JPS63153944A - Line test system - Google Patents

Abstract

PURPOSE:To make the toll of a line unnecessary, by judging the normality of the line by detecting a call signal due to an outgoing call. CONSTITUTION:The outgoing call is issued from the transmission part 310 of a host computer 200 or a telephone set 225, and the detection and the count of the call signal for the outgoing call are performed at a detecting part 330 without connecting the line by the control of a main control part 361. When the call signal is detected, it is judged that the line is normal.

Description

[Detailed Description of the Invention] [Summary] When testing whether or not the t1 line is normal in the line test method, a calling means makes a call, and a calling signal from the calling is detected by a calling signal detecting means. By detecting this and determining that the line is normal, it is possible to perform a line test that does not require line usage charges.

(Industrial Application Field) The present invention relates to a line test method for testing whether or not a line is properly connected, for example, in a communication system connected via a public line.

[Conventional technology]

In a system in which a host computer and a terminal are connected via a line, it is sometimes necessary to check whether the line connection is performed normally. For example, a line test may be conducted periodically or when an abnormality occurs in system data communication.

To test a line, a terminal would make a call to a host computer and confirm that the host computer received the call, or vice versa. Furthermore, when a host computer is connected to multiple lines, calls are received in response to calls made by the host computer itself.

In this way, normal systems do not have a dedicated circuit for testing the line, so they make a call, connect the line, and confirm that the other party has answered at T11! I was conducting a line test by confirming this.

[Problem that the invention seeks to solve]

By the way, in the above-mentioned conventional system, since a line is connected to perform a line test, there is a problem in that a line usage fee is incurred as in the case of data communication.

The present invention was created in view of these points, and an object of the present invention is to provide a line test method that does not require line usage charges.

[Means for solving problems]

FIG. 1 is a block diagram of the principle of the line test method of the present invention.

In the figure, calling means 111 makes a call to test whether the line is normal or not.

The calling signal detecting means 131 detects a calling signal generated by the calling means 111 .

The line determining means 151 determines whether the line is normal based on the calling signal detected by the calling signal detecting means 131.

Therefore, the circuit as a whole is configured to test the line by detecting a paging signal for a call originating from the calling means 111.

[For production]

A calling means 111 makes a call, and a calling signal detecting means 131 detects a calling signal for the calling.

The line determining means 151 determines that the line is normal when the calling signal detecting means 131 detects a calling signal.

In the present invention, since it is determined from the calling signal detected by the calling signal detecting means 131 that the line is normal, there is no need for line usage charges.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 2 shows the overall configuration of an embodiment to which the line test method of the present invention is applied. Further, FIG. 3 is a detailed configuration diagram of the embodiment.

1, . and -], and the corresponding relationship between the embodiments of the present invention and FIG.

The calling means 111 includes a transmission control section 311. Dial sending unit 313. Telephone number storage section 315. This corresponds to the telephone 225.

The calling signal detection means 131 includes the calling signal control section 331
．． This corresponds to the detection side<1'J section 351.

The line determining means 151 uses a timer 333. counter 335
．． Detection control unit 351. It corresponds to the main control section 361.

Embodiments of the present invention will be described below on the assumption that there is a correspondence relationship such as the following.

In FIG. 2, two modem devices 221 and 241 are connected to a host computer 200. One modem 221 is connected to an exchange 291 via a network control device 223 and a public line, and the other modem 241 is connected to an exchange 6291 via a network control device 243 and a public line. A telephone R225 for making manual calls is connected to the network control device 223. In addition, the terminal 261 includes a modem device 2632 and a control device 265.
and is connected to exchange fff1291 via a public line.

FIG. 3 shows the detailed configuration of the host computer 200. In FIG. 3, host computer 200 includes main controller 361. Transmission unit 310. It consists of a detection section 330 and a display 363.

The main control section 361 is connected to the transmitting section 31O9 detection section 330 and the display 363, and the main control section 361 controls them.

