JP4370271B2 - Voice call device, voice call method, and voice call program - Google Patents

Description

  The present invention relates to a voice call device, a voice call method, and a voice call program, and more particularly, to a voice call device that makes a voice call using VoIP (Voice over IP), a voice call method thereof, and a voice call program.

  2. Description of the Related Art Conventionally, there is a growing need to realize so-called IP telephones that make cheap calls using an IP network such as the Internet instead of a public telephone line network even in portable terminal devices such as cellular phones, particularly small portable terminal devices. It is coming. Therefore, it is conceivable to use VoIP which is a voice call over IP. In addition to the function as a telephone, a mobile terminal device generally has a function of browsing the Web or sending and receiving e-mails as a data communication device. Both are realized using a wireless LAN or the like.

  Conventionally, in a resource allocation system, resources are actively collected, and when there is a shortage of free resources, resources are allocated preferentially to important users rather than in order of speed, and idle resources are effectively used. A rotating technique is disclosed (for example, see Patent Document 1).

JP-A-10-97435

  However, the prior art has a problem that even if the network bandwidth and the CPU performance of the mobile terminal device are sufficient, the call quality may not be ensured depending on the application used at the same time. In the first place, when comparing the VoIP communication packet size with the normal Web browsing and mail access communication packet size, the former is small and the latter is large. Therefore, when they are used simultaneously, the quality of the VoIP call is ensured. Sometimes packets are not scheduled. In addition, although the VoIP processing requires real-time processing, there are cases where the CPU cannot be used on time during VoIP processing by another application that is simultaneously used.

  In addition, it is possible to solve the above problems by efficiently performing communication packet scheduling and CPU task scheduling, but for that purpose, facilities (servers, etc.) corresponding to scheduling must be arranged. Furthermore, there is a problem in that a predetermined OS and dedicated software must be installed on the mobile terminal device side.

  An object of the present invention is to provide a voice call device, a voice call method, and a voice call program capable of improving the sound quality in VoIP by a simpler method in order to eliminate the above-described problems caused by the prior art. .

  In order to solve the above-described problems and achieve the object, the voice call device, the voice call method, and the voice call program according to the present invention are executable by the voice call device when making a voice call using VoIP. It is detected whether or not a communication application including a VoIP application is in use, and based on the detected result, when the VoIP application is activated, the operation of the non-VoIP application that is in use is prohibited. It is characterized by that.

  At this time, the operation of the non-VoIP application may be prohibited by forcibly terminating the non-VoIP application being used. In addition, the operation of the communication application may be prohibited by forcibly terminating the communication related to the non-VoIP application being used.

  The voice call device, the voice call method, and the voice call program according to the present invention are VoIP applications (hereinafter referred to as “VoIP applications”) that can be executed by the voice call device when making a voice call using VoIP. And detecting whether or not a communication application including the VoIP application is in use, and prohibiting the activation of the non-VoIP application based on the detected result when the VoIP application is in use. .

  At this time, whether the communication application is in use may be detected by detecting a communication start packet and a communication end packet. Further, the activation or operation of the non-VoIP application from the user may be invalidated to disable the activation or operation, and the entire screen for controlling the display screen and selecting the operation instruction Or you may make it not display a part.

  Furthermore, the user may be notified of the prohibition of activation or operation of the non-VoIP application. In addition, it is possible to receive an input of an instruction for notification and prohibit the activation or operation of the non-VoIP application based on the input instruction.

  According to the present invention, it is possible to obtain a voice call device, a voice call method, and a voice call program capable of making a VoIP call with high sound quality even when the OS or the like does not support communication packet scheduling or CPU task schedule. There is an effect that is.

  Exemplary embodiments of a voice call device, a voice call method, and a voice call program according to the present invention will be explained below in detail with reference to the accompanying drawings.

(Hardware configuration of voice communication device)
First, the voice call device according to the present embodiment will be described. FIG. 1 is an explanatory diagram showing the hardware configuration of the voice communication device according to this embodiment of the present invention. In FIG. 1, for example, a voice communication device in the form of a mobile phone or a PDA has a power source 100, a CPU 101, a memory 102, an operation button 103, a display 104, a microphone 105, a speaker 106, and a WLAN interface. 107.

