JP4685665B2 - Telephone network system - Google Patents

Description

  The present invention relates to a telephone network system having as few movable parts as possible.

In recent years, mobile telephones have been used in addition to fixed telephones (Patent Document 1), and speakers, microphones, batteries, displays, etc. are usually mounted on mobile telephones.
JP 2001-160850 A

  Thus, since the conventional mobile telephone is equipped with a speaker, a microphone, a battery, a display, and the like, it requires a certain size and there is a limit to downsizing.

  Therefore, an object of the present invention is to make the mobile phone as small as possible.

  To achieve the above object, according to a first aspect of the present invention, there is provided one or more relay apparatuses including a mobile terminal including a wireless IC tag and a reading unit capable of reading information on the wireless IC tag of the mobile terminal. And at least one set of directional microphones and speakers capable of changing the direction, and the position of the mobile terminal based on the strength of the radio waves and the direction of the radio waves when the reading mechanism of the relay device reads the information of the wireless IC tag. A telephone network system for establishing a call using the directional microphone and speaker, wherein the mobile terminal is connected to a wireless IC by reading means of the relay device. A call switch that can include call start information when the tag information is read, and the server includes the wireless IC tag information read by the reading means of the relay device. When recognizing that the information of the call start is included, based on the position information of the mobile terminal recognized by the position recognition means, the directional microphone and speaker are directed toward the mobile terminal, Calling processing is executed.

  The second aspect of the present invention is a mobile terminal equipped with a wireless IC tag, and at least three or more relay devices equipped with reading means capable of reading information on the wireless IC tag of the mobile terminal, and the direction can be changed. And at least one pair of directional microphones and speakers, and position recognition means capable of recognizing the position of the mobile terminal based on the strength of radio waves when the reading mechanism of each relay device reads information on the wireless IC tag. A telephone network system for establishing a call using the directional microphone and speaker, wherein the mobile terminal reads information on the wireless IC tag by the reading means of the relay device The server includes a call switch that can include call start information, and the server includes the call start information in the wireless IC tag information read by the reading unit of the relay device. The call processing is performed with the directional microphone and speaker directed toward the mobile terminal based on the position information of the mobile terminal recognized by the position recognition means. Features.

  In the telephone network system according to these two aspects, when the call processing is performed by catching a predetermined voice by the directional microphone, a predetermined telephone number is selected based on the type of the voice, and the selected telephone number is selected. The call to is processed.

  Further, the third aspect of the present invention is a mobile terminal provided with a wireless IC tag, and one or more relay devices provided with reading means capable of reading information on the wireless IC tag of the mobile terminal, and the direction can be changed. Position recognition means capable of recognizing the position of the mobile terminal based on at least one set of directional microphones and speakers and the strength and strength of radio waves when the reading mechanism of the relay device reads information on a radio IC tag A telephone network system for establishing a call using the directional microphone and speaker, wherein the server can receive an incoming call addressed to a wireless IC tag of the mobile terminal. Call processing means, and when the incoming call processing means receives an incoming call addressed to the wireless IC tag of the mobile terminal, the directivity is based on the location information of the mobile terminal recognized by the location recognition means. The microphone and the speaker are directed toward the mobile terminal to generate an incoming call sound from the speaker, and the mobile terminal starts the incoming call when the reading means of the relay device reads the information of the wireless IC tag. When the server recognizes that the information of the wireless IC tag read by the reading means of the relay device includes the information of the incoming call, It is characterized in that a call with is established.

  Further, the fourth aspect of the present invention is a mobile terminal equipped with a wireless IC tag, and at least three or more relay devices equipped with reading means capable of reading information on the wireless IC tag of the mobile terminal, and the direction can be changed. And a position recognition means capable of recognizing the position of the mobile terminal based on the strength of radio waves when the reading mechanism of the relay device reads information on the wireless IC tag. A telephone network system for establishing a call using the directional microphone and speaker, wherein the server is capable of receiving an incoming call addressed to a wireless IC tag of the mobile terminal. When the incoming call processing means receives an incoming call addressed to the wireless IC tag of the mobile terminal, the directivity is determined based on the location information of the mobile terminal recognized by the location recognition means. A microphone and a speaker are directed toward the mobile terminal to generate an incoming call sound from the speaker. When the mobile terminal causes the reading unit of the relay device to read the information of the wireless IC tag, the incoming call starts. An incoming call switch capable of including information, and when the server recognizes that the information of the wireless IC tag read by the reading means of the relay device includes the information of the incoming call, It is characterized by establishing a telephone call.

