Voice communication device, method for controlling voice communication device, and program

Abstract

To provide a voice communication device that detects and determines an abnormality of a call in a short time with a high probability, disconnecting the abnormality-detected call, and automatically restores the call in a short time to recover the call from the abnormality.SOLUTION: A voice communication device includes a voice communication part, a call information holding part, an in-device call control part, and a voice quality analysis part, and the in-device call control part once receiving call connection control from a call processing device performs voice communication connection control over the voice communication part which is to perform voice communication to establish a call, and also stores call information, showing control details related to the voice communication connection control, in the call information holding part. The voice quality analysis part analyzes details of the voice communication performed by the voice communication part, and if an abnormality of a call is detected through the analysis on the details of the voice communication, the in-device call control part disconnects the abnormality-detected call in the voice communication part, and restores the established call on the basis of the call information held in the call information holding part and related to the disconnected call.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a voice communication device, a control method for a voice communication device, and a program.

Background Art

[0002] Documents related to detecting and dealing with abnormalities in voice communication signals include the following.

[0003] Patent Document 1 relates to a wireless communication device that analyzes the waveform of a voice signal to detect deterioration in voice quality, disconnects communication with the communication partner, reconnects with the communication partner after the disconnection is completed, and enables voice communication again.

[0004] Patent Document 2 analyzes voice packets, detects abnormalities in voice communication due to failures of an IP-PBX (Internet Protocol - Private Branch Exchange) or an IP (Internet Protocol) terminal, and relates to an IP communication system that maintains voice quality by stopping voice communication or discarding voice packets.

[0005] Patent Document 3 relates to a failure detection device that identifies a failure location that degrades the voice quality of voice communication.

[0006] Patent Document 4 relates to a voice quality analysis device that analyzes operation information including delay time, number of packet losses, packet loss rate, amount (width) of fluctuation (jitter), etc. with AI (Artificial Intelligence) to estimate the cause of voice quality degradation.

[0007] Patent Document 5 relates to a voice quality analysis device that detects degradation of voice communication service quality by at least one of analysis of packet headers, analysis of payload headers, and analysis of bitstreams stored in the payload, and notifies the detection result to a higher-level device.

Prior Art Documents

Patent Documents

[0008] [Patent Document 1] Japanese Unexamined Patent Application Publication No. 2007-174210 [Patent Document 2] Japanese Unexamined Patent Application Publication No. 2008-072378 [Patent Document 3] Japanese Unexamined Patent Application Publication No. 2011-250250 [Patent Document 4] Japanese Unexamined Patent Application Publication No. 2022-011496 [Patent Document 5] Re-Published Patent No. 2011 / 034090 [Summary of the Invention] [Problems to be Solved by the Invention]

[0009] The following analysis is provided by the present inventor.

[0010] In the voice communication business, it is difficult for service providers to detect abnormalities in the quality of call voices, and in many cases, abnormalities in the quality of call voices are found through complaints from subscribers. Therefore, service providers are required to detect abnormalities before they affect the service, or, if they do affect the service, to detect them in the shortest possible time.

[0011] Furthermore, even when attempting to repair a card with an abnormal voice communication device as a defective product, it is conceivable that temporary data corruption of the memory due to noise or the like is the cause, and in many cases, no abnormality is found in the card itself, resulting in waste such as usable cards being discarded as defective products.

[0012] Factors that degrade service quality in voice communication such as telephones include noise, echo, dropped calls, one-way calls, misconnections, interference, etc. Among these, one-way calls, misconnections, and interference are highly likely to occur within a voice communication device. However, when determining one-way calls, misconnections, and interference, there are the following problems.