  The power supply 100 supplies power to each unit in the voice communication device. The CPU 101 controls the entire voice communication device by executing a program stored in the memory 102. The memory 102 stores programs, data, and the like. The operation button 103 is composed of numeric keys, a cross key, and the like. The display 104 displays a menu or the like. The display 104 is, for example, a liquid crystal display or an organic EL display. The microphone 105 inputs voice into the voice call device. The speaker 106 outputs sound to the outside of the apparatus. The WLAN interface 107 controls wireless communication based on IEEE 802.11b or the like.

(Functional configuration of voice communication device)
Next, a functional configuration of the voice call device according to the present embodiment will be described. FIG. 2 is a block diagram showing a functional configuration of the voice communication device according to this embodiment of the present invention. 2, the voice call device includes a communication application 200 stored in the memory 102, a detection unit 201, an operation control unit 202, a display screen 203, a notification unit 204, and an input unit 205. It has become.

  The detection unit 201 detects whether a communication application including a VoIP application is in use. Specifically, for example, the detection unit 201 detects whether the communication application 200 is in use by detecting a communication start packet and a communication end packet. However, the detection method is not limited to this method.

  The operation control unit 202 prohibits the operation of a communication application (non-VoIP application) other than the VoIP application that is being used when the VoIP application is activated based on the result detected by the detection unit 201 (non-VoIP application). VoIP application is suppressed).

  For example, the operation control unit 202 may prohibit the operation of the non-VoIP application by forcibly terminating the non-VoIP application being used, or forcibly terminate the communication related to the non-VoIP application being used. By doing so, the operation of the communication application may be prohibited. More specifically, for example, when the VoIP application is activated by the detection unit 201, the operation control unit 202 broadcasts a stop command to each non-VoIP application. Each non-VoIP application may forcibly close all open sockets when a stop command is received.

  In addition, the operation control unit 202 may prohibit the operation by invalidating the operation instruction of the non-VoIP application from the user. Further, the operation control unit 202 may prohibit the operation by controlling the display screen 203 so as not to display all or part of the screen for selecting the operation instruction, that is, the operation instruction. Details of these prohibition methods will be described later.

  Further, the operation control unit 202 prohibits the activation of the non-VoIP application based on the result detected by the detection unit 201 when the VoIP application is in use. Specifically, for example, the operation control unit 202 may prohibit the activation by invalidating an instruction to activate the non-VoIP application from the user. Further, the operation control unit 202 may prohibit the activation by controlling the display screen 203 so as not to display all or a part of the screen for selecting the operation instruction, that is, the activation instruction.

  For example, the detection unit 201 and the operation control unit 202 realize the respective functions when the CPU 101 illustrated in FIG. 1 executes a program stored in the memory 102. The display screen 203 realizes its function by the display 104 shown in FIG.

  The notification unit 204 notifies the user that the non-VoIP application is activated or prohibited. In this case, for example, notification may be performed by controlling the display screen 203 (display 104 shown in FIG. 1), or notification may be performed by controlling the speaker 106 shown in FIG. Furthermore, notification may be performed by controlling both the display screen 203 and the speaker 106. Further, the input unit 205 receives an instruction input from the user for the notification on the display screen 203 (or the speaker 106). At that time, the operation control unit 202 may prohibit the activation or operation of the non-VoIP application based on the instruction input by the input unit 205.

  The notification unit 204 realizes its function by, for example, the CPU 101 shown in FIG. 1 executing a program stored in the memory 102. Also, the input unit 205 realizes its function by the operation button 103 shown in FIG.

(Contents of process management table)
FIGS. 3A and 3B are explanatory diagrams illustrating an example of a process management table. 3A and 3B, the process management table is stored in the memory 102 illustrated in FIG. 1 and includes the detection unit 201 illustrated in FIG. The process management table has a structure including an “application” field, a “process identifier” field, and an “operation” field. Each communication application installed in the voice call device is registered in the “application” field. ing. In the “process identifier” column, an identifier for identifying a communication application in the “application” column is registered.

  In the “operation” column, information regarding the operation state of each communication application is registered. The operation is one of “in use”, “not used”, “in operation”, “startup suppression”, and “operation suppression”. The detection unit 201 illustrated in FIG. 2 monitors these operations and detects that each communication application 200 is started or started.

(Voice call device processing procedure)
Next, the processing procedure of the voice call device will be described. FIG. 4 is a flowchart showing a processing procedure of the voice communication device according to the embodiment of the present invention. In the flowchart of FIG. 4, after the voice call device is turned on, the process of the voice call device is activated and the use is monitored (step S401).

