JPS63220643A - Pseudo call testing device - Google Patents

Abstract

PURPOSE:To automatically test a line transfer function by executing the pseudo call of a dial signal to designate a third line to a first line terminal and checking the action of an exchange, while a connecting speech path is formed between the first line terminal and a second line terminal. CONSTITUTION:While the connecting speech path 9ab is formed in an exchange 7, a dial signal sending circuit 15a is driven at the transmission side of a pseudo call testing device 5 and the dial signal of the circuit number (telephone C) of a transfer destination is sent to the line terminal 8a of the exchange 7. The exchange 7 sends a calling sound to the line terminal 8c of the transfer destination, the 8c side responds, a connecting channel 9ac connecting 8a and 8c in the exchange 7 is formed, and then, the pass-checking of the receiving side and transmission side of 9ac is executed. A control signal generating circuit 13a at the transmission side is driven, an outgoing/incoming converting command is sent to 8a, thereafter, when an exchange connecting circuit 10a is controlled and a loop is released, the control of 8c is changed from the incoming side to the outgoing side. Since a connecting channel 9cb is formed between 8c and 8b when on-hooking from the terminal 8a is detected by the exchange 7, the reciprocating pass-checking of 9bc is executed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pseudo call test device for testing the operation of a telephone exchange, and particularly to a pseudo call test device that has a line transfer function that can transfer a line in use to another line. This invention relates to a pseudo call testing device for testing switched equipment.

[Conventional technology] In recent years, private branch exchanges (PBXs) installed in large offices, factories, etc. have been converted to electronic exchanges, and can now have a wide variety of functions compared to crossbar type exchanges. ing. One such function is a line transfer function.

This line transfer function, as shown in FIG. During a call, a person operates extension telephone A to call extension telephone C, which also belongs to Baku, and creates a communication line shown by a dotted line between extension telephone C and external telephone B, and connects extension telephone C and external telephone. This is a function that puts telephone B into a busy state.

FIG. 6 is a time chart showing the states and operations of the three telephones A, B, and C. First, while extension telephone A and external telephone B are talking, time 1. When the caller performs a hooking operation (on/off operation of the hook switch on which the handset is placed during a short period of time) at extension A, the handset is first picked up from the exchange and transferred to extension A. The same dial tone (DT) is transmitted. Additionally, a hold tone is sent to the outside call. Then, when you dial the phone number of the forwarding destination extension C on extension A, a ring tone is sent to extension C, and extension A has a ringback tone (RBT) corresponding to the ring tone. Sent.

When the handset of extension telephone C is picked up at time t2, extension telephone A and extension telephone C become in a busy state. moreover,
When the handset of extension telephone A is put down at time t3, the hold state of external telephone B is released, and external telephone B and extension telephone C are placed on hold.
becomes busy.

In addition, if you perform a hooking operation on extension telephone △ at time t1 and then perform dial operation again, the telephone line with the original external telephone B will be restored, and the hooking operation will be resumed at time t1. After the operation, the loop is released.In other words, when you pick up the handset once, a ring tone is sent to extension phone A for a call back, and when you pick up the handset again, the call line is switched back to the original external phone B. It also has the ability to recover.

Furthermore, when dialing extension C from extension A, if extension C is busy or the handset is not picked up, if hooking is performed again, extension A and the outside line are dialed in the same manner as described above. The telephone line with telephone B is restored.

[Problems to be solved by the invention] Generally, when a new exchange is installed, it is necessary to confirm that the exchange operates normally, and a pseudo call test device is generally used for this confirmation work. In this pseudo-call test device, each terminal of the pseudo-call test device is connected to each line terminal of the exchange, and a pseudo-call signal containing the line number of the destination is sent from the calling terminal to the exchange. A calling signal is sent to the line terminal of the line number, and this calling signal is checked via the incoming terminal connected to this line terminal.

However, in such a pseudo call test device, it is impossible to check all the complicated functions that the exchange has, such as the above-mentioned line transfer function. Therefore, after testing the basic functions of the exchange using this pseudo call test equipment, when testing complex functions such as line transfer, an actual telephone is connected to each line terminal of the exchange, and the inspector tests the telephone. You need to operate it to see how it actually works.

However, when an operator manually checks the operation, it is practically impossible to test the operation of all combinations, so it is necessary to conduct a handling test.
It was difficult in terms of time to conduct a complete study.

The present invention was made in view of these circumstances, and
The purpose of this is to transfer the line by sending a pseudo call to the first line terminal with a hooking signal and a dialing signal while a connection communication path is formed between the first line terminal and the second line terminal. An object of the present invention is to provide a pseudo call test device that can automatically perform a function test.

[Means for Solving the Problems] The pseudo call test device of the present invention provides a connection channel between a first line terminal and a second line terminal. When a dial signal is input from a terminal, the operation of an exchange having a line transfer function that forms a connection communication path between the third line terminal designated by this dial signal and the second line terminal is tested. A pseudo call means for inputting a dial signal to the first line terminal in a state where a connection communication path is formed between the first line terminal and the second line terminal, and the pseudo call means. and a path check means for confirming that a connection communication path has been formed between the third circuit terminal and the second line terminal specified by the dial signal input at the terminal.

