JP5664458B2 - Wireless terminal - Google Patents

Description

  The present invention relates to a wireless terminal capable of making an emergency call.

  In recent years, with the spread of wireless terminals such as mobile phones, emergency calls from mobile phones to the police and firefighting are increasing, and for connecting such emergency calls (110, 119, etc.) to the reception desk New mechanisms are being considered.

  As a technique for connecting an emergency call to a receiving stand, for example, a technique for automatically reconnecting an interrupted emergency call is disclosed in Patent Document 1 below. Specifically, when the call line between the mobile phone and the reception stand that is making an emergency call due to some kind of wireless line failure is interrupted, the switching center device is connected to the call line on both sides of the call. Before recognizing the disconnection, this state is recognized, and processing for reconnecting the telephone line is executed. With this technology, if the on-hook side is not on-hook, it is possible to reconnect an emergency call by a reconnection request from the exchange station device to the mobile phone.

  In addition, as a technology for connecting an emergency call to a reception desk, if the call is disconnected during an emergency call by an operation by a mobile phone user or moving out of service area, and if the area is crossed in these states, A technique that enables reconnection of an emergency call by calling back to a telephone is disclosed in Patent Document 2 below. This patent document discloses that no reconnection operation is required by the mobile phone user and the receiving stand operator.

JP 2002-10356 A Japanese Patent Laid-Open No. 9-247748

  For example, an operator of an emergency call receiving table collects necessary information through conversation with a user of a mobile phone as a reporter, thereby grasping the content of the report and determining a response to the report.

  However, in the above conventional technology, when a mobile phone is out of service area during an emergency call, the communication line is disconnected, and the return from out of service area is outside the jurisdiction of the receiving stand (exiting the prefectural border tunnel). In other cases, the emergency call cannot be reconnected. Specifically, when a call line is disconnected, the reception desk side goes on-hook, and when the caller's mobile phone returns from outside the service area in an area outside the jurisdiction of the reception desk, the caller's mobile phone is initially accepted. The emergency call cannot be reconnected to the platform. For example, when a user makes an emergency call (110, 119, etc.) using a mobile phone that has returned from outside the area in another prefecture through the above-mentioned prefectural border tunnel, the mobile phone will return. It is connected to the receiving table of other prefectures later and is not connected to the receiving table at the beginning. Therefore, at the reception stand in other prefectures after the return, the content of the report has not been taken over, so the situation cannot be grasped, and it is necessary to have the reporter explain it again, and the response to the report may be delayed. .

  The disclosed technology has been made in view of the above, and in the case where the telephone line is disconnected due to the wireless terminal being out of service area during an emergency call, and the return from out of service area is outside the jurisdiction of the receiving stand. Even if it exists, it aims at providing the radio | wireless terminal which enables reconnection of the emergency call with an initial receiving stand.

  The wireless terminal disclosed in the present application changes a call state stored in the storage unit to an emergency mode call state when an emergency call is made, and the call state is an emergency mode call state. A terminal control unit that changes the call state to an emergency mode reconnection state when a certain terminal moves out of the wireless area and then moves into the wireless area again, and the call state according to reception of the mail. A mail control unit that determines whether or not is in an emergency mode call state, and extracts a terminal identifier included in the mail and stores it in the storage unit when it is in an emergency mode call state, The terminal control unit makes a call specifying the terminal identifier in response to the call state being changed to the emergency mode reconnection state.

  According to one aspect of the wireless terminal disclosed in the present application, when the wireless terminal goes out of service area during an emergency call, the call line is disconnected, and the return from out of service area is outside the jurisdiction of the initial receiving stand. This also has the effect of making it possible to reconnect the emergency call to the initial receiving stand.

