of time, the OAM cell generation / transmission function of the corresponding test target device 11 is performed. Is not working properly,
Notify the CC accordingly.

On the other hand, after receiving the cell, the test apparatus 2 recognizes from the internal information of the cell that it is the termination information, discards the received cell, and generates a corresponding cell for response. , Insert in the return path. The device under test 11, which has received the loopback cell, checks the internal information of the reception cell and notifies the CC of the operation result of the OAM loopback cell generation / reception function of its own device.

According to the third embodiment of the second invention, after the communication path is established between the test apparatus 2 and the test target apparatus 11 under the control of the CC, the test apparatus (or the test target apparatus) is set. Generate an OAM loopback cell for
Prompt delivery. When the device under test receives the OAM loopback cell, the OAM loopback cell is returned toward the transmission source at, for example, C in FIG. After the notification of the test completion from the test device (or the device under test) is received by the CC, the function verification of C, for example, can be performed based on the comparison result of the transmission / reception cells.

FIG. 19 is a sequence diagram showing the operation of the fourth embodiment of the second invention. A signal exchange between the CC, the test apparatus (or the test target apparatus), and the test target apparatus (or the test apparatus) is shown.

(Test device → Device to be tested) When a maintenance person issues a test request from a maintenance console (not shown), this test request is notified to the CC. The CC establishes a cell transmission path between the test apparatus 2 and the test target apparatus 11 (S
1). Then, the CC sets a return point in the corresponding device, and then transmits a pseudo user cell from the test device 2 (S2).

After the cell transmission between the test apparatus 2 and the test target apparatus 11 is started, the CC generates and sends an activate cell to the test apparatus to prompt the start of the line quality monitoring function of the hardware. Prompt (S
3).

Test apparatus 2 that receives a request for cell generation / transmission
Attaches the information as shown in FIG. 20 to the activated cell and sends it to the device under test 11 (S4). FIG.
In 0, the transmitted cell information is the V of the transparent target path.
PI, VCI of transparent target path, message information,
It consists of transmission / reception cell matching information. The message information consists of an activate request and a deactivate request. The test apparatus 2 that has completed the transmission of cells monitors the reception of response cells by the timer, and if the cells from the test target apparatus 11 cannot be received within a certain time, the test target apparatus 11
It is determined that the activation of the line quality monitoring function of is not operating normally, and the CC is notified of that.

On the other hand, when the test target device 11 receives the activate cell (S5), it activates the line quality monitoring function of its own device (S6). Then, the monitoring result is added to the information in the response cell and is inserted in the return path (S7).
As shown in FIG. 20, the response cell information includes the VPI of the transparent target path, the VCI of the transparent target path, the message information, and the transmission / reception cell matching information. The message information consists of activation permission or activation non-permission.

When the test apparatus 2 receives the response cell within the cell loopback monitoring time (S8), it checks the internal information of the response cell, and sends the activation result of the line quality monitoring function of the test target apparatus 11 to the CC. Notify (S9). When the CC that has received the activation result has normally activated the line quality monitoring function of the test target device 11, the CC continuously generates a deactivate cell that prompts the termination of the line quality monitoring function of the test target device 11.
Prompt the test apparatus 2 to send (S10). If an abnormality is found in the startup result, the device under test 1 is tested at that time.
Notify the maintenance person that there is a problem in starting the line quality monitoring function of 1.

When the test apparatus 2 receives the deactivate cell generation / transmission request, the test apparatus 2 adds the information as shown in FIG. 20 to the deactivate cell and sends it to the relevant test target apparatus 11 (S11). The test apparatus 2 that has completed transmission of cells monitors the reception of response cells by a timer, and if the response cells from the test target apparatus 11 cannot be received within a certain period of time, it monitors the line quality of the test target apparatus 11. It judges that the stop of the function is not operating normally, and notifies the CC to that effect.

