JPS62144452A - External timer simulating system - Google Patents

Abstract

PURPOSE:To prevent an electronic exchange system from being mis-judged to be faulty by stopping pseudo time information generated by a pseudo call generating system while a central processing unit of the electronic exchange system stops its operation. CONSTITUTION:When a clock generator 14 sends a clock signal ck of a prescribed period to a central processing unit 22 via a clock reception section 23, the unit 22 executes a clock interruption processing and allows a time generation control section 223 to check a logical value of an operation stop control signal (s) sent to a central processing unit 13 by an operation stop control section 222. As the result of check, when the signal (s) is set to logical '0', the control section 223 discriminates that the unit 13 is in operation and makes a time information generating section 221 execute the generation processing of pseudo time information tc. On the other hand, as the result of check, when the signal (s) is set to logical '1', the control section 223 discriminates that the unit 13 is in the stop state and stops making the generation section 221 apply the generating processing of the pseudo time information tc.

Description

[Detailed Description of the Invention] [Summary] In a pseudo call generation system that generates pseudo calls to be added to an electronic switching system, while the pseudo call generation system stops the operation of the electronic switching system, the creation of pseudo time information is also stopped. This prevents discrepancies with the time information in the electronic switching system after operation resumes.

[Industrial application field]

The present invention relates to an improvement of an external timer simulation method in a pseudo call generation system that generates test pseudo calls for an electronic switching system.

In electronic exchange systems, for processing call charges, etc.
It has a function to count clock signals of a predetermined period generated by the built-in clock generator and create time information, and also has a function to calibrate the created time information by comparing it with reference time information input from an external source. Equipped with

On the other hand, an original image call generation system is also used to test the operating state of the electronic switching system under overload conditions.

It is desirable for such an original image call generation system to also create the reference time information mentioned above and add it to the electronic switching system in a pseudo manner so that the time information calibration function can be tested.

[Conventional technology]

FIG. 4 is a diagram showing an example of a conventional external timer simulating method.

In FIG. 4, the electronic switching system 1 includes a communication path network 11
, a communication line interface 12, a central processing unit 13, and a clock generator 14. The central processing unit 13 further includes a time information creation section 131 and a time information calibration section 132.

The central processing unit 13 detects a call arriving from a subscriber line 15 accommodated in the communication path network 11 or a trunk line 16 connecting with another electronic switching system, and processes the call via the communication path system interface 12. Various control commands (hereinafter referred to as sp orders) are given to the network 11 to control the setting or release of the communication path, and the control operation is confirmed by response information returned from the communication path network 11 within a predetermined time.

On the other hand, the time information creation unit 131 counts the clock signal ck generated by the clock generator 14 to create time information ta, which is used for billing processing, statistical data collection processing, and the like.

Further, the time information calibrating unit 132 calculates the reference time information tb distributed from the outside (for example, from a station where the reference time information is generated) via the middle line 16 at predetermined intervals (for example, 0.5 second intervals).
Time information t received via the communication path network 11 and communication path system interface 12 and created by the time information creation unit 131
, a, and if they do not match, the time information 111ta is calibrated and an abnormality in the time information creation section 131 is displayed.

In order to test the overload characteristics of the central processing unit 13, a pseudo call generation system 2 is also installed, and the pseudo call generation system 2 is connected to the communication line interface 12 instead of the communication line network 11.

The pseudo call generation system 2 has a communication path system interface 21
, a central processing unit 22 and a clock receiving section 23.

The central processing unit 22 generates a pseudo call arriving from the subscriber line 15 and the trunk line 16, sends it to the central processing unit 13 via the communication line interfaces 21 and 12, and also sends a call from the central processing unit 13 to the communication line. system interface 1
2 is received via the communication path system interface 21, response information to be returned by the communication path network 11 within a predetermined time is created in a pseudo manner, and the communication path system interfaces 21 and 12 Central processing unit 1 via
Return it to 3.