FIG. 1 is a diagram illustrating a hardware configuration example of a mobile phone. FIG. 2 is a diagram illustrating a functional block configuration example of the mobile phone. FIG. 3 is a diagram illustrating a hardware configuration example of a call center. FIG. 4 is a diagram illustrating an example of a wireless communication system. FIG. 5 is a diagram showing the exchange between the mobile phone and the receiving table when the 110th report is made. FIG. 6 is a diagram illustrating an example of connection destination information. FIG. 7 is a sequence diagram showing the internal operation of the mobile phone when a mail is received. FIG. 8 is a diagram illustrating state transition of the mobile phone. FIG. 9 is a sequence diagram showing the internal operation of the mobile phone in the emergency mode. FIG. 10 is a diagram illustrating an operation example of a conventional wireless communication system. FIG. 11 is a diagram illustrating an operation example of the wireless communication system in the embodiment.

  Embodiments of a wireless terminal disclosed in the present application will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

  FIG. 1 is a diagram illustrating a hardware configuration example of a mobile phone which is a wireless terminal according to the present embodiment. In FIG. 1, the mobile phone of this embodiment includes a processor 1, a memory 2, an operation unit 3, a display unit 4, a camera unit 5, a microphone 6, a speaker 7 (including earphones), an antenna 8, a wireless communication unit 9, and a voice. An input / output unit 10 is provided.

  The memory 2 includes a ROM (Read Only Memory) 2-1 for storing data for executing various functions of the mobile phone, and a RAM (Random Access Memory) 2-2 for storing various programs for executing various functions. And have.

  The processor 1 is an arithmetic processing unit such as a CPU (Central Processing Unit) that executes various programs stored in the ROM 2-1 or the RAM 2-2. The processor 1 controls the operation unit 3, the display unit 4, the camera unit 5, the wireless communication unit 9, and the voice input / output unit 10 by executing various programs stored in the ROM 2-1 or the RAM 2-2. . The program executed by the processor 1 is not only stored in the ROM 2-1 or the RAM 2-2, but is also recorded in a storage medium that can be distributed such as a CD (Compact Disc) -ROM or a memory medium. Can be read and executed. In addition, the program is stored in a server connected via a network so that the program can be operated on the server, and the mobile phone that requested the service in response to a request from a mobile phone connected via the network. It can also be provided to the telephone.

  The operation unit 3 is a user operation unit such as a numeric keypad or operation buttons. The display unit 4 is a display such as an LCD. The display unit 4 is also provided with an operation unit 3 such as a touch panel that accepts input of various user operations as well as a function of displaying various information such as characters and images. The camera unit 5 has a digital camera function and a video function. The wireless communication unit 9 performs wireless communication of various data such as voice and characters via the antenna 8. The voice input / output unit 10 is an input / output interface that inputs voice through the microphone 6 and outputs voice through the speaker 7.

  FIG. 2 is a diagram illustrating a functional block configuration example of the mobile phone. The mobile phone according to the present embodiment establishes a telephone line with the receiving table by making an emergency call (110 or 119) to the police or fire department. The reception stand is a telephone in a call center that accepts an emergency call. In the call center, a normal telephone function can be used by the reception stand, and processing such as mail transmission / reception can be performed using a personal computer connected to the Internet.

  In addition, the mobile phone according to the present embodiment includes a transmission / reception control unit 11, a terminal control unit 12, a voice control unit 13, and a mail control unit as functional blocks realized by the processor 1 reading various programs from the memory 2 and executing them. 14, area restoration control unit 15, data communication control unit 16, operation control unit 17, display control unit 18, camera control unit 19, and recording control unit 20.

  The transmission / reception control unit 11 transmits and receives radio signals via the antenna 8. The voice control unit 13 executes voice output processing to the speaker 7 and voice input processing from the microphone 6. The mail control unit 14 has a normal mail transmission / reception function. Furthermore, at the time of emergency call communication, the mail control unit 14 analyzes the mail from the call center, extracts connection destination information that is information for connecting to the receiving board, and notifies the terminal control unit 12 of the connection destination information. . The area restoration control unit 15 determines whether the mobile phone is out of service area / service area based on the radio signal received via the antenna 8 and the transmission / reception control unit 11, and notifies the terminal control unit 12 to that effect. The terminal control unit 12 controls the overall operation of the mobile phone and reads / writes various information to / from the memory 2. The terminal control unit 12 reconnects the emergency call to the original receiving table based on the connection destination information notified from the mail control unit 14 when the emergency call is disconnected from outside the service area and then restored to the service area. . The data communication control unit 16 has a data communication function such as an IP protocol, and transfers the mail received via the transmission / reception control unit 11 to the mail control unit 14.

