JP2006203792A - Method for collecting and storing error information from mobile terminal, mobile terminal and station side error information collecting and storing device - Google Patents

Abstract

The present invention relates to a method for collecting and storing error information from a mobile terminal, and an error information collecting and storing device on the mobile terminal and station side. Are collected immediately and reliably so that the location of the communication failure and the cause of the failure can be identified easily and quickly.
When a call of a connection request from a mobile terminal 10 via a mobile communication network 20 is not normally connected or when it is disconnected abnormally after being connected once, the failure occurrence area at this time from the mobile terminal 10 Error information including a terminal identification code, service code, and error code is transmitted by one of a plurality of mobile communication networks 21 and 22 having different communication methods, and the error information is received by the error information storage device 30 on the station side. Then accumulate and aggregate by item. An alarm is transmitted to the service monitoring device 33 when the total value calculated for each item exceeds a prescribed threshold value.
[Selection] Figure 1

Description

  The present invention relates to a method for collecting and storing error information from a mobile terminal, a mobile terminal, and a station-side error information collecting and storing apparatus. With the spread of mobile phones in recent years, telecommunications carriers are required to improve service quality. Although technologies related to mobile terminals and communication methods are improving year by year, there are still rare cases where it is not possible to connect to the network of a telecommunications carrier.

  In such cases, telecommunications carriers need to be aware of the range of impact on the services they are providing and prevent deterioration in service quality through prompt failure announcements to subscribers and quick failure recovery. . For this purpose, it is necessary to quickly determine whether the cause of connection failure or communication disconnection is due to the failure of the mobile terminal or the failure of the equipment (base station, exchange, etc.) on the station side. The present invention relates to a technique for reliably collecting and storing error information from a mobile terminal when connection is impossible or when communication is interrupted.

  As a method for investigating the cause of mobile terminal connection failure or communication disconnection, telecommunications carriers can listen to the details of the situation at the time of failure from the subscriber, or send the mobile terminal to the manufacturer for investigation. Is common. Since it takes a lot of time and work to send a mobile terminal to the manufacturer for investigation, the operator of the telecommunications carrier inputs the error information left in the mobile terminal brought to the service center into the error information collection device. A method of analyzing the information accumulated in the error information collecting apparatus and estimating the cause of the failure is also employed.

  With regard to failure of connection failure or communication disconnection due to malfunction of equipment on the telecommunications carrier side (station side), the number of connection request calls and the number of connection completion calls are counted by the exchange, and the traffic information is monitored. However, it is possible to estimate the cause of the failure on the basis of this tendency, but the direct cause cannot be specified.

  As a prior art document related to the present invention, in order to quickly and accurately investigate the cause of abnormal disconnection of a radio link in mobile communication, mobile communication is performed when the radio link between the portable mobile device and the base station is abnormally disconnected. Abnormally disconnected call information is transmitted from the exchange to the abnormally disconnected call investigation device via the maintenance information management device, and the abnormally disconnected call investigation device determines whether or not the questionnaire investigation is necessary based on the reason for disconnection included in the abnormally disconnected call information. If the reason for disconnection is necessary, a questionnaire survey request email is sent to the mobile mobile device, and the mobile mobile device accesses the abnormal disconnect call survey device that is the access destination described in the survey survey request email, and the questionnaire form screen Information is received, questionnaire response content is entered and transmitted on the screen of the portable mobile device, and based on the questionnaire response content received by the abnormal disconnect call investigation device Performing the analysis of the identification and cause of the occurrence location of the normal cut "abnormal disconnection-cause analysis system in a mobile communication method, abnormal disconnection call survey device and program" is described in Patent Document 1 below.

Further, as another prior art document, a so-called dual terminal including a PDC communication processing unit that processes PDC communication and a W-CDMA communication processing unit that processes W-CDMA communication, the power consumption In the initial stage, the PDC communication processing unit is activated, the W-CDMA communication processing unit is deactivated, the PDC communication processing unit receives the activation request transmitted from the PDC base station, and this activation In response to the request, the W-CDMA communication processing unit is notified of the activation request, and the W-CDMA communication processing unit is activated in response to the activation request. “Mobile communication terminal, mobile communication system and communication method” is described below. Patent Document 2 of Japanese Patent Application Laid-Open No. HEI 11-11083.
JP 2004-242259 A JP 2003-169379 A

  In the conventional method of investigating the cause of connection failure or communication disconnection, the communication carrier cannot grasp the failure status of the mobile terminal unless there is a report from the subscriber. Moreover, even if there is a report from the subscriber, it takes a lot of time and work to input error information from the occurrence of a failure to the related equipment of the communication carrier through the service center.

