JP2002232577A - Phone conference system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a phone conference system that attains simultaneous conversation by surely grasping participants so that parties participating in a conference of which is inhibited never take part in the conference through the use of an UnPBX and the recognition of caller IDs by an exchange. SOLUTION: A voice reply board 6 stores telephone numbers of destinations of lines sent from a host phone, can make simultaneous connection of lines receiving calls to member pones, identifies a caller telephone number when a member phone having made a line connection within a prescribed time after interruption of its line transmits a call signal, and connects the line from the member phone when the telephone number is equal to the telephone number of the member phone having made the line connection. After the line connection, exchange connection is made to the lines received by the voice reply board 6 in a room 16 under the instruction from the management section 18, voice signals from the phones are composited, and returned to each phone so as to allow each phone to hear the synthesized voice.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a telephone conference system for holding a conference by telephone such as a portable telephone, a simplified portable telephone (PHS), and a fixed telephone.

[0002]

2. Description of the Related Art Conventionally, as a telephone conference system, there is an INS telephone conference service provided by East Nippon Telegraph and Telephone Corporation (NTT East). In this service, if the convenor of the conference registers the date and time of the conference and the telephone numbers of the conference participants in advance, the caller and the participants are called from the conference center at the specified date and time. Is a service that can connect up to 30 locations at the same time. This simultaneous connection service is NTT
Although simultaneous connections will be made via the East Japan operator, the caller must proceed with the conference by assuming that the called participant is a true participant. Even if I was listening, I didn't notice.

[0003] Generally, a private branch exchange (PBX) for a telephone is used.
Currently, digital PBXs are currently the mainstream, but since ICs without a storage function are used for exchange connection, even if processing is reliable, the PBX itself will be able to exchange connections between extension telephones, It has only basic functions such as exchange connection with a general telephone. Therefore, exchange connection or not depending on the caller telephone number could not be performed.

On the other hand, recently, CTI (Computer Telephony) systems have become widespread, and attempts have been made to use telephone functions with personal computers and the like. This aims at integrating a voice network such as a telephone network with a data network such as a LAN. Specifically, a telephony board is mounted on a personal computer, and the personal computer is used as a telephone and an exchange. The exchange (PBX) in this personal computer is called UnPBX, and the personal computer plays the role of the exchange. The UnPBX is a server equipped with an audio processing board and operating as a simple PBX, and has a storage function using a hard disk of a personal computer.

[0005]

SUMMARY OF THE INVENTION In view of the above facts, the present invention is a telephone conference system,
It is an object of the present invention to provide a telephone conference system in which a caller ID can be recognized by a switchboard to make sure that a participant who should not participate does not participate in a conference so that the participants can be surely grasped and a conversation can be performed simultaneously.

[0006]

According to the first aspect of the present invention, there is provided a telephone conference system which enables a computer system to hold a conference by telephone, and receives a push tone signal and a voice signal transmitted from each telephone. A voice response unit that transmits a push tone signal and a voice signal to each telephone, stores and identifies the ID of the source and destination of the push tone signal, and records and reproduces voice according to the push tone signal. Having a plurality of conference rooms, the ID
A voice synthesizer for switching the line received by the voice response unit to a designated telephone and synthesizing a voice signal from each telephone received by the voice response unit in the conference room. A managing unit that manages a state and receives line information from each telephone from the voice response unit, and sends a command regarding a line switching connection to the voice response unit according to the state of the voice synthesis unit. The voice response unit stores the ID of the transmission destination of the line transmitted from the host telephone, and can simultaneously connect to the plurality of member telephones for the transmitted line, and within a predetermined time after the line is disconnected thereafter. When a call is received from the member telephone connected to the line, the source ID is identified and if the ID is the ID of the member telephone connected once, Telephone conference system to connect the line from the serial members phone, consisting of.

According to the first aspect of the present invention, a plurality of telephone lines are connected to the voice response unit, and push tone signals and voice signals from a plurality of telephones are received through the plurality of telephone lines. After the reception, the management unit receives the line information from each telephone from the voice response unit and sends a command regarding the switching connection of each line to the voice response unit according to the state of the voice synthesis unit. The instructions also include an indication of which conference room each line should go to. In the designated conference room, voice signals of a plurality of lines are synthesized and switched and connected.
The synthesized voice signal is transmitted from the voice response unit to each telephone. The synthesized voice signal flows to each person's telephone.
That is, the speech of each person's telephone is speech-synthesized, and the synthesized speech is returned to all the lines of each person, so that the speech of a plurality of speakers can be heard on each person's telephone.

