JPH0222951A - Line terminating equipment diagnosing system - Google Patents

Abstract

PURPOSE:To make dedicated hardware for the selection of a line terminating equipment by the voice of a call issuing side unnecessary and to consolidate a measuring method and an adjusted result by using the line terminating equipment recommended by the CCITT (International Telegraph and Telephone Consultative Committee), and performing a fully automatized remote instruction by the voice. CONSTITUTION:The title system is provided with an electronic computer 1, plural line terminating equipment (6-1 to 6-n) in accordance with the recommendation of the CCITT, a measuring instrument 4 for data communication to measure the line terminating equipment (6-1 to 6-n) by the control of the computer 1, a voice synthesis device 5 to synthesize the voice, a line terminating equipment switch 2 to switch the line terminating equipment (6-1 to 6-n), and a network control equipment 3. And those plural line terminating equipment (6-1 to 6-n) are used by switching, and the fully automatized remote instruction by the voice can be performed based on the measured result. In such a way, it is possible to make the dedicated hardware for the selection of the line terminating equipment by the voice at the call issuing side unnecessary, and furthermore, to consolidate the measuring method and the adjusted result.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a diagnostic method for a line termination device. In particular, the present invention relates to an automatic diagnosis method for a line termination device that provides remote voice guidance to a coordinator.

〔overview〕

The present invention is a diagnostic method for a plurality of line termination devices connected to a public communication line, in which a plurality of line termination devices conforming to the recommendations of the International Telegraph and Telephone Consultative Committee (hereinafter referred to as CCITT) are switched and used, and the diagnosis method is based on the measurement results. By providing fully automated voice-based remote guidance, the system eliminates the need for dedicated hardware to select the line termination device based on the caller's voice, and also makes it possible to standardize measurement methods and adjustment results. .

[Conventional technology]

Conventionally, this type of diagnosis involves people going to both ends of a public communication line and measuring the characteristics of the public communication line using a data communication measuring device (modem tester), and then determining whether or not the line is terminated based on the measurement results. The equipment was being adjusted.

[Problem that the invention seeks to solve]

For this reason, an adjuster must be present at the opposite side at the same time, and there is also the drawback that measurement methods and adjustment results are not standardized because they are based on human judgment.

The present invention aims to eliminate such drawbacks, and provides a system that does not require a person to go to the site and can standardize measurement methods and adjustment results.

[Means for solving problems]

The present invention relates to a network control device connected to a public communication line, a computer configured with a control procedure for testing a line terminating device under test connected via the public communication line, and A method for diagnosing a line terminating device, comprising: a data communication measuring device controlled by the public communication line and transmitting a test signal to the public communication line or measuring a signal arriving from the line terminating device under test on the public communication line; A plurality of line terminating devices are provided corresponding to the target line terminating device under test, and one of the plurality of line terminating devices is selected under the control of the computer to connect the network control device and the computer. A line terminating device switcher is connected between the lines, and a voice is controlled by the electronic computer and transmits information to be tested to the side to be tested in accordance with the control procedure as a voice message to the line via the network control device. It is characterized by being equipped with a synthesis device.

[Effect]

When a user makes a call to this device and connects to the device, when the device receives a call, the device sends a voice message to the calling party from the voice synthesis device to start remote diagnosis.

Next, the user is asked which line terminating device is to be diagnosed, and the operator on the calling side selects the type of line terminating device with a voice response (e.g. "Yes"), and then the user is asked to Instruct measurement operations while sending instructions. Measurement results are also communicated by voice.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

The figure is a block diagram showing the configuration of an embodiment of the present invention.

The embodiment of the present invention measures a computer 1, a plurality of line termination devices 6-1 to 6-n that comply with CCITT recommendations, and the line termination devices 6-1 to 6-n under the control of the computer 1. It is equipped with a measuring instrument 4 for data communication, a voice synthesizer 5 for synthesizing speech, a line termination device switching device 2 for switching between line termination devices 6-1 to 5-n, and a network control device 3. Based on the measurement results of the measuring device 4, the line termination device 6-1
~5-n includes means for automatically notifying adjustment instructions by voice and performing diagnosis;
0 and a line connection command signal control circuit 25.

The operation of the embodiment of the present invention configured as described above will be explained.

When the power is turned on to this device, the electronic computer 1 inside this device
The line connection command signal 23 is sent to the line connection command signal control circuit 25 in the line termination device switch 2 in preparation for an incoming call.
is turned on, the switch 9 of the line termination device switch 2 is connected to the contact 11, and the interface circuit of the interconnection cable 18 (108,2 signal, standard according to CCITT Recommendation V, 24, the same applies hereinafter) is turned on. and wait for an incoming call.