The central processing unit 22 also receives a clock signal ck of a predetermined period (for example, 4 millisecond period) generated by the clock generator 14.
is received via the clock receiving unit 23 and counted by the time information creating unit 221 to create pseudo time information tc that simulates the reference time information tb. Communication path system ink faces 21 and 1
In addition to the central processing unit 13 via 2, the time information calibration unit 1
32 tests are also possible.

Note that the central processing unit 22 is slower than the central processing unit 13.
is used, when performing an overload test by applying a large amount of pseudo load to the central processing unit 13, response information cannot be returned within a predetermined time to a large number of sp orders transmitted from the central processing unit 13. It disappears.

In such a case, the operation stop control unit 222 monitors the queue length of SP orders transmitted from the central processing unit 13, and if more than a predetermined number of SP orders are connected to the queue, the The operation stop control signal S transmitted to the processing unit 13 is set to logic "1" to temporarily stop the operation of the central processing unit 13. While the central processing unit 13 is stopped, the central processing unit 22 is connected to the queue.
S that executes processing for p orders and is connected to the queue
After the number of P orders is reduced to a predetermined number or less, the central processing unit 1
The operation stop control signal S transmitted to the CPU 3 is set to logic "0", and the central processing unit 13 is caused to resume operation.

While the operation stop control signal S is set to logic "1", the time information creation unit 131 also stops creating the time information ta, so the time information ta is not updated.

However, the clock generator 14 has a logic “stop” control signal S.
1", in order to continue supplying the clock signal ck, the time information creation unit 221 continues to generate the pseudo time information t.
Continue the fVitc creation process.

Therefore, after the central processing unit 13 that has once stopped operating resumes its operation, the time information calibration unit 132
When the pseudo time information tc transmitted from the time information ta is compared with the time information ta, they do not match, and the time information creation unit 131 is mistakenly recognized as abnormal.

[Problem that the invention seeks to solve]

As is clear from the above explanation, in the conventional external timer pseudo system, the central processing unit 22 is connected to the central processing unit 13.
Even though the time information ta created by the time information creation unit 131 is stopped when the operation of The unit 132 is the time information creation unit 1,
There was a risk that 31 would be mistaken for an abnormality.

[Means for solving problems]

FIG. 1 is a diagram showing the principle of the present invention.

In FIG. 1, 1 is an electronic switching system to be subjected to an overload test, 110 is a communication line system device, 13 is a central processing unit, 14 is a clock generator that generates a clock signal ck,
131 is a time information creation unit that creates time information ta;
Reference numeral 2 denotes a time information calibration unit that compares and calibrates time information ta with external time information tb.

Reference numeral 2 denotes a pseudo call generation system that generates a pseudo call that loads the electronic exchange system, 221 a time information creation unit that creates pseudo time information tc, and 222 an operation stop that transmits an operation stop control signal S to the central processing unit 13. This is the control section.

Further, within the pseudo call generation system 2, a time creation control section 223 according to the present invention is provided.

[Effect]

The time creation control unit 223 stops the pseudo time information tc creation process of the time information creation unit 221 while the operation stop control unit 222 stops the operation of the central processing unit 13. Therefore, the pseudo time information tc matches the time information 11ta,
Not updated.

Therefore, after the operation stop control unit 222 causes the central processing unit 13 to resume operation again, the pseudo time information [C that the time information creation unit 221 transmits to the central processing unit 13 will match the time information ta, and the time information The calibration unit 132 determines that the time information creation unit 131 is normal, and misidentification based on the mismatch between the time information ta and the pseudo time information tc is prevented.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a diagram showing an external timer simulation method according to an embodiment of the present invention, and FIG. 3 is a diagram showing an example of the time information creation control process in FIG. 2. Note that the same reference numerals refer to the same objects throughout the plan.

In FIG. 2, a time creation control unit 223 is provided within the central processing unit 22 of the pseudo call generation system 2.

