JP4545124B2 - Communication apparatus and communication system - Google Patents

Description

  The present invention relates to a communication apparatus and a communication system, and more particularly to a communication apparatus and a communication system used for data protection.

  In recent years, digital telephones (IP telephones, PHS, etc.) mainly used as extension telephones in the workplace or the like can hold personal information, customer information, etc. in a recording device. However, if such a digital phone is stolen or left behind, personal information and customer information may be leaked.

For this reason, various methods for preventing leakage of personal information and customer information are known. For example, conventional digital telephones use a method for protecting personal information by password, biometric authentication, ID card authentication, etc. There is known a method of enabling a security function of a mobile terminal by transmitting a predetermined command from the outside during theft (see, for example, Patent Document 1).
JP 2000-253457 A

  However, in the method using a password, there is a problem that the user (user) needs to perform an operation every time it is used, so that it is not practical. In addition, there is a problem that devices using biometric authentication or ID card authentication are expensive.

  Furthermore, in Patent Document 1, since the user needs to recognize the occurrence of the theft of the mobile terminal and perform a predetermined operation, the information in the mobile terminal cannot be protected unless the user is aware of the theft. There is.

  The present invention has been made in view of these points, and an object of the present invention is to provide a communication device and a communication system that can prevent information leakage easily and reliably.

  In order to solve the above problem, the present invention provides a communication apparatus that performs processing as shown in FIG. A communication device 1 shown in FIG. 1 is a device that stores protection data and is in a call-enabled state when connected to the exchange 2. The communication device 1 has the following functions.

The notification unit 3 notifies the user of the protection data 4.
The connection state determination unit 5 determines the connection state with the exchange 2.
The notification permitting unit 6 permits the notification of the protection data 4 of the notifying unit 3 only when a call with the exchange 2 is possible.

  According to such a communication apparatus 1, the connection state determination unit 5 determines the connection state with the exchange 2. The notification permission unit 6 permits the notification of the protection data 4 of the notification unit 3 only when the communication with the exchange 2 is possible. Thereafter, the notification unit 3 notifies the user of the protected data 4.

  According to the present invention, since the notification of the protection data is permitted only when the call is ready, the protection data can be easily and surely prevented even if the communication device is stolen. Leakage can be prevented.

  In addition, since the leakage of data can be prevented without intentional operation by the user, it is easy to use and excellent in practical use.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, an outline of the present invention will be described, and then an embodiment will be described.
FIG. 1 is a diagram showing an outline of the present invention.

  The communication device 1 is a device that stores protection data and enters a call-enabled state when connected to an exchange (for example, a PBX (Private Branch eXchange) 2). The communication device 1 has the following functions.

The notification unit 3 has a function of notifying the user of the protection data 4. The notification unit 3 is controlled by the notification permission unit 6.
The connection state determination unit 5 determines the connection state with the exchange 2. The connection state determination unit 5 determines whether or not a call is possible.

  The notification permission unit 6 accesses the connection state determination unit 5 and permits the notification of the protection data 4 of the notification unit 3 only when the communication with the exchange 2 is possible. The connection state determination unit 5 and the notification permission unit 6 are configured by one function of a CPU (Central Processing Unit).

  According to such a communication apparatus 1, the connection state determination unit 5 determines the connection state with the exchange 2. The notification permission unit 6 permits the notification of the protection data 4 of the notification unit 3 only when the communication with the exchange 2 is possible. Thereafter, the notification unit 3 notifies the user of the protected data 4.

Embodiments of the present invention will be described below.
FIG. 2 is a diagram illustrating the communication system according to the embodiment.
The communication system includes an exchange 102, a plurality of digital telephones (communication devices) 101, a base station 103, and a plurality of wireless digital telephones (communication devices) 104.

The exchange 102 is connected to the public telephone network 106 via a communication line.
A plurality of digital telephones 101 and a base station 103 are connected to the exchange 102 via a communication line.

A plurality of wireless digital telephones 104 are connected to the base station 103.
Each digital telephone 101 and each wireless digital telephone 104 perform setting registration with the exchange 102, so that information of the digital telephone 101 and the wireless digital telephone 104 is finally registered in the exchange 102. Is possible.

