JPS6281156A - Subscriber circuit test system - Google Patents

Abstract

PURPOSE:To conduct the test of a subscriber circuit by a package itself by generating a subscriber circuit operating control signal so as to supply the signal to each subscriber circuit and connecting a subscriber circuit sending a dial pulse and a subscriber circuit corresponding to a count in a package through loopback. CONSTITUTION:A package 100 mounting plural subscriber circuits 1 is provided with a control signal generating means 200 generating a subscriber circuit operating control signal when the package 100 is not connected to a channel network and supplying the signal to each subscriber circuit 1, a dial pulse detection means 300 detecting and counting a dial pulse sent from each subscriber circuit 1 and a loopback path 400 connecting a subscriber circuit 1 sending the dial pulse and a subscriber circuit 1 corresponding to the count counted by the dial pulse detection means 300. Thus, the loopback talking is attained between the subscriber circuits in the package and the package itself confirms the normality of the subscriber circuits.

Description

[Detailed Description of the Invention] [Summary] When the package is not connected to the communication path network in a package mounting a plurality of subscriber circuits, a control signal for operating the subscriber circuits is created and each subscriber circuit is connected to the package. and detect and count the dial pulses sent out from each subscriber circuit,
By connecting the subscriber circuit that sent out the dial pulse and the subscriber circuit that corresponds to the count value within the package, it is possible to test the subscriber circuit with a single package.

[Industrial application field]

The present invention relates to a method for testing subscriber circuits in a package implementing multiple subscriber circuits.

In a digital exchange, the subscriber circuit accommodating the subscriber line is provided with various functions such as power supply, calling signal sending, subscriber current monitoring, two-wire and four-wire conversion, code decoding, and testing.

Further, since subscriber circuits are used in large quantities, miniaturization is attempted by mounting a plurality of subscriber circuits in one package.

In order to maintain the reliability of the digital exchange, it is strongly desired to be able to easily confirm the normality of each subscriber circuit.

[Conventional technology]

FIG. 3 is a diagram showing an example of a conventional subscriber circuit testing method.

In FIG. 3, in order to test the function of the subscriber circuit 1, the central controller 3 transmits a test instruction to the subscriber circuit 1 to be tested via the communication path ¥1fii2 and sets it to the test state. At the same time, the test switch 4 is controlled to connect the subscriber circuit 1 to be tested to the test bag W5, and the test device 5 is activated to perform incoming and outgoing calls to the subscriber circuit 1, thereby checking the normality of the subscriber circuit 1. Check.

[Problem that the invention seeks to solve]

As is clear from the above explanation (in conventional subscriber circuit testing methods, the subscriber circuit to be tested is the communication path!
It is necessary to perform the test under the control of the central control unit 3 while connected to the communication path y12 and the central control unit 3.
It was not possible to conduct tests independently.

[Means for solving problems]

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

In FIG. 1, in a package 100 in which a plurality of subscriber circuits 1 are mounted, when the pancase 100 is not connected to a communication path network, a control signal for subscriber circuit operation is created and sent to each subscriber circuit l. Supply control signal generation means 2
00, dial pulse detection means 300 that detects and counts dial pulses sent from each subscriber circuit 1, subscriber circuit 1 that sent the dial pulses, and a subscription corresponding to the counted value counted by dial pulse detection means 300. A loopback path 400 is provided to connect to the user circuit 1.

[Effect]

That is, according to the present invention, it is possible to call back between the subscriber circuits in the package even when the package is not connected to the communication network, and the normality of the subscriber circuits can be confirmed with the package itself, and the digital exchange Improved reliability.

〔Example〕

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

FIG. 2 is a diagram showing a subscriber circuit testing method according to an embodiment of the present invention. Note that the same reference numerals indicate the same objects throughout the figures.

In FIG. 2, a control circuit 6 commonly controls five sets of subscriber circuits 11 to 1n mounted in the same package.
Inside, a control signal generation section 61 and a dial pulse detection section 62 are provided as control signal generation means 200 and dial pulse detection means 300, respectively, and a return route section 7 is provided as a return route 400.