In FIGS. 2 and 3, the clock generator 14 clocks at a predetermined frequency! The clock signal ck of tJI (4 millisecond period in the example) is sent to the central processing unit 22 via the clock receiving section 23.
, the central processing unit 22 executes a known clock interrupt process (step S1 in FIG. 3), and transmits the operation stop control signal to the time creation control unit 223 from the operation stop control unit 222 to the central processing unit 13. The logical value of S is checked (step S2).

As a result of the inspection, if the operation stop control signal S is set to logic "0" (step S3), the time creation control unit 2
23 determines that the central processing unit 13 is in an operating state, and causes the time information creation unit 221 to execute the process of creating pseudo time information tc (step S4).

On the other hand, if the operation stop control signal S is set to logic "1" as a result of the inspection, the time creation control section 223 determines that the central processing unit 13 is in the stopped state, and the time information creation section 223 determines that the central processing unit 13 is in the stopped state.
21 to create the pseudo time information tc (step S3).

As is clear from the above description, according to the present embodiment, while the central processing unit 13 is not operating, the time information creation section 131 can create time information ta in the same way as when the time information creation section 131 has stopped the time information ta. Since the section 221 also stops the pseudo time information tc, after the central processing unit engineer 3 resumes operation, the time information calibration section 132 checks whether the pseudo time information tc and the time information ta transmitted from the central processing unit 22 are It is determined that they match, and the time information creation unit 131 is prevented from being mistakenly recognized as abnormal.

Note that FIGS. 2 and 3 are only one embodiment of the present invention, and for example, the configurations of the electronic switching system 1 and the pseudo call generation system 2 are not limited to those shown in the figures, and other configurations may be used. Many modifications may be considered, but the effects of the present invention remain the same in any case.

〔Effect of the invention〕

As described above, according to the present invention, in the pseudo call generation system, while the central processing unit of the electronic switching system stops operating, the pseudo time information created by the pseudo call generation system also stops, so even after the operation resumes, the electronic switching system The time information created by the system and the pseudo time information created by the pseudo call generation system will match, and the electronic switching system will be prevented from being mistakenly recognized as abnormal.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is a diagram showing an external timer simulation method according to an embodiment of the present invention, and FIG.
A diagram illustrating an example of the time information creation control process in Figure 4.
The figure shows an example of a conventional external timer simulating method. In the figure, l is an electronic switching system, 2 is a pseudo call generation system, 11 is a communication line network, 12 and 21 are communication line interfaces, 13 and 22 are central processing units, 14 is a clock generator, and 15 is a subscriber line. , 16 is a trunk line, 23
110 is a communication path system device; 131 and 221 are time information creation units; 132 is a time information calibration unit;
222 is an operation stop control unit, 223 is a time creation control unit, C
k is a clock signal, Sl to S4 are steps, S is an operation stop control signal, ta is time information, tb is a base''; Mine 2 Figure 2 ts Is Kuru Ginki Jitsusaku Besei f Trunk Pass No. 3
figure

Claims (1)

[Claims] A communication path system device (110), a central processing unit (13),
a clock generator (14), and creates time information (ta) in the central processing unit (13) based on a clock signal (ck) supplied from the clock generator (14). (131); and a time information calibration unit (132) that calibrates the time information (ta) generated by the time information creation unit (131) using reference time information (tb) supplied from the outside. System (1
), generates a pseudo load to be applied to the central processing unit (13), receives the clock signal (ck) generated by the clock generator (14), and receives the reference time information (
a time information creation unit (221) that creates pseudo time information (tc) that simulates time information (tb); and a time information creation unit (221) that creates pseudo time information (tc) that simulates time information (tb); , a pseudo call generation system (2) comprising an operation stop control unit (222) that temporarily stops the operation of the central processing unit (13) when the load generation request amount reaches a predetermined value. , the operation stop control section (222) controls the central processing unit (1
While the operation of 3) is stopped, the time information creation section (
221). An external timer pseudo method characterized by comprising a time creation control unit (223) that stops the pseudo time information (tc) creation process of step 221).