[0013] The determination of single - channel calls uses the level and spectrum of one input signal to determine the presence or absence of voice input, and compares the time without voice input with a specified value for determination. Therefore, there are cases where correct determination cannot be made, or cases where the determination takes time. Also, the determination of misconnection and interference cannot be made without understanding the content of two - way voice. In general, for voice quality analysis, there are many analysis methods that use the packet state (such as whether there is no loss or jitter), and there are few cases of analyzing the data within the packet. Furthermore, even if an abnormality is detected and determined, it only notifies the upper - level device and cannot perform self - recovery such as re - setting the call setup.

[0014] An object of the present invention is to provide a voice communication device, a control method of a voice communication device, and a program that contribute to detecting and determining call abnormalities with high probability and in a short time, disconnecting the call in which an abnormality is detected, and automatically restoring the call in a short time to recover the call abnormality.

Means for Solving the Problems

[0015] According to a first aspect of the present invention, a voice communication unit that performs voice communication, a call information holding unit that holds call information, an in - device call control unit that performs voice communication connection control of the voice communication unit, including a voice quality analysis unit that analyzes the content of the voice communication, when the in - device call control unit receives call connection control from a call processing device, it performs voice communication connection control of the voice communication unit that performs voice communication to establish a call, and stores call information indicating the control content related to the voice communication connection control in the call information holding unit. When the voice quality analysis unit analyzes the content of the voice communication performed by the voice communication unit and detects an abnormality in the call through the analysis of the content of the voice communication, the in - device call control unit disconnects the call in which the abnormality is detected in the voice communication unit, and restores the established call based on the call information related to the disconnected call held in the call information holding unit. A voice communication device can be provided.

[0016] According to a second aspect of the present invention, a voice communication unit that performs voice communication, a call information holding unit that holds call information, an in-device call control unit that performs voice communication connection control of the voice communication unit, In a voice communication apparatus including a voice quality analysis unit that analyzes the content of the voice communication, when the in-device call control unit receives call connection control from a call processing apparatus, performing voice communication connection control of the voice communication unit that performs voice communication to establish a call; the in-device call control unit storing call information indicating control content related to the voice communication connection control in the call information holding unit; the voice quality analysis unit analyzing the content of the voice communication performed by the voice communication unit; when the voice quality analysis unit detects an abnormality in the call by analyzing the content of the voice communication, the in-device call control unit disconnecting the call in which the abnormality is detected in the voice communication unit; A control method of a voice communication apparatus can be provided, including a step of the voice quality analysis unit restoring the established call based on the call information related to the disconnected call held in the call information holding unit. This method is associated with a specific machine, namely a computer that performs the control method of the voice communication apparatus.

[0017] According to a third aspect of the present invention, in a computer included in a voice communication apparatus including a voice communication unit that performs voice communication and a call information holding unit that holds call information, when receiving call connection control from a call processing apparatus, performing a process of performing voice communication connection control of the voice communication unit that performs voice communication to establish a call; storing call information indicating control content related to the voice communication connection control in the call information holding unit; analyzing the content of the voice communication performed by the voice communication unit; when an abnormality in the call is detected by analyzing the content of the voice communication, performing a process of disconnecting the call in which the abnormality is detected in the voice communication unit; when an abnormality in the call is detected by analyzing the content of the voice communication, performing a process of disconnecting the call in which the abnormality is detected in the voice communication unit; It is possible to provide a program that executes a process of restoring the established call based on the call information related to the disconnected call that is stored in the call information storage unit.

[0018] These programs can be recorded on a computer-readable storage medium. The storage medium can be a non-transient medium such as a semiconductor memory, a hard disk, a magnetic recording medium, or an optical recording medium. The present invention can also be embodied as a computer program product. [Effects of the Invention]

[0019] According to the present invention, it is possible to provide a voice communication device, a control method for a voice communication device, and a program that contribute to making it possible to detect and determine call abnormalities with a high probability and in a short time, disconnect a call in which an abnormality is detected, and automatically restore the call in a short time to recover from the call abnormality. [Brief explanation of the drawings]

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

[0021] First, an overview of an embodiment of the present invention will be described with reference to the drawings. Note that the reference numerals attached to the drawings in this overview are for convenience and are attached to each element as an example to assist understanding, and are not intended to limit the present invention to the illustrated embodiments. Also, the connection lines between blocks such as the drawings referred to in the following description include both bidirectional and unidirectional ones. The one-way arrow schematically shows the flow of the main signal (data) and does not exclude bidirectionality.

