JPH11239219A - Telephone exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and easily attain communication within a large premises even among members of a group. SOLUTION: A personal computer 203 connects with the telephone exchange containing pluralities of portable telephone terminals 300 and pluralities of conference trunks to select pluralities of portable telephone terminals 300 among the portable telephone terminals 300 and to set them as one conference group so as to register the conference group freely. In the case of receiving a conference speech connection request from a portable telephone terminal 300 belonging to the conference group, a conference trunk 106 is acquired and other portable telephone terminal 300 of the conference group to which the portable telephone terminal 300 belongs and the other portable telephone terminal 300 is connected to the conference trunk 106 upon the detection of its reply and a conference speech state is set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone exchange for accommodating a portable telephone terminal, and more particularly to a telephone exchange for providing a conference call to the portable telephone terminal.

[0002]

2. Description of the Related Art Conventionally, telephone exchanges have been provided with a conference call connection service. For example, a conference caller sends a special number to set up a conference connection, seizes the conference trunk, and then sends and calls the telephone number of the telephone to join the conference, and the handler of the called telephone responds. Then, a method of connecting the call to a conference trunk and providing a conference call service is well known.

[0003] In recent years, portable telephone terminal devices have become remarkably widespread, and an environment in which telephone calls can be made anytime and anywhere has become an environment. However, one-to-one calls using a portable telephone terminal device are the mainstream, and are rarely used for conference calls.

[0004]

By the way, it is popular to visit a large site such as an event venue, a ski resort, a department store, etc. in a group and enjoy the leisure. It is difficult to communicate with each other, and when an individual acts, it is common practice to decide the meeting time and meeting place. It is also conceivable to communicate with each other using a portable telephone terminal device or a wireless device. At the same time, it took time to communicate.

Accordingly, it is an object of the present invention to allow a person to own a portable telephone terminal device and to easily and easily communicate with even an organization using the portable telephone terminal device. The present invention provides a telephone exchange device which has been described above.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a telephone exchange apparatus for accommodating a plurality of portable telephone terminals, wherein the telephone exchange selects a plurality of portable telephone terminals from the plurality of portable telephone terminals. A conference group setting means for setting this to one conference group, a speech path switch for freely setting a speech path, and a speech communication apparatus which is accommodated in the speech path switch and mixes input voice signals to conduct a conference call. And a conference trunk that provides information indicating the portable telephone terminal device from a portable telephone terminal device belonging to the conference group. Conference group recognizing means for recognizing a conference group to which a portable telephone terminal belongs, and a portable telephone terminal device which has made the conference call connection request among the recognized conference groups. Extracting means for extracting all the other portable telephone terminal apparatuses, calling means for simultaneously calling all the portable telephone terminal apparatuses extracted by the extracting means, and a response from the called portable telephone terminal apparatus. Upon detection, a portable telephone terminal device that has requested the conference call connection to the captured conference trunk, and a telephone line control unit that controls the telephone line switch so as to connect the portable telephone terminal device that has responded. , Is achieved.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a system configuration diagram showing an embodiment of the present invention. In FIG. 1, a telephone exchange according to the present invention includes a communication path switch (SW) 100, a radio interface device 101 (DRIF), and a radio base station (CS) 1.
02 and multi-function telephone interface device (MTLIN)
103, a central office trunk (COT) 105, a conference trunk (CFT) 106, a digital line interface unit (DLIN) 107, a control bus 108, a central control unit (CC) 109, and a main storage unit (MM) 110
And an external interface device (I / F) 111.

The communication path switch 100 includes a wireless interface device 101, a multifunctional telephone interface device 10
3. It accommodates a central office trunk 105, a conference trunk 106, and a digital line interface device 107. Under the control of the central control device 109, a communication path is freely set between these devices. The wireless interface device 101 connects the wireless base station 102 and performs an interface related to a call connection of the portable telephone terminal device 300. Multifunctional telephone interface device 10
Reference numeral 3 denotes a connection of the multi-function telephone 400 and an interface for call connection of the telephone and other connection control operations. The office line trunk 105 interfaces with a public network and performs a so-called outside line communication connection operation. The conference trunk 106 mixes the input audio signals, and then adjusts the level to distribute and transmit the signals, thereby enabling a conference call between three or more terminal devices. The digital line interface device 107 is connected to a LAN described below, sends information from the LAN to the public network via the communication path switch 100 and the office trunk 105, and enables Internet or WAN connection. Things.