  The operation control unit 17 notifies the terminal control unit 12 of key press information from the operation unit 3 as an event. The display control unit 18 controls display on the display unit 4. The camera control unit 19 controls the camera unit 5 and stores captured image and video information in the memory 2. The recording control unit 20 controls the voice control unit 13 and stores the voice data in the memory 2.

  Further, in the memory 2, in addition to connection destination information that is information for connecting to the receiving table, image and video information, audio data, transmission source identification information for authenticating received mail, call state information, and the like Is saved. When the mail control unit 14 receives mail from the call center, the mail control unit 14 performs mail authentication using the sender identification information such as a public key to prevent spoofing of the mail sender. In addition, the call status information is “emergency mode call status” which is information indicating that a call is being made to the receiving board in emergency mode (during emergency call communication), and information indicating that the phone is operating in normal mode. “Normal mode call state” or the like is recorded.

  Note that the functional block configuration example of the mobile phone described above enumerates the configuration related to the processing of this embodiment for convenience of explanation, and does not represent all the functions of the mobile phone.

  FIG. 3 shows a hardware configuration example of the call center. 3, the call center according to the present embodiment includes a receiving table 21, computers 22-1, 22-2,. The reception table 21 includes a private branch exchange 25 and telephones 26-1, 26-2, ..., 26-n. In addition to the emergency call numbers (110, 119, etc.), it is assumed that a unique telephone number is assigned to each telephone set on the reception board 21. For example, the private branch exchange 25 of the reception table 21 stores a correspondence table between telephones and telephone numbers. When there is an incoming call addressed to a specific telephone number, sorting is performed based on this correspondence table.

  Next, the operation of the wireless communication system including the mobile phone of this embodiment will be described in detail with reference to the drawings. Hereinafter, in the present embodiment, a case where a user of a mobile phone makes a 110th report to the police will be described as an example of an emergency call. It should be noted that the 119 call to the fire and ambulance and other emergency calls are similarly operated.

  FIG. 4 is a diagram illustrating an example of a wireless communication system according to the present embodiment. 4, the wireless communication system of the present embodiment accommodates the mobile phone 31 that is the mobile phone shown in FIGS. 1 and 2 and the mobile phone 31 in the reception area 34 within the 110th area of the F prefectural police. And the F prefectural police receiving bases 33-1 to 33-n which are the receiving bases 21 in the call center shown in FIG. Further, the wireless communication system of the present embodiment has a wireless base station 42 and a reception base 43 of the S prefectural police, which is the reception base 21 in the call center shown in FIG. And have. In addition to the reception area 34 and the reception area 44, the wireless communication system of the present embodiment includes an out-of-service area 51 such as a tunnel that is the 110th out-of-service area between the areas.

  In the wireless communication system configured as described above, the F prefectural police reception bases 33-1 to 33-n perform processing for the 110th notification in the F prefecture, and the S prefectural police reception base 43 is the 110th in the S prefecture. Process the notification. It is assumed that a unique telephone number is assigned to each of the telephones in the receiving tables 33-1 to 33-n and the receiving table 43. In addition, there may be a plurality of S prefectural police reception desks.

  Hereinafter, in the present embodiment, a reporter who is in the reception area 34 makes a 110th report using the mobile phone 31, and the mobile phone 31 receives a reception table that has jurisdiction over the prefecture F via the radio base station 32. The case of connecting to 33-1 is taken as an example.

  First, as an operation of the wireless communication system of the present embodiment, an operation when the mobile phone 31 connects an emergency call to the reception board 33-1 will be described. FIG. 5 is a diagram showing the exchange between the mobile phone and the receiving table when the 110th report is made. In this embodiment, as an example, e-mail is used for delivery of connection destination information. In the initial state, it is assumed that “normal mode call state” is recorded in the memory 2 of the mobile phone 31 as call state information.