[0022] FIG. 1 is a diagram showing an example of the configuration of a voice communication device according to an embodiment of the present invention. Referring to FIG. 1, a voice communication device 100 according to an embodiment of the present invention includes a voice communication unit 300 that performs voice communication, a call information holding unit 400 that holds call information, an in-device call control unit 200 that controls the voice communication connection of the voice communication unit 300, and a voice quality analysis unit 500 that analyzes the content of the voice communication.

[0023] When the in-device call control unit 200 receives call connection control from an external call processing device (CA, Call Agent) of the voice communication device 100, it controls the voice communication connection of the voice communication unit 300 that performs voice communication to establish a call. Also, the in-device call control unit 200 stores call information indicating the control content related to the voice communication connection control in the call information holding unit 400.

[0024] The voice quality analysis unit 500 analyzes the content of the voice communication performed by the voice communication unit. As an example, the voice quality analysis unit 500 includes AI (Artificial Intelligence) and analyzes the content of the voice communication performed by the voice communication unit by means of AI.

[0025] When the voice quality analysis unit 500 detects an abnormality in a call by analyzing the content of the voice communication, the in-device call control unit 200 disconnects the call in which the abnormality is detected in the voice communication unit 300.

[0026] Next, the in-device call control unit 200 restores the call established by the in-device call control unit 200 when receiving call connection control based on the call information regarding the disconnected call held in the call information holding unit 400.

[0027] In this way, when a call anomaly occurs, the abnormal state can be restored by reconnecting the call in a short time. As a result, operations such as the end user reconnecting the call become unnecessary, and a decline in service quality can be avoided. Also, a situation where a failure (abnormal state) is found through a report from the end user can be avoided. Therefore, the service call is not interrupted, there is no report from the user, and it does not become a hard failure, so the use of the voice communication device can be continued, and operations such as hard failure investigation do not occur.

[0028] According to an embodiment of the present invention, it is possible to provide a voice communication device, a control method for the voice communication device, and a program that contribute to enabling detection and determination of a call anomaly with high probability and in a short time by analyzing the content of voice communication, disconnecting the call in which the anomaly is detected, automatically restoring the call in a short time, and recovering the call anomaly.

[0029] [First Embodiment] Next, the voice communication device according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a diagram showing an example of the configuration of the voice communication device according to the first embodiment of the present invention. In FIG. 2, components denoted by the same reference numerals as in FIG. 1 represent the same components.

[0030] Referring to FIG. 2, the communication terminal 10 is connected to the communication network 30 via the communication network 20, and is connected to another communication terminal 50 from the communication network 30 via the communication network 40. The communication terminals 10 and 50 are voice communication terminals. The communication network 30 includes voice communication devices 100 and 110, and a CA (Call Agent) 150. The voice communication device 100 includes a voice communication unit 300 that performs voice communication, a call information holding unit 400 that holds call information, an in-device call control unit 200 that controls the voice communication connection of the voice communication unit 300, and a voice quality analysis unit 500 that analyzes the content of the voice communication. The voice communication device 110 may have the same configuration as the voice communication device 100 as an example, but is not limited thereto, and may have other configurations. Note that the communication network may be any communication network including a fixed communication network, a wireless communication network, an IP communication network, etc., and is not limited to a specific communication network.

[0031] FIG. 3 is a flowchart showing an example of the operation of the voice communication device according to the first embodiment of the present invention. Referring to FIG. 3, the operation of the voice communication device 100 according to the first embodiment of the present invention will be described. The operation of the voice communication device 100 starts at step S1000.