The control bus 108 connects the communication path switch 100, the central control device 109, the main storage device 110, and the external interface device 111, and exchanges data and control information between these devices. It is something to make. The central control unit 109 controls the entire telephone exchange, and performs an exchange operation in accordance with a processing program, station data, various tables, and the like stored in the main storage device 110. The external interface device 111 performs an interface with the LAN, and exchanges various information and data with a server or a client connected to the LAN.

The LAN is connected to a file server 200 and a print server 201 connecting the printer 202.
And a client personal computer 203 to which a card reader 204 is connected, and a router (R) 205 used when connecting to a computer system such as an external server or client. Here, the personal computer 203
Can exchange various information and data with the telephone exchange, can receive call information from the telephone exchange, and can store station data and various tables stored in the main storage device 110 of the telephone exchange. The configuration is such that settings can be registered.

FIG. 2 is a diagram showing the concept of a state in which a system including a telephone exchange and a LAN according to the present invention shown in FIG. 1 is installed. FIG. 2 shows a case where the system of the present invention is installed in a building such as a department store. A telephone exchange and a LAN are installed on the first floor, and a multifunctional telephone 400 and a personal computer 203 are provided at the front desk, reception desk, and the like. ing. In addition, a wireless base station 102 is installed on each floor, and a person who owns the portable telephone terminal device 300
You can make and receive calls from anywhere.

FIG. 3 is a plan view of the portable telephone terminal device. In FIG. 3, the portable telephone terminal device 300 includes an outside button 301, a group button 302, a front button 303, an extension button 304, and a hold button 305.
, A disconnect button 306, an LCD display unit 307, and a dial button 308.

The outside line button 301 is used to request an outside line connection and to respond to an incoming call from an outside line. The group button 302 is used to request a conference call connection with another portable telephone terminal device belonging to the same conference group as the own portable telephone terminal device and to answer an incoming call related to the conference call connection. It is used. The front button 303 is used when requesting a call connection with the front telephone (multi-function telephone 400) and answering an incoming call from the front telephone. The extension button 304 is used when requesting an extension call connection and responding to an incoming call from an extension. The hold button 305 is used when a call in progress is put on hold and when the call is released from the hold state. The disconnect button 306 is used to disconnect (release) a call during a call.

The LCD display unit 307 displays a call time,
It displays information related to various calls such as the other party's dial number. Dial button 308, as is well known,
It is used when a destination dial or a special number is input.

FIG. 4 is a plan view of the multifunction telephone. In FIG. 3, a multi-function telephone 400 has a dial button 4
01, handset 402, conference group button 4
03 and an LCD display unit 404.

As is well known, the dial button 401 is
The handset 402 is used for inputting a destination dial or a special number, and the handset 402 includes a transmitter and a receiver and is used for a call. The conference group button is provided corresponding to a conference group configured by the portable telephone terminal device 300. When a button corresponding to a conference group to which a call connection is to be made is pressed, a mobile phone belonging to the conference group is pressed. It is used when a simultaneous call is made to the portable telephone terminal device and a conference call including the multi-function telephone 400 is made. The LCD display unit 4
Reference numeral 04 displays information related to various calls, such as a call time and a dial number of the other party, similarly to the LCD display unit 307.

FIG. 5 shows the setting status of the portable telephone terminal device,
It is a terminal state table which stores and stores a state. In FIG. 5, the terminal status table T50 is stored in the main storage device 110 of the telephone exchange, and the terminal status table T50 stores the setting status and status for each portable telephone terminal device. Have been. In FIG. 5, for the terminal number T51 of each portable telephone terminal device,
A terminal type T52, a conference group number T53, state information T54, and a connection destination T55 are set and stored.

The terminal type T52 is an area for setting whether the portable telephone terminal device is a rental terminal device or a business terminal device. The conference group number T53 is an area for setting and storing the conference group to which the portable telephone terminal device belongs. The state T54 is an area that stores state information indicating whether the portable telephone terminal is in an unused state, an idle state, a talking state, or a receiving state. The connection destination T55 is an area for storing a connection destination port when the portable telephone terminal device is in a call connection.

