JPS63254847A - Channel test system - Google Patents

Abstract

PURPOSE:To attain accurate test of channel by sending a caller number from an incoming terminal set to a caller terminal set via an exchange so as to detect the erroneous channel setting. CONSTITUTION:When a caller terminal circuit 1 makes a call to a predetermined incoming terminal circuit 5, an exchange 3 sets a corresponding channel 33. Then the circuit 5 reads an opposite number from an opposite number memory 6 via a control circuit 7, and a test signal of an in-band frequency in response to the number of opposite number and digit is generated from a variable frequency generator 8 and the signal is sent via an incoming subscriber line 4, the exchange 3, and a caller side subscriber line 2. Then a call number is decided by a number deciding circuit 12 detected by a frequency signal detection circuit 11 of the circuit 1 and coincidence between the result of decision and the stored value of its own number memory 13 is detected by a coincidence detector 14. The output of a coincidence signal generating circuit 15 based on the detection is fed via lines 2, 4 and the exchange 3, the circuit 5 detects an erroneous channel setting and the test of a channel is executed accurately.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a communication path test method for testing whether or not a communication path of an exchange is connected between intended terminals [Prior Art] A conventional communication path Referring to FIG. 2 which shows the configuration of the test system, the calling side terminal circuit 17 is connected to the exchange 19 through the calling side subscriber line 18t. Called terminal circuit 21, 2
3 are connected to the exchange 1 via the called subscriber lines 20 and 22, respectively.
9 is connected. In this configuration, first, the calling side terminal circuit 17 makes a call to the called side terminal circuit 21 to which the call is to be received.

When there is an incoming call to the called terminal circuit 21, the exchange 19
In this case, the correct communication path 31 shown by dots is set. After that, the signal generator 2 of the terminal circuit 21 of the incoming call 11Il
4 converts the in-band frequency test signal to the two-way four-way conversion circuit 25 and the called subscriber +1ilj! 20 =< and sends it to the exchange 19. The test signal passes through the correct communication path 31 in the exchange 19, passes through the calling side subscriber switch 18 and the two-wire/four-wire conversion circuit 26, and reaches the return circuit 27. Test canyon signal returned at return circuit 27 Two-line four-line conversion circuit 261
Calling subscriber line 1g.

Correct call path 312 in exchange 19 called subscriber i20
and the called terminal circuit 2 via the two-wire and four-wire conversion circuit 25.
The signal is received by the signal detector 30 within the signal detector 1. by this,
[Problems to be Solved by the Invention] However, in the conventional communication path testing method described above, the communication path within the exchange 19 can be tested from the calling side terminal circuit 17 to the called side terminal circuit 21. If a connection error occurs in switching equipment 19 when a call is made to 1-, the erroneous communication path 32 shown in FIG.
3 will be connected. After 7, the called terminal circuit 23
The test signal output from the signal generator 34 in the 2-4 wire conversion circuit 351 is sent to the called subscriber line 22. 'A' communication path 321 in the exchange 19; calling side subscriber line 18. The call is returned to the return circuit 27 via the two-wire/four-wire conversion circuit 26, and the call is made from the two-wire/four-wire conversion circuit 261 (1tlI subscriber line 18. The signal reaches the signal detector 36 via the four-wire conversion circuit 35t-.This means that the test was correctly completed even though the communication path 32 was incorrect.

Therefore, if a test signal is transmitted through the wrong communication path due to a connection error, there is a mechanism to detect that the test signal is not being transmitted through the correct communication path.