On the other hand, when the device under test 11 receives the deactivate cell (S12), it stops the line quality monitoring function of its own device (S13), adds the stop result to the information in the response cell, and returns. To the path (S1
4). When receiving the response cell within the cell turn-back time (S15), the test apparatus 2 checks the internal information of the response cell and notifies the CC of the result of stopping the line quality monitoring function of the test target apparatus 11 (S16). ).

The CC which has received the stop result is the device under test 1
If the stop of the line quality monitoring function of 1 is normal, the maintenance person is notified that there is no problem in starting / stopping the operation of the line quality monitoring function of the device under test 11, and the stop result is abnormal. In this case, the maintenance person is notified that the function of stopping the line quality monitoring function of the device under test 11 is abnormal.
Then, the pseudo user cell transmission from the test apparatus 2 is stopped (S17).

(Device to be tested → Test device) The above-described operation is the same when the cell is flown from the device to be tested 11 to the test device 2. When the test target device 11 receives the cell generation / transmission request, the test target device 11 adds the information as shown in FIG. 20 to the activated cell and transmits the information to the test device 2. The test apparatus 2 which is the receiving destination of the cell monitors the reception of the cell by the timer, and when the cell from the test target apparatus 11 cannot be received within a certain period of time, the activated cell of the test target apparatus 11 is generated and transmitted. It judges that the function is not operating normally and notifies the CC to that effect.

On the other hand, the test apparatus 2 which has received the cell adds the fact that the line quality monitoring function has been normally activated to the response cell to the information in the cell and inserts it in the return path. The device under test 11, which has received the response cell, checks the internal information of the response cell and notifies the CC of the result. The CC that has received the activation result continues to instruct the test target device 11 to generate and send the deactivate cell if the generation and transmission of the activate cell of the test target device 11 are normal. If an abnormality is found in the activation result, the maintenance person is notified at that time that there is a problem with the function of generating and sending the activated cell of the device under test 11.

The device under test 11, which has received the cell generation / transmission request, attaches the information as shown in FIG. 20 to the deactivate cell and sends it to the test device 2. The test device 2 which is the receiving destination of the cell monitors the reception of the cell by the timer, and when the cell from the test target device 11 cannot be received within a certain period of time, generates a deactivate cell of the test target device 11. It judges that the sending function is not operating normally and notifies the CC to that effect.

On the other hand, the test apparatus 2 which has received the cell adds to the information in the cell that the suspension of the line quality monitoring function is normally activated in the response cell and inserts it in the return path. The device under test 11, which has received the response cell, checks the internal information of the response cell and notifies the CC of the result. The CC that has received the stop result has no problem in the generation / delivery function of the activate / deactivate cell of the test target device 11 to the maintenance person if the generation / delivery of the deactivate cell of the test target device 11 is normal. If a notice is given and an abnormality is found in the stop result, the maintenance target device 1
Notify that there is an abnormality in the generation / delivery function of the deactivate cell of No. 1.

According to the fourth embodiment of the second invention, a communication path is established between the test device and the device under test under the control of the CC, and then the pseudo user cell is transmitted to the test device 2. Prompt generation and equipment. During the transmission of the pseudo user cell, the test apparatus (or the test target apparatus) generates and sends an activate / deactivate cell to the opposite apparatus. Then, when the activated / deactivated cell is received by the device under test, the cell is analyzed by the function of B of FIG. 2, for example, and a response cell is generated / transmitted. According to this, after the notification of the completion of the test is received by the CC, the function verification of, for example, B can be performed by confirming the message content of the response cell.

FIG. 21 is a sequence diagram showing the operation of the fifth embodiment of the second invention. Test apparatus 2 and FIG.
A cell transmission path is established between the test target devices 11 whose operation confirmation is completed, and the test device 2 transmits a pseudo user cell. After the cell transmission between the test apparatus 2 and the test target apparatus 11 is started, the forward monitoring cell (Forward) is transmitted to the test apparatus (or the test target apparatus).
Prompt generation / transmission of Monitoring Cell).