Since the functions of the digital telephone 101 and the wireless digital telephone 104 are substantially equal, the functions of the digital telephone 101 will be described below representatively.
FIG. 3 is a plan view showing the digital telephone.

  The digital telephone 101 includes a receiver 401, a voice output unit 402, a monitor 403, and operation buttons 404. The operation button 404 includes a selection button for selecting an item on the display screen displayed on the monitor 403, a confirmation button for confirming the selected item, and a cancel button for canceling the selected item and returning to the previous screen. ing. The user can browse personal data, customer data, and the like stored in the digital telephone 101 by operating the operation buttons 404 while viewing the display screen.

FIG. 4 is a diagram showing functional blocks of the digital telephone.
The entire digital telephone 101 is controlled by a CPU 301. The CPU 301 has a RAM (Random Access Memory) 302, a ROM (Read Only Memory) 303, a display unit 304, an operation unit 305, a speech network unit 306, a network connection unit 308, a warning sound control unit 311a, a nonvolatile memory via a bus 313. The memory 312 is connected.

  The RAM 302 temporarily stores at least part of an OS (Operating System) program and application programs to be executed by the CPU 301. The RAM 302 stores various data necessary for processing by the CPU 301. The ROM 303 stores an OS and application programs. A program file is stored in the ROM 303.

  The display unit 304 displays an image such as characters and numbers on the screen of the monitor 403 in accordance with a command from the CPU 301. An operation button 404 is connected to the operation unit 305. The operation unit 305 transmits a signal sent from the operation button 404 to the CPU 301 via the bus 313.

  The speech network unit 306 is connected to the network connection unit 308. The speech network unit 306 performs network connection with the exchange 102 via the network connection unit 308. After that, the speech network unit 306 notifies the CPU 301 that it is in a call ready state. As a result, the CPU 301 can exchange data with the exchange 102.

The handset unit 307 is connected to the handset 401.
The network connection unit 308 receives data from the exchange 102 and sends it to the speech network unit 306. Also, the data received from the speech network unit 306 is transmitted to the exchange 102. This enables a call.

The power source 309 transforms the AC voltage input via the AC adapter 310 and supplies a driving voltage to each unit.
The power may be supplied not only from the AC adapter but also from the network connection unit 308 via a LAN cable.

The warning sound control unit 311a controls the size of the warning sound and the like. The warning sound control unit 311a is connected to a warning sound sounding unit 311b that sounds a warning sound.
The warning sounding unit 311b is connected to the audio output unit 402. The display unit 304 and the warning sounding unit 311b constitute a main part of the notification unit.

The nonvolatile memory 312 has a personal data storage unit.
FIG. 5 is a diagram illustrating a personal data storage unit.
In FIG. 5, whether or not all the personal data (phone book, incoming call history, outgoing call history, call recording) can be viewed is managed by one personal data browsing flag.

  The personal data storage unit 312 a has a personal data browsing availability flag area 3121, a telephone directory area 3122, an incoming call history area 3123, an outgoing call history area 3124, and a call recording area 3125.

  As described above, the personal data browsing flag set in the personal data browsing flag area 3121 is a flag for determining whether or not personal data can be browsed, and this flag is “permitted” (“1”). When set to “No”, browsing of data stored in each area is permitted, and when set to “No” (“0”), browsing is rejected.

FIG. 6 is a diagram illustrating another example of the personal data storage unit.
The personal data storage unit 312b does not have a specific area for storing personal data, and has a personal data browsing flag for each personal data. Specifically, from the left side in FIG. 6, a personal data browsing availability flag (1 bit) storage area 3126, a telephone directory / incoming number / calling number / call recording identification flag (each 1 bit) storage area 3127, and data (n Bit) storage area 3128. In this way, the memory area can be used effectively.

By the way, as described above, the digital telephone 101 is in a state in which a call can be made (hereinafter referred to as a call ready state) only after being registered in the exchange 102.
Here, the telephone call ready state means a state in which the telephone is just activated (standby state). In other words, it means a state in which a telephone call can be made by raising the handset 401 from this state and operating the operation button 404 to dial a predetermined telephone number. The command communication is established between the exchange 102 and the digital telephone 101 only after communication is possible.
In addition, the CPU 301 sets a personal data browsing permission flag in the nonvolatile memory 312 to “permitted”. Thereby, the user can browse personal data.