  In this state, when the caller's mobile phone 31 makes a call 110, and the reception desk 33-1 in the call center receives the call (S1), the operator in the call center calls the caller from the caller telephone number. Specify the email address of the mobile phone. The mobile phone 31 shifts from the normal mode to the emergency mode at the same time as calling 110, and changes the call state information in the memory 2 to “emergency mode call state”. As a method for specifying a mail address, for example, use of SMS (Short Message Service) in which a telephone number is directly used as a mail address can be considered. Other specific methods include the following methods. First, the e-mail address for emergency calls is made public in advance at the prefectural police site. Each user transmits a mail including the telephone number and mail address of his / her mobile phone to the mail address for the emergency call, and registers the information in the prefectural police server in advance. In this state, when the mobile phone 31 makes the 110th call and the reception board 33-1 receives the emergency call, the operator in the call center sends the mail address corresponding to the 110th caller's phone number from the prefectural police server. Search and identify. By these processes, the operator can easily specify the mail address of the emergency call source mobile phone.

  Next, the operator uses a computer in the call center to send a mail including connection destination information for connecting to the receiving board 33-1 to the mail address of the mobile phone 31 specified above (S2). ). Then, the mobile phone 31 that has received this mail stores the connection destination information included in the mail in the memory 2. Thereby, for example, when the mobile phone 31 returns from the outside of the service area to the service area, based on the connection destination information stored in the memory 2, the mobile phone 31 is connected to the receiving table 33-1 connected before moving out of the service area. It becomes possible to reconnect.

  FIG. 6 is a diagram illustrating an example of connection destination information. The connection destination information includes, for example, a terminal identifier such as a unique telephone number assigned to the telephone set in the reception board 33-1 as the connection destination information after returning from outside the service area to the service area. In addition to the emergency call special number (110, etc.), each receiving table can be assigned a unique telephone number for each telephone in the receiving table. A call is possible. In the above description, the telephone number of the telephone in the reception table is included in the mail as the connection destination information after returning from outside the service area to the service area. However, the present invention is not limited to this. For example, DID (Direct Inward Dialing), SIP (Session Initiation Protocol) number, IP address, etc. may be included depending on the type of line. Further, the mail including the connection destination information may further include transmission destination information such as an image, video, and sound, and mail transmission destination information (mail address) as an option. For example, IP address, URL (Uniform Resource Locator), and the like can be considered as transmission destination information such as images, videos, and sounds.

  FIG. 7 is a sequence diagram showing the internal operation of the mobile phone 31 when a mail is received. First, the data communication control unit 16 that receives the mail via the antenna 8 and the transmission / reception control unit 11 transfers the mail to the mail control unit 14 (S11, S12). Then, the mail control unit 14 that has received the mail reads the current call state information from the memory 2 (S13).

  For example, when the current call state information is other than “emergency mode call state” (S14, No), the mail control unit 14 determines that the received mail is a normal mail other than the mail sent as a response to the emergency call. Judgment is made and normal mail reception processing is executed (S15). On the other hand, when the current call state information is “emergency mode call state” (S14, Yes), the mail control unit 14 reads the sender identification information from the memory 2 (S16). Then, the mail control unit 14 confirms whether the received mail is a mail sent from a computer in the call center as a response to the emergency call based on the transmission source identification information (S17). As a confirmation method, for example, it is determined whether the mail is sent from a computer in the call center based on whether the sender identifier information is key information and the decryption by the public key cryptosystem or the electronic signature can be normally performed.

  For example, in the case of a mail other than mail sent from a computer in the call center as a response to an emergency call (S18, No), the mail control unit 14 executes normal mail reception processing (S15). On the other hand, in the case of a mail sent from a computer in the call center as a response to the emergency call (S18, Yes), the mail control unit 14 extracts connection destination information from the mail (S19). Then, the extracted connection destination information is notified to the terminal control unit 12 (S20), and then the received mail is deleted (S21). In addition, the terminal control unit 12 that has received the connection destination information in the process of S20 stores the connection destination information in the memory 2 (S22).