(Test device → Device to be tested) When a maintenance person issues a test request from a maintenance console (not shown), this test request is notified to CC. The CC establishes a cell transmission path between the test apparatus 2 and the test target apparatus 11 (S
1). Then, the CC sets a return point in the corresponding device, and then transmits a pseudo user cell from the test device 2 (S3).

After the transmission of the cell between the test apparatus 2 and the apparatus under test 11 is started, the CC generates and sends an activate cell to the test apparatus to prompt the start of the hardware line quality monitoring function. Prompt (S
3).

Test apparatus 2 that received a request for cell generation / transmission
Attaches the information as shown in FIG. 20 to the activated cell and sends it to the device under test 11 (S4). FIG.
In 0, the transmitted cell information is the V of the transparent target path.
PI, VCI of transparent target path, message information,
It consists of transmission / reception cell matching information. The message information consists of an activate request and a deactivate request. The test apparatus 2 which has completed the transmission of the cells monitors the reception of the response cell by the timer, and when the cell from the test target apparatus 11 cannot be received within a certain time, the line quality monitoring function of the test target apparatus is checked. It judges that the startup is not operating normally and notifies the CC to that effect.

On the other hand, when the test target device 11 receives the activate cell (S5), it activates the line quality monitoring function of its own device (S6). Then, the monitoring result is added to the information in the response cell and is inserted in the return path (S7).
As shown in FIG. 20, the response cell information includes the VPI of the transparent target path, the VCI of the transparent target path, the message information, and the transmission / reception cell matching information. The message information consists of activation permission or activation non-permission.

When the test device 2 receives the response cell within the cell loopback monitoring time (S8), it checks the internal information of the response cell and notifies the CC of the activation result of the line quality monitoring function of the device under test. Yes (S9). The operation confirmation of the device under test 11 is completed by the above sequence.

Forward from CC to test device 2
Request for generation / transmission of monitoring cell (S1)
0). Upon receiving this request, the test apparatus 2 adds the information shown in FIG. 22 to the forward monitoring cell, inserts it into the transmitted pseudo user cell, and then the test target apparatus 1
It is sent to 1 (S11). In FIG. 22, the transmission cell information (forward monitoring cell) consists of the VPI of the transparent target path, the VCI of the transparent target path, and the number of quality monitoring target cells, and the response cell information (backward monitoring cell) is the transparent target. It consists of the VPI of the path, the VCI of the transparent target path, and the quality monitoring result. The test apparatus 2 that has completed the transmission of cells monitors the reception of response cells by a timer, and if a cell from the test target apparatus 11 cannot be received within a fixed time, the performance monitoring function of the test target apparatus 11 is performed. Is not operating normally and notifies the CC to that effect.

On the other hand, the device under test 11 receives the forward monitoring cell (S12), and recognizes the number of pseudo user cells targeted for the performance monitoring function from the number of pseudo user cells in the cell (S13). Then, each performance monitor item as shown in FIG. 23 is checked, and the backward monitoring cell (Ba
The check result is included in the ckward Monitor Cell and is inserted into the pseudo user cell in the return direction (S14).

The performance monitoring items are the Transmitted Information Cell (Trans).
(mitted Information Cells)
And Impaired Blo
cks) and Total Lost User Information Cell (Total Lost User Info)
error cells and error user information cells (Error User Info).
location cells and the lost user information cell (Lost User Info).
operationCells) and a misinserted user information cell (Misserted)
User Information Cells).

When the test apparatus 2 receives the backward monitoring cell within the reception monitoring time of the response cell (S
15) After extracting the performance monitoring result in the same cell, notify the result to CC. The CC that received the performance monitoring results next
A request to send a deactivate cell is issued to (S1
6). Upon receiving this request, the test apparatus 2 sends a deactivate cell to the test target apparatus 11 (S1).
7). Upon receiving the deactivate cell (S18), the test target apparatus 11 stops the operation of the line quality monitoring function (S19) and sends a response cell to the test apparatus 2 (S20).

When the test device 2 receives the response cell (S
21), check the stop result (S22), and notify the CC. The CC instructs the performance monitoring function of the device concerned and the stop of the transmission of the pseudo user cell (S2).
3). Then, the CC that has completed all post-processing notifies the maintenance person of the performance monitoring result notified from the test apparatus 2.