  In addition, it is possible to know the tendency of communication failure occurrence at a specific time and a specific area from the traffic information of the exchange, but it is not possible to recognize a failure specific to a specific mobile terminal depending on the traffic information. Further, in the method of inputting and transmitting the questionnaire response content on the screen of the portable mobile device described in the above-mentioned Patent Document 1, specifying the location of the abnormal disconnection and analyzing the cause based on the transmission content, The user of the mobile terminal has to input the area information and the like where the error occurred, which is troublesome for the user.

  In the present invention, when the connection from the mobile terminal is impossible or when the communication is unintentionally disconnected during the connection, the mobile terminal user is not forced to input the failure area information etc. Error information is immediately and reliably collected by the device, and based on the error information, the operator can easily and quickly identify the location of the communication failure and identify the cause of the failure. The purpose is to help shorten connection time and improve connection quality.

  The method for collecting and storing error information from a mobile terminal according to the present invention is as follows: (1) When a call of a connection request from a mobile terminal via a mobile communication network is not normally connected or is abnormally disconnected after being connected, A step of transmitting error information including a failure occurrence area, a terminal identification code, a service code and an error code from a terminal by one of a plurality of mobile communication networks having different communication methods, and a plurality of communication methods having different communication methods The error information including the failure occurrence area, the terminal identification code, the service code, and the error code transmitted from the mobile terminal via any one of the mobile communication networks is stored in the error information storage device on the station side. A step of receiving and storing, and a step of counting error information stored in the error information storage device on the station side. Characterized in that it comprises Tsu and up, the.

  Further, (2) the mobile terminal includes a step of selecting one mobile communication network in accordance with a priority order from a plurality of mobile communication networks registered in advance.

  Also, the mobile terminal of the present invention (3) when the connection request call through the mobile communication network is not normally connected or when it is disconnected abnormally after being connected, the failure occurrence area at this time, the terminal identification Error information storage means for storing error information including a code, a service code and an error code in a storage device built in or connected to the mobile terminal, and error information stored by the error information storage means via the mobile communication network Error information transmitting means for transmitting to the station side error information storage device.

  In addition, (4) the error information transmitting means may be connected via a mobile communication network that is different from the mobile communication network that is not normally connected after the call is made or that is disconnected from the mobile communication network that is abnormally disconnected after being connected. The error information is transmitted.

  The station-side error information storage device includes (5) a failure occurrence area and a terminal identification code transmitted from a mobile terminal via any one of a plurality of mobile communication networks having different communication methods. And a storage device that receives and accumulates error information including a service code and an error code, and an aggregation device that aggregates the error information accumulated in the storage device.

  According to the present invention, by transmitting error information when a call from a mobile terminal cannot be connected or disconnected, via a mobile communication network having a communication method different from the communication method to be connected, The (station side) can immediately collect and store the error information generated at that time. By analyzing the collected error information, the communication carrier (station side) can grasp the tendency of the occurrence of the failure and greatly shorten the time until the failure is recovered.

  In addition, by collecting the accumulated error information for each item, the communication carrier can easily and quickly identify the location of the communication failure and elucidate the cause of the failure, and shorten the failure recovery time. . In addition, by deleting error information that satisfies a predetermined condition from error information that has been once stored, error information that has already been recovered can be deleted, and overflow due to insufficient capacity of the storage device that stores the error information can be prevented. be able to.

  Therefore, as in the past, when there is a communication failure, there is no need to wait for a report from the subscriber, the service can be resumed in a short period of time, and the service quality can be improved. In addition, while the failure occurs, the subscriber's service usage is affected, and the decrease in revenue and profit of the service usage fee during this period can be minimized.

  FIG. 1 is a diagram for explaining the operation of collecting and accumulating error information from a mobile terminal according to the present invention. In the figure, 10 is a mobile terminal, 11 is a storage device built in or connected to the mobile terminal 10, 20 is a communication carrier network according to communication method A, 21 is a communication carrier network according to communication method B, and 22 is communication method C. , A communication device network, 30 is an error information storage device, 31 is a storage device built in or connected to the error information storage device 30, 32 is a totaling device built in or connected to the error information storage device 30, and 33 is a communication carrier. This is a service monitoring device.

  Here, the communication method A, the communication method B, and the communication method C are different from each other, such as a PDC (Personal Digital Cellular) method, a CDMA (Code Division Multiple Access) method, and a PHS (Personal Handy phone System) method. Refers to mobile radio communication system.

  The mobile terminal 10 has a function of saving error information when connection is impossible or when communication is interrupted in the storage device 11 built in or connected to the mobile terminal 10, and a function of transmitting the saved error information to the error information storage device 30. A function of transmitting error information in a communication method selected from a plurality of mobile radio communication methods, a function of selecting a communication method in order from a plurality of communication methods when selecting the communication method, A function of counting the number of failed transmissions, and a function of stopping the transmission of error information when the number of failed transmissions of the error information reaches a specified number.

  The error information described above identifies the time of occurrence (time when the error occurred), the occurrence area (wireless area where the error occurred), the terminal identification code (manufacturer name, model name, production time, etc. of the mobile terminal where the error occurred) Code), service code (code for specifying the communication method or communication service that was being used or used when an error occurred), and error code (code for specifying the cause of the error) ).

  The storage device 11 built in or connected to the mobile terminal 10 has a function of storing error information when connection is impossible or communication is interrupted for a certain storage capacity. 10 has a function of accepting error information transmitted from the communication method A and securing a route to the error information storage device 30, and the communication carrier network 21 according to the communication method B includes error information transmitted from the mobile terminal 10. Is received by the communication method B and has a function to secure a route to the error information storage device 30, and the communication carrier network 22 by the communication method C receives the error information transmitted from the mobile terminal 10 by the communication method C, It has a function of securing a route to the error information storage device 30.

  The error information storage device 30 is stored in the storage device 31 and the function of receiving the error information transmitted from the mobile terminal 10 via the communication carrier network 20, 21 or 22 according to the communication method A, B or C. For each item of error information, whether or not a predetermined condition is satisfied, and when the condition is satisfied, a function for automatically deleting the corresponding error information and an error aggregated by the aggregation device 32 When it is determined that the number of times of reception of a specific item of information has reached a specified threshold value, a function of transmitting the item as alarm information to the service monitoring device 33 is provided.

  The above alarm information includes the occurrence time (time when the threshold was reached), item name (element of the error information item that reached the threshold), item value (value of the error information item that reached the threshold), number of cases (Error information item reception count).

  The storage device 31 has a function of storing the error information received by the error information storage device 30 for a certain storage capacity, and the counting device 32 totals the error information stored in the storage device 31 for each item, and totals the items. Each item of error information has a function to determine whether any item has reached a prescribed threshold value, and the service monitoring device 33 receives alarm information transmitted from the error information storage device 30 And has a function of displaying alarm information on a monitoring screen for business operators.

  In the error information collection of the present invention, the mobile terminal 10 requests connection to the telecommunications carrier network in a communication method (for example, communication method A) used for normal calls and communication, but fails in connection or during a call. When the connection is disconnected, the error information at this time is stored in the storage device 11 built in or connected to the mobile terminal 10.

  The mobile terminal 10 can transmit the error information stored in the storage device 11 by any communication method among a plurality of communication methods, and selects the communication method to be used according to the priority order. At this time, since there is a high possibility that a communication method (for example, communication method A) that has failed to be used cannot be used, error information is transmitted using a network based on another communication method (for example, communication method B).

  The error information storage device 30 stores the error information in the storage device 31 after receiving the error information from the mobile terminal 10. The tabulation device 32 tabulates the error information accumulated in the storage device 31 for each item, and when detecting an item that has reached a predetermined threshold set in advance for each item, alert information is sent to the service monitoring device 33. Send. The telecommunications carrier can know the tendency of the failure occurrence status at the time of monitoring the service.

  Next, the error information collection operation of the present invention will be described in order. The operation | movement which attached | subjected the code | symbol in the following parentheses respond | corresponds to the operation | movement position which attached | subjected the same code | symbol of FIG. First, when a communication failure occurs such that a subscriber fails to connect to the communication carrier network 20 using the communication method A using the mobile terminal 10 or is disconnected during the connection (1), the mobile terminal 10 stores data. The error information at this time is stored in the apparatus 11 (2).