When browsing the personal data, the user operates the operation button 404 to make a browsing request.
FIG. 7 is a diagram showing the contents displayed on the monitor of the digital telephone in response to the browsing request.
When the personal data can be browsed, a browse screen is displayed on the monitor 403 (see FIG. 7A).

  As shown in FIG. 7A, the browsing screen is provided with items of “1. Phone book browsing”, “2. Incoming call history display”, and “3. Outgoing history display”. When the user operates the operation button 404 to select an item and then presses the confirm button, the CPU 301 moves the browsing screen to the next menu via the display unit 304, and details of the item selected on the monitor 403 are displayed. Display data.

On the other hand, when personal data is not in a browsable state (when browsing is prohibited), a browsing restriction screen is displayed on the monitor 403 (see FIGS. 7B and 7C).
For example, as shown in FIG. 7B, the viewing restriction screen displays “(operation restricted)” on the right side of each item and notifies the user that the operation restriction (viewing restriction) exists. Or, as shown in FIG. 7 (c), by reducing the brightness of the display of each item, the visibility is deteriorated, and notification that there is an operation restriction exists. Good. However, only the “return” part prompts the user to press the cancel button without reducing the brightness.

  When the browsing restriction screen is displayed on the monitor 403, even if an attempt is made to browse personal data, a warning sound is emitted from the speaker 402 without shifting to the next menu. The warning sound may be sampling data stored in the ROM 303 or a beep sound that the CPU 301 has.

Next, processing of the digital telephone 101 (wireless digital telephone 104) will be described.
FIG. 8 is a flowchart showing processing of the digital telephone. The main body of the following operation is the CPU 301.

First, when a voltage is applied to the CPU 301, the personal data browsing availability flag stored in the non-volatile memory 312 is set to “No” (step S11).
Next, it is determined whether or not a call is possible (step S12).

  When it is not in a state where communication is possible (No in Step S12), it is determined whether or not there is a browsing request via the operation unit 305 (Step S13). When there is no browsing request (No in step S13), the process proceeds to step S12 and the operation is continued. If there is a browsing request (Yes in step S13), the display unit 304 is instructed to display a browsing restriction screen (step S14). Thereafter, the process proceeds to step S14 and the operation is continued.

On the other hand, if it is possible to call (Yes in step S12), the personal data browsing flag is set to “permitted” (step S15).
Next, it is determined whether there is a browsing request (step S16). When there is no browsing request (No in step S16), the browsing request is waited. If there is a browsing request (Yes in step S16), the display unit 304 is instructed to display a browsing restriction screen (step S17). Thereafter, the process proceeds to step S16 to continue the operation.

Next, setting registration processing for setting the digital telephone 101 in a call-enabled state will be described.
FIG. 9 is a sequence diagram illustrating the setting registration process.
First, the digital telephone 101 transmits an activation completion command to the exchange 102 (step S121).

When receiving the activation completion command, the exchange 102 transmits an ack and a reset command (steps S122 and S123).
When receiving the ack and the reset command, the digital telephone 101 transmits the activation completion command again (step S124).

  When the exchange 102 receives the activation completion command again, it transmits an ack and a display data command (steps S125 and S126). As a result, the start-up is completed and a call can be made.

  As described above, according to the communication system of the present embodiment, the CPU 301 is stored in the non-volatile memory 312 only when data is exchanged with the exchange 102 and the digital telephone 101 or the wireless digital telephone 104 is ready to talk. Since a certain personal data browsing permission flag is set to “permitted”, the personal data of the digital telephone 101 or the wireless digital telephone 104 cannot be browsed unless connected to the exchange 102. Therefore, even if the digital telephone set 101 or the wireless digital telephone set 104 is stolen, for example, it is possible to easily and reliably prevent browsing of personal data, so that data leakage can be prevented.

In addition, since the leakage of data can be prevented without intentional operation by the user, it is easy to use and excellent in practical use.
Next, a communication system according to the second embodiment will be described.