FIG. 6 is a conference group registration table storing the registration state of the conference group set by the portable telephone terminal device. 6, in the conference group registration table T60, the terminal number T62 of the portable telephone terminal device belonging to the conference group is set and registered for the conference group number T61.

FIG. 7 is a conference trunk status table for storing information on the status of the conference trunk accommodated in the telephone exchange. In FIG. 7, the conference trunk status table T70 stores, for a conference trunk number T71, status information T72 indicating whether the conference trunk is empty or closed.

Next, a method for registering a conference group according to the present invention will be described. In this embodiment, FIG.
As an example, a case will be described in which the system of the present invention is installed in a department store building, a portable telephone terminal device is lent to a group of users, and a conference group is set.

FIG. 15 is a diagram showing a lending setting screen for renting a portable telephone terminal device to a customer and setting a conference group, which is displayed on the screen of the client personal computer 203. In FIG. 15, this lending setting screen D15 is displayed in an empty conference group display section D150.
A conference group selection display section D151, an unused terminal display section D152, a terminal selection display section D153, a loan number input section D154, a certification type input section D155, a certificate number input section D156, and borrower information. An input unit D157,
Setting clear button section D158 and registration button section D159
Consists of

The empty conference group display section D150 is an area for displaying a list of conference groups in an empty state, and the conference group selection display section D151 displays an empty conference group displayed on the empty conference group display section D150. This is an area for displaying one selected conference group. The unused terminal display section D152 is an area for displaying a list of the portable telephone terminal devices 300 in the unused state, and the terminal selection display section D153 displays the unused state displayed on the unused terminal display section D152. Portable telephone terminal devices 300 selected from various portable telephone terminal devices 300
Is an area for displaying.

The lending number input section D154 is an area for inputting a reference number used for managing lending. The proof type input unit D155 is an area for inputting the type of a license, a credit card, an employee ID, or the like used by a lender to prove his / her identity,
The certificate number input unit D156 is an area for inputting a number assigned to the one used to prove his / her identity. The borrower information input unit D157 is an area for inputting information such as the name and address of a person (borrower) who borrows the portable telephone terminal device.

The setting clear button D158 is used when there is an error in the contents entered and set on the display screen D15.
This is a button used to clear this, and a registration button D159 is a button for registering the contents input and set on the display screen D15. Note that these buttons perform their functions by clicking the mouse in the same manner as a normal personal computer.

Hereinafter, a method of registering a conference group will be described. When the reception operator receives a lending request for the portable telephone terminal device from the customer, the reception operator operates the client personal computer 203 to display the lending setting screen D15. Then, one conference group is selected from the empty conference group list displayed on the empty conference group display section D150, and this is displayed on the conference group selection display section D151. Next, from the list of unused portable telephone terminal devices 300 displayed on the unused terminal display portion D152, the portable telephone terminal devices for the number to be lent are selected and displayed on the terminal selection display portion D153. Let it.

After that, the operator gives information necessary for lending, that is, a lending number, a certification type, a certificate number,
And the name and address, respectively, the lending number input section D154,
Certificate type input section D155, certificate number input section D156,
And input to the borrower information input section D157, confirm the input contents, and click the registration button D159. Then
The portable telephone terminal device 300 displayed on the unused terminal display unit D152 is allocated to the conference group selected and displayed on the conference group selection display unit D151, and is registered as one conference group.

That is, the setting information of the conference group (the setting information of the assignment of the portable telephone terminal device 300 to the conference group) is transmitted to the telephone exchange via the external interface device 111. On the other hand, this is
09 recognizes and sets and registers the corresponding conference group number area T53 and state information area T54 of the terminal state table T50 shown in FIG. 5 and the conference group registration table T60 shown in FIG. Assign conference groups.

Next, the call connection operation in the embodiment of the present invention will be described.

First, a description will be given of a conference call connection operation in the same conference group, taking as an example a case where portable telephone terminal device PS5 makes a conference call connection request in a conference group including portable telephone terminal device PS5. . 8 to 10 are sequences showing a conference call connection operation in the same conference group. First, the portable telephone terminal device PS5
When the user presses the group button 302 of the portable telephone terminal device PS5, the conference call connection request information indicating the conference call connection request by the group and the own terminal number (PS5)
Is sent to the telephone exchange (S801). On the other hand, when the telephone exchange apparatus receives this via the wireless base station 102, it detects that a conference call connection has been made (S80).
2) Then, referring to the terminal status table T50 or the conference group registration table T60 shown in FIG. 5, it is determined whether the portable telephone terminal device which has transmitted the conference call connection request information is registered in any of the conference groups. A determination is made (S803).