[Function] With the pseudo call test device configured as described above, the first line of the exchange is connected to the connection path formed between the first line terminal and the second line terminal. A dial signal is input to the line terminal, and it is confirmed that a connection communication path is formed between the third circuit terminal and the second line terminal designated by the input dial signal.

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

FIG. 1 is a block diagram showing a pseudo call test device according to an embodiment. A plurality of terminals 6a, 6b, (
3c is each line terminal 8'a of the exchange 7 to be tested.
, 8b, 8c. Note that dotted lines 9ab in the figure indicate connection communication paths formed within the exchange 7.

In the pseudo call test device 5, each terminal 6a, 6b is connected to each exchange side terminal of an exchange connection circuit 10a, 10b including an interface circuit and a switching circuit with the exchange 7. And this exchange connection circuit 10a, 1
The anti-exchange side terminal of 0b includes receiving circuits 12a and 12b that receive various signals input from the exchange 7 via switching circuits 11a and 11b, and a control signal generation circuit 13a that generates various control signals to be sent to the exchange 7. 13b is connected. Furthermore, an exchange connection circuit 10a.

10b includes hooking signal sending circuits 14a and 14b which output a pulse-shaped hooking signal assuming a telephone hooking operation, and a dial signal consisting of a DP double signal and a PB double signal for specifying the line number of the destination. Dial signal sending circuits 15a and 15b are connected thereto.

The signal information from the exchange 7 received by each receiving circuit 12a, 12b connected to each exchange connection circuit 10a, 10b is input to a control circuit 16 composed of, for example, a microcomputer.

Furthermore, this control circuit 16 includes each exchange connection circuit 10a.
, 10b, control signal generation circuits 13a, 13 connected to
b. ly king signal sending circuit 14a.

14b, an exchange connection circuit 10a that drives and controls the dial signal sending circuits 15a and 15b and transmits each signal;

10b to each line terminal 8a, 8b of the exchange 17.

Note that the switching circuits 11a and 11b switch the receiving circuit 12 according to a command from the control circuit 76 when a signal is input from the exchange 7.
Connected to the a and 12b sides.

Note that circuits having the same configuration as the terminals 6a and 6b are also connected to the terminal 6C.

As shown in FIG.
ab is formed, of the pair of terminals 6a and 6b connected to the line terminals 8a and 8b at both ends of the connection communication path 9ab of the pseudo call test device 5, the terminal that first sent out the dial signal is The terminal serves as the outgoing terminal, and the other terminal corresponding to the line number specified by the dial signal serves as the incoming terminal.

Next, a pseudo call test device 5 having the circuit configuration as described above will be described.
As shown in FIG.
Sequence control of signal transmission between the originating side and the terminating side of the pseudo call testing device 5 will be explained with reference to FIG. It is assumed that the outside line telephone C in FIG. 6 is connected directly to the line terminal 8C of the exchange 7.

First, the control circuit 16 drives and controls the dial signal sending circuit 15a corresponding to the line terminal 8a on the calling side to
A dial signal specifying 1A (N packing machine B9 line terminal 8b) is sent to the exchange 7 via the exchange connection circuit 10a and the terminal 6a.
As a result, this line terminal 8a
It is assumed that a connection communication path 9ab as shown in FIG. 1 is formed between the terminal 8b and the line terminal 8b corresponding to the destination number.

In this state, as shown in FIG. 2, the control signal generation circuit 13b on the receiving side (terminal 6b side) is driven and the receiving side path check request signal is sent to the line terminal 8b of the exchange l17 via the exchange connection circuit 10b and the terminal 6b. Send to. A called side path check request signal inputted from the calling side line terminal 8a via the terminal 6a and the exchange connection circuit 10a is received by the receiving circuit 12a, and the information is inputted to the control circuit 16.

Next, the originating side drives the control signal generation circuit i 3 a to send out the originating side bus check signal to the line terminal 8 a of the exchange 7 . The receiving side receives the calling side path check signal through the line terminal 8b and the terminal 6b, and the receiving circuit 12b receives and identifies the calling side path check signal and sends it to the control circuit 16. Therefore, the control circuit 16
determines that the connection channel 9ab has been correctly formed in the exchange 7 based on the information input from each receiving circuit 12a, 12b, and requests a bus check completion signal and a control signal from the called side, and a hooking signal from the called side.

The originating side that has received this signal drives the hooking signal sending circuit 14a to send out the hooking signal to the line terminal 8a of the exchange 7. Then, a dial tone (DT) is sent from the exchange 7 to the line terminal 8a on the calling side.
The calling side confirms this dial tone using the receiving circuit 12a. On the other hand, exchange I! ! For example, a predetermined hold tone such as music is sent from the call terminal 7 to the line terminal 8b on the receiving side.