[0032] Referring to FIG. 3, at step S1001, call establishment is performed. When the in-device call control unit 200 of the voice communication device 100 receives call connection control from a CA (call processing device) 150 outside the voice communication device 100, it controls the voice communication connection of the voice communication unit 300 that performs voice communication to establish a call. Referring to FIG. 2, a downlink call path via line 51 is connected from the communication terminal 10 via the communication network 20, and an uplink call path via line 521 is connected to the communication terminal 10 via the communication network 20, and a two-way call is established.

[0033] When the voice communication device 110 also receives call connection control from the CA (call processing device) 150, a two-way call is established between the voice communication device 110 and the communication terminal 50 via the communication network 40 in the same manner as the voice communication device 100. A two-way call is also established between the voice communication device 100 and the voice communication device 110. As a result, an end-to-end two-way call is established between the communication terminal 10 and the communication terminal 50 via the voice communication device 100 and the voice communication device 110.

[0034] Referring to FIG. 3, next, in step S1002, call information is stored in the call information holding unit 400. The in-device call control unit 200 of the voice communication device 100 performs voice communication connection control of the voice communication unit 300 to connect the downlink communication path via the line 511 and the uplink communication path via the line 521, and when a two-way call is established, stores call information indicating the control content related to the voice communication connection control in the call information holding unit 400. Note that the call information holding unit 400 may be configured to hold all the call information set in the voice communication device 100.

[0035] Referring to FIG. 3, next, in step S1003, call disconnection is monitored. When the call is disconnected (step S1003 YES), in step S1004, call disconnection processing is performed, and the operation of the voice communication device 100 ends in step S1007.

[0036] When the call has not been disconnected (step S1003 NO), the process proceeds to step S1005.

[0037] Referring to FIG. 3, next, in step S1005, the voice quality analysis unit 500 monitors the quality of voice communication (call) performed by the voice communication unit 300. That is, during voice communication, the voice quality analysis unit 500 constantly analyzes the content of the voice communication and monitors the occurrence of call abnormalities such as one-way call, misconnection, and interference. When monitoring the voice communication (call) quality and the voice communication quality is good (S1005OK), it returns to step S1003 to monitor call disconnection. When the voice quality analysis unit 500 detects a voice abnormality (S1005NG), it notifies the in-device call control unit 200 as a call abnormality by signal 561. FIG. 4 is a diagram showing an example of the configuration of the voice quality analysis unit 500 of the voice communication device 100 according to the first embodiment of the present invention. With reference to FIG. 4, the analysis of the content of the voice communication performed by the voice communication unit 300 and the operation of detecting call abnormalities will be described.

[0038] The voice quality analysis unit 500 includes a voice conversion unit A510, a voice conversion unit B520, an AI-based analysis unit 530, a level-based analysis unit 540, a spectrum-based analysis unit 550, and an abnormality information collection and analysis unit 560. The voice conversion unit A510 and the voice conversion unit B520 are respectively connected to the downstream line 511 and the upstream line 521. The voice conversion unit A510 converts the voice communication signal on the downstream line 511 into a voice signal 532 and outputs it, and the voice conversion unit B520 converts the voice communication signal on the upstream line 521 into a voice signal 533 and outputs it. Here, the voice communication signal is a signal in the form flowing through the communication line, and the voice signals 532 and 533 are electrical signals representing a voice call. The downstream voice signal 532 and the upstream voice signal 533 are supplied to the AI-based analysis unit 530, the level-based analysis unit 540, and the spectrum-based analysis unit 550. By analyzing the downstream voice signal 532 and the upstream voice signal 533 by the AI-based analysis unit 530, the level-based analysis unit 540, and the spectrum-based analysis unit 550, the content of the two-way voice communication performed by the voice communication unit 300 via the downstream line 511 and the upstream line 521 is analyzed, and call abnormalities are detected.