When the network control device 3 receives a call, the call display signal 27 turns ON, and the call display signal detection circuit 26 of the line termination device switch 2 detects the call and connects the interconnection cable 21 to the computer 1. to notify you of an incoming call. electronic computer 1
When notified of an incoming call, the voice synthesizer 5 plays a self-inquiry voice message.

Next, in preparation for allowing the calling operator to select a line termination device by voice, the computer 1 causes the line termination device switch 2 to connect the switch 10 to the contact 14. In response to a voice message question from this device for selecting a line termination device, the interface circuit (109 signal) of the line termination device 7 is turned on in response to a voice response from the calling party.
By utilizing the characteristic of being in the N state, it is possible to select a line termination device.

The electronic computer 1 includes a speech synthesizer 5 to a line termination device 6-
1, a voice message is sent to the calling party. The computer 1 monitors the interface circuit (109 signal) of the line termination device 6-2 through the interconnection cable 18 within a certain period of time. If there is a voice response from the handset of the calling side network control device within a certain period of time, it means that the line termination device 6-1 has been selected.

If the ON state of the interface circuit (109 signal) of the line terminating device 6-2 cannot be detected within a certain period of time, it is determined that the line terminating device 6-1 has not been selected, and the computer 1 selects the voice synthesizer 5. sends a voice message to the calling party to ask whether it is the line terminating device 6-2.

In this way, the process of asking questions by voice message and waiting for a voice response from the calling party is repeated up to the line terminal device 8.

If none of the line termination devices 6-1 to 6-n is selected, the selection of the line termination device 6-1 is repeated again. If the computer 1 cannot detect the interface circuit (109 signal) of the line termination device 6-2 even in the second scan, it determines that the call is a mistake and sends the line connection command signal control circuit in the line termination device switch 2. 25, the line connection command signal 23 is turned O.
Put it in FF state.

As a result, the connection of the public communication line 24 within the network control device 3 becomes the handset side. Since the handset of the network control device 3 is on-hook, the DC circuit of the public communication line 24 is in an open state, and the connection of the public communication line 24 is disconnected.

When a line termination device is selected in response to a reply from the calling party, the computer 1 sends a voice message to the speech synthesizer 5 indicating which one of the selected line termination devices 6-1 to 6-n has been selected. and sends a voice message to the calling party to perform measurements on the line terminating equipment.

The computer 1 connects the switch 9 to the contact 12 of the line termination device switch 2, and connects the switch 10 to the contact for the line termination device selected by the calling side.

The operator on the calling side uses the data communication measuring device 4 to carry out measurements according to the instructions given by the voice message.

Upon completion of the operation on the calling side, the interface circuits (signal 105) of the line termination devices 6-1 to 6-n from the data communication measuring instrument 4 are turned off. As a result, the interface circuits (109 signals) of the line termination devices 6-1 to 5-n selected in this device are turned off. The data communication measuring instrument 4 detects the OFF state of the interface circuit (109 signal) of the line termination devices 6-1 to 5-n, and notifies the computer 1 of the OFF state.

The electronic computer 1 receives and analyzes the measurement results from the data communication measuring device 4, calculates an adjustment value, and after exchanging it with voice information, the voice synthesizer 5 notifies the calling party as a voice message. The calling side operator adjusts the line termination devices 6-1 to 6-n in accordance with this audio adjustment item message.

After this device notifies the calling operator of the adjustment item message by voice, it disconnects the public communication line 24 in order to wait for the next incoming call. To disconnect the public communication line 24, the computer 1 causes the line connection command signal control circuit 25 in the line termination device switch 2 to turn off the line connection command signal 23. As a result, the connection of the public communication line 24 in the network control device 3 changes from the line termination device 6-1 to 6-n side to the handset side, and since the handset is on-hook, the direct current circuit of the public communication line 24 becomes open and disconnected.

An example of a voice message is: "This is a remote diagnostic center. We will diagnose your modem. Please reply with the appropriate device.""Is it a 300 baud modem?" At regular intervals "Is it a 1200 baud modem?" Constant Time Interval “Is this a 4800 baud modem?” Fixed Time Interval The calling party replies by voice into the handset of the network controller within a fixed time interval after being asked which line-terminating device is to be tested. (“High’”) or, if there is no handset, connect the modem tester interface circuit (105).
signal) is turned ON.

This device transmits the voice from the calling side to the O of the interface circuit (109 signal) of the line termination device of CCITT Recommendation v.
Detected by N state.

Response (from OFF to O
N) Since the time is from 105 milliseconds to 205 milliseconds, it can be detected within the calling party's utterance time of "Hi".

When the ○N state of the interface signal of the line termination device according to CCITT Recommendation v. 22 is detected within a certain period of time, this device notifies the calling party of the selected line termination device type by voice synthesis. For example, if the line termination device of CCITT Recommendation v.27 is selected, the user confirms that it is a 4800 baud modem.