In FIG. 2, when the package is connected to a communication network (not shown), the control circuit 6 controls each subscriber circuit 11 to 1n under the control of the central control device 3 (not shown). Various control signals are supplied to the calling signal sending section, power supply monitoring section, two-wire/four-wire converting section, code decoding section, etc., to operate the subscriber circuits 11 to 1n.

When the package is not connected to the communication path network, the control signal generation section 61 generates the control signal and supplies it to each subscriber circuit 11 to 1n.

In such a state, when a test telephone is connected to an arbitrary subscriber circuit (for example, 11) and a call is made in order to confirm the normality of the package, the power supply monitoring section detects the call and sends a call to the control circuit 6. introduce.

The control circuit 6 that receives the call detection from the subscriber circuit 11 activates the dial pulse detection section 62 .

Then from the test phone to other subscriber circuits (e.g. In)
When a number corresponding to (for example, n) is dialed, the power supply detection circuit of the subscriber circuit 11 detects a dial pulse and transmits it to the control circuit 6.

In the control circuit 6, a dial pulse detection section 62 detects the transmitted dial pulse and counts dialed numbers.

When the counting of the dialed number n is completed, the control circuit 6 controls the return path section 7 to energize the changeover switches 71 and 7n corresponding to the calling subscriber circuit 11 and the subscriber circuit 1n corresponding to the dialed number.

As a result, subscriber circuits 11 and 1n are interconnected via connection path 70.

In this state, when the test telephone connected to the subscriber circuit 1n is brought into the answering state, test telephone calls can be made between the test telephones connected to the subscriber circuits 11 and 1n.

As described above, it becomes possible to test the functions of the power supply monitoring circuit, two-wire four-wire circuit, code decoding circuit, etc. of the subscriber circuits 11 and 1n.

By executing the above process for each subscriber circuit 11 to 1n, the normality of each subscriber circuit 11 to 1n can be confirmed without the package being connected to the communication network.

As is clear from the above description, according to this embodiment, the normality of each subscriber circuit 11 to 1n in the package can be confirmed even when the package is not connected to the communication network.
The reliability of the digital exchange is improved.

It should be noted that FIG. 2 is merely one embodiment of the present invention, and the configurations of the subscriber circuits 11 to In, for example, are not limited to those shown, and many other modifications may be considered. ,
In either case, the effects of the present invention remain the same. Furthermore, the connection by the return route section 7 is not limited to the test connection,
When the package is not connected to the communication path network, it is also possible to connect the subscriber telephone phones accommodated in each subscriber circuit 11 to 1n, but in such a case, the present invention also applies.
゛The effects of the invention remain the same.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to test the normality of a subscriber circuit using a single package, and the reliability of the digital exchange is improved.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is a diagram showing a subscriber circuit test method according to an embodiment of the present invention, and FIG. 3 is a diagram showing an example of a conventional subscriber circuit test method. . In the figure, 1 and 11 to 1n are subscriber circuits, 2 is a communication network, 3 is a central control unit, 74 is a test switch, and 5
6 is a test device, 6 is a control circuit, 61 is a control signal generator, 6
2 is a dial pulse detection section, 70 is a connection path, 71 to 7
n is a changeover switch, 100 is a package, 200 is a control signal generation means, 300 is a dial pulse detection means, 40
0 is the turning back and the beginning of the month. 1 Prisoner 2 Group

Claims (1)

[Claims] A package (100
), when the package (100) is not connected to a communication network, control signal generating means (200) generates a control signal for subscriber circuit operation and supplies it to each subscriber circuit (1).
), dial pulse detection means (300) that detects and counts dial pulses sent out from each subscriber circuit (1), and the subscriber circuit (1) that sent out the dial pulses and the dial pulse detection means (300); 300) which connects the subscriber circuit (1) corresponding to the counted value counted by
400).