Next, the calling side drives the dial signal sending circuit 15a to send the dial signal of the transfer destination line number (telephone C) to the exchange 7.
The signal is sent to line terminal 8a. The exchange 7 sends a ringing tone to the line terminal 8C corresponding to the line number of the transfer destination, and sends a ringback tone (RBT) to the line terminal 8a of the calling side.

Then, in response to the response from the line terminal 8G side, a connection communication line 9ac connecting the line terminal 8a and the line terminal 8C in the exchange 7
Once formed, a path check is performed on the incoming and outgoing sides of this connection channel 9ac in the same manner as in the previous step.

Then, the control signal generation circuit 13a on the transmitting side is driven,
After sending a calling/terminating call conversion command to the line terminal 8a of the exchange 7 to switch between the calling side and the called side for the line terminal 8C, the calling side exchange connection circuit 10a is controlled to open the loop. In other words, put down the handset. Then, the control of the line terminal 8G changes from the receiving side to the calling side.

When the on-hook from the line terminal 8a is detected by the exchange 7, a connection communication path 9cb is formed between the communication line 8C and the communication line 8b. Round-trip pass checks will be carried out.

When the above bus check processing is completed, a termination signal is sent from the originating side, thereby terminating the test of the transfer function of this exchange.

FIG. 3 is a diagram showing sequence control between the calling side and the called side when the transfer operation is stopped midway.

That is, when the line terminal 8a and the line terminal 8b are connected by the connection communication path 9ab, as shown in the figure, a path check is executed from the called side 2 and the calling side, and the first hooking signal indicating the start of transfer is sent from the calling side. Will it be exchanged if I send it out? 1!7 sends a hold signal to the receiving side (line terminal 8b). and,
When the originating side receives the dial tone (DT) from the exchange 7, it sends out a second dialing signal indicating that the transfer is cancelled. Then, the exchange 7 restores the original connection path 9ab.

Then, a path check is executed for this connection channel 9ab.

FIG. 4 is a diagram showing still another sequence control between the calling side and the called side when the transfer operation is stopped midway.

That is, as in FIG. 3, the line terminal 8a and the line terminal 8
When B is connected to the connection channel 9ab, the receiving side 2 performs a path check from the calling side as shown in the figure, and when the calling side sends a hooking signal indicating the start of transfer, the exchange 7 connects the receiving side to the line 9ab. A hold signal is sent to terminal 8b).

The calling party then dials 1 (DT) from exchange 7.
> is received, the loop is released. In other words, it is assumed that the handset is placed. Then, from exchange 7 to the calling side (
A calling signal is sent to line terminal 8a). After receiving the ringing tone, the calling party closes the loop after a certain period of time and responds. That is, assume that the handset is picked up again.

The exchange 7 that detected the response restores the original connection path 9ab. Then, a path check is executed for this connection channel 9ab.

With the pseudo call test device configured in this way, each telephone A, B, and C can be operated as shown in Figure 5 and J in Figure 6 to change the connected call line to the third one. The response signals of the exchange 7 at all stages of the line transfer function, such as transfer to the line, and the connection path 9a formed at each point in time.
It is automatically tested whether or not b, 9 ac, and 9 cb are valid.

In this way, even if the exchange has a transfer function, the operation of the exchange can be automatically tested without relying on human intervention, so the efficiency of testing the exchange can be greatly improved. Further, since the operation test of all combinations of line transfers can be performed across all line terminals, the test can be performed more strictly.

The pseudo call test device of the present invention can be used not only to test private branch exchanges (PBXs) with a transfer function as described above, but also to test key telephones with a transfer function. It is possible.

[Effects of the Invention] As explained above, according to the present invention, the third line is connected to the first line terminal while the connection communication path is formed between the first line terminal and the second line terminal. By making a pseudo call using a dial signal specifying the line transfer operation, the operation of the exchange at each stage of line transfer operation is checked. Therefore, it is possible to automatically test the line transfer function, and to test the exchange more efficiently and reliably.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a pseudo call test device according to an embodiment of the present invention, FIGS. 2 to 4 are sequence control diagrams showing the operation of the same embodiment, and FIG. 5 is a general FIG. 6, which is a diagram showing a private branch exchange, is a time chart explaining the transfer function of the exchange. 5... Pseudo call test device, 8a, 8b, 8c... Line terminal, 9ab... Connection communication path, 10a, 10b...
Exchange connection circuit, 12a, 12b...reception circuit, 13
a. 13b... Control signal generation circuit, 14a, 14b...
Hooking signal sending circuit, 15a, 15b...Dial signal sending circuit, 16...Control circuit.

Claims (1)

[Claims] When a dial signal is input from the first line terminal in a state where a connection communication path is formed between the first line terminal and the second line terminal, this dial signal is A pseudo call test device for testing the operation of an exchange having a line transfer function that forms a connection communication path between a specified third line terminal and the second line terminal, the first line terminal; and a pseudo call means for inputting a dial signal to the first line terminal in a state where a connection communication path is formed between the first line terminal and the second line terminal, and designation of the dial signal input by the pseudo call means. 1. A pseudo call testing device comprising path check means for confirming that a connection communication path is formed between the third circuit terminal and the second line terminal.