If the result of this determination is that the portable telephone is not registered in the conference group, processing for invalidating the conference call connection request is performed (S804). The conference group to which the terminal device belongs is extracted (S805), and then another portable telephone terminal device belonging to the extracted conference group is extracted with reference to the conference group registration table T60 in FIG. 6 (S806). ).

Next, the telephone exchange refers to the conference trunk status table T70 of FIG. 7 and determines whether there is an empty conference trunk 106 (S807). Performs a busy process (S808). On the other hand, an empty conference trunk 1
If there is 06, one of them is captured (S809),
A calling signal for calling another portable telephone terminal belonging to the same conference group extracted in step S806 is transmitted (S810).

When a user of another portable telephone terminal device belonging to the same conference group responds by pressing the group button 302 of the portable telephone terminal device, response information indicating a response request is displayed. And its own terminal number are transmitted to the telephone exchange (S811).

On the other hand, when the telephone exchange receives this via the radio base station 102, it detects a response (S81).
2) Then, with reference to the terminal status table T50 or the conference group registration table T60 shown in FIG. 5, it is determined whether or not the portable telephone terminal device that has transmitted the response information is registered in any of the conference groups ( S81
3).

If the result of this determination is that the portable telephone terminal device is not registered in the conference group, the response request is invalidated (S814). Is extracted (S815), and the correspondence with the portable telephone terminal device PS5 that has made the conference call connection request is recognized (S815).
816), the communication path switch 100 is controlled to connect the portable telephone terminal device PS5 and the portable telephone terminal device that sent the response information to the conference trunk 106 extracted in step S809 (S817).

Similarly, when a user of another portable telephone terminal device belonging to the same conference group presses the group button 302 of the portable telephone terminal device to make a response, response information indicating a response request and self The terminal number is sent to the telephone exchange (S818).

On the other hand, when the telephone exchange receives this via the radio base station 102, it detects a response (S81).
9) Then, with reference to the terminal status table T50 or the conference group registration table T60 shown in FIG. 5, it is determined whether or not the portable telephone terminal device which has transmitted the response information is registered in any of the conference groups (see FIG. 5). S82
0).

If the result of this determination is that the portable telephone terminal device is not registered in the conference group, the response request is invalidated (S821). Is extracted (S822). Thereafter, the portable telephone terminal device that has recognized the correspondence with the portable telephone terminal device PS5 that has made the conference call connection request, and transmits the response information to The communication path switch 100 is controlled to connect to the conference trunk 106 extracted in S809 (S823).

As described above, the portable telephone terminal device PS5
The user of the portable telephone terminal device belonging to the same conference group responds to the conference call connection request, so that the conference call in the same conference group is performed (S824).

Next, when the conference call connection is established as described above, when the portable telephone terminal device PS5 presses the disconnection button 306 of the portable telephone terminal device, the disconnection information indicating the disconnection request and the own terminal number (PS5) are issued. ) Is sent to the telephone exchange (S825).

On the other hand, when the telephone exchange receives this via the radio base station 102, it detects the disconnection (S82).
6) Then, by referring to the terminal status table T50 shown in FIG. 5, the connection destination port connected to the communication port of the portable telephone terminal device which has transmitted the response information is extracted, and the Recognizing that the connection is established, the conference trunk is opened (S827).
The portable telephone terminal device PS5 is released (S828). Then, the call information relating to the conference call connection is transmitted to the personal computer 203 via the external interface device 111 (S829), and a busy tone is transmitted to the portable telephone terminal devices belonging to the same conference group (S830).

Along with this, the user of the portable telephone terminal device that has heard the busy tone presses the disconnection button 306 of the portable telephone terminal device, and the disconnection information indicating the disconnection request and the own terminal number are exchanged with the telephone exchange device. (S831),
The telephone exchange detects the disconnection (S832), and thereafter,
A disconnection / release process is performed on the portable telephone terminal device that has transmitted the disconnection information to disconnect the communication path (S83).
3).