(Test target device → Test device) In this case, the test target device 11 that has received the cell generation / transmission request
22 adds information as shown in FIG. 22 to the forward monitoring cell, inserts it into the pseudo user cell being sent, and sends it to the test apparatus 2. The test device 2 which is the cell receiving destination monitors the cell reception by the timer,
When the cell from the device under test 11 cannot be received within the fixed time, it is determined that the forward monitoring cell sending function of the device under test 11 is not operating normally and the CC is notified of that. To do.

On the other hand, the test apparatus 2 receiving the forward monitoring cell confirms the number of pseudo user cells to be the target of the performance monitoring function from the number of pseudo user cells in the same cell, and then checks each performance monitor item (Fig. 23), the check result is included in the backward monitoring cell, and is inserted in the pseudo user cell in the return direction. The device under test 11, which has received the backward monitoring cell, extracts the performance monitoring result in the same cell and notifies the CC of the result.

The CC which has received the performance monitoring result instructs the performance monitoring function of the test apparatus 2 and the stop of the transmission of the pseudo user cell. Then, the CC that has completed all the post-processing is the device under test 1
Notify the maintenance person of the performance monitoring results notified by 1.

According to the fifth embodiment of the second aspect of the present invention, the activated cells are sent by the above-described method, and the verification of the function of the test target device 11 is completed, and the test device (or the test target device) is tested. (Device) inserts a performance monitoring cell into the pseudo user cell, and the device under test 11 receives the performance monitoring cell, the cell is analyzed / checked by the function of B of FIG. 2, for example. . Then, the test completion from the test apparatus 2 is confirmed by C
The function verification of, for example, B can be performed based on the pseudo user cell permeation flow rate received by C and the check result of the performance monitoring cell from the device under test.

[0109]

As described in detail above, claim 1 is as follows.
According to the described invention, in an ATM exchange system including an ATM exchange, a maintenance console, and a test device,
Provided in the ATM switch is a package test control unit for detecting the package from the signal transmitted from the package when the package of the communication path device is mounted and specifying the type of the package. This allows the package test control unit to automatically perform quality verification according to the type of hardware when the package is mounted, by recognizing the type of the hardware. At the same time, if the package test control unit automatically identifies the failure point, and the verification of the initially suspected package is not completed, the system establishes another test communication route and performs verification again. You can

According to the second aspect of the present invention, when the package test control section detects the mounting of the package, it tests the pseudo cell by making the data transfer rate variable by the system autonomy according to the specified package type. When the package test controller receives the notification of the package mounting by performing the quality verification of the cell conduction in the ATM layer from the minimum flow rate to the maximum flow rate through the device, the type and insertion position of the inserted package are recognized, and By using the test management data corresponding to the package type, the ATM switch configuration device data, and the cell transmission route switch device data, the path from the test device to the test target device (suspected package) is established, and the cell continuity test is performed. Can be done. In this cell continuity quality confirmation test, by using the test management data corresponding to each package type,
The maintenance person does not need the expertise to confirm the package normality.

According to the third aspect of the present invention, when an abnormality such as a cell loss or data destruction occurs, the package test control section detects a pseudo cell from a test device to a suspected package which is a test target. For the devices on the transmission route of the pseudo cell, the cell flow detection function in each device is activated by the system autonomously, and the pseudo cell is transmitted again on the same route where the abnormality is detected, and then the cell flow in each device is changed. By collecting and analyzing and identifying the suspected device,

In the cell continuity test, when an abnormality such as a cell loss is detected, the package test control unit counts the permeation cells in each device on the same route as the abnormality detection route (cell counter). By setting and re-testing, the failure point can be automatically detected without the intervention of maintenance personnel. Further, since the location of the fault is specified by increasing or decreasing the cell flow rate, it is possible to detect the fault at a plurality of locations. As a result, it is possible to simultaneously identify the fault location on the test route other than the suspected package that is the device under test.