[0039] The level analysis unit 540 and the spectrum analysis unit 550 identify the presence or absence of signals based on the signal levels of the voice signals 532 and 533, whether it is a human voice by spectrum, etc., and perform signal level and spectrum analysis, confirmation of duration, etc., in the same way as conventional voice quality analysis. Next, the presence or absence of voice input is determined using the signal level and spectrum of one of the input signals, and the time without voice input is compared with a specified value to determine a one-way call. In the first embodiment of the present invention, in addition to these, by analyzing the conversation content by AI analysis using the AI analysis unit 530, the presence or absence of call abnormalities such as one-way calls, interference, and misconnections is determined with high probability and in a short time.

[0040] By AI analysis using the AI analysis unit 530, from the utterances included in one of the voice calls of the downstream voice signal 532 or the upstream voice signal 533, characteristic utterances during a one-way call (for example, "Hello" or "Can you hear me" are often used frequently) may be detected so as to detect a one-way call. Also, by analyzing the two-way voice signals of the downstream voice signal 532 and the upstream voice signal 533, a state where one is silent and the other is an utterance peculiar to a one-way call may be detected so as to detect a one-way call.

[0041] In the case of interference or misconnection, the voice conversations of the two-way voice signals of the downstream voice signal 532 and the upstream voice signal 533 are subjected to AI analysis by the AI analysis unit 530, and it may be determined whether both conversations are valid as normal conversations so as to determine the state of misconnection or interference.

[0042] In conventional voice quality analysis, only the presence or absence of signals based on the level of voice signals, identification of whether it is a human voice by spectrum, etc. are performed. Therefore, a final judgment such as a one-way call, misconnection, interference, etc. requires monitor confirmation by a conservator. Therefore, the process is only limited to notifying the detected abnormality to a higher-level device or a maintenance terminal.

[0043] In contrast, the voice quality analysis unit 500 of the first embodiment of the present invention performs AI analysis on the content of the voice call in the voice signal by the analysis unit 530 using AI, and can determine with a high probability in a short time even the content that has been judged by maintenance personnel until now, such as that if there are more words like "hello" or "can you hear me" on only one side, it is a one-way call.

[0044] As described above, when an abnormality in a call is detected by analysis by the AI-based analysis unit 530, the level-based analysis unit 540, and the spectrum-based analysis unit 550, the abnormality information collection and analysis unit 560 collects the abnormality information, analyzes it, and notifies the in-device call control unit 200 of the detection of the call abnormality, together with information indicating the call in which the abnormality has been detected, as an example, by the signal 561. Alternatively, the information indicating the call in which the abnormality has been detected may be made recognizable by the in-device call control unit 200 by another method.

[0045] Referring to FIG. 3, next, in step S1006, the call in which an abnormality has been detected is disconnected. The in-device call control unit 200 notified by the voice quality analysis unit 500 by the signal 561 of the occurrence of an abnormality in the call disconnects the call in which the abnormality has been detected in the voice communication unit 300 based on the information indicating the call in which the abnormality has been detected included in the signal 561.

[0046] Furthermore, in step S1006, the established call is restored based on the call information held in the call information holding unit 400. In the above-described step S1002, call information indicating the control content related to the voice communication connection that established the call is stored and held in the call information holding unit 400. The in-device call control unit 200 restores the call established by the in-device call control unit when receiving call connection control based on the call information related to the call in which an abnormality has been detected and disconnected and held in the call information holding unit 400. Note that the call disconnection / restore does not mean performing end-to-end call disconnection / reconnection between the communication terminal 10 and the communication terminal 50, but means disconnecting / restoring the connection state within the voice communication device 100 based on the call information held in the voice communication device 100.