  In the telephone network system according to the above four aspects, two or more directional microphones and speakers are provided, and the server includes a directional microphone and a directional microphone that are closest to the mobile terminal based on position information of the mobile terminal. The speaker is preferably directed toward the mobile terminal to establish a call using the directional microphone and the speaker, and the directional microphone and the speaker are more predetermined than the position of the mobile terminal. It is preferable to be configured so as to be directed to the position of the height. Furthermore, the wireless IC tag is preferably configured to operate using radio waves transmitted from the relay device as an energy source.

  In the network system according to the present invention, the radio IC tag of the mobile terminal is read when the radio IC tag of the mobile terminal receives the radio wave transmitted by the relay device and reflects a part of the radio wave. The information is converted into a reflected waveform and transmitted, and the relay apparatus receives the radio wave of the reflected waveform.

  As a usage mode of the telephone network system of the present invention, a railway or subway station, a predetermined area of an airport, an exhibition hall, a hotel, or the like can be considered.

  As described above, according to the telephone network system of the present invention, what is mounted on the mobile terminal owned by the person is limited to the wireless IC tag, and the microphone, speaker, etc. are installed on the relay device side. The phone can be made as small as possible.

  Next, a first embodiment of a telephone network system according to the present invention will be described with reference to the drawings. FIG. 1 is a functional block diagram showing the configuration of the telephone network system 100 according to the first embodiment. The telephone network system 100 according to the first embodiment includes a mobile terminal 2, a relay device 4, a server 6, a directional speaker 8, and a directional microphone 10.

  The mobile terminal 2 is a passive RFID tag that does not contain a battery. The mobile terminal 2 operates using the probe radio wave transmitted from the relay device 4 as an energy source, and is stored inside when a part of the received probe radio wave is reflected. The ID information is converted into a reflected waveform and transmitted to the relay device 4. The mobile terminal 2 includes an RFID chip 24, a switch 26, and an antenna 28 as shown in FIG. The RFID chip 24 stores ID information such as an identification number, and is configured to convert a part of the received probe radio wave into a signal A corresponding to this ID information and output it to the antenna 28. The switch 26 is, for example, a high frequency switch MESFET, and is configured to generate a signal B by inputting the signal A from the RFID chip 24 and shifting the phase only when the switch 26 is ON. The antenna 28 receives the signal A from the RFID chip 24 and transmits it to the relay device 4 when the switch 26 is OFF, and transmits the signal A from the RFID chip 24 and the signal B from the switch 26 when the switch 26 is ON. It is configured to input and transmit to the relay device 4. Further, the signal B functioning as a call start signal may be generated so as to invert the signal A. The mobile terminal 2 is provided with ID information such as an identification number, and has, for example, a batch form that can be worn on clothes of the user 18.

  A plurality of relay apparatuses 4 are installed at predetermined intervals so that any one of the radio waves reaches the entire area of the predetermined network system area 22, and all of them are connected to the server 6. The relay device 4 is configured to transmit a probe radio wave to the surroundings according to a control signal periodically input from the server 6 and receive a reflected wave from the mobile terminal 2.

  The directional speaker 8 is a speaker that is installed in the network system area 22 and transmits sound only in a specific direction. Similarly, the directional microphone 10 is a microphone that is installed in the network system area 22 and receives sound only in a specific direction with high sensitivity. The directional speaker 8 and the directional microphone 10 are arranged on a turntable 20 installed in the network system area 22 as shown in FIG. The turntable 20 is rotatably installed so that the audible area of the directional speaker 8 and the collectable sound area of the directional microphone 10 can cover the network system area 22. The turntable 20 is connected to the server 6 and is configured to be controlled to rotate by the server 6.

  As shown in FIG. 4, the server 6 includes a program storage unit 30 that stores a program, a CPU, a memory, and the like, and a control unit 32 that executes the program stored in the program storage unit 30, and each relay device 4. A relay unit position information DB 34 for storing the position information of the mobile terminal, a mobile terminal position information DB 36 for storing the position information of the mobile terminal 2, a SIP server unit 38, and a communication unit for communicating with each relay unit 4, the turntable 20, and the like. 40.

  The mobile terminal location information DB 36 stores information such as the phone number of the mobile terminal 2, ID information, availability, location information, whether or not a call is in progress, a call forwarding destination, and a call service expiration date for each mobile terminal 2. It is stored in association with.

  The SIP server unit 38 is connected to a wide area network system such as the Internet. Since the telephone network system according to the present embodiment functions as a VoIP SIP server, the telephone number associated with the ID information of each mobile terminal 2 Is remembered.

  The program storage unit 30 acquires the location information of the mobile terminal 2 existing in the network system area 22 and receives the location information acquisition program 42 for updating the mobile terminal location information DB 36 and the incoming call processing. A call process execution program 44 and a call process execution program 46 for executing the call process are stored.

  When the communication unit 40 receives the reflected wave data from each relay device 4, the position information acquisition program 42 acquires the ID information of the mobile terminal 2 from the waveform and moves with each relay device 4 from the radio wave intensity of the reflected wave. This is a program that obtains the distance to the terminal 2, calculates the position of the mobile terminal 2 therefrom, and updates the information stored in the mobile terminal position information DB. When updating the information stored in the mobile terminal position information DB 36, first, the ID information of the received reflected wave data is searched, and the position information of the searched ID information is compared with the calculated position information. , Update. In addition, when the reflected wave data related to the ID information whose availability is “O” among those registered in the mobile terminal location information DB 36 is not received, the availability of the ID information is updated to “×”. To do.

  The calling process execution program 46 is a program for executing a calling process based on the voice data of the user's telephone number received by the directional microphone 8. For example, the abbreviated number and the telephone number correspond to each mobile terminal 2. The registered abbreviated number DB may be provided, the voice data of the user abbreviated number is applied to the abbreviated number DB, the corresponding telephone number is searched, and the calling process is executed. good.

  Next, the operation of acquiring location information of the mobile terminal in the telephone network system 100 according to the present embodiment will be described based on the sequence chart shown in FIG. This operation is executed based on the position information acquisition program 42. First, when the server 6 performs control input to each relay device 4 so as to transmit probe radio waves (S100), each relay device 4 transmits probe radio waves to the surroundings (S102). Upon receiving this probe radio wave, the mobile terminal 2 converts the ID information into a reflected wave waveform and transmits it to the surroundings (S104). Each relay device 4 in the range where this reflected wave can be received receives this reflected wave and outputs reflected wave data such as its waveform and radio wave intensity to the server 6 (S106). The server 6 identifies the ID information of the mobile terminal 2 from the waveform of the reflected wave obtained by each relay device 4, and receives the position information of each relay device 4 stored in the relay device position information DB 34 and received by each relay device 4. The position of the mobile terminal 2 is acquired from the radio wave intensity of the reflected wave (S108). The server 6 updates the database DB (S110).

  Next, an incoming call operation of the telephone network system 100 according to the present embodiment will be described based on a sequence chart shown in FIG. This operation is executed based on the incoming call process execution program 44. When a call is made from another VoIP terminal 12 to the mobile terminal 2, first, an “INVITE” method for establishing a session is transmitted from the VoIP terminal 12 to the SIP server 14 (S200). When there is a session request from the VoIP terminal 12, the SIP server 14 transmits an “INVITE” method to the server 6 (S 202) and informs the VoIP terminal 12 that is the transmission source that a session request is being executed. The “100 Trying” method is transmitted (S204). When there is a session request from the SIP server 14, the server 6 sends a control input to each relay device 4 so as to transmit a probe radio wave (S 206), and transmits a “100 Trying” method to the SIP server 14 (S 208). ). When a control signal is input from the server 6, each relay device 4 transmits a probe radio wave to the surroundings (S210). When receiving the probe radio wave, the mobile terminal 2 converts the ID information into a reflected wave waveform and transmits it to the surroundings (S212). The relay device 4 receives this reflected wave and outputs reflected wave data such as its waveform and radio wave intensity to the server 6 (S214). The server 6 acquires the position information of the mobile terminal 2 based on the input reflected wave data (S216). The server 6 acquires the telephone number of the mobile terminal 2 included in the “INVITE” method, and refers to the DB 36 to grasp the ID information and the position information based on the telephone number. Based on the position information, the server 6 directs the turntable 20 to the mobile terminal 2 and transmits a control signal so as to transmit a ringing sound from the directional speaker 8 (S218). A “180 Ringing” method for notifying that the calling is in progress is transmitted (S220). Upon receiving the “180 Ringing” method from the server 6, the SIP server 14 transmits the “180 Ringing” method to the VoIP terminal 12 (S222). On the other hand, the turntable 20 to which the control signal is input from the server 6 rotates in the direction of the mobile terminal 2, and the directional speaker 8 emits a ringing tone (S224). When the user 18 who has heard the ringing tone turns on the switch 12 of the mobile terminal 2 and transmits a call start signal including ID information in order to start the call (S226), the relay apparatus 4 reflects the reflected signal of the mobile terminal 2. Is detected and the server 6 is notified (S228). When the server 6 confirms the ID information included in the call start signal and confirms that the call start signal is received from the mobile terminal 2 from which the VoIP terminal 12 requested the call, the server 6 informs that the request is successful. The “200 OK” method is transmitted to the SIP server 14 (S230). When the SIP server 16 receives the “200 OK” method from the server 6, the SIP server 16 transmits the “200 OK” method to the VoIP terminal 12 (S232). When receiving the “200 OK” method, the VoIP terminal 12 transmits an “ACK” method informing that the reception has been confirmed to the server 6 (S234), and a call session between the server 6 and the VoIP terminal 12, that is, this embodiment. A call session between the telephone network system 100 and the VoIP terminal 12 is established. The conversation from the VoIP terminal 12 is transmitted to the speaker 8 through the server 6, and the conversation from the mobile terminal 2 reaches the VoIP terminal 12 through the microphone 10 through the server 6 and is established. When the call ends and the user 18 turns off the switch 12 of the mobile terminal 2, the server 6 sends a “BYE” method to notify the VoIP terminal 12 of the disconnection of the session (S236), and receives the VoIP terminal 12 Transmits a “200 OK” method to the server 6 (S238), and the call session is disconnected. In the present embodiment, the position of the mobile terminal 2 is confirmed again when the server 6 receives the “INVITE” method. However, the position information acquired periodically based on FIG. 5 may be used. In this case, the processes of S206, S210, S212, and S214 are omitted.

  Next, a call operation of the telephone network system 100 according to the present embodiment will be described based on a sequence chart shown in FIG. This operation is executed based on the calling process execution program 46. First, when the user 18 turns on the switch 12 of the mobile terminal 2 to make a call to the VoIP terminal 12, a call start signal including ID information is transmitted (S300). The relay device 4 transmits the reflected signal data of the mobile terminal 2 including the call start signal to the server 6 (S302). The server 6 detects a call start signal including ID information from the reflected signal data (S304). The server 6 performs control input so as to rotate the turntable 20 based on this position information and output a notification sound from the directional speaker 10 (S306). When the turntable 20 rotates and a notification sound is output from the directional speaker 10 (S308), the user 18 speaks the number of the other party to the directional microphone 8 (S310). The directional microphone 8 transmits audio data to the server 6 (S312). The server 6 converts this voice data into a telephone number, and transmits an “INVITE” method for establishing a session to the SIP server 14 to which the corresponding VoIP terminal 12 is connected (S314). When there is a session request from the server 6, the SIP server 14 transmits an “INVITE” method to the VoIP terminal 12 (S 316), and informs the server 6 that a session request is being executed, a “100 Trying” method. Is transmitted (S318). When receiving the “INVITE” method from the SIP server 14, the VoIP terminal 12 emits a ringing tone and transmits a “180 Ringing” method for notifying the SIP server 14 that the calling is in progress (S 320). When receiving the “180 Ringing” method from the VoIP terminal 12, the SIP server 14 transmits the “180 Ringing” method to the server 6 (S322). On the other hand, when the other party who hears the ringing tone picks up the handset of the VoIP terminal 12, the VoIP terminal 12 transmits a “200 OK” method to the SIP server 14 (S324). Upon receiving the “200 OK” method from the VoIP terminal 12, the SIP server 14 transmits the “200 OK” method to the server 6 (S326). Upon receiving the “200 OK” method, the server 6 transmits an “ACK” method notifying that the reception has been confirmed to the VoIP terminal 12 (S332). As a result, a call session between the server 6 and the VoIP terminal 12, that is, a call session with the telephone network system 100 according to the present embodiment is established. When the call is finished and the handset of the VoIP terminal 12 is placed, a “BYE” method is transmitted from the VoIP terminal 12 to the server 6 to notify the disconnection of the session (S334), and the server 6 that has received this is “200 OK”. The method is transmitted to the VoIP terminal 12 (S336). As a result, the call session is disconnected.

  The telephone network system 100 configured in this manner allows the user 18 to wear the mobile terminal 2 having ID information, and the directional microphone 8 and the directional speaker 10 are installed outside the mobile terminal 2. The terminal 2 can be reduced in size. Further, since the user 18 only has to wear the mobile terminal 2 on clothes or the like, the user 18 can make a hand-free call in the network system area 22.