According to the invention described in claim 4, when an abnormality is detected in the path device from the test device to the suspected package and the cell continuity verification for the suspected package cannot be confirmed, the package test control unit performs the system autonomy test. By calculating another test route from the device to the suspect package, using the calculated route to transmit the pseudo cell again, and performing the quality verification of the suspect package,
If the cell continuity quality test of the suspected package 11, which is the device under test, cannot be performed due to the occurrence of an abnormality on the route, another test route is set by using the ATM switch configuration device data and the cell transmission route switching device configuration data. It can be calculated and retested. In this case, since the test by the other route is also performed, it is possible to improve the implementation rate of the quality confirmation test of the suspected package.

According to the fifth aspect of the present invention, in an ATM exchange system comprising an ATM exchange, a maintenance console and a test device, when the package of the communication path equipment is installed in the exchange system, the central part of the ATM exchange is installed. The control device activates the billing information collection function, which is one of the functions of the package, transmits the pseudo cell from the test device to the suspected package, and collects the permeation flow rate of the pseudo cell and the suspected package. By verifying the normality of the billing information collecting function by collecting and accumulating the number of transparent cells possessed by the suspected package by comparing the billing information with the billing information, the CC manages, for example, E. Shown in the figure after collecting the pre-test billing information, issuing the billing collection instruction for the test call, and generating the pseudo cell from the test device 2. Pseudo cell sent to over the windows, and send and receive predetermined number of pseudo cells from the test device is completed, performs a notification to that effect to the CC, CC suspect package 11
, Collect the billing information using the control line, and
At C, a specific (here, E) function confirmation is performed by verifying the charge collection function of the pseudo cell that has passed through the suspected package based on the difference between the charge information before and after the test and the test result information from the test device. Can be done.

According to the sixth aspect of the present invention, the central control unit (CC) allows the pseudo cell that exceeds the permissible flow rate of the suspected package from the test device to pass through, and the permeation flow rate of the pseudo cell and the permissible flow rate of the suspected package. By verifying the inflow cell regulation function of the communication path system device installed in the ATM switching system from the discard amount of the pseudo cell and C
The control from C establishes a pseudo-cell communication path from the test equipment to the suspect package, sets a prescribed inflow cell regulation level for the function of D in FIG. 2, and CC
Instructs the test device to send a pseudo cell that exceeds the regulation level of the communication path, and upon receipt of the test completion notification from the test device 2, CC sets the content of the test result and the inflow regulation level collected at D. The function of D can be verified by collecting the information of the discarded cells.

According to the seventh aspect of the invention, the central controller (CC) establishes a test communication path between the test device and the device under test, and then transfers from the test device to the device under test. The OA of the test target device is transmitted by sending the OAM loopback cell, monitoring the return of the OAM loopback cell from the test target device in the test device, and analyzing the content of the returned OAM loopback cell.
By verifying the M loopback cell reception and loopback function, sending the OAM loopback cell from the test target device to the test device, and analyzing the contents of the OAM loopback cell received by the test device, the test target By verifying the OAM loopback cell transmission function of the device, a communication path is established between the test device and the device under test under the control of the CC, and then the OAM loopback is performed for the test device (or the device under test). Generate cell generation,
Prompt delivery. When the device under test receives the OAM loopback cell, for example, the OAM loopback cell is returned toward the transmission source at C in FIG. 2 and the test completion notification from the test device (or the device under test) is sent to the CC. After the acceptance, the function verification of C, for example, can be performed based on the collation result of the transmission / reception cells.

According to the eighth aspect of the present invention, the central controller (CC) activates the test device or the test target device from the test device or the test target device in a state where the pseudo user cell is transmitted from the test device to the test target device. The permeation of the device under test by activating the deactivate cell
By verifying the transmission, reception, and response functions of deactivate, a communication path is established between the test device and the device under test under the control of the CC, and then the pseudo user cell is generated and the device is tested for the test device. When the test device (or the test target device) generates and sends an activate / deactivate cell to the opposite device during the transmission of the pseudo user cell, and the test target device receives the activate / deactivate cell, The cell B is analyzed by the function B of 2 and the response cell is generated and transmitted. According to this, after the notification of the completion of the test is received by the CC, the function verification of, for example, B can be performed by confirming the message content of the response cell.