  The mobile terminal 10 determines that connection with the network 20 by the communication method A is impossible, and selects and connects the network 21 by the communication method B (3). At this time, if the connection with the network 21 by the communication method B is impossible, the connection is made by the network 22 by the communication method C.

  In this way, connection is attempted until error information is transmitted in any of a plurality of communication methods registered in the mobile terminal 10. When the number of failed connections for transmitting error information reaches a specified number, transmission of error information is stopped, and a guidance to that effect is displayed on the display unit of the mobile terminal 10.

  When the mobile terminal 10 can be connected by a communication carrier network of a certain communication method (the network 21 by the communication method B in FIG. 1), the mobile terminal 10 transmits error information to the error information storage device 30 via this network. (4). The error information storage device 30 receives error information from the mobile terminal 10 (5), and stores this error information in the storage device 31 (6).

  At this time, if the error information storage device 30 searches for error information already stored in the storage device 31 and recognizes that the error information satisfies a specific condition set in advance, the storage device 31 In order to prevent overflow due to insufficient capacity, the corresponding error information is deleted from the storage device 31.

  The totaling device 32 totals the error information accumulated in the storage device 31 (7), and when the item that has reached the specified threshold value for a certain period is detected, the error information accumulating device 30 instructs the service monitoring device 33. Alarm information is transmitted (8). The service monitoring device 33 displays the alarm information received from the error information storage device 30 on the information terminal where the operator is performing the monitoring work (9). From the above operation, the communication carrier can grasp the state of occurrence of communication failure in real time.

A specific operation example of error information collection / accumulation according to the present invention will be described below. FIG. 2 shows an example of the operation of the present invention. This operation example is assumed to operate under the following conditions.
(Condition 1): The telecommunications carrier manages a network of communication systems such as a PDC system, a CDMA system, and a PHS system.
(Condition 2): The mobile terminal performs a call or communication using a normal PDC communication method.
(Condition 3): The mobile terminal can select one of the communication methods from the PDC method, the CDMA method, and the PHS method and transmit the error information.
(Condition 4): The error information storage device can receive error information from the mobile terminal 10 in any of the PDC, CDMA, and PHS communication methods.
(Condition 5): In the PDC system network, a facility failure has occurred at the base station installed in Yokohama B.
(Condition 6): The network of the communication system of the CDMA system and the PHS system is in a normal state.
(Condition 7): The subscriber is using a mobile terminal to connect to the PDC network from within the wireless area covered by the base station installed in Yokohama B.

  In the following description of the operation, the operation given the reference numeral in parentheses corresponds to the operation part given the same reference in FIG. The subscriber attempts to connect to the PDC network using the mobile terminal, but cannot connect because a failure has occurred in the base station in Yokohama B (1). The mobile terminal stores the error information at this time in a storage device in the terminal (2).

  Since the connection by the network by the PDC method has failed, the mobile terminal refers to the communication method table 2-1 and connects by the network by the CDMA method next to the PDC method (3). In a CDMA network, the network is normally connected, and error information is transmitted to the error information storage device via this network (4).

  The error information storage device receives the error information and stores the error information in the storage device in the device itself (5). The error information storage device totaled error information for each item, and as a result of the totalization, the number of cases that occurred in Yokohama B was 50 (6).

  The error information storage device refers to the threshold value table 2-2 and determines that the error occurring in Yokohama B has reached the threshold value 50 (7). The error information accumulating device notifies the service monitoring device as alarm information together with the information of 50 occurrences, which is the total number of occurrences, regarding errors that occurred in Yokohama B (8). The service monitoring apparatus receives the alarm information and displays that 50 communication failures have occurred in Yokohama B when the service is monitored (9).

  FIG. 3 shows a sequence chart of the operation example shown in FIG. As shown in the figure, when a failure occurs in the connection made by the mobile terminal 10 in the communication carrier network 20 of the communication method A (3-1), the error information is collected and accumulated in the storage device 11 (3-2). ), Selects the communication carrier network 21 of the communication method B, and makes an error information transmission request to the error information storage device 30 (3-3).

  In response to the error information transmission request, the error information storage device 30 returns an error information transmission response to the mobile terminal 10 (3-4). The mobile terminal 10 receives the error information transmission response and transmits the error information to the error information storage device 30 through the communication carrier network 21 of the communication method B (3-5). When receiving the error information, the error information storage device 30 returns an error information reception response to the mobile terminal 10 (3-6).