[Means to solve all problems]

The communication path test method of the present invention includes a calling party number storing means for storing a predetermined telephone number of a calling party subscriber, and a calling party number storing means for storing a predetermined telephone number of a calling party subscriber, and a telephone number of the calling party subscriber outputted from the calling party number storing means. a called terminal having frequency signal generation means for generating an in-band frequency signal corresponding to a telephone number; detecting the in-band frequency signal transmitted from the called terminal via a communication path of an exchange; frequency signal detection means; telephone number reproduction means for reproducing the telephone number of the calling subscriber from the output of the frequency signal detection means; self-originating number storage means for storing one's own telephone number; and said telephone number reproduction means. and a calling side terminal having a coincidence detection means for comparing the output of the means and the output of the self-number storage means and detecting a coincidence.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

Referring to FIG. 1, which shows one embodiment of the present invention, the calling terminal kL61 is connected to the exchange 3 via the calling subscriber 12t. The called side terminal circuit 5 is the called side subscriber line 4
It is connected to the exchange 3 via. In this configuration, first, the calling terminal circuit 1 makes a call to a predetermined called terminal 1 and 5 to which the call is to be received. When a call is received at the called terminal circuit 5, the correct communication path 33 is set in the exchange 3 as indicated by a dot. Thereafter, in the called terminal circuit 5, the control circuit 7 reads out the calling party's number stored in advance in the calling party's number memory 6, and the variable frequency generator 8 generates an in-band frequency corresponding to the number and number of digits of the calling party's number. The test signal is sent to the two-wire/four-wire conversion circuit 9. The test signal is for the called subscriber &! 4. It reaches the frequency detector 11 via the correct communication path 339 in the exchange 3 to the calling subscriber +11!2 and the two-wire/four-wire conversion circuit 10. From the test signal extracted by the frequency detector 11, the number determination circuit 12 determines the issued number included in the test signal. The coincidence detector 14 also compares the output of the number determination circuit 12 with the self-generated number stored in the self-number generation memory 13, and notifies the coincidence signal generation circuit 15 if they match. The match signal generation circuit 15 converts the match signal into a two-wire/four-wire conversion circuit 10. when the issued numbers match. Calling subscriber line2. The correct communication path 331 is sent to the matching signal detection circuit 16 via the called side subscriber line 4 and the two-wire/four-wire conversion circuit 9. When the coincidence signal detection circuit 16 detects a coincidence signal, it means that the correct normality of the communication path 33 is detected.

Since the self-generated number stored in the self-numbered memo 1J13 in the terminal circuit 1 does not match the number output from the number judgment circuit 12, the match generator 14 determines that there is a mismatch and detects the mismatched signal as a match signal. The signal is sent to the circuit 16.

〔Effect of the invention〕

As explained above, according to the present invention, by transmitting the calling number of the calling party from the calling terminal to the calling terminal via the call connection of the exchange, an incorrect call path is prevented from being set. It can be detected if it is snatched. As a result, the communication path can be tested accurately.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a communication path test method according to the present invention, and FIG. 2 is a block diagram of a conventional communication path test method. 1... Calling side terminal circuit, 2... Calling side subscriber line, 3... Exchange, 4... Calling side subscriber line, 5... Called side terminal circuit, 6...
...Recipient number memory, 7...Control circuit, 8.
... Variable frequency generator, 9 ... Two-wire four-wire conversion circuit, 10 ... Two-wire four-wire conversion circuit, 11.
... Frequency signal detector, 12 ... Number judgment circuit, 13 ... Self-numbering memory, 14 ...
... Coincidence detector, 15... Coincidence signal generation circuit, 16... Coincidence signal detection circuit, 33...
・Call route. Agent Patent Attorney Hara Uchi Volume/Figure No. 1

Claims (1)

[Scope of Claims] Calling party number storing means for storing a predetermined telephone number of a calling party subscriber, and corresponding to the telephone number of the calling party subscriber outputted from the calling party number storing means. a called terminal having a frequency signal generating means for generating an in-band frequency signal; and a frequency signal detecting means for detecting the in-band frequency signal transmitted from the called terminal via a communication path of an exchange. , a telephone number reproducing means for reproducing the telephone number of the calling subscriber from the output of the frequency signal detecting means; a self-originating number storage means for storing the subscriber's own telephone number; an output of the telephone number reproducing means; a calling side terminal having a match detection means for comparing the output of the self-number storage means and detecting a match;
A communication path test method characterized by comprising: