JP4810252B2 - Abnormality detection method and system for communication terminal device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a communication terminal apparatus abnormality detection method and system capable of quickly and easily confirming an operation abnormality of a communication terminal apparatus serving as a notification transmission source in a notification system constructed using a general-purpose telephone subscriber line. It is.

  As a conventional abnormality detection method of a communication terminal device, for example, Japanese Patent Laid-Open No. 2001-197152 (Patent Document 1) is disclosed as a server device, a communication system, and a control method thereof.

  According to Patent Document 1, in a communication system in which a communication terminal and a server device that manages the communication terminal are connected via a network, the server device automatically detects an abnormality of the communication terminal and responds to it. Further, the system has a function of notifying the user or administrator of the occurrence of an abnormality and its response. That is, the server device receives communication management data and the like from the communication terminal, analyzes the data, and determines whether or not there is an abnormality in the communication terminal. If an abnormality is detected, depending on the degree, the job for the communication terminal in which the abnormality is detected is substituted for another communication terminal, or processing such as limiting the functions that can be used on the communication terminal is automatically performed. To do. As a result of detecting an abnormality, it is also possible to notify the user or administrator of the content of the countermeasure as necessary.

  In this patent document, it is described that this server device receives and analyzes communication management data from a communication terminal and notifies the processing contents. However, there is no description of automatic processing in the case where, for example, these management data cannot be received due to a failure in the communication terminal itself or a connection line to the terminal.

  Here, for example, there is a facsimile apparatus disclosed in Japanese Patent Laid-Open No. 6-164753 (Patent Document 2). In this technique, when the connection destination is a communication terminal in the telephone network, it is detected that a ringing tone (RBT) for calling the communication terminal of the connection destination is not returned within a predetermined time from the call destination automatic exchange. Thereby, it can be determined that there is an abnormality between the connection destination communication terminal and the communication terminal.

  This facsimile apparatus measures the time from the start of calling or counts the reception of ringing sounds. If the measurement time or count value exceeds a predetermined value, the communication state on the receiving side is determined to be abnormal and the call is stopped.

  With this technology, it is possible to construct a monitoring system in which the calling communication terminal is used as a monitoring center and the call receiving communication terminal is provided with a communication terminal that is a caller. The monitoring center can detect an abnormality up to the communication network and communication terminal of the connection destination by using the time counting or counting of the ringing tone reception.

  However, in the telephone line network, the called destination automatic exchange uses the dialed number to confirm the destination communication terminal, sends a call signal (IR) to that terminal, and returns a ring tone to the caller's monitoring center. To do. In this case, the incoming call destination automatic exchange cannot detect an abnormality such as a power supply interruption or a failure of itself in the connection destination communication terminal. That is, it is impossible to detect even the abnormal operation of the connection destination communication terminal itself.

JP 2001-197152 A JP-A-6-164453

  The problem to be solved is that even if the monitoring center has a calling side communication terminal function that uses a telephone line network to receive a ringing tone from a call destination within a predetermined time and determines that the connection destination is normal, It is impossible to detect an abnormality such as a power supply interruption or failure in the connection destination communication terminal device, that is, the reporting terminal device itself.

  An object of the present invention is to use a telephone line network to call a communication terminal device from which a monitoring center is a call originator by dialing and detect an abnormality such as a power supply interruption or failure of the communication terminal device. The monitoring center has a calling side communication terminal function that receives a ringing tone from a called party within a predetermined time and determines that the connected party is normal.

  For this reason, the telephone line for which the caller ID notification service is contracted is subscribed to the telephone line network for calling after a predetermined procedure with the incoming communication terminal apparatus, and the telephone line connecting the communication terminal apparatus is added to the telephone line. Is contracted with a communication carrier for a caller ID notification service. The monitoring center device measures the time from when the call is made and the dial is transmitted until the return of the ringing tone is accepted. The time measurement value is compared with a preset time value, and the main feature is to determine whether the calling communication terminal device is normal or abnormal based on the result.

  As described above, since the communication carrier and the caller ID notification service are contracted to the telephone line connecting the communication terminal device, the telephone exchange includes a predetermined number including the caller ID notification when connecting the incoming communication terminal device. The called party is called after the information exchange operation has been performed normally. Due to the success of the caller ID notification process, the telephone exchange determines that the receiving operation of the incoming communication terminal device itself is normal. Therefore, when the time measurement value exceeds a predetermined set time value, the monitoring center device on the sender side can determine that the operation of the connection destination communication terminal device is abnormal. Incidentally, an abnormality in the telephone network up to the called automatic exchange can be determined by a busy tone (BT) received from the calling automatic exchange. Furthermore, since confirmation of normality / abnormality for the communication terminal device can be performed from the monitoring center device, the confirmation time can be freely selected by the user.

  The monitoring center device can record the measurement time when the calling sound is returned normally after calling and dialing, together with the due date, day of the week and time. Accordingly, it is preferable to select a plurality of set time values corresponding to each of a plurality of time zones from time measurement values that vary depending on the due date, day of the week, and time. For example, the detour connection is frequently made in the telephone line network at the most busy time when the call volume is large, for example, at the business start time on weekdays and Mondays. As described above, when it takes time to complete the communication path from the calling side to the called side, the time measurement value becomes large even if the connection destination communication terminal apparatus performs a normal processing operation in a short time. In order to take detailed measures against this, it is desirable to change the set time value of the time zone according to the amount of generated call. For this reason, according to the configuration described above, it is possible to set time values corresponding to fluctuations in the call volume in each time zone taking into account the days of the week and holidays, the busy hours and the quiet hours.

  In a specific aspect, the monitoring center device makes a call and calls the communication terminal device by dialing, means for detecting a ringing tone received from the telephone network as a result of the call, and dialing transmission Means for measuring a time from a call to a ringing tone detection to obtain a time measurement value, means for presetting and storing a time value from dialing transmission to ringing detection when the communication terminal device is normal, and time measurement Means for comparing the value with the set time value to determine normality / abnormality relating to the communication terminal device, and means for displaying the determination result. A communication terminal device contracts a communication carrier and a caller ID notification service for a telephone line connected to the line network, and executes a predetermined caller ID reception procedure when receiving a call from the telephone line network. I have. In addition, the exchange for connecting the communication terminal device via a telephone line network includes means for executing a predetermined caller ID notification service procedure and returning a ringing tone to the caller when calling the communication terminal device. Yes.

  It is preferable that the monitoring center device further includes means for storing a plurality of time measurement values in a normal state and means for calculating and obtaining the preset time value from the plurality of time measurement values. The monitoring center device further includes means for recording each of the plurality of time measurement values together with a due date, day of the week, and time, and a plurality of set times corresponding to each of a plurality of time zones from the time measurement value that varies depending on the due date, day of the week, and time. And means for obtaining the value.

  When the monitoring center device makes a call to the communication terminal device in order to determine normality / abnormality, it is desirable to disconnect the line that has been called when the determination is completed, and to perform the end call processing. As a result, when the communication terminal device only transmits information, not only is it possible to avoid invalid hold of the communication terminal device, but also there is no callee response, so communication charges can be avoided.

  In the communication terminal device abnormality detection method and system of the present invention, a communication company and a caller ID notification service are contracted to a telephone line connecting a communication terminal device that is a notification transmission source. For this reason, the calling side exchange executes the caller ID notification processing procedure of the connection destination communication terminal device after the monitoring center device makes a call and dials and accepts the return of the ringing tone. Therefore, when the measured time value is larger than the preset time value, the communication terminal device can be determined to be abnormal. As a result, according to the present invention, the monitoring center device has a calling side communication terminal function that receives a ringing tone from a call destination within a predetermined time using a telephone line network and determines that the connection destination is normal. There is an advantage that it is possible to detect an abnormality that prevents the control means from operating normally due to a power supply interruption or failure of a connection destination communication terminal device that is a remote notification source via the line network.

  Therefore, the communication terminal device that is the source of the notification does not require a special notification system that detects its own operation failure and notifies the monitoring center device. Even when the connection destination communication terminal apparatus responds, when the monitoring center apparatus detects the ringing tone and confirms normality / abnormality, the line disconnection termination process is performed before the connection destination communication terminal apparatus responds. Thereby, there is an advantage that there is no communication cost. Furthermore, it is possible to search for abnormalities by dialing subscriber numbers sequentially from a monitoring center device to a plurality of connection destination communication terminal devices. Therefore, it is possible to construct a monitoring system over a wide area.

  It is an object of the present invention to contract a caller number notification service with a communication carrier for a telephone line connecting a communication terminal device, until the monitoring center device calls and dials and accepts the return of the ringing tone. This is realized by comparing the measured time value with a preset time value to determine whether the calling communication terminal device is normal or abnormal.

  Hereinafter, the communication terminal device that is an abnormality detection target will be described by limiting to a reporting terminal device that has a monitoring instrument such as a camera or a sensor and has a communication terminal function for transmitting monitoring data to a monitoring center. However, this is for convenience of explanation, and the following explanation does not limit the present invention.

  A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a functional block diagram illustrating an embodiment of an abnormality detection system for a communication terminal device according to the present invention. As shown in the figure, this system includes a single monitoring center device 1, a plurality of notification terminal devices 2, and a single telephone line network 3 interconnecting them.

  In the present invention, a communication service provider of the telephone line network 3 and a caller ID notification service are contracted to a subscriber line connected to the telephone line network 3 by each reporting terminal device 2 provided in the present system.

  The monitoring center device 1 includes a communication terminal function, is connected to a plurality of notification terminal devices 2 via the telephone network 3, and receives notification of predetermined data information from each notification terminal device 2, for example, periodically. By doing so, predetermined monitoring is executed. As a function of the present invention, the monitoring center device 1 calls the connected notification terminal device 2 by dialing and detects an abnormality such as a power supply interruption or failure of the notification terminal device 2. The monitoring center device 1 includes a control unit 10, an operation input unit 11, a timer circuit 12, a memory 13, an information display unit 14, a dial number sending unit 15, and a ringing tone detection circuit 16.

  The notification terminal device 2 is a communication terminal device that is a notification transmission source, and transmits a predetermined notification to the monitoring center device 1 through the telephone line network 3 periodically, for example. When receiving the incoming call, the reporting terminal device 2 executes a predetermined procedure for receiving notification of the telephone line network 3 and the caller ID. Further, the reporting terminal device 2 receives a call from the monitoring center device 1 via the telephone line network 3 in order to receive an operation function test, but does not respond. However, when responding, it can respond after a predetermined time has elapsed. This predetermined time is set to a value capable of detecting an abnormality according to the present invention.

  The telephone line network 3 includes a center-side exchange 31 that accommodates the monitoring center apparatus 1 and a terminal-side exchange 32 that accommodates the notification terminal apparatus 2. In some cases, the center-side switch 31 and the terminal-side switch 32 are the same switch. Further, the communication path formed from the center side switch 31 to the terminal side switch 32 is not limited to the telephone line network 3 and may pass through a plurality of relay switches. In the terminal side switch 32 of the telephone line network 3, a caller number notification service with a communication carrier of the telephone line network 3 is subscribed to the subscriber line connected to the reporting terminal device 2. Accordingly, the terminal-side exchange 32 executes a predetermined processing procedure for notifying the caller ID to the reporting terminal device 2 that has received an incoming call.

  The control unit 10 is connected to each component of the monitoring center device 1 and performs control so that the function of the monitoring center device 1 is exhibited. Its main function is to compare the time measurement value TX obtained from the timer circuit 12 with the set time value TS stored in the memory 13 to determine normality / abnormality. The operation input unit 11 includes, for example, a keyboard and a button using a screen, and can input information and data by a user operation. The timer circuit 12 measures time and outputs a time measurement value TX, and the one used in the present invention measures the time from calling and dialing to receiving a ringing tone. .

  Under the control of the control unit 10, the memory 13 presets and stores a time value TS for determining normality / abnormality of the reporting terminal device 2 according to the present invention. The information display unit 14 receives the input information from the operation input unit 11, the control state information by the control unit 10, etc. under the control of the control unit 10, and displays the information on the screen, the lamp, the light emitting diode, etc. Audible display. Under the control of the control unit 10, the dial number sending unit 15 dials and transmits the connection destination subscriber number at the time of outgoing call to the center side switch 31. The ringing tone detection circuit 16 receives the control of the control unit 10, and after dialing transmission, detects the ringing tone (RBT) received from the center-side exchange 31 and notifies the control unit 10 of the ringing tone.

  Next, with reference to FIG. 2 together with FIG. 1, a case will be described in which the caller number display procedure on the called side ends normally.

  The monitoring center device 1 makes a call by setting a subscriber line to the telephone line network 3 to an off-hook state for an abnormality search of the notification terminal device 2. Next, the monitoring center device 1 transmits the subscriber number of the notification terminal device 2 from the dial number transmission circuit 15 to the telephone line network 3, and starts the time measurement of the timer circuit 12 (procedure S1). In the telephone line network 3, the calling side exchange detects the caller number, and call setting control is executed in the telephone line network 3 (step S2). The called exchange receives the caller ID notification to the notification terminal device 2. That is, the called exchange on the telephone line network 3 inverts the polarities of the telephone lines L1 and L2 to the reporting terminal device 2 and transmits an activation signal (CAR) to the communication terminal (step S3).

  The reporting terminal device 2 detects the polarity reversal of the telephone line and receives the activation signal (CAR) to accept the incoming call (step S4). In response to the incoming call, the reporting terminal device 2 forms a loop in the off-hook state of the telephone line and transmits a primary response signal to the called side exchange in the telephone line network 3 (step S5). In the telephone line network 3, the called-side exchange detects a loop of the telephone line and sends predetermined information including the caller number to the notification terminal device 2 (step S6). This predetermined information is a modem signal when the telephone line is such an analog line. Next, when the notification terminal device 2 detects the completion of information reception (step S7), the notification terminal device 2 disconnects the telephone line loop and puts it into an on-hook state, thereby transmitting a reception completion signal to the called side exchange of the telephone line network 3. (Procedure S8). The caller ID reception process in the reporting terminal device 2 is completed by the procedure so far.

  The called exchange on the telephone network 3 sends a call signal (IR) for ringing, for example, a bell to the notification terminal device 2 and sends a ring tone (RBT) to the caller (step S9).

  Therefore, in the monitoring center device 1, the ringing tone detection circuit 16 detects the ringing tone. With this ringing tone detection, the control unit 10 reads the measured time value T1 from the timer circuit 12 and compares it with the set time value TS of the memory 13. The control unit 10 detects “normal” when the measured time value T1 is less than the set time value TS, and outputs it to the information display unit 14 by, for example, visual display (step S10). At the same time, the control unit 10 controls the call termination process (step S11) for disconnecting the telephone line loop of the call to the center-side switch 31 to release the line and setting the on-hook state.

  In the reporting terminal device 2, the required time T0 from the receipt of the incoming call in step S4 to the transmission of the reception completion signal in step S8 is usually within 4 seconds. Accordingly, for example, 6 seconds can be set as the set time value TS.

  Next, referring to FIG. 3 together with FIG. 1, a case will be described in which the calling party number display procedure on the called side is timed out by the called side exchange of the telephone network 3 due to an abnormal operation.

  The monitoring center device 1 makes a call by setting a subscriber line to the telephone line network 3 to an off-hook state for an abnormality search of the notification terminal device 2. Next, the monitoring center device 1 transmits the subscriber number of the notification terminal device 2 from the dial number transmission circuit 15 to the telephone line network 3 and starts measuring the time of the timer circuit 12 (step S21). In the telephone line network 3, the calling side exchange detects the caller number, and call setting control (step S22) is executed in the telephone line network 3. The called exchange receives the caller ID notification to the notification terminal device 2. That is, the called exchange on the telephone line network 3 inverts the polarities of the telephone lines L1 and L2 to the reporting terminal device 2 and transmits an activation signal (CAR) to the communication terminal. At the same time, the called exchange starts measurement of the timer time period T2 (step S23). For example, 6 seconds longer than the time value T0 of 4 seconds is set in the timer time limit T2.

  Normally, in the case of an abnormality in the reporting terminal device 2, the reception completion signal cannot be received within 4 seconds, and reaches 6 seconds of the timer time limit T2. At this time, the called exchange on the telephone network 3 sends a call signal (IR) to the notification terminal device 2 so as to allow communication between users for the time being, and a ringing tone (RBT) is sent to the calling side. Is sent out (step S24).

  Therefore, in the monitoring center device 1, the ringing tone detection circuit 16 detects the ringing tone, and the control unit 10 reads the measured time value T3 from the timer circuit 12, and the measured time value T3 is compared with the set time value TS of the memory 13. Is done. The controller 10 detects “abnormal” because the measured time value T3 is equal to or greater than the set time value TS. When the abnormality is detected, for example, an audible display is output to the information display unit 14 in addition to the visible display (step S25), and the user is warned. At the same time, the control unit 10 controls the call termination process (procedure S26) in which the telephone line loop of the call to the center-side exchange 31 is disconnected and the line is released to set the on-hook state.