[0047] Also, in step S1006, when an abnormality such as one-way call, misconnection, or interference occurs in the call based on the information from the voice quality analysis unit 500, the in-device call control unit 200 performs a process of temporarily disconnecting and restoring (reconnecting) the abnormal call based on the call information held in the call information holding unit 400. Thereby, when an abnormality in the call occurs due to data corruption of the memory in the voice communication device 100 caused by noise or the like, the state is improved by temporarily disconnecting and restoring (reconnecting) the abnormal call. When the state is improved, it is notified to the upper device or the maintenance terminal that a call failure occurred but has been restored by restoration (reconnection). That is, after restoring (reconnecting) an established call, if the voice quality analysis unit 500 does not detect a new abnormality in the call within the first predetermined period, the in-device call control unit 200 reports to the upper device or the maintenance terminal that the abnormality in the call has been restored by restoring (reconnecting) the established call. Also, if it recurs even after repeating this process several times, it is reported to the upper device or the maintenance terminal as having a hardware failure. That is, after restoring (reconnecting) an established call, further, if the voice quality analysis unit 500 detects a new abnormality in the call and the in-device call control unit 200 disconnects the call in which the new abnormality is detected and restores (reconnects) the established call, and repeats this for a predetermined number of times within the second predetermined period, the in-device call control unit 200 reports to the upper device or the maintenance terminal that there is a hardware failure in the voice communication unit 300. After the end of step S1006, the process returns to step S1003 to monitor call disconnection.

[0048] Note that the voice quality analysis unit 500 shown in FIG. 4 is an example of a configuration including an analysis unit 530 by AI, but the analysis unit by AI may be arranged outside the voice communication device 100. FIG. 5 is a diagram showing another example of the configuration of the voice quality analysis unit of the voice communication device according to the first embodiment of the present invention. In FIG. 5, components denoted by the same reference numerals as those in FIG. 4 indicate the same components, and the description thereof is omitted. Referring to FIG. 5, the voice quality analysis unit 500 includes an external IF (interface) unit 570. The external IF unit 570 is an interface that communicates with an analysis unit 600 by AI outside the device, which is arranged outside the voice communication device 100. The external IF unit 570 transmits voice signals 532 and 533 indicating the content of the voice communication of the voice communication unit 300 to the analysis unit 600 by AI outside the device, and receives an abnormality of a call detected by the analysis unit 600 by AI outside the device performing analysis of the content of the voice communication.

[0049] As described above, according to the first embodiment of the present invention, by performing AI analysis on the content of voice communication, it is possible to detect and determine an abnormality of a call with a high probability and in a short time, disconnect the call in which an abnormality is detected, and automatically restore the call in a short time to recover the abnormality of the call, and it is possible to provide a voice communication device, a control method of the voice communication device, and a program.

[0050] As described above, each embodiment of the present invention has been described, but the present invention is not limited to the above-described embodiments, and further modifications, substitutions, and adjustments can be made without departing from the basic technical idea of the present invention. For example, the network configuration shown in each drawing, the configuration of each element, and the expression form of the message are examples for assisting the understanding of the present invention, and are not limited to the configurations shown in these drawings. Also, "A and / or B" is used in the sense of at least either A or B.

[0051] In addition, the procedures shown in the above-described embodiment and the first embodiment of the present invention can be realized by a program that causes a computer that functions as the voice communication device of the present invention or a computer (9000 in FIG. 6) included in the voice communication device to realize the functions of the voice communication device or the in-device call control unit and the voice quality analysis unit of the voice communication device. Such a computer is exemplified by a configuration including a CPU (Central Processing Unit) 9010, a communication interface 9020, a memory 9030, and an auxiliary storage device 9040 in FIG. 6. That is, the CPU 9010 in FIG. 6 may execute a control program for the voice communication device or the in-device call control unit and the voice quality analysis unit of the voice communication device, and perform an update process on each calculation parameter held in the auxiliary storage device 9040 or the like.

[0052] The memory 9030 is a RAM (Random Access Memory), a ROM (Read Only Memory), or the like.

[0053] That is, each part (processing means, function) of the voice communication device or the in-device call control unit and the voice quality analysis unit of the voice communication device shown in the above-described embodiment and the first embodiment of the present invention can be realized by a computer program that causes the processor of the above computer to execute each of the above-described processes using its hardware.