  As described above, by performing the operations shown in FIGS. 5 and 7, the mobile phone 31 is connected to the receiving table 33-1 having jurisdiction over the prefecture F, and re-enters the receiving table 33-1 when returning from outside the service area. Connection destination information, which is information for connection, is stored in the memory 2. The processing for storing the connection destination information in the memory 2 is performed in the “emergency mode call state” after the 110th call, but as soon as possible after the transition to the “emergency mode call state”. It is desirable to be implemented.

  Next, the state transition of the mobile phone 31 will be described. FIG. 8 is a diagram showing state transition of the mobile phone 31. In FIG. 8, the “normal mode call state” includes four states of “power-off state”, “standby state”, “calling state”, and “communication state”. For example, when the power button of the operation unit 3 is pressed in the “power OFF state”, the mobile phone 31 shifts to the “standby state”. When the power button of the operation unit 3 is pressed in the “standby state”, the mobile phone 31 shifts to the “power off state”. In addition, when off-hook and telephone number input are performed using the operation unit 3 in the “standby state”, the mobile phone 31 shifts to a “calling state”. When a response signal is received from the counterpart device via the antenna 8 in the “calling state”, the mobile phone 31 shifts to the “calling state”. Further, when the on-hook is performed using the operation unit 3 in the “calling state”, the mobile phone 31 shifts to the “standby state”. In these four states, “normal mode call state” is recorded in the memory 2 as call state information.

  In FIG. 8, the emergency mode includes four states of “emergency mode call state”, “emergency mode out-of-service state”, “emergency mode reconnection state”, and “emergency mode reconnection call state”. For example, when an off-hook and No. 110 input is performed using the operation unit 3 in the “standby state”, the mobile phone 31 shifts to the “emergency mode call state”. At this time, “emergency mode call state” is recorded in the memory 2 as the call state information.

  In addition, when the movement from the reception area 34 to the out-of-service area 51 is detected by the service area recovery control unit 15 in the “emergency mode call state”, that is, when the emergency call communication is disconnected, the mobile phone 31 , “Emergency mode out of service area”. At this time, “emergency mode out-of-range state” is recorded in the memory 2 as the call state information. Then, the mobile phone 31 starts collecting out-of-service voice, image, and video.

  Further, when movement to the reception area 34 or the reception area 44 is detected by the area recovery control unit 15 in the “emergency mode out-of-range state”, the mobile phone 31 shifts to the “emergency mode reconnection state”. At this time, “emergency mode reconnection state” is recorded in the memory 2 as the call state information. Then, the cellular phone 31 autonomously makes a call to the receiving board 33-1 using the telephone number recorded as the connection destination information.

  When a response signal is received from the receiving board 33-1 via the antenna 8 in the “emergency mode reconnection state”, the mobile phone 31 shifts to the “emergency mode reconnection call state”. At this time, “emergency mode reconnection communication state” is recorded in the memory 2 as the call state information. Then, the mobile phone 31 stops collecting voice, image, and video. In addition, the mobile phone 31 transmits the collected voice, image, and video information to the call center via the antenna 8. This transmission is performed, for example, based on transmission destination information such as an image, video, and audio included in the connection destination information recorded in the memory 2.

  In addition, when the transmission of the voice, image, and video information is completed in the “emergency mode reconnection call state”, the mobile phone 31 returns to the “emergency mode call state”. At this time, “emergency mode call state” is recorded in the memory 2 as the call state information. In this state, the notifier resumes the call with the operator of the receiving board 33-1.

  Further, when the on-hook is performed using the operation unit 3 in the “emergency mode call state”, the mobile phone 31 shifts to the “standby state”. At this time, “normal mode call state” is recorded in the memory 2 as the call state information.

  FIG. 9 is a sequence diagram showing the internal operation of the mobile phone 31 in the emergency mode. In FIG. 9, the 110th notification has already been made by the mobile phone 31, and the terminal control unit 12 has changed the call state information in the memory 2 from “normal mode call state” to “emergency mode call state”. It is assumed that

  First, the mail control unit 14 extracts connection destination information from the received mail from the computer in the call center shown in FIG. 3, and notifies the terminal control unit 12 of the extracted connection destination information (see S31 and S20 in FIG. 7). . Next, the terminal control unit 12 that has received the connection destination information stores the connection destination information in the memory 2 (see S32 and S22 in FIG. 7).