  The set time value TS is preferably 6 seconds, which is equivalent to the timer time limit T2 of the called exchange, in consideration of the minimum required time from step S22 to step S23. In the description with reference to FIG. 2, 6 seconds are set.

  Next, the main operation procedure of the monitoring center apparatus 1 will be described with reference to FIG.

  When the control unit 10 receives an off-hook operation by the user from the operation input unit 11 for an abnormality search of the notification terminal device 2, the control unit 10 makes a call by placing the subscriber line in an off-hook state. At this time, the control unit 10 transmits the subscriber number of the notification terminal device 2 designated from the operation input unit 11 by the user's operation from the dial number transmission circuit 15 to the telephone line network 3 (step S31). At the same time, the control unit 10 initializes the timer circuit 12 and an overall time measurement timer (not shown) and starts time measurement (step S32). The ringing tone detection circuit 16 waits for detection of a ringing tone received from the telephone line network 3 (YES in step S33).

  When the procedure S33 is “YES” and the ringing tone detection circuit 16 detects the ringing tone, the control unit 10 stops measuring the timer circuit 12 and reads the measured time value TX (procedure S34). The measured time value TX is compared with the set time value TS in the memory 13. As a result, when the measured time value TX is within the range of the set time value TS (YES in step S35), it is confirmed that “dial destination notifying terminal device 2 is normal”. Therefore, the “normal” is displayed visually, for example, on the information display unit 14 (step S36). At the same time, the control unit 10 performs a call termination process (procedure S37) for disconnecting the telephone line loop of the call to the center-side exchange 31 to release the line and setting the on-hook state.

  When the above step S35 is “NO” and the measured time value TX is outside the set time value TS, the control unit 10 confirms that “the dial destination report terminal device 2 is abnormal”. This “abnormality” is output to the information display unit 14 by, for example, an audible display in addition to a visual display (step S38), and the procedure proceeds to the above step S37.

  When the above step S33 is “NO” and no ringing tone is detected, the overall time measurement timer reaches the overall monitoring time limit (YES in step S40). In this case, the control unit 10 confirms “connection destination failure including congestion of the telephone line network 3” and outputs an alarm by audible display (step S31) in addition to the visual display on the information display unit 14, for example. Proceed to step S37.

  Since such a configuration is adopted, the telephone exchange calls the called party after normally performing the operation of exchanging predetermined information including the caller ID notification when connecting the reporting terminal device to be called. Therefore, if this process is abnormal, the abnormality is detected by the long time period T2 set in the called exchange, and then the called party is called. Therefore, the monitoring center device on the caller side can easily determine that the connection destination notification terminal device is abnormal when the time measurement value exceeds a predetermined set time value. Furthermore, since confirmation of normality / abnormality for the notification terminal device can be performed from the monitoring center device, the confirmation time can be freely selected by the user.

  In the above description, the operation is only for one reporting terminal device, but it is possible to automatically make a call to a plurality of reporting terminal devices and make a dialing call to a connected terminal device by utilizing a known technology. . As a result, the abnormality detection of the reporting terminal device can be processed collectively for the entire system. As a result, the dial numbers of the abnormality detection reporting terminal devices can be displayed so that the monitoring center can efficiently cope with them at a time, which has the effect of reducing maintenance operation costs.

  However, the required time from the procedure S2 to the procedure S3 or from the procedure S22 to the procedure S23 is the minimum required time when the monitoring center device 1 and the notification terminal device 2 are accommodated in the same exchange. At the most busy time, there is a detour relay and it goes through a plurality of exchanges, so more time is required. In such a state, comparison with one set time value TS as in the above-described embodiment may cause a decrease in determination accuracy. The present embodiment improves this.

  A second embodiment of the present invention will be described with reference to FIGS. 5 and 6 and FIG. In the drawing, the monitoring center apparatus 1A shown in FIG. 5 is applied instead of the monitoring center apparatus 1 of FIG.

  FIG. 5 is an explanatory diagram showing, in functional blocks, an embodiment of a monitoring center apparatus different from FIG. 1 according to the present invention. The monitoring center apparatus 1A shown in the figure has the same main functions as those of the above-described embodiments, and the same constituent elements are assigned the same reference numerals and description thereof is omitted.