  Then, it is determined whether activation or use of an application, particularly a communication application, is started (step S402). If activation or use is not started (step S402: No), the process returns to step S401 and continues to be monitored. . In step S402, when activation or use of the application is started (step S402: Yes), it is next determined whether or not the VoIP application is being used (step S403). Whether or not it is in use can be determined by referring to the “operation” column of the process management table shown in FIGS. 3A and 3B, for example.

  For example, in the case of FIG. 3A, since the operation of the VoIP application (process identifier: A) is “unused” (step S403: No), the process proceeds to step S404. On the other hand, in the case of FIG. 3B, since the operation of the VoIP application (process identifier: A) is “in use” (step S403: Yes), the process proceeds to step S405.

  In step S404, it is determined whether or not the activation has been started for the VoIP application (step S404). The activation of the VoIP application is started, for example, when a call operation is started with VoIP or when an incoming call is received with VoIP. Here, when the activation is not a VoIP application, that is, a non-VoIP application (step S404: No), a series of processing is terminated (returned) without doing anything, and the process is activated / used again. Return to the monitoring state (step S401).

  On the other hand, if the VoIP application is in use in step S403 (step S403: Yes), or if the VoIP application is not in use (step S403: No), and the VoIP application is started (step S403). S404: Yes) informs the user whether the VoIP application may be preferentially controlled (step S405).

  Then, it is determined whether or not there is a permission instruction from the user for the notification of priority control (step S406). The priority control notification is not necessarily performed, and the priority control of the VoIP application may be started without notifying the priority control. In that case, steps S405 and S406 are unnecessary.

  In step S406, when there is no permission instruction from the user, that is, when there is an instruction not to permit (step S406: No), the series of processing ends (returns), and the process activation / use monitoring state ( Returning to step S401). Accordingly, since priority control is not performed, use of a non-VoIP application is not suppressed even when the VoIP application is being used.

  If there is a permission instruction from the user in step S406 (step S406: Yes), VoIP application priority control (non-VoIP application suppression control) is started (step S407), and the “operation” column of the process management table is set. The “VoIP application” is updated from “unused” to “in operation” (if it is already “in operation”, it is maintained). At the same time, the “operation” application is updated to “operation suppression”, and the “unused” application is updated to “startup suppression”. That is, the process management table shown in FIG. 3A is updated to the process management table shown in FIG.

  Thereafter, it is determined whether or not the use of the VoIP application has ended, or whether or not the process of the VoIP application has ended (step S408). If the VoIP application has ended (step S408: Yes), the VoIP application Is canceled (step S409), a series of processing is terminated (returned), and the process activation / use monitoring state is again returned (step S401).

  At the same time, the “VoIP application” in the “Operation” column of the process management table is updated from “Active” to “Unused”. At the same time, the “inhibited operation” application is set to “in operation” (if the application is terminated, it may be updated to “unused” instead of “in operation”), and the “inactive activation” application Is updated to “unused”. That is, the process management table shown in FIG. 3-2 is updated to the process management table shown in FIG. When the application is terminated by priority control, the “operation inhibited” application may be updated to “unused” instead of “operating”.

(Example of display screen)
5-11 is explanatory drawing which shows an example of the display content of the display screen 203 (display 104). In FIG. 5, before performing priority control of the VoIP application, a window 500 is popped up on the display screen 203 (display 104).

  In window 500, "Do you want to preferentially control VoIP applications? (Or is the communication application other than the VoIP application inhibited / controlled?) And a “YES” button 501 and a “NO” button 502 are displayed. When the “YES” button 501 is selected (pressed), a permission instruction (step S406: Yes shown in FIG. 4) is obtained, and when the “NO” button 502 is selected (pressed), an instruction not permitted (same as above). Step S406: No). When either “YES” button 501 or “NO” button 502 is pressed, window 500 is deleted.

  FIG. 6A is an example of a menu screen for selecting and starting a communication application displayed on the display screen 203 (display 104). Normally, a list of items related to various applications including a selectable communication application is displayed. To do. While the VoIP application is in use, the menu screen itself shown in FIG. 6-1 may not be displayed. As shown in FIG. 6-2, communication applications (mailers and Web browsers) that perform suppression control are displayed. It is also possible to hide and display only applications (word processors and spreadsheets) other than communication that are not subject to suppression control.

  Furthermore, as shown in FIG. 6-3, the display content is the same as that of the normal display (FIG. 6-1), and only the target of the suppression control is grayed out so that the user can be informed that it cannot be selected. Also good. Controls the cursor not to move to grayed-out items. When the use of the VoIP application ends, the normal display (FIG. 6-1) is restored.