Hereinafter, the communication system according to the second embodiment will be described with a focus on differences from the first embodiment described above, and descriptions of similar matters will be omitted.
The communication system according to the second embodiment is different in that the exchange 102 transmits a release code that permits browsing of personal data.

  The exchange 102 transmits a release code to the digital telephone set 101 and the wireless digital telephone set 104 that are ready for a call. The speech network unit 306 receives the release code from the network connection unit 308 and sends it to the CPU 301. Upon receipt of the release code, the CPU 301 sets a personal data browsing permission flag in the nonvolatile memory 312 to “permitted” to enable browsing of personal data.

  In addition, the CPU 301 includes a timer, and can count the time from when the power is turned on and the voltage is applied to the CPU 301, the time from when the setting registration process is started, and the like.

Next, processing of the digital telephone 101 (wireless digital telephone 104) according to the second embodiment will be described.
FIG. 10 is a flowchart illustrating processing of the digital telephone according to the second embodiment.

Steps S21 to S24: The same operations as in steps S11 to S14 in FIG. 8 are performed.
If it is determined in step S22 that the call is possible (Yes in step S22), it is determined whether a release code is received (step S25).

  If the release code has not been received (No in step S25), it is determined whether or not the timer has timed out (step S26). As the time until timeout, the above-described time can be used.

  If the timer has not timed out (No in step S26), it is determined whether there is a browsing request (step S27). When there is no browsing request (No in step S27), the process proceeds to step S25 and the operation is continued. When there is a browsing request (Yes in step S27), the display unit 304 is instructed to display a browsing restriction screen (step S28). Thereafter, the process proceeds to step S25 to continue the operation.

  On the other hand, if the timer has timed out (Yes in step S26), it is determined whether there is a browsing request (step S29). When there is no browsing request (No in step S29), the browsing request is waited. If there is a browsing request (Yes in step S29), the display unit 304 is instructed to display a browsing restriction screen (step S30). Thereafter, the process proceeds to step S30 and the operation is continued.

  On the other hand, when the release code is received in step S25 (Yes in step S25), the personal data browsing permission flag is set to “permitted” (step S31). Next, it is determined whether there is a browsing request (step S32). When there is no browsing request (No in step S32), the browsing request is waited. When there is a browsing request (Yes in step S32), the display unit 304 is instructed to display a browsing screen (step S33). Thereafter, the process proceeds to step S32 to continue the operation.

Next, reception of the release code in step S25 will be described.
FIG. 11 is a sequence diagram for explaining the release code.
Steps S251 to 256: The same operations as in steps S121 to S126 of FIG. 9 are performed. When the telephone call is ready, the exchange 102 transmits a release code to the digital telephone 101 (step S257).

  According to the communication system of the second embodiment, the same effect as that of the communication system of the first embodiment can be obtained. And according to the communication system of 2nd Embodiment, browsing of personal data can be restrict | limited even from a call possible state by using a cancellation | release code | cord | chord. Even if the digital telephone set 101 or the wireless digital telephone set 104 is connected to an exchange that does not have a function of sending a release code, personal data browsing is restricted, so that data leakage can be prevented more reliably. Further, since the call is secured, for example, maintenance management can be facilitated.

Next, a communication system according to a third embodiment will be described.
FIG. 12 is a diagram illustrating a communication system according to the third embodiment.
Hereinafter, the communication system according to the third embodiment will be described with a focus on differences from the first embodiment described above, and descriptions of similar matters will be omitted.

The communication system according to the third embodiment is different in that the digital telephone 101a and the wireless digital telephone 104a are IP (Internet Protocol) telephones.
The exchange 102a is connected to a network (LAN / WAN) 106a.

A plurality of digital telephones 101a and a base station 103a are connected to the exchange 102a via a hub (HUB) 105a via a network line.
A plurality of wireless digital telephones 104a are connected to the base station 103a.

The exchange 102a exchanges data with each digital telephone 101a and each wireless digital telephone 104a via the hub 105a.
Each digital telephone 101a is connected to a PC (Personal Computer) 107a. A connection method between the digital telephone 101a and the PC 107a is not particularly limited, and examples thereof include a USB (Universal Serial Bus), a serial cable, a parallel cable, and a LAN cable. Hereinafter, a case where connection is typically performed using a USB cable will be described.