  The error information storage device 30 stores the received error information in the storage device 31 and determines whether the total value for each error information item exceeds the threshold value (3-7), and the total value exceeds the threshold value. (3-8), alarm information is transmitted to the service monitoring device 33 (3-9).

  FIG. 4 shows an operation flow of the mobile terminal in error information collection / accumulation according to the present invention. As shown in the figure, when a communication failure occurs in the communication method A, the error information is saved (4-1), it is determined whether the error information transmission setting is manual or automatic (4-2), and the setting is manual. In this case, it is determined whether an operation for transmitting error information has been performed by the subscriber (4-3). If an operation for transmitting error information has not been performed, the processing is terminated without transmitting anything.

  When the above setting is automatic or an operation for transmitting error information is performed, a communication method for transmitting error information is sequentially selected according to priority (4-4). It is determined whether or not the selected communication method is a communication method in which a failure has occurred (4-5). If the communication method has a failure, the process returns to step (4-4) and the next priority is given. Select the order communication method.

  If the selected communication method is not a communication method in which a failure has occurred, it is determined whether or not the number of transmissions of error information has reached a specified number (4-6). Returning to step (4-4), the next priority communication method is selected. If the number of transmissions has not reached the specified number, error information is transmitted (4-7).

  The error information transmission result is determined (4-8). If the transmission is unsuccessful, the error information transmission failure count is counted up (4-9), and the processing returns to the above step (4-6). Similar processing is repeated. If the error information has been successfully transmitted, the process ends.

  FIG. 5 shows a flow of alarm information transmission operation in the error information storage apparatus of the present invention. When receiving the error information from the mobile terminal, the error information storage device 30 stores the error information in the storage device 31 (5-1). The accumulated error information is tabulated for each item by the tabulating device 32 (5-2), each item of error information is sequentially selected (5-3), and whether or not there is an item that has reached the threshold value is determined. Determine (5-4).

  If there is an item that has reached the threshold value, alarm information is transmitted (5-5), and it is checked whether or not all items have been compared with the threshold value (5-6). If the check has not been completed, the process returns to step (5-3) to repeat the same process. If all items are checked, the process is terminated.

  FIG. 6 shows a flow of error information deletion operation in the error information storage apparatus of the present invention. The error information storage device 30 should sequentially select storage error information (6-1) as a periodic operation with a fixed period T, and the selected error information should be deleted, such as error information of a fault that has already been recovered. It is determined whether or not a deletion condition set externally as information is satisfied (6-2). If the deletion condition is satisfied, the error information is deleted (6-3).

  It is checked whether or not all error information has been checked against the deletion condition (6-4). If the check has not been completed for all error information, the process returns to step (6-1) and the same processing is performed. repeat. When the check is completed for all error information, the process is terminated.