  As shown in the figure, the monitoring center apparatus 1A includes a control unit 10A, an operation input unit 11, a timer circuit 12, a measurement time memory 13A, a measurement determination time value memory 13B, an information display unit 14, and a dial number as functions of the present invention. A sending circuit 15, a ringing tone detection circuit 16, and a calendar clock circuit 17 are provided. What is different from the above embodiment is a control unit 10A, a measurement time memory 13A, a measurement determination time value memory 13B, and a calendar clock circuit 17.

  Details of the control unit 10A will be described later with reference to a flowchart. The measurement time memory 13A sequentially stores the measurement value T1 in FIG. 2 or the measurement value TX in FIG. 4 and the clock data obtained from the calendar clock circuit 17 at the time of measurement, and stores a predetermined number. For example, the measurement determination time value memory 13B records in advance time values TB and TE set as determination conditions corresponding to the time periods when the call is busy and busy. The measurement determination time value memory 13B is not limited to the time values TB and TE, and a plurality of time zones corresponding to the call volume are set. The clock data output from the calendar clock circuit 17 includes the date of the calendar date and an accurate time, for example, every second.

  The features of the present embodiment by the control unit 10A are as follows. First, the control unit 10A sequentially stores the measured value T1 or TX when the reporting terminal device 2 is dialed and the clock data obtained from the calendar clock circuit 17 in the measured time memory 13A, and stores a predetermined number. Next, the control unit 10A organizes and calculates the relationship between the measured value T1 or TX and the clock data, and determines, for example, appropriate determination conditions as the set time values TB and TE in the busy and quiet periods of the call. The determined set time value appropriately updates the time value stored in the measurement determination time value memory 13B. Therefore, the control unit 10A selects a set time value based on the measured time zone when determining the measured value by the time value.

  Next, the main operation procedure of the monitoring center apparatus 1A will be described with reference to FIG. The procedure from the procedure S31 to the procedure S33 and the procedure after the procedure S35 are the same as the main operation procedure of the monitoring center apparatus 1 shown in FIG. Accordingly, the same reference numerals are given and description thereof is omitted. That is, FIG. 6 is different from FIG. 4 in step S34.

  When the above step S33 is “YES” and the ringing tone detection circuit 16 detects the ringing tone, the control unit 10A stops measuring the timer circuit 12, stops the measurement time value TX, and the clock of the calendar clock circuit 17 Read data and. Both of them are sequentially stored in the measurement time memory 13A (step S51). When the predetermined storage area in the measurement time memory 13A is full, the oldest data is deleted and updated to the latest data.

  On the other hand, the control unit 10A selects a measurement time zone from the clock data at the time of measurement (procedure S52), and determines the determination time value TS from the measurement judgment time value memory 13B according to the selected measurement time zone, for example, at the most busy time. The time value TB is extracted (step S53). Next, the control unit 10A proceeds to the procedure S35, and compares the measured time value TX with the set time value TS of the memory 13 to determine “normal / abnormal dial destination notification terminal device”.

  Furthermore, the control unit 10A automatically searches for information data in the measurement time memory 13A, for example, and automatically calculates the relationship between the time data and the measurement time value. Based on the calculation result, the determination time values TB and TE in the measurement determination time value memory 13B are updated. In addition, the setting of the time zone and the determination time value can be updated by the user.

  According to the present embodiment, since the time required from the procedure S2 to the procedure S3 or from the procedure S22 to the procedure S23 varies greatly depending on the time zone, the determination time value TS cannot be fixed to one minimum value of 6 seconds. The point can be solved.

  The present invention relates to a notification that a communication company and a caller ID notification service are contracted on a telephone line of a notification terminal device connected to a telephone line network, and a called party exchange is connected to a subscriber line on the telephone line network. A function of sending a ringing tone after confirming normal operation of caller ID notification to the terminal device is used. According to the configuration, the operation of the target notification terminal device can be easily confirmed from the transmission side device. Therefore, the present invention can be applied to applications that require confirmation of the operation of the communication terminal device by remote control, for example, a system that manages and monitors a plurality of communication terminals connected to a telephone network.