FIG. 13 is a block diagram illustrating functions of the digital telephone according to the third embodiment. In FIG. 13, parts having the same functions as those of the digital telephone 101 are given the same reference numerals.
The digital telephone 101a further includes a PC activation monitoring unit 314 that determines whether or not the PC 107a is activated, and a PC port connection port unit 315 to which the USB cable described above is connected.

Next, processing of the digital telephone according to the third embodiment will be described. The main body of the following operation is the CPU 301.
FIG. 14 is a flowchart illustrating processing of the digital telephone according to the third embodiment.

Steps S41 to S45: The same operations as steps S11 to S15 in FIG. 8 are performed.
Next, with reference to the PC activation monitoring unit 314, it is determined whether power is supplied to the USB cable (step S46). When the power is not supplied to the USB cable (No in Step S46), the personal data browsing permission flag is set to “No” (Step S47). Thereafter, it is determined whether or not there is a browsing request (step S48). When there is no browsing request (No in step S48), the process proceeds to step S46 and the operation is continued. When there is a browsing request (Yes in step S48), the display unit 304 is instructed to display a browsing restriction screen (step S49). Thereafter, the process proceeds to step S46 to continue the operation.

  On the other hand, if power is supplied to the USB cable in step S46 (Yes in step S46), it is determined whether there is a browsing request (step S50). When there is no browsing request (No in step S50), the process proceeds to step S46 and the operation is continued. When there is a browsing request (Yes in step S50), the display unit 304 is instructed to display a browsing screen (step S51). Thereafter, the process proceeds to step S46 to continue the operation.

  According to the communication system of the third embodiment, the same effect as that of the communication system of the first embodiment can be obtained. According to the communication system of the third embodiment, personal data can be browsed only when a call is possible and power is supplied to the USB cable. Therefore, for example, if the PC 107a is connected only when browsing personal data, data leakage can be prevented more reliably. Further, since the call is secured, for example, maintenance management can be facilitated.

Next, a communication system according to a fourth embodiment will be described.
Hereinafter, the communication system according to the fourth embodiment will be described with a focus on differences from the third embodiment described above, and description of similar matters will be omitted.

  The communication system according to the fourth embodiment is a system that prevents leakage of personal data using PC-specific data. In the nonvolatile memory 312 of this embodiment, PC identification data for identifying the PC 107a is stored in advance. Although it does not specifically limit as PC identification data, For example, an IP address, a user ID, a MAC address etc. are mentioned.

The CPU 301 according to the present embodiment includes a PC identification data reception timer, and can count, for example, the time from when a call can be made.
In addition, the CPU 301 transmits a PC identification data transmission request command to the PC 107a via the USB cable after the call is ready.

Next, the PC identification data reception process of the digital telephone 101a (wireless digital telephone 104a) will be described.
FIG. 15 is a sequence diagram showing a PC identification data reception process of the digital telephone. As illustrated in FIG. 15, the PC 107 a includes an application execution unit that performs operations related to a PC identification data transmission request command and an OS (Operating System).

First, the CPU 301 of the digital telephone 101a transmits a PC identification data request command via the PC port connection port unit 315 (step SA1).
Next, the application execution unit of the PC 107a accesses the PC identification data storage area of the OS (Step SA2). Then, PC identification data is acquired (step SA3).

Next, the application execution unit transmits PC identification data to the digital telephone 101 (step SA4).
Thus, the digital telephone 101a can receive the PC identification data.

Next, processing of the digital telephone according to the fourth embodiment will be described. The main body of the following operation is the CPU 301.
FIG. 16 is a flowchart illustrating processing of the digital telephone according to the fourth embodiment.

Steps S61 to S65: The same operations as in steps S11 to S15 in FIG. 8 are performed.
Next, a PC identification data transmission request is transmitted to the PC 107a via the USB cable (step S66).