(Supplementary note 1) When the call of the connection request from the mobile terminal via the mobile communication network is not normally connected or when the connection is abnormally disconnected after being connected once, the failure occurrence area at this time, the terminal identification code from the mobile terminal Transmitting error information including a service code and an error code by one of a plurality of mobile communication networks having different communication methods;
Error information including a failure occurrence area, a terminal identification code, a service code, and an error code transmitted from a mobile terminal via any one mobile communication network among a plurality of mobile communication networks with different communication methods Receiving and storing in the error information storage device;
Totaling error information stored in the station side error information storage device;
A method for collecting and storing error information from a mobile terminal.
(Additional remark 2) The said mobile terminal includes the step which selects one mobile communication network according to a priority order from several mobile communication networks registered previously, The error from the mobile terminal of Claim 1 characterized by the above-mentioned. Information collection and accumulation method.
(Supplementary note 3) In the error information accumulating device on the station side, the accumulated error information is aggregated for each item, and the service monitoring is performed when the aggregated value aggregated for each item exceeds a prescribed threshold value. Sending an alarm to the device;
The method for collecting and accumulating error information from the mobile terminal according to Supplementary Note 1, wherein the error information is collected and accumulated.
(Supplementary note 4) If the connection request call via the mobile communication network is not normally connected or if it is disconnected abnormally after being connected, the failure occurrence area, terminal identification code, service code and error code at this time will be displayed. Error information storage means for storing error information including a storage device incorporated in or connected to the mobile terminal;
Error information transmitting means for transmitting error information stored by the error information storage means to an error information storage device on the station side via a mobile communication network;
A mobile terminal comprising:
(Supplementary Note 5) The error information transmitting means is connected via a mobile communication network that is different from a mobile communication network that is not normally connected after making the call or a mobile communication network that is abnormally disconnected after being connected once. The mobile terminal according to appendix 4, wherein the error information is transmitted.
(Additional remark 6) The said error information transmission means selects the mobile communication network which transmits the said error information from several mobile communication networks from which a communication system differs according to the priority registered beforehand. 5. The mobile terminal according to 5.
(Supplementary Note 7) The error information transmission means tries to transmit the error information to one mobile communication network until the number of failure times of the error information transmission reaches a specified number of times, and the number of failure times of the error information transmission is specified. The mobile terminal according to appendix 6, wherein when the number of times is reached, another mobile communication network is selected and the error information is transmitted.
(Supplementary note 8) Error information including a failure occurrence area, a terminal identification code, a service code, and an error code transmitted from a mobile terminal via any one of a plurality of mobile communication networks with different communication methods A storage device for receiving and storing
A tally device for tallying error information accumulated in the storage device;
A station-side error information storage device characterized by comprising:
(Additional remark 9) The said totaling device totalizes the error information accumulate | stored in the said memory | storage device for every item containing generation | occurrence | production time, generation | occurrence | production area, a terminal identification code, a service code, and an error code, and any item is prescribed | regulated. 9. The station side error information collecting and accumulating device according to appendix 8, wherein alarm information is transmitted to the service monitoring device when the threshold value is reached.
(Supplementary Note 10) Means for determining whether or not the value of each item of error information accumulated in the storage device satisfies a specific condition set in advance, and error information satisfying the specific condition are stored in the storage device 9. The station side error information collecting and accumulating device according to appendix 8, characterized in that it comprises means for deleting from the station.

It is operation | movement explanatory drawing of the error information collection accumulation | storage from the mobile terminal by this invention. It is a figure which shows the specific operation example of the error information collection accumulation | storage of this invention. It is a sequence chart of an example of operation of error information collection accumulation of the present invention. It is a figure which shows the operation | movement flow of the mobile terminal of this invention. It is a flowchart of the alarm information transmission operation | movement in the error information storage device of this invention. It is a flowchart of the error information deletion operation | movement in the error information storage apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Mobile terminal 11 Storage device incorporated in or connected to mobile terminal 10 Communication carrier network by communication method A 21 Communication carrier network by communication method B 22 Communication carrier network by communication method C 30 Error information storage device 31 Error information Storage device built in or connected to storage device 30 32 Aggregation device built in or connected to error information storage device 30 33 Service monitoring device of communication carrier

Claims (5)

If the call of the connection request from the mobile terminal via the mobile communication network is not normally connected or if it is disconnected abnormally after being connected once, the failure occurrence area at this time, the terminal identification code, the service code, and Transmitting error information including an error code by one of a plurality of mobile communication networks having different communication methods;
Error information including a failure occurrence area, a terminal identification code, a service code, and an error code transmitted from a mobile terminal via any one mobile communication network among a plurality of mobile communication networks with different communication methods Receiving and storing in the error information storage device;
Totaling error information stored in the station side error information storage device;
A method for collecting and storing error information from a mobile terminal.   The method for collecting and accumulating error information from a mobile terminal according to claim 1, comprising the step of selecting one mobile communication network in accordance with a priority order from a plurality of mobile communication networks registered in advance in the mobile terminal. . If a call for a connection request via a mobile communication network is not normally connected, or if it is disconnected abnormally after being connected once, error information including the failure occurrence area, terminal identification code, service code and error code at this time is displayed. Error information storage means for storing in a storage device built in or connected to the mobile terminal;
Error information transmitting means for transmitting error information stored by the error information storage means to an error information storage device on the station side via a mobile communication network;
A mobile terminal comprising:   The error information transmitting means transmits the error information via a mobile communication network that is different from a mobile communication network that is not normally connected after the call or is disconnected after being connected. The mobile terminal according to claim 3, wherein the mobile terminal transmits. Receiving error information including a failure occurrence area, a terminal identification code, a service code, and an error code transmitted from a mobile terminal via any one of a plurality of mobile communication networks having different communication methods A storage device to store;
A tally device for tallying error information accumulated in the storage device;
A station side error information storage device characterized by comprising:

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