  Also, as shown in FIG. 8, when a call is received from the VoIP terminal 12 when the user 18 is outside the network system area 22, the position corresponding to the ID information in the database DB in the incoming call operation. If it is confirmed that the information is out of service area, the answering machine or the telephone can be transferred to another telephone terminal.

  Next, a second embodiment of the telephone network system according to the present invention will be described with reference to the drawings. FIG. 9 is a functional block diagram showing the configuration of the telephone network system 200 according to the second embodiment. The telephone network system 200 includes a mobile terminal 2, a relay device 4, a server 6, a directional speaker 8, and a directional microphone 10.

  In the first embodiment, the directional speaker 8 and the directional microphone 10 are installed one by one in the network system area 22. In the second embodiment, a plurality of directivities are provided in the network system area 22. A speaker 8 and a plurality of directional microphones 10 are provided. All of these directional speakers 8 and directional microphones 10 are all connected to the server 6.

  The telephone network system 200 configured as described above acquires the location information of the mobile terminal 2 based on the location information acquisition sequence shown in FIG. 5 as in the first embodiment, and based on this location information, the mobile terminal 2 The rotation control of the turntable 20 closest to is performed.

  Thus, by installing a plurality of directional speakers 8 and microphones 5, the audible area and the collectable sound area can be expanded and the cover area can be expanded.

  In this embodiment, a plurality of relay devices 4 are installed to specify the position of the mobile terminal 2, but at least three relay devices 4 are used to obtain position information based only on the strength of the radio waves of the mobile terminal 2. What is necessary is just to be comprised with the relay apparatus 4, and in order to acquire position information based on the strength and the direction of a radio wave of the mobile terminal 2, what is necessary is just to be comprised with at least 1 relay apparatus 4. .

  In the present embodiment, the directional speaker 8 and the directional microphone 10 are configured to face the direction of the mobile terminal 2, but the directional speaker and the directional microphone are predetermined depending on the height of the mobile terminal 2. You may set so that it may face the direction of a high position. For example, if the mobile terminal 2 is worn around the chest of the user 18, the directivity is set 15 to 20 cm above the mobile terminal 2 so as to set the directivity around the user's head. By configuring in this way, the user 18 can transmit and receive an audio signal around the head, and improve the sum sensitivity.

  In the present embodiment, one directional speaker 8 and directional microphone 10 are independently installed in the network system area 22, but may be configured to be attached to the relay device 4.

  In this embodiment, when the user 18 makes a call, the directional speaker 8 is configured to speak the other party's telephone number. It is also possible to provide a switch button that allows the user to talk to the speaker 8 or to specify the other party on the mobile terminal 2.

  In the present embodiment, the server 6 is connected to the VoIP terminal 12 via the IP communication network 16 and the SIP server 14, but may be connected to a general telephone, a mobile phone, or the like. The server 6 may be configured to perform call processing and call processing by VoIP using other protocols. Further, the SIP server 14 may be configured to be physically present at the same location as the server 6.

It is a functional block diagram for demonstrating the function of the telephone network system which concerns on 1st Example of this invention. It is a functional block diagram which shows the structure of the mobile terminal in a telephone network system. It is the schematic which shows the structure of the directional speaker and directional microphone in a telephone network system. It is the schematic which shows the structure of the server in a telephone network system. It is a figure which shows the positional infomation acquisition sequence of a telephone network system. It is a figure which shows the incoming call operation | movement of a telephone network system. It is a figure which shows the calling operation | movement of a telephone network system. It is a functional block diagram which shows the structure of the application example of a telephone network system. It is a functional block diagram for demonstrating the function of the telephone network system which concerns on 2nd Example of this invention.