  In addition, while using the VoIP application, as shown in FIG. 7, by displaying the telephone number of the communication destination on the display screen 203 (display 104), it is shown that the VoIP application is being used. The non-VoIP application may not be selected by not displaying the menu screen shown in FIG. Similarly, as shown in FIG. 8, the menu screen shown in FIG. 6A is not displayed by displaying “in-use of VoIP phone” on the display screen 203 (display 104), so that non-VoIP is displayed. The application may not be selected.

  Similarly, FIG. 9 is an example showing the call time on the display screen 203 (display 104), FIG. 10 is an example showing the current time on the display screen 203 (display 104), and FIG. In this example, a calendar is shown on the screen 203 (display 104). In either case, the VoIP application is being used, and the menu screen shown in FIG. 6A is not displayed so that the non-VoIP application is not selected. When the use of the VoIP application is finished, the normal display (FIG. 6-1) can be displayed.

  FIG. 12 is an explanatory diagram showing the appearance of the voice call device. In FIG. 12, reference numeral 1200 denotes a voice call device, which is pressed when a shortcut key in which a predetermined non-VoIP application is assigned in advance to any of the buttons 1201 (operation buttons 103) of the voice call device 1200 is pressed. By disabling (key input), a non-VoIP application may not be selected. Then, when the use of the VoIP application is finished, the pressing of the shortcut key is validated again.

  As described above, according to the present embodiment, when performing a voice call using VoIP, a communication application including a VoIP application that can be executed by the voice call device is used by the detection unit 201. When the VoIP application is activated based on the detected result, the operation control unit 202 prohibits the operation of the non-VoIP application that is being used. It can be used with priority, and real-time communication can be ensured. Therefore, it is possible to make a VoIP call with high sound quality. At this time, the OS or the like may not support communication packet scheduling or CPU task scheduling.

  At this time, the non-VoIP application being used is forcibly terminated to prohibit the operation of the non-VoIP application, so that the VoIP application can preferentially use the network bandwidth. In addition, by forcibly terminating communication related to a non-VoIP application that is in use, the operation of the communication application is prohibited, thereby realizing VoIP real-time performance.

  In addition, according to the present embodiment, when a voice call is performed using VoIP, it is detected whether or not a communication application including a VoIP application that can be executed by the voice call device is in use. Based on the result, when a VoIP application is in use, the activation of a non-VoIP application is prohibited. Therefore, other applications are not activated during VoIP communication, and the network bandwidth is used exclusively. can do.

  At this time, it is possible to detect whether or not the communication application is in use by detecting the communication start packet and the communication end packet. Further, the activation or operation of the non-VoIP application from the user may be invalidated to prohibit the activation or operation, and all or one of the screens for selecting the operation instruction by controlling the display screen. The part can be not displayed.

  Furthermore, it is possible to notify the user of the prohibition of activation or operation of the non-VoIP application. In addition, it is possible to accept input of an instruction for notification, and to prohibit activation or operation of a non-VoIP application based on the input instruction. Thereby, priority can be given to data communication rather than a telephone according to a user's request.

  The voice call method described in this embodiment can be realized by executing a program prepared in advance on a computer such as a mobile phone, a PDA, a personal computer, or a workstation. This program is recorded on a computer-readable recording medium such as a RAM, a hard disk, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed by being read from the recording medium by the computer. Further, this program may be a transmission medium that can be distributed via a network such as the Internet.

(Supplementary Note 1) In a voice call device for making a voice call using VoIP (Voice over IP),
Detection means for detecting whether or not a communication application including a VoIP application (hereinafter referred to as “VoIP application”) that can be executed by the voice communication device is in use;
An operation for prohibiting operation of a communication application other than the VoIP application (hereinafter referred to as “non-VoIP application”) in use when the VoIP application is activated based on the result detected by the detection unit. Control means;
A voice communication device comprising:

(Supplementary note 2) The voice communication device according to supplementary note 1, wherein the operation control means prohibits the operation of the non-VoIP application by forcibly terminating the non-VoIP application in use.

(Supplementary note 3) The voice communication device according to supplementary note 1, wherein the operation control means prohibits the operation of the communication application by forcibly terminating the communication related to the non-VoIP application in use.