As described above, the conference call connection within the same conference group is established.

Next, the external telephone call connection operation will be described by taking as an example the case where the portable telephone terminal device PS4 makes an external telephone call connection request. FIG. 11 and FIG. 12 are sequences showing the external line connection operation. First, the user of the portable telephone terminal device PS4 operates the outside line button 3 of the portable telephone terminal device.
When 01 is depressed, external line connection request information indicating the external line connection request and the own terminal number (PS4) are transmitted to the telephone exchange (S901). On the other hand, when the telephone exchange receives this via the radio base station 102, it detects the outgoing call connection (S902), and then refers to the terminal status table T50 or the conference group registration table T60 shown in FIG. Then, it is determined whether or not the portable telephone terminal device that has transmitted the outside line call connection request information is registered in any of the conference groups (S903).

If the result of this determination is that the portable telephone is not registered in the conference group, the external telephone call connection request is invalidated (S904). The conference group to which the terminal device belongs is extracted (S905). Next, it is determined whether or not there is an empty line trunk 105 (S80).
6) If there is no empty trunk 105,
A busy process is performed (S807). On the other hand, when there is an empty line trunk 105, one of them is captured (S
908), the dial tone is output to the portable telephone terminal device PS4.
To prompt a dial operation (S909).

On the other hand, when the user of the portable telephone terminal PS4 hears the dial tone, the user presses the dial button 308 of the portable telephone terminal to dial. Then, the portable telephone terminal device PS4 sends the dialed dial number and the own terminal number (PS4) to the telephone exchange device (S910).

On the other hand, the telephone exchange receives the dial through the dial receiving process (S911), and sends the received dial to the public network 500 (S912). On the other hand, the public network 500 calls the telephone at the connection destination (S913), and notifies the telephone exchange of the response of the telephone (S914).

When the telephone exchange detects this response (S
915), the communication path switch 100 is controlled to set a communication path between the portable telephone terminal device PS4 and the captured local trunk 105 (S916), and the outside line is connected (S917).

Next, when the outside telephone call connection is established as described above, when the portable telephone terminal device PS4 presses the disconnection button 306 of the portable telephone terminal device, the disconnection information indicating the disconnection request and the own terminal number (PS4 ) Is sent to the telephone exchange (S918).

On the other hand, when the telephone exchange receives this via the radio base station 102, it detects the disconnection (S91).
9) Then, by referring to the terminal status table T50 shown in FIG. 5, the connection destination port connected to the communication port of the portable telephone terminal device which has transmitted the response information is extracted, and thereby the office trunk 105 is extracted. Is recognized, the office trunk is opened (S920), and then
The portable telephone terminal device PS4 is released (S921). Then, the call information (including the billing information) relating to the external call connection is transmitted to the personal computer 203 via the external interface device 111 (S922), and thereafter, the disconnection / connection to the portable telephone terminal device which transmitted the disconnection information is performed. A release process is executed to disconnect the communication path (S923).

In the public network 500, as is well known, the release of the line trunk 105 is recognized, and the end of the call is detected (S924). Is cut (S925).

As described above, the outside-line communication connection is performed.

Next, the extension call connection operation will be described by taking as an example a case where the portable telephone terminal device PS4 issues an extension call connection request to the portable telephone terminal device PS6.
FIG. 13 and FIG. 14 are sequences showing the extension call connection operation. First, the user of the portable telephone terminal device PS4,
When the extension button 304 of the mobile phone terminal device is pressed,
The extension call connection request information indicating the extension call connection request and the own terminal number (PS4) are sent to the telephone exchange (S701). On the other hand, when the telephone exchange apparatus receives this via the radio base station 102, it detects the transmission of the extension call connection (S702), and then refers to the terminal state table T50 or the conference group registration table T60 shown in FIG. Then, it is determined whether or not the portable telephone terminal device that has transmitted the extension talk connection request information is registered in any of the conference groups (S703).

If the result of this determination is that the mobile phone has not been registered in the conference group, processing for invalidating the extension call connection request is performed (S704). The conference group to which the terminal device belongs is extracted (S705). Then, a dial tone is transmitted to the portable telephone terminal device PS4 to prompt a dial operation (S706).