[0054] Finally, the preferred forms of the present invention will be summarized. [First Form] (Refer to the voice communication device from the above first perspective) [Second Form] In the voice communication device of the first form, it is preferable that the voice quality analysis unit includes an analysis unit by AI (Artificial Intelligence), and the analysis unit by AI performs analysis of the content of the voice communication performed by the voice communication unit by AI analysis. [Third Form] In the second form of the voice communication device, the analysis unit by the AI is configured to output one-way communication, misconnection, or interference as a call abnormality when one-way communication, misconnection, or interference occurs, and detect the call abnormality by analyzing the content of the voice communication of the voice communication unit. This is preferable. [Fourth form] In the second form of the voice communication device, the analysis unit by the AI is arranged externally. Preferably, the voice quality analysis unit includes an external interface that communicates with the analysis unit by the AI arranged externally. [Fifth form] In the first form of the voice communication device, after restoring the established call, if the voice quality analysis unit does not detect a new abnormality of the call within a first predetermined period, it is preferable to report to the upper device or the maintenance terminal that the abnormality of the call has been restored by restoring the established call. [Sixth form] In the first form of the voice communication device, after restoring the established call, further If the voice quality analysis unit detects a new abnormality of the call, and the in-device call control unit disconnects the call in which the new abnormality is detected and restores the established call a predetermined number of times within a second predetermined period, it is preferable that the in-device call control unit reports to the upper device or the maintenance terminal that there is a hardware failure in the voice communication unit. [Seventh form] (Refer to the control method of the voice communication device from the above second perspective) [Eighth form] The control method of the voice communication device in the seventh form includes that the voice quality analysis unit includes an analysis unit by AI (Artificial Intelligence). Preferably, the step of the analysis unit by the AI performing the analysis of the content of the voice communication performed by the voice communication unit by AI analysis is included. [Ninth form] (Refer to the program from the above third perspective) [Tenth form] The program of the ninth form causes the computer to execute a process of analyzing the content of the voice communication performed by the voice communication unit by AI analysis, which is preferable. Note that, similar to the first form, the eighth and tenth forms can be developed into the third to sixth forms.

[0055] Note that each disclosure of the above patent documents is incorporated herein by reference. Within the scope of the entire disclosure of the present invention (including the claims), further modifications and adjustments of the embodiments or examples can be made based on the basic technical idea. Also, within the scope of the disclosure of the present invention, various combinations or selections of various disclosure elements (including each element of each claim, each element of each embodiment or example, each element of each drawing, etc.) are possible. That is, the present invention naturally includes all the disclosures including the claims and various modifications and corrections that could be made by those skilled in the art according to the technical idea. In particular, regarding the numerical ranges described in this document, any numerical value or small range included within the range should be construed as specifically described even without separate description.

Explanation of Reference Numerals

[0056] 10, 50 Communication terminal 20, 30, 40 Communication network 100 Voice communication device 110 Voice communication device 150 CA (Call processing device) 200 In-device call control unit 300 Voice communication unit 400 Call information holding unit 500 Voice quality analysis unit 510 Voice conversion unit A 520 Voice conversion unit B 530 Analysis unit by AI 540 Analysis unit by level 550 Analysis unit by spectrum 560 Abnormal information collection and analysis unit 570 External IF (Interface) unit AI analysis unit outside the 600 device 9000 Computer 9010 CPU 9020 Communication interface 9030 Memory 9040 Auxiliary storage device