According to the ninth aspect of the invention, the central controller (CC) causes the pseudo user cell to be transmitted from the test apparatus to the test target apparatus and activates the line quality monitoring function of the test target apparatus. In this condition, insert a performance monitoring cell between the pseudo user cells from the test equipment,
In the performance monitoring cell function of the test target device by collecting the reception monitoring of the cell in the test target device and the monitoring analysis result after receiving the cell, and detecting the difference from the cell transmission result collected from the test target device. By verifying the reception / monitoring analysis function, conversely insert a performance monitoring cell from the device under test to the test device, analyze the contents of the cell with the test device, and collect the results to be tested. By verifying the performance monitoring cell transmission function of the device, the activated cell is transmitted by the method described above, and the test device (or the test target device) simulates the verification of the function of the test target device. Insert a performance monitoring cell into the user cell and attach it to the device under test. When receiving the performance monitoring cell, performing analysis and checking of the cell, for example, by the function of the B 2. Then, the test completion from the test device is received at CC, and the function verification of, for example, B can be performed based on the pseudo user cell permeation flow rate and the check result of the performance monitoring cell from the device under test.

As described above, according to the present invention, firstly, when the hardware package is mounted, the system recognizes the type of the hardware and automatically executes the quality verification according to the type. Secondly, when an abnormality is detected by cell permeation, the failure location is automatically identified, and if the initially installed package, which is the suspect package, has not been verified, another test communication route is established, It is an object of the present invention to provide an ATM exchange test system that can be verified again. Further, it is possible to provide a test system for an ATM exchange, which can verify the application function of the package which has been performed in the off-line state by the dedicated engineer in the on-line state by using the test device.

[Brief description of drawings]

FIG. 1 is a principle block diagram of the first invention.

FIG. 2 is a principle block diagram of the second invention.

FIG. 3 is a block diagram showing an embodiment of a first invention.

FIG. 4 is a sequence diagram showing an operation of the first exemplary embodiment of the first invention.

FIG. 5 is a diagram showing a configuration example of a package identification code / device type conversion table.

FIG. 6 is a diagram showing a configuration example of data of a test scenario section.

FIG. 7 is a flowchart showing an operation of the second embodiment of the first invention.

FIG. 8 is an explanatory diagram of a third embodiment example of the first invention.

FIG. 9 is a flowchart showing the operation of the third exemplary embodiment of the first invention.

FIG. 10 is an explanatory diagram of a fourth embodiment example of the first invention.

FIG. 11 is a flowchart showing an operation of the fourth exemplary embodiment of the first invention.

FIG. 12 is an explanatory diagram of a first embodiment example of the second invention.

FIG. 13 is a flowchart showing the operation of the first embodiment of the second invention.

FIG. 14 is an explanatory diagram of a second embodiment example of the second invention.

FIG. 15 is a flowchart showing the operation of the second embodiment of the second invention.

FIG. 16 is an explanatory diagram of a third embodiment example of the second invention.

FIG. 17 is a sequence diagram showing an operation of the third exemplary embodiment of the second invention.

FIG. 18 is an explanatory diagram of transmission cell information and response cell information according to the third embodiment of the second invention.

FIG. 19 is a sequence diagram showing an operation of the fourth exemplary embodiment of the second invention.

FIG. 20 is an explanatory diagram of transmission cell information and response cell information in the fourth exemplary embodiment of the second invention.

FIG. 21 is a sequence diagram showing an operation of the fifth exemplary embodiment of the second invention.

FIG. 22 is an explanatory diagram of transmission cell information and response cell information according to the fifth exemplary embodiment of the second invention.

FIG. 23 is an explanatory diagram of performance monitor items in the fifth embodiment of the second invention.