On the other hand, when the user of the portable telephone terminal device PS4 hears the dial tone, the user presses the dial button 308 of the portable telephone terminal device to dial (S).
707). Then, the portable telephone terminal device PS4 sends the dialed dial number and the own terminal number (PS4) to the telephone exchange device.

On the other hand, the telephone exchange receives the dial by the dial receiving process (S708), and recognizes a connection request to the portable telephone terminal device PS6 (S70).
9), referring to the terminal state table T50 shown in FIG. 5, it is determined whether or not the portable telephone terminal device PS6 is in an idle state (S710).

As a result of this judgment, the portable telephone terminal device PS
6 is in the closed state, the portable telephone terminal device PS4
(S711), and calls the portable telephone terminal PS6 when it is idle (S71).
2).

In response to this call, the user of the portable telephone terminal PS6 operates the extension button 3 of the portable telephone terminal.
When a response is made by pressing "04", response information indicating the response request and its own terminal number are sent to the telephone exchange (S71).
3).

On the other hand, when the telephone exchange receives this via the radio base station 102, it detects a response (S71).
4), the communication path switch 100 is controlled to set a communication path between the portable telephone terminal apparatus PS4 and the portable telephone terminal apparatus PS6 (S715), and to establish an extension telephone connection state (S7).
16).

When the user of the portable telephone terminal device PS6 presses the disconnection button 306 of the portable telephone terminal device in the case where the extension telephone call connection is established as described above, the disconnection information indicating the disconnection request and the own terminal are transmitted. The number (PS6) is sent to the telephone exchange (S717).

On the other hand, when the telephone exchange receives this via the radio base station 102, it detects the disconnection (S71).
8) Then, referring to the terminal status table T50 shown in FIG. 5, the portable telephone terminal device P which has transmitted this response information
By extracting the connection destination port connected to the call port in S6, it is recognized that this is connected to the portable telephone terminal device PS4, and the call path and the portable telephone terminal device PS6 are opened (S719). ). Thereafter, the call information related to the extension call connection is transmitted to the external interface device 111.
Is transmitted to the personal computer 203 (S720), and then a busy tone is transmitted to the portable telephone terminal device PS4 to prompt disconnection (S721).

Then, the user of the portable telephone terminal device PS4 presses the disconnection button 306 of the portable telephone terminal device, and sends the disconnection information indicating the disconnection request and the own terminal number (PS4) to the telephone exchange device. Then, the telephone exchange apparatus detects this (S722), performs release / disconnection processing for the portable telephone terminal apparatus PS4 (S723), and releases the extension communication connection.

As described above, the extension call connection is established.

Next, a method of releasing a conference group according to the present invention will be described. In this embodiment, FIG.
As shown in the figure, when the system of the present invention is installed in a department store building, a portable telephone terminal device is lent to a group of users, and a conference group is set, the conference group is canceled. Will be described as an example.

FIG. 16 is a diagram showing a return settlement screen for releasing a conference group after lending a portable telephone terminal device to a customer, which is a client personal computer 203.
Is displayed on the screen. In FIG. 16, the return settlement screen D16 includes a lending number input section D160, a charge calculation button section D161, and a setting clear button section D16.
2 and a rental fee display section D163.

The lending number input section D160 is an area for inputting the same management number as the number input to the lending number input section D154 on the lending setting screen D15 in FIG. The charge calculation button section D161 is a button for calculating the rental fee of the portable telephone terminal device, and is a button for clearing the rental, that is, clearing the conference group registration. Note that these buttons perform their functions by clicking the mouse in the same manner as a normal personal computer. Then, the rental fee display section D163 is an area for displaying the rental fee, and displays the total amount of the rental fee and the call fee for the outside line call.

Hereinafter, a method in which the user who has borrowed the portable telephone terminal device returns the portable telephone terminal device and releases the conference group will be described. When the user of the portable telephone terminal device returns the portable telephone terminal device, the reception operator operates the client personal computer 203 to display the return settlement screen D16. Then, the user inputs the lending number to the lending number input section D160, and then clicks the charge calculation button D161. Then, the conference group corresponding to the rental number is recognized, and the rental fee for the portable telephone terminal device belonging to this conference group and the total amount of the external line call are displayed on the rental fee display section D163. I do.

When the loan settlement is completed, the operator clicks the setting clear button D162. Then, the conference group corresponding to the rental number input to the rental number input section D160 is released, and the portable telephone terminal devices belonging to this conference group are set in an unused state.