Claims

1. A voice communication unit that performs voice communication, A call information holding unit that holds call information, An in-device call control unit that controls the voice communication connection of the voice communication unit, Including a voice quality analysis unit that analyzes the content of the voice communication, When the in-device call control unit receives call connection control from a call processing device, it controls the voice communication connection of the voice communication unit that performs voice communication to establish a call, and stores call information indicating the control content related to the voice communication connection control in the call information holding unit, When the voice quality analysis unit analyzes the content of the voice communication performed by the voice communication unit and detects an abnormality of the call through the analysis of the content of the voice communication, the in-device call control unit disconnects the call in which the abnormality is detected in the voice communication unit, and restores the established call based on the call information related to the disconnected call held in the call information holding unit. A voice communication device, The voice quality analysis unit includes an analysis unit based on AI (Artificial Intelligence), and the analysis unit based on AI analyzes the content of the voice communication performed by the voice communication unit by AI analysis, The analysis unit based on AI is configured to output one-way call, misconnection, or interference as an abnormality of the call when one-way call, misconnection, or interference is occurring, and detects the abnormality of the call through the analysis of the content of the voice communication of the voice communication unit. Voice communication device.

2. The analysis unit based on AI is arranged externally, The voice quality analysis unit includes an external interface that communicates with the analysis unit based on AI arranged externally. The voice communication device according to claim 1.

3. After restoring the established call, if the voice quality analysis unit does not detect a new abnormality of the call within a first predetermined period, the voice communication device according to claim 1 reports to the upper device or the maintenance terminal that the abnormality of the call has been restored by restoring the established call.

4. After restoring the established call, furthermore, When the voice quality analysis unit detects a new abnormality in the call, and the in-device call control unit disconnects the call in which the new abnormality is detected and restores the established call a predetermined number of times within a second predetermined period, the in-device call control unit reports to the upper device or the maintenance terminal that there is a hardware failure in the voice communication unit. The voice communication device according to claim 1.

5. A voice communication unit that performs voice communication; A call information holding unit that holds call information; An in-device call control unit that controls the voice communication connection of the voice communication unit; In a voice communication device including a voice quality analysis unit that analyzes the content of the voice communication, When the in-device call control unit receives call connection control from a call processing device, a step of establishing a call by performing voice communication connection control of the voice communication unit that performs voice communication; A step in which the in-device call control unit stores call information indicating control content related to the voice communication connection control in the call information holding unit; A step in which the voice quality analysis unit analyzes the content of the voice communication performed by the voice communication unit; When the voice quality analysis unit detects an abnormality in the call by analyzing the content of the voice communication, the in-device call control unit disconnects the call in which the abnormality is detected in the voice communication unit; A control method for a voice communication device, including a step of restoring the established call based on the call information related to the disconnected call held in the call information holding unit by the voice quality analysis unit. The voice quality analysis unit includes an analysis unit by AI (Artificial Intelligence); A step in which the analysis unit by AI analyzes the content of the voice communication performed by the voice communication unit by AI analysis; A control method for a voice communication device, including a step in which the analysis unit by AI is configured to output one-way call, misconnection, or interference as an abnormality in the call when one-way call, misconnection, or interference is occurring, and detecting an abnormality in the call by analyzing the content of the voice communication of the voice communication unit.

6. A voice communication unit that performs voice communication; In a computer included in a voice communication device including a call information holding unit that holds call information, When receiving call connection control from a call processing device, a process of establishing a call by performing voice communication connection control of the voice communication unit that performs voice communication; A process of storing call information indicating control content related to the voice communication connection control in the call information holding unit, A process of analyzing the content of the voice communication performed by the voice communication unit, A process of disconnecting the call in which the abnormality is detected in the voice communication unit when an abnormality of the call is detected by the analysis of the content of the voice communication, A program for executing a process of restoring the established call based on the call information related to the disconnected call held in the call information holding unit, Causing the computer to, A process of analyzing the content of the voice communication performed by the voice communication unit by AI analysis To execute, The process performed by the AI analysis is configured to output one-way call or misconnection or interference as an abnormality of the call when one-way call or misconnection or interference is occurring, and includes detecting an abnormality of the call by analyzing the content of the voice communication of the voice communication unit. A program.

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