[0008] The voice response unit stores an ID of a transmission destination of a line transmitted from the host telephone, and can simultaneously connect to the plurality of member telephones to the transmitted line. Thereafter, the line is disconnected, and after the line is disconnected, if a call is received from the once-connected member telephone within a predetermined time, the ID of the source is identified, and the ID corresponds to the once-connected member telephone. In the case of ID, the line from the member telephone is connected. The voice synthesizing unit voice-synthesizes the plurality of lines received by the voice responding unit and switches and connects them. When they are switched, they can talk to each other. If the source ID is not the ID of the member telephone connected to the line, the voice response unit does not match the ID and does not connect the line. Therefore, the line of the member telephone having the mismatched ID is not switched and connected even in the voice synthesizing section.

The voice response unit reproduces necessary voice guidance and records voice according to the received push tone signal, a command from the management unit, and the transmitted push tone signal.

The above-mentioned telephone includes a portable telephone, a simplified portable telephone (PHS), and a general fixed telephone.

According to a second aspect of the present invention, the voice response unit includes:
A push tone signal from the host telephone can be received to record a voice for the member telephone, and when one or more member telephones are designated from the host telephone, the voice response unit is connected to the designated member telephone. 2. The telephone conference system according to claim 1, wherein the voice response unit can reproduce the recorded voice when a line is connected.

According to the second aspect of the present invention, when the voice response unit receives a push tone signal from the host telephone, the host telephone outputs a voice (message) to the designated member telephone. Can be. When one or more member telephones are designated by the host telephone, when the voice response unit connects to the designated member telephone, the member can hear the recorded message from the organizer.

According to a third aspect of the present invention, there is provided the telephone conference system according to the first aspect, further comprising a recording unit for recording information on the exchange connection.

According to the third aspect of the present invention, the recording section automatically records the information of the exchange connection.

According to a fourth aspect of the present invention, there is provided the telephone conference system according to the third aspect, further comprising a device capable of viewing information recorded in the recording section in real time.

According to the present invention, the information of the switching connection can be viewed in real time.

According to a fifth aspect of the present invention, the voice response section comprises:
A mobile phone having a telephone function and capable of transmitting commands and information input from the screen via the Internet line can receive commands and information input from the screen via the Internet line, and 2. The telephone conference system according to claim 1, wherein the telephone conference system according to claim 1 is capable of receiving a line information corresponding to the received command or information and transmitting a command relating to line switching connection to said voice response unit.

According to the fifth aspect of the present invention, a command or information is inputted from a screen of a portable telephone which can use a telephone line and an Internet line and transmitted to a voice response unit through the Internet line. The voice response unit receives the transmitted command or information. The management unit receives the received command and the line information corresponding to the information from the voice response unit, and sends the voice response unit a command relating to the line switching connection.

According to a sixth aspect of the present invention, there is provided the telephone conference system according to the fifth aspect, wherein the commands and information that can be received by the voice response unit include information for calling a conference or calling a member telephone. .

According to the sixth aspect of the present invention, information such as telephone number input, group call, and message recording required for convening a conference or calling a member telephone can be transmitted from the portable telephone through the Internet line.

[0021]

According to the first aspect of the present invention, a plurality of persons can talk at the same time by telephone, and when the host (host) of the conversation calls a participant (member) by telephone, the host calls once by telephone. Since the conversation can be started after confirming that the other party is the member, eavesdropping on the conversation can be prevented, and the security of the conversation can be ensured.

According to the second aspect of the present invention, the host can send a message to the member, and the member can hear the message when receiving a call from the host. The host does not need to send a message to each member individually, and if one message is sent, the message is sent to all members, which is convenient.

According to the third aspect of the present invention, the status of the switching connection can be managed.

According to the present invention, the information of the switching connection can be managed in real time.

According to the fifth aspect of the present invention, if a mobile phone that can use a telephone line and an Internet line is used, a voice response unit can be used while checking instructions and information input from the mobile phone on the screen of the mobile phone. The command and information can be transmitted to the voice response unit reliably and with sufficient time.

According to the sixth aspect of the present invention, since a conference call and a member telephone call can be made while viewing the screen from the mobile phone through the Internet line, the conference call and the like can be performed reliably and with a sufficient time.

[0027]

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

In this embodiment, an example will be described in which a telephone conference is carried out by calling a telephone conference system from a portable telephone, a simplified portable telephone (PHS), or a general fixed telephone (hereinafter referred to as "telephone").

FIG. 1 shows a telephone conference system 2 according to this embodiment.
FIG. 2 is a block diagram showing a functional configuration of the first embodiment. Server 4 is N
Public network such as TT (Nippon Telegraph and Telephone Corporation) or TTNet (Tokyo Telecommunication Network Corporation) and ISDN15
00 (23 lines), and finally connected to the user's telephone via a telephone line.

The server 4 includes a voice response board 6, a voice synthesis board 8, a recording unit 10, and a display operation unit 12. The display unit 20 is connected to the server 4 via a LAN.

The voice response board 6 is connected to the user's telephone via a telephone line, and has a function of a transmission / reception unit for receiving telephone communication, a push tone signal from the user, and transmitting to the user. Furthermore, voice response board 6
Also has the function of a voice guidance unit that records and reproduces voice according to the received and transmitted push tone signal and line signal.

The voice response board 6 has a plurality of departments in which the simplified language 14 is stored. The simple language 14 calls various functions of the voice / fax board by calling a simple function.
This is a language that can be specified in the ll format. The simple language 14 is a language having the above-mentioned push-tone receiving / sending function and voice recording / reproducing function, and can easily use the functions of the voice response board 6. The simple language 14 also has a function of activating an external program from the simple language and receiving the execution result, so that a large-scale program can be constructed by freely combining with a database or various application programs, It improves the productivity of system construction.

The simple language 14 stores the telephone number of the transmission destination of the transmission line and outputs the ID from the received line signal.
It has a function of storing the sender's telephone number (identification display), and a function of comparing the stored destination telephone number with the incoming telephone number. The simple language 14 can simultaneously connect to a plurality of destination telephone lines for one transmission line. However, since the simple language 14 is connected to the calling line and the simple language 14 is also connected to a plurality of destination telephone lines, the simple language 14 itself directly exchanges the calling line with a plurality of destination telephone lines. It is not a part that connects and does not exchange voice signals between the calling line and the destination telephone line. It is the room 16 of the voice synthesizing board 8 described later that exchanges voice signals by direct exchange connection.

The voice synthesis board 8 is connected to the voice response board 6, and has a plurality of rooms 16. Each room 1
Numeral 6 denotes a section for exchanging a signal transmitted from the voice response board 6 to a designated telephone or for exchanging the signal. Each room 16 has a function of voice-synthesizing an audio signal transmitted from each telephone and connecting to each telephone by exchange.
Further, during the exchange connection, each room 16 can receive a push tone signal from the telephone of the host or member, and can exchange connection with the telephone newly designated by the received push tone signal. When a call is made to a newly designated telephone, the voice response board 6 makes a call instead, but the call is made using a line other than the line currently in use. Although the number of telephones that can be exchanged and connected together at a certain time differs depending on each room 16, each room 16
Both are determined to be up to a predetermined number.

The voice synthesizing board 8 further has a management unit 18. The management unit 18 has a role of managing the situation of each room 16 and receiving a signal from the simple language 14 of the voice response board 6 and transmitting an instruction signal to the simple language 14 according to the managed situation. The status of each room 16 is, for example, how many telephones the room 16 is currently exchange-connected and how many other telephones can be exchange-connected. Further, when the organizer's telephone arrives at the server 4 for the first time, a specific room for a conference is secured under the instruction of the management unit 18.

The recording unit 10 is connected to the voice response board 6 and the voice synthesis board 8, and mainly records log information. In other words, the recording unit 10 receives the information from the simplified language 14 and the information from the management unit 18 and logs in at the time of XX and logs in, and conducts a telephone conference for ○ minutes in the room of the limited number of people. Is accumulated. "

The display operating unit 12 is connected to the recording unit 10 and displays the log information of the recording unit 10 by activating a specific language with specific software. By starting a specific language and executing a specific application, the log information comes out in the form of HTML.

The display unit 20 is connected to the server 4 via a LAN, and receives log information of the display operation unit 12. The display section 20 is a personal computer management / setting screen.
The log information in HTML format from Step 2 is displayed on the screen with an Internet browser and viewed. Humans manage and set the server 4 while viewing this screen. Changes in the number of telephones (capacity) that can be exchanged and connected at the same time in each room 16 and setting of the time during which a plurality of telephones can be exchanged and connected at the same time are also performed through this screen. Since the log information can be viewed on the screen of the display unit 20 in real time, the current status of the server 4 can be well understood. The user of the telephone conference system can set the above-mentioned number of participants and the conference time.

The processing operation of the above configuration will be described as the operation of this embodiment.

The host makes a telephone call from a telephone through a public network line to connect to the server 4. In the server 4, the simple language 14 of the voice response board 6 receives the call signal. Thereafter, a signal for inquiring about the status of each room 16 arrives at the management unit 18, and the management unit 18 outputs a signal indicating the exchange connection destination of the line signal to the simplified language 14 according to the status of each room. At this stage, the room 16 in which the meeting is held has a reserved form.

The simple language 14 calls the member's telephone designated by the host. The simplified language 14 stores the host's caller telephone number and the telephone number of this member telephone specified by the host. When a call from the host arrives at the member, a predetermined message (described later) flows and the host or member disconnects the line.

After the call from the host to the member is temporarily disconnected, the member calls the host within a predetermined time (for example, 5 minutes). A member makes a telephone call from a telephone through a public network such as an NTT or TTNet line and connects to the server 4. In the server 4, the simple language 14 of the voice response board 6 receives the call signal. The simple language 14 recognizes the telephone number of the member telephone that has sent out,
Verifies that this phone number matches the phone number of the member phone previously specified by the host. As a result of the comparison, if they match, the simplified language 14 connects the line from the member telephone. If they do not match, the line is not connected.

If they match, the line information is sent from the simplified language 14 to the management unit 18, and the management unit 18 performs switching and connection of the line in the designated room when the above-mentioned host calls the member. An instruction to instruct is issued to the simple language 14. In the simplified language 14, a signal is sent to the room 16 to which the line is switched and connected according to the instruction, and the designated room 16
The line is switched and connected. That is, the member's line is switched and connected to the host's line. Since the room 16 is a conference room, voice signals of a plurality of lines are synthesized and switched and connected. The synthesized voice signal is output to the simplified language 14 and transmitted from the simplified language 14 to each telephone.

The log information during this period is sent from the simplified language 14 and the management unit 18 to the recording unit 10, and the log information can be viewed in real time on the display unit 20 via the display operation unit 12.

Based on the above hardware configuration, a specific procedure in which the processing operation proceeds will be described. FIGS. 2 to 5 are flowcharts showing the detailed processing operation of the server 4 of the telephone conference system 2 of the present embodiment. In the flowchart, a square frame with a pointed portion is a message played as a voice.

The caller in the telephone conference is called "host (organizer)". A person who is called and participates is referred to as a “member (participant)”.

First, FIG. 2 shows a start menu of the organizer. The organizer calls the server 4. When the push tone signal is received from the host, the server 4 checks whether the conference room (room) 16 is vacant (step 30). If the conference is being used, a message that the conference room is being used is notified by a message (step 32), and the organizer disconnects the line. If not, it is checked whether there is a caller notice (step 34). If you do not have caller notification,
A message is sent to notify the caller and redial (step 36), and the line is disconnected. If you have caller notifications,
The opening message flows (step 38) and asks whether to record the message (step 40). This message is a message that the organizer sends to the participants. When recording, the mode shifts to a "recording A-1" mode (described later). If no recording is to be made, a message prompting entry of the participant's telephone number is played (step 42).

When the telephone number of the participant is entered (step 44), if the capacity of the conference room 16 has been exceeded, the menu is shifted to the "full seat number Er-1" menu (details are omitted). If the input has been properly made, the participant is called (step 50).

When the call is connected, the organizer is informed that the telephone should be temporarily disconnected and wait for a call from the participant (step 52), and the organizer hangs up the telephone. The participant who has received the call shifts to a “participant” mode (described later).

If the telephone is not connected, it is determined whether there is no answer or all or no answer (step 54). If there is no answer (step 58), to call again from the beginning, go to the "A-2" mode. The mode shifts to the "A-3" mode when calling the current partner again. If no response is received at step 54, a message is issued to hang up the telephone and wait for a call from the participant (step 56), and the call is terminated.

The upper part of FIG. 3 shows a recording menu of the organizer. The routine from the "recording A-1" mode in FIG. 3 is shown. After the dial tone, the organizer records the message (step 62). Since the participants are called, "A-
2 "mode. The “A-2” mode leads to step 42 in FIG.

The lower part of FIG. 3 shows the start menu of the participants. If the participant picks up the phone call from the organizer, an opening message will be played and the call will be halted once and the caller will be notified within 5 minutes. Step 6
0). Then hang up.

FIG. 4 shows a calling menu of a participant. A participant calls the server 4. When a call signal is received from the participant, the server 4 makes a call of the participant within a predetermined time after the organizer calls (5 in this embodiment).
(Step 7)
4). If the predetermined time is exceeded, the user is notified (step 76) and the line is disconnected. If it is within the specified time,
It is determined whether or not the caller number of the participant is the same as the telephone number when the organizer called (step 78). If the numbers are different, it is notified (step 80) and the line is disconnected. If the numbers are the same, enter the conference room (step 84).

FIG. 5 shows a basic menu. During the conference, when the basic menu is called, a message for starting the basic menu flows (step 100). The number of participants in the current conference is notified (step 102), and if there is a non-participation message, the number of non-participation messages is notified (step 104). Call a new participant, hang up an existing participant, listen to a message from a non-participant,
A question is asked as to whether to register as a group, confirm current participants, or return to the conference (step 106).
If there is no non-participation message in step 102, the process proceeds to step 106.

To call a new participant, enter the telephone number of the new participant (step 108), and when it is full, go to the "Er-2" menu (detailed description is omitted), and the number of seats is available. Then, the mode shifts to the “call new participants [1]” mode (detailed description is omitted).

If the current participant is to be disconnected, the procedure for disconnecting the participant is performed (step 110), and if there is a participant, the mode is shifted to the "participant disconnected [2]" mode (detailed description). Is omitted).

When listening to the message of a non-participant, the number of non-participation messages is notified (step 114), and the non-participation message is reproduced (step 116). If the message is to be heard again after the reproduction, the process returns to step 116 (step 118). If the reproduced message is to be deleted (step 118), the message is deleted (step 120).

To register a group, refer to “Group Registration
[4] mode (detailed description is omitted).

When confirming the current participant, the current participant is notified (step 121).

When returning to the conference, a message to that effect flows, and the process returns to the conference (step 122).

Since a plurality of conference rooms can be set, a plurality of groups can conduct a telephone conference at the same time. By using the above flow chart, the present invention can be specifically implemented,
With the above functions, the organizer can accurately grasp the participants, prevent unrelated persons from eavesdropping on the contents of the conference, and secure the security of the conference. In the present embodiment, the caller's telephone number is used as the ID, but a password can be used together with the caller's telephone number, or only the password can be used.

It is to be noted that the volume of the call can be adjusted during the conference. It is also possible for the organizer to give the right to speak only to a specific participant and make the person speak. In this case, other participants cannot speak while this particular person is given the floor. In addition, since a plurality of conference rooms can be set, a plurality of groups can have a telephone conference at the same time.

According to the present embodiment, exchange connection can be performed without intervention of an operator, a new participant can be called during a conference, and the conference system can be used around the clock. In addition, when the user uses this conference call system, at the start of the use of the conference system,
A password is required, but initial registration is not required and can be used from any phone.

Hereinafter, a modified example of the present embodiment will be described.
In the above-described embodiment, an example has been described in which the button of the telephone is operated to transmit a push tone signal in accordance with the voice message emitted by the voice response board 6 to call a conference or call a member telephone. An example in which the operation is performed by a mobile phone through the Internet line will be described. FIG. 6-8 shows an input screen of the mobile phone when a command and information are transmitted to the voice response board 6 and various settings are made from the mobile phone having a telephone function and capable of transmitting commands and information via the Internet line. It is shown.

FIG. 6 shows an input screen for the “organizer: start” menu. First, the user inputs an ID and a password for using the Internet line. Items that can be set are: Have a meeting 2. Message registration Group registration 4. It is an address book.

In the case of “hold a meeting”, “1.
Select "Conference". Then, select "1. Specify a participant by entering a phone number", or "2. Call a group" when participants are registered as a group, or "3. Call a pre-call partner". I do. FIG. 7 shows the subsequent selection screen. 1. If is selected, enter the participant's phone number (or abbreviated number). After input, press the "Call" button to call.
2. If you select, enter the group number. When you enter a group number, a list of members belonging to that group appears. If you want to be a member in the list,
Press the "K" button and press the "Call" button to call it. Uncheck the check boxes for the members to be excluded from the list, and then press the "OK" button and the "Call" button. 3. When "" is selected, the name of the participant to be called appears, so when calling, the "call" button is pressed.

In the case of "message registration", select "2. message registration" on the screen. Thereafter, the user selects either “1. Record new message” or “2. Change recorded message”. FIG. 8 shows the subsequent selection screen. 1. If you select, press the record button, then record the message and press #. 2. If you select, enter the message number you want to change and record a replacement message.

In the case of “group registration” and “address book”, select a desired selection from the selection screen and proceed in the same manner as in “1. Hold a meeting” and “2. Message registration” described above. Go.

The voice response board 6 can receive commands and information input from the screen of the portable telephone, and the management unit 18 receives line information from the voice response board 6 in accordance with the received commands and information. Sends a command to the board 6 regarding switching of the line.

As described above, by inputting and transmitting instructions and information through the screen of a mobile phone that can use the Internet line, the input information can be transmitted while confirming the information on the screen, so that errors in operation are less likely to occur. It is possible to perform reliable and affordable operation and information transmission.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a functional configuration of a telephone conference system.

FIG. 2 is a flowchart showing a start menu of the host in the processing operation of the server.

FIG. 3 is a flowchart showing a recording menu of the organizer in the upper part and a start menu of the participant in the lower part in the processing operation of the server.

FIG. 4 is a flowchart showing a participant's call menu in the processing operation of the server.

FIG. 5 is a flowchart showing a basic menu in the processing operation of the server.

FIG. 6 is a diagram showing an input screen of a “organizer: start” menu of the mobile phone.

FIG. 7 is a view showing an input screen of the mobile phone after selecting 1 in FIG. 6;

FIG. 8 is a diagram showing an input screen of the mobile phone after selecting 2 in FIG. 6;

[Explanation of symbols]

 2 Teleconference system 4 Server 6 Voice response board 8 Voice synthesis board 10 Recording unit 12 Display operation unit 14 Simple language 16 Room 18 Management unit 20 Display unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5K015 AF05 JA01 5K024 AA52 AA62 CC14 DD01 GG05 5K049 AA07 AA10 BB12 BB19 CC11 FF40 GG09 GG18

Claims (6)

[Claims] 1. A telephone conference system for enabling a telephone conference by a computer system, comprising receiving a push tone signal and a voice signal transmitted from each telephone and transmitting a push tone signal and a voice signal to each telephone. And the source of the push tone signal,
It has a voice response unit that stores and identifies the ID of the transmission destination and records and reproduces voice according to the push tone signal, and has a plurality of conference rooms, and the voice response unit receives the voice on the telephone specified according to the ID A voice synthesizing unit for switching and connecting the connected lines and synthesizing voice signals from the respective telephones received by the voice responding unit in the conference room; and And a management unit for receiving a line information from the control unit and sending a command relating to a line switching connection to the voice response unit in accordance with the state of the voice synthesis unit. The ID of the transmission destination is stored, and a plurality of member telephones can be simultaneously connected to the outgoing line, and after the line is disconnected, the line is connected within a predetermined time. If an incoming call from the members phone, the phone conference system that connects a line from the members telephone when the ID member phone the ID to identify the ID of the originator and the once line connection. 2. The voice response unit may receive a push tone signal from the host telephone and record a voice for a member telephone, and when one or more member telephones are designated from the host telephone, 2. The telephone conference system according to claim 1, wherein when the voice response unit is connected to the designated member telephone line, the voice response unit can reproduce the recorded voice. 3. The telephone conference system according to claim 1, further comprising a recording unit for recording information on the exchange connection. 4. The telephone conference system according to claim 3, further comprising a device capable of visually checking information recorded in said recording section in real time. 5. The voice responding unit, comprising: a mobile phone having a telephone function and capable of transmitting a command or information input from a screen via an Internet line; and a command input from a screen via an Internet line. 2. The telephone conference system according to claim 1, wherein the manager can receive line information corresponding to the received instruction or information, and can send an instruction relating to line switching connection to the voice response unit. 6. The telephone conference system according to claim 5, wherein the commands and information that can be accepted by the voice response unit include information for calling a conference or calling a member telephone.