That is, the release information of the conference group (the release information of the portable telephone terminal device 300 for the conference group) is transmitted to the telephone exchange via the external interface device 111. On the other hand, this is
09 recognizes, according to the received information, the corresponding state information area T54 of the terminal state table T50 shown in FIG.
Is set to unused, and the allocation of the conference group set in the conference group registration table T60 shown in FIG. 6 is deleted to clear the setting of the conference group. At this time, as shown in FIG.
170, a call time L171 including a call start time and a call end time, a call content L172, a calling terminal number L17
3. A call detail list including the destination L174 and the billing (call fee) L175 may be output to inform the user of the details.

As described above, the method of canceling the conference group is performed, and the state is returned to the initial state.

In this embodiment, the case where the portable telephone terminal device is lent to the customer of the department store has been described as an example. However, the present invention can be utilized in various other ways.

For example, this telephone exchange system is installed on a construction site, and an operator (site manager)
It is clear that the use of 00 makes it possible to simultaneously call the portable telephone terminal devices belonging to an arbitrary conference group and to perform a broadcast notification by connecting the conference call. According to this, in a vast construction site, It can also be used to give work instructions to work teams appropriately.

[0074]

According to the present invention, for example, by lending a portable telephone terminal device, an individual in the group owns the portable telephone terminal device, and by using this portable telephone terminal device, the entire group is used. In this way, it is possible to easily communicate with each other, and it is possible to easily communicate within a group of a plurality of people on a vast site such as an event site, a skiing area, and a department store.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing the concept of a state in which a system including a telephone exchange device and a LAN according to the present invention is installed.

FIG. 3 is a plan view of a portable telephone terminal device showing an embodiment of the present invention.

FIG. 4 is a panel diagram of the multifunctional telephone according to the embodiment of the present invention.

FIG. 5 is a terminal status table showing the embodiment of the present invention.

FIG. 6 is a conference group registration table showing the embodiment of the present invention.

FIG. 7 is a conference trunk status table showing the embodiment of the present invention.

FIG. 8 is a sequence (part 1) showing a conference call connection operation in the same conference group.

FIG. 9 is a sequence (part 2) showing a conference call connection operation in the same conference group.

FIG. 10 is a sequence (part 3) illustrating a conference call connection operation in the same conference group.

FIG. 11 is a sequence (part 1) showing an outside-line call connection operation.

FIG. 12 is a sequence (part 2) illustrating an external call connection operation.

FIG. 13 is a sequence (No. 1) showing an extension call connection operation.

FIG. 14 is a sequence (part 2) showing an extension call connection operation.

FIG. 15 is a diagram showing a lending setting screen showing the embodiment of the present invention.

FIG. 16 is a diagram showing a return and settlement screen showing the embodiment of the present invention.

FIG. 17 is a diagram showing an example of a call charge list showing the embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 communication path switch 101 wireless interface device 102 wireless base station 103 multifunctional telephone interface device 105 central office trunk 106 conference trunk 107 digital line interface device 109 central control device 110 main storage device 111 external interface device 200 file server 203 client personal computer 205 Router 300 portable telephone terminal device 400 multifunctional telephone 500 public network

Claims (1)

[Claims] 1. A telephone exchange device accommodating a plurality of portable telephone terminal devices, selects a plurality of portable telephone terminal devices from among the plurality of portable telephone terminal devices, and sets them in one conference group. A conference group setting means for setting a communication path, a communication path switch for freely setting a communication path, a conference trunk housed in the communication path switch, and providing a conference call by mixing input voice signals; When a conference call connection request including information indicating the portable telephone terminal device is received from the portable telephone terminal device belonging to, the conference trunk is captured and the conference to which the portable telephone terminal device belongs is received. Conference group recognizing means for recognizing a group, and all other portable telephone terminals of the portable telephone terminal device which has made the conference call connection request among the recognized conference groups. Extracting means for extracting the location, calling means for simultaneously calling all of the portable telephone terminal devices extracted by the extracting means, and detecting a response from the called portable telephone terminal apparatus, A portable telephone terminal device that has requested the conference call connection, and a telephone line control unit that controls the telephone line switch so as to connect the portable telephone terminal device that has responded to the portable telephone terminal device. Telephone exchange.