(Supplementary Note 4) In a voice call device for making a voice call using VoIP (Voice over IP),
Detection means for detecting whether or not a communication application including a VoIP application (hereinafter referred to as “VoIP application”) that can be executed by the voice communication device is in use;
An operation control means for prohibiting activation of a communication application other than the VoIP application (hereinafter referred to as “non-VoIP application”) when the VoIP application is in use, based on a result detected by the detection means; ,
A voice communication device comprising:

(Additional remark 5) The said detection means detects whether the said communication application is in use by detecting a communication start packet and a communication end packet, Any one of Additional remark 1-4 characterized by the above-mentioned The voice communication device described in 1.

(Additional remark 6) The said operation control means prohibits the said start or operation | movement by invalidating the instruction | indication of the start or operation | movement of the said non-VoIP application from the said user. The voice communication device according to any one of the above.

(Supplementary note 7) The voice call according to any one of supplementary notes 1 to 6, wherein the operation control means controls a display screen so as not to display all or a part of a screen for selecting an operation instruction. apparatus.

(Supplementary note 8) The voice communication device according to any one of supplementary notes 1 to 5, further comprising notification means for notifying a user of activation or prohibition of the operation of the non-VoIP application.

(Supplementary note 9) Provided with an input means for receiving an instruction input for the notification by the notification means,
9. The voice call device according to appendix 8, wherein the operation control unit prohibits activation or operation of the non-VoIP application based on an instruction input by the input unit.

(Additional remark 10) In the voice call method in the voice call apparatus which performs a voice call using VoIP (Voice over IP),
A detection step of detecting whether or not a communication application including a VoIP application (hereinafter referred to as “VoIP application”) that can be executed by the voice call device is in use;
An operation for prohibiting the operation of a communication application other than the VoIP application (hereinafter referred to as “non-VoIP application”) that is in use when the VoIP application is activated based on the result detected by the detection step. Control process;
A voice call method characterized by including:

(Additional remark 11) In the voice call method in the voice call apparatus which performs a voice call using VoIP (Voice over IP),
A detection step of detecting whether or not a communication application including a VoIP application (hereinafter referred to as “VoIP application”) that can be executed by the voice call device is in use;
An operation control step for prohibiting activation of a communication application other than the VoIP application (hereinafter referred to as “non-VoIP application”) when the VoIP application is in use, based on a result detected by the detection step; ,
A voice call method characterized by including:

(Supplementary Note 12) In a voice call program in a voice call device for making a voice call using VoIP (Voice over IP),
A detection step of detecting whether or not a communication application including a VoIP application (hereinafter referred to as “VoIP application”) that can be executed by the voice call device is in use;
An operation for prohibiting the operation of a communication application other than the VoIP application (hereinafter referred to as “non-VoIP application”) that is in use when the VoIP application is activated based on the result detected by the detection step. Control process;
A voice call program that causes a processor to execute.

(Supplementary note 13) In a voice call program in a voice call device for making a voice call using VoIP (Voice over IP),
A detection step of detecting whether or not a communication application including a VoIP application (hereinafter referred to as “VoIP application”) that can be executed by the voice call device is in use;
An operation control step for prohibiting activation of a communication application other than the VoIP application (hereinafter referred to as “non-VoIP application”) when the VoIP application is in use, based on a result detected by the detection step; ,
A voice call program that causes a processor to execute.

  As described above, the voice call device, the voice call method, and the voice call program according to the present invention can be used for voice calls using a VoIP application, and in particular, portable information processing terminal devices such as mobile phones and PDAs. Suitable for

It is a block diagram which shows an example of the hardware constitutions of the voice call apparatus concerning this Embodiment of this invention. It is a block diagram which shows the functional structure of the voice call apparatus concerning this Embodiment of this invention. It is explanatory drawing which shows an example of a process management table. It is explanatory drawing which shows another example of a process management table. It is a flowchart which shows the procedure of the process of the voice call apparatus concerning this Embodiment of this invention. It is explanatory drawing which shows an example of the display content of a display screen. It is explanatory drawing which shows another example of the display content of a display screen. It is explanatory drawing which shows another example of the display content of a display screen. It is explanatory drawing which shows another example of the display content of a display screen. It is explanatory drawing which shows another example of the display content of a display screen. It is explanatory drawing which shows another example of the display content of a display screen. It is explanatory drawing which shows another example of the display content of a display screen. It is explanatory drawing which shows another example of the display content of a display screen. It is explanatory drawing which shows another example of the display content of a display screen. It is explanatory drawing which shows the external appearance of a voice call apparatus.