  Then, it is determined whether or not PC identification data is received from the PC 107a (step S67). If the PC identification data has not been received (No in step S67), it is determined whether or not the PC identification data reception timer (timer) has timed out (step S68). If the timer has not timed out (No in step S68), the process proceeds to step S67 and the operation is continued. If the timer has timed out (Yes in step S68), it is determined whether there is a browsing request (step S69). When there is no browsing request (No in step S69), the browsing request is waited. If there is a browsing request (Yes in step S69), the display unit 304 is instructed to display a browsing restriction screen (step S70). Thereafter, the process proceeds to step S69 and the operation is continued.

  On the other hand, when the PC identification data is received in step S67 (Yes in step S67), it is determined whether or not the received PC identification data matches the registered PC identification data (step S71). If they do not match (No in step S71), it is determined whether or not the PC 107a has been requested for retransmission of the PC identification data n times (predetermined times) (step S72). If the retransmission request has not been performed n times (No in step S72), a request for retransmission of the PC identification data is transmitted to the PC 107a via the USB cable, and then the process proceeds to step S67 to continue the operation. When the retransmission request is made n times (Yes in step S72), the process proceeds to step 67 and the operation is continued. On the other hand, if they match in step S71 (Yes in step S71), the personal data browsing permission flag is set to “permitted” (step S74). Thereafter, it is determined whether there is a browsing request (step S75). When there is no browsing request (No in step S75), the browsing request is waited. When there is a browsing request (Yes in step S75), the display unit 304 is instructed to display a browsing screen (step S76). Thereafter, the process proceeds to step S75, and the operation is continued.

  According to the communication system of the fourth embodiment, the same effect as that of the communication system of the third embodiment can be obtained. According to the communication system of the fourth embodiment, since personal data can be prevented from leaking at low cost by using PC identification data, the cost for security can be reduced.

  As mentioned above, although the communication apparatus and communication system of this invention were demonstrated based on embodiment of illustration, this invention is not limited to this, The structure of each part is arbitrary structures which have the same function. Can be substituted. Moreover, other arbitrary structures and processes may be added to the present invention.

Further, the present invention may be a combination of any two or more configurations (features) of the above-described embodiments.
The above processing functions can be realized by a computer. In that case, a program describing the processing contents of the functions that the digital telephone and the wireless digital telephone should have is provided. By executing the program on a computer, the above processing functions are realized on the computer. The program describing the processing contents can be recorded on a computer-readable recording medium. Examples of the computer-readable recording medium include a magnetic recording device, an optical disk, a magneto-optical recording medium, and a semiconductor memory. Examples of the magnetic recording device include a hard disk device (HDD), a flexible disk (FD), and a magnetic tape. Examples of the optical disc include a DVD (Digital Versatile Disc), a DVD-RAM (Random Access Memory), a CD-ROM (Compact Disc Read Only Memory), and a CD-R (Recordable) / RW (ReWritable). Examples of the magneto-optical recording medium include MO (Magneto-Optical disk).

  When distributing the program, for example, a portable recording medium such as a DVD or a CD-ROM in which the program is recorded is sold. It is also possible to store the program in a storage device of a server computer and transfer the program from the server computer to another computer via a network.

  A computer that executes a communication program stores, for example, a program recorded on a portable recording medium or a program transferred from a server computer in its own storage device. Then, the computer reads the program from its own storage device and executes processing according to the program. The computer can also read the program directly from the portable recording medium and execute processing according to the program. In addition, each time the program is transferred from the server computer, the computer can sequentially execute processing according to the received program.

(Supplementary note 1) In a communication device that stores protection data and becomes capable of making a call by connecting to an exchange,
A notification unit for notifying the user of the protected data;
A connection state determination unit for determining a connection state with the exchange;
A notification permission unit that permits the notification of the protection data of the notification unit only when a call is possible with the exchange;
A communication apparatus comprising:

  (Additional remark 2) It further has an operation part which receives operation from the user, and when the operation part receives the operation when it is not in the state where the telephone call is possible, the notification permission part is the protection data of the notification part. The communication apparatus according to claim 1, wherein the user is notified of rejection of the notification.

(Additional remark 3) It further has the flag storage part which stores the flag for the detection of the said connection state,
The connection state determination unit changes the flag according to the connection state, and the notification permission unit refers to the flag and permits the notification of the protection data of the notification unit. Communication device.