The transmitter 310 includes a transmitter controller 311. Dial sending section 3
13. to the talk number storage unit 315. It consists of a signal sending section 317. The transmission control section 311 includes a dial sending section 31
3. A telephone number storage section 315 and a signal transmission section 317 are connected. Furthermore, the signal sending section 317 is connected to the modem device 221.
The dial sending section 313 is connected to the network control device 223.

The detection unit 330 includes a detection control unit 351. Calling signal control section 331. Timer 333. It consists of a counter 335. The detection control section 351 includes a calling signal control section 331. Timer 333. A counter 335 is connected, and further,
The calling signal control section 331 is connected to the modulation/demodulation device 241. Further, the detection control unit 351 is connected to the modulation/demodulation device 221 and receives and receives signals from the modulation/demodulation device 221.

Note that the modem 221. y4 control device 223 or modem device 241. The y4 controller 243 is used for transmitting and receiving data, but in the embodiment shown in FIG. 3, the modulator/demodulator 221. The Wi control device 223 is used for transmission, and the modem device 241 . The network control device 243 will be explained as a receiving device. Furthermore, in the configuration of the host computer 200 shown in FIG. 3, components not related to the present invention (input/output devices, external memory, etc.) are omitted.

l-Great pilgrimage ■Osaku FIG. 4 is an explanatory diagram of the operating procedure of a line test.

Now, from the host computer 200 to the modem device 221
．． A call is made via the y1 control device 223, and the modem 241. It is assumed that a calling signal is detected through the modulation/demodulation device 241, and that the telephone number of the called party is already stored in the telephone number storage section 315. It is also assumed that the modulation/demodulation device 221 has a function of detecting that the line is in use and sending a signal to the host computer 200.

Hereinafter, reference will be made to FIGS. 2 to 4.

First, the main control unit 361, via the detection control unit 351, sets the value N of the counter 335 for counting the calling signals.
is set to "O" (step 411).

Next, the main control section 361 sends an instruction for automatic calling to the transmission control section 311. The transmission control section 311 calls up the telephone number stored in the telephone number storage section 315 and inputs the telephone number into the dial sending section 313 . Dial sending unit 31
Step 3 transmits a dial signal corresponding to the input telephone number to the network control device 223 to make a call (Step 4
12).

The transmission control 11 section 311 sends an instruction signal to the main control section 361 when the dial signal sending section 313 finishes sending out the dial signal. The main control unit 361 starts the timer 333 via the detection control unit 351 (step 413
).

Next, the detection control unit 351 performs a predetermined period of time (for example, 30 seconds)
It is determined whether or not the period has elapsed (step 414). 30
If seconds have not elapsed, a negative determination is made, and then a determination is made as to whether or not the line is in use (step 415).

When the line is in use, the modem 221 sends a busy signal to the detection control section 351, and the detection control section 351 receives and receives the busy signal to detect whether the line is in use.

When detection control section 351 detects that the line is in use, it makes an affirmative determination in step 415 and transfers the busy signal to main control section 361 . The main control unit 361 sends an instruction to the display 363, and the display 363 displays "
"Line in use" is displayed (step 420). Then, the line is disconnected (step 422), and the process ends.

If the line is not in use, a negative determination is made in step 415, and then the detection control unit 351
31 detects a paging signal (step 416).

If no calling signal is detected, a negative determination is made in step 416, and a determination is made as to whether 30 seconds have elapsed (step 4).
14), Determine whether the line is in use (step 4)
15).

When the call signal control unit 331 detects the call signal, the detection control unit 351 makes an affirmative determination in step 416 and adds 1 to the value N of the counter 335 (step 417). Initially, the value of N is set to O in step 411, so it becomes N(=0)+1-1.

Next, the detection control unit 351 determines whether the value N of the counter 335 has reached a predetermined value (for example, N=2) (step 418). If the predetermined value has not been reached, a negative determination is made and the processing from step 416 onwards is repeated.

When the detection control unit 351 detects the second call signal in the call signal control unit 331 (step 416), the detection control unit 351 adds 1 to the value N of the counter 335 to make N=2 (step 4).
17). Next, in step 419, an affirmative determination is made as to whether N = 2, and a signal to that effect is sent to the main control section 361.