  In this state, when the in-zone recovery control unit 15 detects the movement of the own device from the reception area 34 to the out-of-service area 51, the in-area recovery control unit 15 moves the own device to the out-of-service area 51 with respect to the terminal control unit 12. It is notified (S33). The terminal control unit 12 changes the call state information in the memory 2 from the “emergency mode call state” to the “emergency mode out-of-service state” (S34).

  Next, the terminal control unit 12 instructs the recording control unit 20 to record audio (S35), and further instructs the camera control unit 19 to shoot images and videos (moving images) (S36). Then, the recording control unit 20 stores the audio data recorded via the audio control unit 13 in the memory 2. In addition, the camera control unit 19 stores information on images and videos taken by the camera unit 5 in the memory 2. In this embodiment, the out-of-service information is collected by recording sound and shooting images and videos. However, the present invention is not limited to this, and at least one information of sound, image, and video is collected. It is good to do. Moreover, it is good also as not collecting these information outside a service area.

  Thereafter, when the area restoration control unit 15 detects the movement of the own device from the outside area 51 to the area, that is, the reception area 34 or the reception area 44, the area restoration control unit 15 instructs the terminal control unit 12 to (S37) is notified that has moved into the area. The terminal control unit 12 changes the call state information in the memory 2 from the “emergency mode out-of-service state” to the “emergency mode reconnection state” (S38).

  Next, the terminal control unit 12 instructs the display control unit 18 to display the 110th calling screen (S39). Then, in accordance with the call screen display instruction, the display control unit 18 controls the display unit 4 to display that it is the 110th call (S40). At the same time, the terminal control unit 12 makes a call to the reception board 33-1 using the telephone number included in the connection destination information in the memory 2 via the transmission / reception control unit 11 (S41). And the terminal control part 12 receives a response signal from the receiving stand 33-1 via the transmission / reception control part 11 (S42). As a result, the line between the mobile phone 31 and the receiving board 33-1 is connected. When the line between the mobile phone 31 and the reception board 33-1 is connected, the terminal control unit 12 changes the call state information in the memory 2 from “emergency mode reconnection state” to “emergency mode reconnection call state”. (S43).

  Next, the terminal control unit 12 instructs the recording control unit 20 to stop recording audio (S44), and further instructs the camera control unit 19 to stop capturing images and videos (moving images) (S45). ). Further, the terminal control unit 12 controls the data communication control unit 16 to transmit the audio, image, and video information stored in the memory 2 to a predetermined transmission destination included in the connection destination information (S46). ). Thereby, the operator of the receiving stand 33-1 can know the situation around the mobile phone 31 in the out-of-service area via the computer in the call center. When the terminal control unit 12 receives the completion of transmission of the audio, image, and video information from the data communication control unit 16 (S47), the terminal control unit 12 sets the call state information in the memory 2 as “emergency mode reconnection call state”. To “emergency mode call state” (S48).

  Next, differences in operation between the conventional wireless communication system and the wireless communication system of the present embodiment will be described with reference to the drawings. FIG. 10 is a diagram illustrating an operation example of the conventional wireless communication system, and more specifically, shows a case where the conventional mobile phone 31a moves from the reception area 34 to the reception area 44 via the out-of-service area 51. . In FIG. 10, a reporter who is in the reception area 34 makes a 110 call using a conventional mobile phone 31 a, and the mobile phone 31 a receives the jurisdiction over F prefecture via the radio base station 32. The case where it connects with the receiving stand 33a-1 among the stand 33a-1 to 33a-n is assumed.