(Additional remark 4) It has further the starting judgment part which judges the presence or absence of the starting of the computer connected to the said communication apparatus,
The communication apparatus according to claim 1, wherein the notification permission unit permits the notification of the protection data of the notification unit only when the communication is possible and the computer is activated.

(Additional remark 5) It further has the identification protection data receiving part which receives the identification data which identify the said computer between computers, and the identification data storage part which stores the said identification protection data beforehand,
The notification permitting unit is only in the state where the call is possible and the identification data received by the identification data receiving unit matches the identification data stored in the identification data storage unit. The communication device according to appendix 1, wherein notification of the protection data is permitted.

(Supplementary Note 6) In a communication device that stores protection data and becomes capable of making a call by connecting to an exchange,
A notification unit for notifying the user of the protected data;
A receiving unit for receiving a notification restriction release code transmitted by the exchange after the call is enabled;
A notification permission unit that permits the notification of the protected data of the notification unit when the reception unit receives the notification restriction release code;
A communication apparatus comprising:

(Supplementary note 7) In a communication system used for data protection,
An exchange that transmits a notification restriction release code to the communication device after being able to talk to a specific communication device;
A protection data storage unit for storing protection data; a notification unit for notifying the user of the protection data; a reception unit for receiving the notification restriction release code; and when the reception unit receives the notification restriction release code, A communication device having a notification permission unit that permits notification of the protection data of the notification unit;
A communication system comprising:

It is a figure which shows the outline of this invention. It is a figure which shows the communication system of embodiment. It is a top view which shows a digital telephone. It is a figure which shows the functional block of a digital telephone. It is a figure which shows a personal data storage part. It is a figure which shows the other example of a personal data storage part. It is a figure which shows the content displayed on the monitor of a digital telephone by a browsing request. It is a flowchart which shows the process of a digital telephone. It is a sequence diagram explaining a setting registration process. It is a flowchart which shows the process of the digital telephone of 2nd Embodiment. It is a sequence diagram explaining a cancellation code. It is a figure which shows the communication system of 3rd Embodiment. It is a block diagram which shows the function of the digital telephone of 3rd Embodiment. It is a flowchart which shows the process of the digital telephone of 3rd Embodiment. It is a sequence diagram which shows the reception process of PC identification data of a digital telephone. It is a flowchart which shows the process of the digital telephone of 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Communication apparatus 2,102,102a Switch 3 Notification part 4 Protection data 5 Connection state judgment part 6 Notification permission part 101, 101a Digital telephone (communication apparatus)
103, 103a Base station 104, 104a Wireless digital telephone (communication device)
105a hub 106 public telephone network 106a network 304 display unit 305 operation unit 306 speech network unit 307 handset unit 308 network connection unit 309 power supply 310 AC adapter 311a warning sound control unit 311b warning sound generation unit 312 nonvolatile memory 312a, 312b personal data storage Section 313 Bus 314 PC activation monitoring section 315 Port section for PC port connection

Claims (2)

In a communication device that stores protection data and becomes capable of making a call by connecting to a specific exchange,
A notification unit for notifying the user of the protected data;
A receiving unit for receiving a notification restriction release code transmitted by the exchange after the call is enabled;
When the receiving unit receives the notification restriction release code, the notification unit permits the notification of the protection data, and when the receiving unit does not receive the notification restriction release code, a request for browsing protected data in the call-enabled state is received. A notification permission unit for restricting the browsing of the protected data regardless of presence or absence;
A communication apparatus comprising: In a communication system having a communication device that stores protection data and becomes capable of making a call by connecting to a specific exchange, and the exchange,
The communication device
A notification unit for notifying the user of the protected data;
A receiving unit for receiving a notification restriction release code transmitted by the exchange after the call is enabled;
When the receiving unit receives the notification restriction release code, the notification unit permits the notification of the protection data, and when the receiving unit does not receive the notification restriction release code, a request for browsing protected data in the call-enabled state is received . A notification permission unit for restricting the browsing of the protected data regardless of presence or absence;
A communication system comprising:

Images