[Explanation of symbols]

 1 Maintenance Console 2 Test Equipment 10 ATM Switch 11 Package 20 Package Test Control Section

Claims (9)

[Claims] 1. An ATM exchange system comprising an ATM exchange, a maintenance console, and a test device, wherein when a package of a communication path device is installed in the ATM exchange, a package is transmitted from a signal transmitted from the package. A test system for an ATM exchange, which is provided with a package test control unit that detects that the package is mounted and identifies the type of the package. 2. The package test control unit, when detecting the mounting of the package, changes the data transfer rate by the system autonomy to allow the pseudo cell to pass through from the test device according to the specified type of package, and from the minimum flow rate. 2. The ATM exchange test system according to claim 1, wherein the quality verification of cell continuity in the ATM layer up to the maximum flow rate is performed. 3. A device on a transparent route of a pseudo cell from a test device for generating / transmitting a pseudo cell to a suspected package which is a test target when an abnormality such as cell loss or data destruction occurs. On the other hand, system autonomy activates the cell flow rate detection function in each device, and after passing through the pseudo cell again in the same path where an abnormality is detected, the cell flow rate in each device is collected and analyzed to identify the suspected device. 3. The ATM exchange test system according to claim 2, wherein the test system is specified. 4. When an abnormality is detected in the path device from the test device to the suspected package and the cell continuity verification for the suspected package cannot be confirmed, the package test control unit autonomously performs another system from the test device to the suspected package. 4. The test system for an ATM exchange according to claim 3, wherein a test route is calculated, the pseudo cell is transmitted again using the calculated route, and the quality of the suspected package is verified. 5. An ATM switching system comprising an ATM switching system, a maintenance console and a test device, wherein when a package of a communication path system device is mounted on the switching system, the central control unit in the ATM switching system has the package. The charging information collecting function, which is one of the functions, is activated, the pseudo cell is transmitted from the test device to the suspected package, and the permeation flow rate of the pseudo cell is compared with the charging information collected in the suspected package. By doing so, the ATM exchange test system is characterized by verifying the normality of the billing information collection function by collecting and accumulating the number of transparent cells in the suspected package. 6. The central control unit transmits a pseudo cell that exceeds the permissible flow rate of the suspected package from the test device, and the ATM switch system based on the permeation flow rate of the pseudo cell, the permissible flow rate of the suspected package, and the discard amount of the pseudo cell. 6. The ATM exchange test system according to claim 5, wherein the inflow cell regulation function of the speech path system device installed in the system is verified. 7. The central control device, after establishing a test communication path between the test device and the device under test, causes the test device to send out an OAM loopback cell for the device under test, Monitor the OAM loopback cell from the device under test and return the OAM loopback cell.
By analyzing the contents of the AM loopback cell, the OAM loopback cell reception / return function of the test target device is verified, and the OAM loopback cell reception / returning function from the test target device to the test device is performed.
6. The OAM loopback cell transmission function of the device under test is verified by sending out an AM loopback cell and analyzing the contents of the OAM loopback cell received by the test device. ATM exchange test system. 8. The central control device, wherein a pseudo user cell is transmitted from a test device to a device under test,
6. The transmission / reception and response function verification of the activation / deactivation of the test target device is performed by transmitting the activate / deactivate cell from the test device or the test target device.
TM exchange test system. 9. The central controller transmits the pseudo user cell from the test device to the test target device, activates the line quality monitoring function of the test target device, and switches between the pseudo user cell and the test target device. A test by inserting a performance monitoring cell into the test target device, collecting reception monitoring of the cell in the test target device, collecting monitoring analysis results after the cell reception, and detecting a difference from the cell transmission result collected from the test target device. Target device performance
The reception / monitoring analysis function of the monitoring cell function is verified, on the contrary, the performance monitoring cell is inserted from the device under test to the test device, the content of the cell is analyzed by the test device, and the result is collected. 9. The ATM switch test system according to claim 8, wherein the performance monitoring cell sending function of the device under test is verified by the above.