The main control unit 361 receives the detection of the call signal twice, sends an instruction to the display 363, and sends an instruction to the display 363.
In step 3, "line normal" is displayed (step 419).
, and then disconnects the line (step 422) and ends the process.

Normally, when the calling signal control section 331 receives a calling signal, the line is connected, but in the present invention, the main control section 361 detects and counts the calling signal without connecting the line.

In step 416, it is determined whether a ringing signal is detected, and if no ringing signal is detected, it is determined whether 30 seconds have elapsed (step 414), and whether or not the line is in use is determined. (Step 415) is repeated, but
If 30 seconds have elapsed without detecting a calling signal, a negative determination is made in step 414. The detection control section 351 sends a signal to the main control section 361 to the effect that 30 seconds, which is the set time of the timer 333, has elapsed. The main control unit 361 sends an instruction to the display 363, and the display 363 displays "
``Line abnormality'' is displayed (step 421), and the line is cut off (step 422) to end the process.

When an automatic call is made as described above, the transmission control unit 3
11. Main control unit 361. The timer 333 is activated via the detection control unit 351, but in the case of manual call origination using the telephone 225, the transmission of the dial signal is detected via the network control device 223 and the modem device 221, and the detection control unit 351 starts the timer 333. 333 is activated.

■Summary of -1 In this way, the transmitter 310 of the host computer 200
Alternatively, a call is made from the telephone 225, and the detection unit 330
detects the ringing signal for the call and determines that the line is normal.

Therefore, a line test can be performed without connecting the line, and line usage charges are not required.

■、■の・んr誼.

In the embodiment of the present invention described above, it was determined that the line was normal when two ringing signals were detected; however, it was determined that the line was normal when a ringing signal was detected. In particular, the counter 335 can be omitted.

In addition, in the embodiment, the host computer 200 and the exchange 2
91 will be tested, but terminal 26
By applying the present invention to the terminal side, the line on the terminal side can also be tested.

Furthermore, in "1. Correspondence between Examples and FIG. 1",
Although the correspondence relationship between FIG. 1 and the present invention has been explained, the present invention is not limited to this (although those skilled in the art can easily imagine that there are various modifications).

〔Effect of the invention〕

As described above, according to the present invention, it is possible to make a call with the calling means, detect the ringing signal resulting from the calling with the ringing signal detecting means, and determine whether the line is normal. It is extremely useful in practical terms.

[Brief explanation of the drawing]

Figure 1 is a principle block diagram of the line test method of the present invention, Figure 2 is an overall configuration diagram of an embodiment to which the present invention is applied, and Figure 3 is a block diagram of the principle of the line test method of the present invention.
FIG. 4 is a detailed configuration diagram of a host computer according to an embodiment to which the present invention is applied, and FIG. 4 is an explanatory diagram of line test operation according to the embodiment. In the figure, 111 is a calling means, 131 is a calling signal detection means, 151 is a line discrimination means, 200 is a host computer, 221.241.263 is a modem device, 223.243
．． 265 is a network control device, 225 is a telephone, 261 is a terminal, 310 is a transmission unit, 311 is a transmission control unit, 313 is a dial transmission unit, 315 is a telephone number storage unit, 317 is a signal transmission unit, 330 is a detection unit, 331 333 is a timer, 335 is a counter, 351 is a detection control unit, 361 is a main control unit, and 363 is a display. Honii θn0 three-haired F...Lock diagram Figure 1 Mukusho example ■Kankusa Sakaguchi Figure 3 Figure 3 Shun 1b Threat 13 rotation 7 stroke movement Reluctant Tsuna S Figure 4

Claims (1)

[Scope of Claims] A calling means (111) that makes a call to test whether the line is normal or not, and a calling signal detecting means that detects a calling signal generated by the calling means (111). (131); and a line determining means (151) for determining whether the line is normal based on the calling signal detected by the calling signal detecting means (131). method.