  In this state, when the reporter moves to the out-of-service area 51, the communication line between the mobile phone 31a and the receiving board 33a-1 is disconnected. That is, the conversation between the reporter and the operator of the receiving table is disconnected. Further, along with the disconnection of the telephone line, on the receiving stand 33a-1, on-hook is performed by the operation of the operator. After that, when the reporter further moves from the out-of-service area 51 to the reception area 44 and the mobile phone 31a returns to the service area, the reporter resumes the conversation with the operator of the reception table 33a-1 in order to resume the conversation. The 110th notification is made again using the mobile phone 31a. However, in the conventional wireless communication system, the mobile phone 31a is not connected to the reception base 33a-1 in the reception area 34 before moving out of the service area, but via the wireless base station 42 as shown in FIG. Will be connected to the receiving table 43a having jurisdiction over the prefecture S. That is, the conventional mobile phone 31a cannot be reconnected to the receiving stand 33a-1 that was connected before moving out of the service area.

  On the other hand, in the present embodiment, when the mobile phone 31 in communication with the reception board 33-1 moves from the reception area 34 to the reception area 44 via the out-of-service area 51, the original reception is performed within the reception area 44. It was possible to reconnect to the receiving table 33-1 in the area 34.

  FIG. 11 is a diagram illustrating an operation example of the wireless communication system according to the present embodiment. Specifically, the mobile phone 31 moves from the reception area 34 to the reception area 44 via the out-of-service area 51. .

  Specifically, as shown in FIG. 7, the mobile phone 31 stores connection destination information sent from a computer in the call center shown in FIG. 3 in the memory 2 in the “emergency mode call state”. Then, when the mobile phone 31 is disconnected from the reception table 33-1 by moving to the out-of-service area 51 and then returned to the reception area 44, the mobile phone 31 reconnects to the reception table 33-1. As shown in FIG. 9, a call is made by the telephone number of the receiving board 33-1. Thereby, as shown in FIG. 11, the mobile phone 31 can be reconnected to the receiving base 33-1 connected before moving out of the service area via the wireless base station 42 and the wireless base station 32. It becomes. In the present embodiment, for example, even when the mobile phone 31 moves from the reception area 34 to the reception area 34 again via the out-of-service area 51, the mobile phone 31 makes a call based on the telephone number of the receiving board 33-1. By making a call, it becomes possible to reconnect to the receiving board 33-1.

  As described above, in the present embodiment, the mobile phone 31 is connected to the receiving base 33-1 from the computer in the call center including the receiving base 33-1 to which the emergency call sent by itself is connected. The connection destination information is received and saved. Then, the mobile phone 31 makes an emergency call to the receiving board 33-1 based on the connection destination information when reconnecting after returning from the range after the call is disconnected for a long time due to movement. did. Thereby, the mobile phone 31 enables reconnection of an emergency call with the reception board 33-1 connected before moving outside the service area.

DESCRIPTION OF SYMBOLS 1 Processor 2 Memory 3 Operation part 4 Display part 5 Camera part 6 Microphone 7 Speaker 8 Antenna 9 Radio | wireless communication part 10 Audio | voice input / output part 11 Transmission / reception control part 12 Terminal control part 13 Voice control part 14 Mail control part 15 Recovery control part 16 Data communication control unit 17 Operation control unit 18 Display control unit 19 Camera control unit 20 Recording control unit 21 Reception table 22-1, 22-2, 22-n Computer 23 Router 25 Private branch exchange 26-1, 26-2, 26- n Telephone

Claims (2)

A wireless terminal,
A storage unit;
When an emergency call is made, the call state stored in the storage unit is changed to the emergency mode call state, and the terminal whose call state is the emergency mode call state moves out of the wireless area. A terminal control unit that changes the call state to an emergency mode reconnection state when moving into a wireless area again;
In response to the reception of the mail, it is determined whether or not the call state is an emergency mode call state. If the call state is the emergency mode call state, a terminal identifier included in the mail is extracted and stored in the storage unit An email control unit
With
The terminal control unit
In response to the call state being changed to the emergency mode reconnection state, making a call specifying the terminal identifier;
A wireless terminal characterized by that. The mail control unit
When the terminal whose call state is the emergency mode call state moves out of the wireless area, it collects at least one information of voice, image, video,
Then, when the wireless terminal moves within the wireless area and makes a call specifying the terminal identifier, the collected information is transmitted to the sender of the mail.
The wireless terminal according to claim 1.

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