Explanation of symbols

100 power supply 101 CPU
DESCRIPTION OF SYMBOLS 102 Memory 103 Operation button 104 Display 105 Microphone 106 Speaker 107 WLAN interface 200 Communication application 201 Detection part 202 Operation control part 203 Display screen 204 Notification part 205 Input part 1200 Voice communication apparatus

Claims (8)

In a voice call device for making a voice call using VoIP (Voice over IP),
Detection means for detecting whether or not a communication application including a VoIP application (hereinafter referred to as “VoIP application”) that can be executed by the voice communication device is in use ;
When the detecting means detects that the VoIP application is in use, the menu screen consisting of items relating to selectable applications of operation instructions is not displayed on the display screen or is activated on the menu screen No option is displayed on the display screen for a communication application other than the VoIP application (hereinafter referred to as “non-VoIP application”), or the non-VoIP application on the menu screen is instructed to operate. An operation control means for displaying a target option on the display screen in a state where the option cannot be selected;
A voice communication device comprising: The operation control means forcibly terminates communication related to the non-VoIP application that is in use when the detecting means detects that the VoIP application is in use. The voice communication device described in 1. In a voice call device for making a voice call using VoIP (Voice over IP),
Detection means for detecting whether or not a communication application including a VoIP application (hereinafter referred to as “VoIP application”) that can be executed by the voice communication device is in use;
When the detecting means detects that the VoIP application is in use, the menu screen for selecting an operation instruction is not displayed on the display screen, or the VoIP application in use on the menu screen is not displayed. Do not display on the display screen the option that targets other communication applications (hereinafter referred to as “non-VoIP application”), or select the option on the menu screen that targets the non-VoIP application Operation control means for displaying on the display screen in an impossible state;
A voice communication device comprising:   4. The voice call device according to claim 3, wherein the detection unit detects whether the communication application is in use by detecting a communication start packet and a communication end packet. In a voice call method in a voice call device for making a voice call using VoIP (Voice over IP),
A detection step of detecting whether or not a communication application including a VoIP application (hereinafter referred to as “VoIP application”) that can be executed by the voice call device is in use ;
When the detection step detects that the VoIP application is in use, the menu screen consisting of items related to the selectable application of the operation instruction is not displayed on the display screen, or activated on the menu screen No option is displayed on the display screen for a communication application other than the VoIP application (hereinafter referred to as “non-VoIP application”), or the non-VoIP application on the menu screen is instructed to operate. An operation control process for displaying a target option on a display screen in a state where the option cannot be selected;
A voice call method characterized by including: In a voice call method in a voice call device for making a voice call using VoIP (Voice over IP),
A detection step of detecting whether or not a communication application including a VoIP application (hereinafter referred to as “VoIP application”) that can be executed by the voice call device is in use;
When the detection step detects that the VoIP application is in use, the menu screen for selecting an operation instruction is not displayed on the display screen, or the VoIP application in use on the menu screen is not displayed. Do not display on the display screen the option that targets other communication applications (hereinafter referred to as “non-VoIP application”), or select the option on the menu screen that targets the non-VoIP application An operation control process to display on the display screen in an impossible state;
A voice call method characterized by including: In a voice call program in a voice call device that makes a voice call using VoIP (Voice over IP),
A detection step of detecting whether or not a communication application including a VoIP application (hereinafter referred to as “VoIP application”) that can be executed by the voice call device is in use ;
When the detection step detects that the VoIP application is in use, the menu screen consisting of items relating to the selectable application of the operation instruction is not displayed on the display screen, or is activated on the menu screen No option for displaying a communication application other than the VoIP application (hereinafter referred to as “non-VoIP application”) on the display screen is displayed on the display screen, or the non-VoIP application on the menu screen is not operated. An operation control process for displaying a target option on a display screen in a state where the option cannot be selected;
A voice call program that causes a processor to execute. In a voice call program in a voice call device that makes a voice call using VoIP (Voice over IP),
A detection step of detecting whether or not a communication application including a VoIP application (hereinafter referred to as “VoIP application”) that can be executed by the voice call device is in use;
When the detection step detects that the VoIP application is in use, the menu screen for selecting an operation instruction is not displayed on the display screen, or the VoIP application in use on the menu screen is not displayed. Do not display on the display screen the option that targets other communication applications (hereinafter referred to as “non-VoIP application”) or select the option that targets the non-VoIP application on the menu screen An operation control process to display on the display screen in an impossible state;
A voice call program that causes a processor to execute.

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