Explanation of symbols

2 ... Mobile terminal 4 ... Relay device 6 ... Server 8 ... Directional speaker 10 ... Directional microphone 12 ... External telephone terminal 14 ... SIP server 16 ... IP communication network 18 ... User 20 ... Turntable 22 ... Network system area 24 ... RFID tag 26 ... switch 28 ... antenna 100 ... telephone network system 200 ... telephone network system

Claims (8)

A mobile terminal equipped with a wireless IC tag;
One or more relay devices provided with reading means capable of reading information of the wireless IC tag of the mobile terminal;
At least one set of directional microphones and speakers capable of changing direction;
A server comprising position recognition means capable of recognizing the position of the mobile terminal based on the strength and strength of radio waves when the reading mechanism of the relay device reads information on a wireless IC tag; and
With
A telephone network system for establishing a call using the directional microphone and speaker,
The mobile terminal includes a call switch capable of including information on a call start when reading information of a wireless IC tag by a reading unit of the relay device,
When the server recognizes that the information on the start of call is included in the information of the wireless IC tag read by the reading means of the relay device, the server is based on the position information of the mobile terminal recognized by the position recognition means. Then, the telephone network system is characterized in that the call processing is executed with the directional microphone and speaker directed toward the mobile terminal. A mobile terminal equipped with a wireless IC tag;
At least three or more relay devices provided with reading means capable of reading information of the wireless IC tag of the mobile terminal;
At least one set of directional microphones and speakers capable of changing direction;
A server comprising position recognition means capable of recognizing the position of the mobile terminal based on the strength of radio waves when the reading mechanism of each relay device reads information of a wireless IC tag;
With
A telephone network system for establishing a call using the directional microphone and speaker,
The mobile terminal includes a call switch capable of including information on a call start when reading information of a wireless IC tag by a reading unit of the relay device,
When the server recognizes that the information on the start of call is included in the information of the wireless IC tag read by the reading means of the relay device, the server is based on the position information of the mobile terminal recognized by the position recognition means. Then, the telephone network system is characterized in that the call processing is executed with the directional microphone and speaker directed toward the mobile terminal.   In the calling process, when a predetermined voice is caught by the directional microphone, a predetermined telephone number is selected based on the type of the voice, and a call to the selected telephone number is processed. The telephone network system according to claim 1 or 2, characterized in that: A mobile terminal equipped with a wireless IC tag;
One or more relay devices provided with reading means capable of reading information of the wireless IC tag of the mobile terminal;
At least one set of directional microphones and speakers capable of changing direction;
A server comprising position recognition means capable of recognizing the position of the mobile terminal based on the strength and strength of radio waves when the reading mechanism of the relay device reads information on a wireless IC tag; and
With
A telephone network system for establishing a call using the directional microphone and speaker,
The server includes an incoming call processing means capable of receiving an incoming call addressed to the wireless IC tag of the mobile terminal, and when the incoming call processing means receives an incoming call addressed to the wireless IC tag of the mobile terminal, Based on the position information of the mobile terminal recognized by the recognition means, the directional microphone and speaker are directed toward the mobile terminal to generate an incoming call sound from the speaker,
The mobile terminal includes an incoming call switch that can include information on an incoming call start when the information of the wireless IC tag is read by the reading unit of the relay device,
When the server recognizes that the information on the start of the incoming call is included in the information of the wireless IC tag read by the reading means of the relay device, the telephone network system establishes a call with the other party. A mobile terminal equipped with a wireless IC tag;
At least three or more relay devices provided with reading means capable of reading information of the wireless IC tag of the mobile terminal;
At least one set of directional microphones and speakers capable of changing direction;
A server comprising position recognition means capable of recognizing the position of the mobile terminal based on the strength of radio waves when the reading mechanism of the relay device reads information of a wireless IC tag;
With
A telephone network system for establishing a call using the directional microphone and speaker,
The server includes an incoming call processing means capable of receiving an incoming call addressed to the wireless IC tag of the mobile terminal, and when the incoming call processing means receives an incoming call addressed to the wireless IC tag of the mobile terminal, Based on the position information of the mobile terminal recognized by the recognition means, the directional microphone and speaker are directed toward the mobile terminal to generate an incoming call sound from the speaker,
The mobile terminal includes an incoming call switch that can include information on an incoming call start when the information of the wireless IC tag is read by the reading unit of the relay device,
When the server recognizes that the information on the start of the incoming call is included in the information of the wireless IC tag read by the reading means of the relay device, the telephone network system establishes a call with the other party. Two or more directional microphones and speakers are provided,
Based on the location information of the mobile terminal, the server directs the directional microphone and speaker closest to the mobile terminal toward the mobile terminal and establishes a call using the directional microphone and speaker. 6. The telephone network system according to claim 1, wherein the telephone network system is configured.   The telephone network system according to any one of claims 1 to 6, wherein the directional microphone and the speaker are configured to be directed to a position having a predetermined height with respect to a position of the mobile terminal. 8. The telephone network system according to claim 1, wherein the wireless IC tag is configured to operate using radio waves transmitted from the relay device as an energy source.

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