JPS6268355A - Subscriber line test system - Google Patents

Abstract

PURPOSE:To detect earlier a suspected faulty package and to improve the efficiency of fault detection by providing a control means referencing the display of a display means and changing the test mode of the test means of a subscriber line. CONSTITUTION:When an outgoing/incoming call takes place in the subscriber line, the display is set to a display means 1. The control means 3 references the content of the display means 1 to change the test mode of a test means 2. When the test means 2 tests the subscriber line periodically and the outgoing/ incoming call takes place in the periodical test interval in the subscriber line, the test of the subscriber line is skipped. Thus, the test interval of the subscriber lines not skipped is reduced dynamically so as to detect a suspected faulty package earlier and to improve the fault detection efficiency.

Description

[Detailed Description of the Invention] [Summary] The presence or absence of incoming/outgoing calls is displayed for each subscriber line, and the testing mode of the subscriber line testing means is changed based on the display, thereby achieving early detection and detection efficiency of suspected failure pancakes. We are working to improve this.

[Industrial application field]

The present invention relates to a subscriber line testing system, and more specifically, to a subscriber line testing system in which the testing mode of a subscriber line testing means is changed depending on whether or not a call is being sent or received on the subscriber line.

In telephone exchanges, etc., automatic tests of subscriber lines are periodically performed to detect failures occurring in subscriber lines at an early stage, and to prevent problems caused by such failures.

It is important that such subscriber line testing be conducted efficiently in order to fully achieve the purpose of the testing.

[Conventional technology]

In conventional automatic subscriber line testing, subscriber lines are tested by setting only empty/occupied judgment criteria for testing all installed subscriber lines/lines.

(Problem to be solved by the invention) As a result, tests are conducted even on circuits that are not abnormal, which not only hinders the improvement of fault detection efficiency but also makes it difficult to detect suspected faulty packages. There will be cases where this cannot be done at an early stage.

The present invention was created in view of the above problems, and an object of the present invention is to provide a subscriber line testing method that can achieve early detection of suspected faulty packages and improvement of fault detection efficiency.

[Means for solving problems]

FIG. 1 shows a block diagram of the principle of the present invention. The present invention uses a subscriber line testing method for an exchange, and includes a display means 1 for displaying the presence or absence of call origination/reception for each subscriber line;
The control means 3 changes the testing mode of the subscriber line testing means 2 with reference to the display.

(Operation) When an outgoing/incoming call occurs on the subscriber's line, its display is set on the display means 1.The control means 3 refers to the contents of the display means 1 and changes the test mode of the test means 2.For example, the test When the means 2 periodically tests a subscriber line, if the subscriber line has a call originating/terminating within the periodic test interval, the test of the subscriber line is skipped.

Thus, the test interval of subscriber lines that are not skipped is dynamically shortened, and early detection of suspected faulty packages and improved fault detection efficiency can be achieved.

[Example] FIG. 2 shows an example of a configuration for implementing the present invention. In this figure, 10 is a subscriber telephone, 1 is a subscriber circuit (LC),
12 is a line processor (L) that controls the subscriber circuit 11;
13 is a network, 14 is a common control unit (CC
), 15 is a main memory (MM), which stores bits corresponding to each subscriber line (hereinafter referred to as test terminal display (
TST) bit. ) is assigned to indicate whether there is a call originating or receiving a call from that subscriber line. Also, a commonly used subscriber line testing means is incorporated into the above configuration.

A test embodiment of the present invention under this configuration will be explained.

When the subscriber goes off-hook (■ in Figure 3), LPR12
sends the subscriber accommodating location information and offline information to the Z software 13 (■ in FIG. 3).

The network 13 notifies the common control unit 14 of this information (■ in FIG. 3). In response to the subscriber accommodation location information, the common control unit 14 performs necessary control information processing for telephone calls and address calculation processing for the corresponding TST bit, and also sets the TST bit in the main storage device 15 from "1" to "0". to (
■, ■ in Figure 3).

Further, when the control for receiving a call as described above is entered, the common control unit 14 sends a subscriber ringing order to the LPR 12 on the receiving side (■ in FIG. 4).

The network 13 sends the receiving subscriber accommodation location information to the receiving side LPR 12' (■ in FIG. 4).

The receiving side LPR 12 drives the ringer under the SD control of the receiving subscriber (■ in FIG. 4). The called subscriber 10' is then called (■ in FIG. 4). In response, when the called subscriber responds by turning off (■ in Figure 4), the subscriber response information is transferred from the called LPR 12' to the network 1.
3 (■ in Figure 4). The common control unit 14, which receives this information via the network 13, calculates the TST bit address corresponding to the called subscriber, and sets the TST bit to “l”.
"-'0".

A periodic test of the subscriber line is performed regardless of the setting of the TST bit, and during the test, the TST bit is referenced as follows to control the test mode. .

Prior to entering the test of each subscriber line, the TST bit address for the subscriber is determined (Sl in Figure 5).
. The TST bit is read and it is determined whether it is "0" (32 in FIG. 5). .

If it is not 0'', i.e., there were no calls made or received during the test interval, then the subscriber's empty/1o
If the ck out determination is also made and the determination is affirmative, a test of the subscriber line is performed (34 in FIG. 5).

After termination, set the TST bit for the subscriber line to 61″
(35 in Figure 5).

Conversely, if TST Bift is "0", testing of the corresponding subscriber line is skipped. Thereby, the test interval of each subscriber line can be dynamically shortened, and early detection of suspected faulty packages and improvement of fault detection efficiency can be achieved.

If the time at which the above-mentioned initialization or skipping is performed has not reached the test end time, calculate the TST bit address corresponding to the next subscriber line under test (36 in Figure 5). The process returns to step 82 to continue the predetermined test.

It should be noted that the present invention is not specific to any testing technique for subscriber lines, and can be applied to that testing technique. Further, although the above embodiment relates to a telephone exchange system, the present invention is not limited to this. Further, the change in the test mode may be other than a simple skip.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to detect a suspected faulty package early and to improve the efficiency of fault detection.

[Brief explanation of drawings]

Figure 1 is a block diagram of the principle of the present invention. Figure 2 is a diagram showing an embodiment of the present invention. Figure 3 is a diagram illustrating the TST bit setting mode when a subscriber makes a call. Figure 4 is a diagram showing a subscriber's incoming call. FIG. 5 is a flowchart for explaining the test aspect of the present invention. In FIG. 1, 1 is a display means, 2 is a test means, and 3 is a control means. Figure 1 Honko Sun Moon 3 Figure 4 illustrating the TST hit setting mode when
figure

Claims (1)

[Claims] In a subscriber line testing system for an exchange, there is a display means (1) for displaying the presence or absence of incoming/outgoing calls for each subscriber line; 1. A subscriber line testing system characterized by comprising: a control means (3) for changing the testing mode of a line testing means (2).