It is explanatory drawing which showed one Embodiment in the abnormality detection system of a notification terminal device with the block. Example 1 In FIG. 1, it is explanatory drawing which showed one Embodiment of the main procedure which detects "normal" of a report terminal device with the sequence chart. Example 1 In FIG. 1, it is explanatory drawing which showed one Embodiment of the main procedure which detects "abnormality" of a report terminal device with the sequence chart. Example 1 It is explanatory drawing which showed one Embodiment of the main procedure of the monitoring center apparatus in FIG. 1 with the flowchart. Example 1 It is explanatory drawing which showed one Embodiment different from FIG. 1 in the monitoring center apparatus with the block. (Example 2) It is explanatory drawing which showed one Embodiment of the main procedure of the monitoring center apparatus in FIG. 5 with the flowchart. (Example 2)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Monitoring center apparatus 2 Reporting terminal apparatus 3 Telephone network 10, 10A Control part 11 Operation input part 12 Timer circuit 13 Memory 13A Measurement time memory 13B Measurement judgment time value memory 14 Information display part 15 Dial number sending circuit 16 Ringing tone detection circuit 17 Calendar clock circuit

Claims (8)

  In a method of detecting an abnormality of a communication terminal device that detects an abnormality of the communication terminal device by calling a report source communication terminal device from a monitoring center device having a communication terminal function via a telephone line network, a contract is made for a caller ID notification service. Subscribe to a telephone line network that calls after a predetermined procedure with a communication terminal apparatus that receives an incoming call on a telephone line, and contracts a communication carrier and a caller ID notification service to the telephone line that connects the communication terminal apparatus, The communication terminal device that calls the communication center device by measuring the time from when the monitoring center device makes a call and dialing and accepts the return of the ringing tone, and compares the time measurement value with a preset time value A method for detecting an abnormality in a communication terminal device, comprising: determining normality / abnormality in   The abnormality detection method for a communication terminal device according to claim 1, wherein when the time measurement value is within the set time value, the called communication terminal device is determined to be normal. Method.   The abnormality detection method for a communication terminal device according to claim 1 or 2, wherein the time measurement value at which the ringing tone is normally returned after the monitoring center device calls and dials is transmitted together with the due date, day of the week and time. An abnormality detection method for a communication terminal device, comprising: recording and setting a plurality of time values corresponding to each of a plurality of time zones from the measured time values that vary according to a date, day of the week, and time, for the determination.   4. The abnormality detection method for a communication terminal device according to claim 1, wherein the communication terminal device is a reporting terminal device that only transmits information, and a monitoring center device is the reporting terminal device. A method for detecting an abnormality in a communication terminal device, comprising: when a call is made to determine whether the call is normal / abnormal, the line that has been called is disconnected at the end of the determination and the call is terminated. In an abnormality detection system for a communication terminal device that detects an abnormality of the communication terminal device by calling a communication terminal device of a report originator via a telephone line network from a monitoring center device having a communication terminal function,
The monitoring center device is a means for calling and calling the communication terminal device by dialing transmission, a means for detecting a ringing tone received from the telephone line network as a result of the calling, and a ringing tone detection from dialing transmission Means for measuring the time until the time measurement value is obtained, means for presetting and storing a time value from dialing transmission when the communication terminal device is normal to ringing tone detection, and the time measurement value and setting Means for comparing the time value to determine normality / abnormality relating to the communication terminal device, and means for displaying the determination result,
The communication terminal device is contracted with a communication carrier and a caller ID notification service for a telephone line connected to the telephone line network, and executes a predetermined caller ID reception procedure when a call is received from the line network. And means for
The exchange for connecting the communication terminal device in the line network includes means for executing a predetermined caller ID notification service procedure and returning a ringing tone to the caller when calling the communication terminal device. An abnormality detection system for a communication terminal device.   6. The abnormality detection system for a communication terminal device according to claim 5, wherein the monitoring center device further stores means for storing a plurality of time measurement values obtained at normal time, and sets the preset time values to the plurality of times. An abnormality detection system for a communication terminal device, comprising: means for calculating and obtaining from a measurement value.   7. The abnormality detection system for a communication terminal device according to claim 6, wherein the monitoring center device further includes means for recording each of the plurality of time measurement values together with a due date, a day of the week, and a time, and a time that varies depending on the due date, the day of the week, and the time. An abnormality detection system for a communication terminal device, comprising: means for obtaining a plurality of set time values corresponding to each of a plurality of time zones from a measured value. The abnormality detection system for a communication terminal device according to any one of claims 5 to 7, wherein the communication terminal device is a notification terminal device that only transmits predetermined information, and the monitoring center device is An abnormality detection of a communication terminal device, comprising means for disconnecting the calling line at the end of the determination when calling to the reporting terminal device to determine normality / abnormality system.

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