Next, this device instructs the calling party to measure the line quality from the speech synthesizer. This voice message looks like this:

“Next, perform a functional test. Please send ASZ for 10 seconds and error bit for 1 minute. 1. The calling party starts the measurement using a data communication measuring device (modem tester) according to the instructions.”A "is a digital signal from a modem tester"
A series of 1'' and "Z" means to send a series of digital signals "0" to the interface circuit (103 signal) of the line termination device.

A frequency modulation type line termination device transmits a series of high frequencies on the communication line when the interface circuit (signal 103) is a series of "0"s, and transmits a series of high frequencies on the communication line when it is a series of "1s". Send out a series of low frequency frequencies. This causes the device to measure two received signal levels.

The transmission signal level of the adjustment item in the line termination device on the calling side is determined as follows, and is communicated to the calling side from the speech synthesizer.

From the average value of the two received signal levels measured by this device,
A computer calculates a value obtained by subtracting the sum of the line transmission loss value from this device to the first class telecommunications carrier's switching equipment, the line transmission loss value between the switching equipment, and the switching equipment arrival level (-15 dBm).

If you want to increase the transmitting signal level of the calling side by 1 dBm, “Please go up 168m” is transmitted from the speech synthesizer to the calling party.

Whether the setting of the amplitude equalizer is necessary or not is determined as follows and is communicated to the calling party from the speech synthesizer. From the relative gain vs. frequency table of line termination equipment, the difference in the two received signal levels is 3 dBm.
Settings are required if there are more than that, and settings are not required if there are less. In the case of a phase modulation type line termination device, setting is required if the difference in the level of two received signals is 268 m or more, and setting is not required if it is less than that.

If you want to turn on the amplitude equalizer on the calling side, the speech synthesizer tells the calling side, "Please turn on the amplitude equalizer."

The quality of the communication line is evaluated by transmitting and receiving a 511-bit pseudo-random pattern. When the modem tester on the calling side sends out a 511-bit pseudo-random pattern for an arbitrary period of time following the sending of the A and Z signals, the error count for that time is measured, and the error count is transmitted from the speech synthesizer to the calling side.

Next, use the data communication measuring device (modem tester) on this device side.
A 511-bit pseudo-random pattern is sent to the calling party for the reception time, and the calling party's data communication measuring device (modem tester) measures the error count.

As described above, the calling side can adjust the transmission signal level, set the amplitude equalizer, and measure the line quality based on voice instructions from the device.

The operation is completed by detecting the OFF state of the interface circuit (109 signal) of the selected line termination device on the device side. In other words, this device can detect the end of the call when the calling party hangs up the phone or turns off the interface circuit (105 signal) of the data communication measuring device (modem tester).

〔Effect of the invention〕

As explained above, according to the present invention, CCITT recommendation v.
By using the recommendation rate line termination device, there is no need for dedicated hardware to select the line termination device based on the caller's voice, and the measurement method and This has the effect of unifying the adjustment results.

[Brief explanation of the drawing]

The figure is a block diagram showing the configuration of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Electronic computer, 2... Line termination device switch (automatic), 3... Network control device, 4... Data communication measuring device (modem tester), 5... Speech synthesis device, 6-1・
...Circuit termination device type a (CCITT recommendation v, recommendation basis), 6-2...Circuit termination device type b (CCITT recommendation
Recommendation V, Recommendation rate), 6 n...Line termination equipment type ns9.10...Switching device, 11.12.13.14
．． 15.16...Contact, 17...Signal line for network control device (communication line MT), 18...Interconnection cable (C
CITT Recommendation V, Recommendation Rate: Compliant), 19.20.21.
22... Interconnection cable, 23... Network control device control signal (line connection command signal), 24... Public communication line, 25... Line connection command signal control circuit, 26... Call display signal Detection circuit, 27... Calling display signal.

Claims (1)

[Claims] 1. A control procedure for testing is set for a network control device (3) connected to a public communication line and a line termination device under test connected via this public communication line. Electronic computer(
1), and a data communication measuring instrument (4) that is controlled by this computer and transmits a test signal to the public communication line or measures a signal arriving at the public communication line from the line termination device under test. In the diagnosis method for the line termination device equipped with the device, a plurality of line termination devices (6-1 to 6-n) provided corresponding to the target line termination device under test, and one of the plurality of line termination devices a line termination device switch (2) that is selected under the control of the computer and selectively connects between the network control device and the computer; and a side under test that is controlled by the computer and according to the control procedure A diagnostic method for a line termination device, comprising: a voice synthesizer (5) that sends information to be transmitted to the line as a voice message via the network control device.