JPH09162988A - Incoming call transfer control method, incoming call transfer system, and incoming call transfer controller and exchange used in the system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain a speech with a called party in addition without interrupting a call during speech by receiving information relating to incoming call transfer by a called party equipment, informing the information to the called party, receiving an additional request from the called party and sending the received call to an exchange. SOLUTION: A caller device 71 makes a call and it is received by an exchange 72 and the incoming call is informed from the exchange 72 to a line controller 73. Then the line controller 73 transfers the incoming call to a prescribed incoming call transfer destination and the information relating to the incoming call transfer is transferred to a called device 79. Then the called device 79 monitors a speech of the incoming call from a speaker of a telephone set 78. Then the called device 79 enters an additional request and sends the entered additional request to the exchange 72 via the incoming call transfer device 73 and the exchange 72 executes the processing in response to the additional request. Thus, the speech in addition to the called party is conducted without interrupting the current speech.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when a call is received when the called party is absent, does not connect the incoming call to the called party's telephone terminal, but instead sends it to another subscriber who is registered as a forwarding destination in advance. The present invention relates to an incoming call transfer control method, an incoming call transfer control device, and an incoming call transfer system for transferring and recording to a voice mail system.

[0002]

2. Description of the Related Art An incoming call transfer function in a telephone system means transfer of all incoming calls, or transfer of calls to busy or non-answering, depending on the situation where the subscriber is present. It is a function that allows a person to answer an incoming call. Furthermore, in recent years, voice mail systems have been developed. According to the voice mail system, when the subscriber is absent at the time of receiving the call or the subscriber is busy, the incoming call is transferred to the voice mail system, and the voice mail system sends a response message by the automatic answer function. The message is sent to the caller, the caller's message is recorded, and the subscriber is notified that there is an incoming call. The subscriber can later hear the recording from the voice mail system.

[0003]

In the conventional call transfer system as described above, the called party receives an incoming call with high urgency while using (busy) a telephone call with low urgency. Sometimes, the function of transferring to another subscriber who is registered as a transfer destination in advance or transferring to a voice mail system for recording works, and the called party responds to an incoming call with high urgency. There is a problem that you can not respond immediately.

According to the present invention, when a called party having the call transfer function is present, an incoming call is received, and even when the called party is transferred, the called party immediately responds to the incoming call according to the judgment of the called party. The purpose is to be able to.

[0005]

FIG. 1 shows a first procedure of a call transfer control method according to the present invention. In the procedure of FIG. 1, in step 1, a caller device makes a call, and in step 2, the above-mentioned call is received by the exchange, and this incoming call is notified to the call transfer control device. Then, the call transfer process is performed. Next, in step 4, it is judged whether or not the call transfer function is registered for the called party of this incoming call, and if it is not registered, the processing is terminated. If it is determined in step 4 that it is registered, in step 6 information regarding call transfer is transferred to the called party. When the called device receives the above-mentioned information regarding call transfer, in step 7,
This is notified to the called party. In addition, in the procedure of FIG.
Step 4 of determining the presence or absence of registration may be omitted as a basic procedure of the present invention.

FIG. 2 shows a second procedure of the call transfer control method according to the present invention, which is performed following the first procedure of FIG. In the procedure of FIG. 2, in step 11, an addition request is input from the called party device,
In step 12, the input addition request is transmitted to the call transfer control device. In step 13, the call transfer control device transmits the above addition request to the exchange, and in step 14, the exchange executes the process according to the addition request.

FIG. 3 shows the basic configuration of the call transfer system according to the present invention. In FIG. 3, 20, 2
1 ... 2n is a telephone terminal, 30 is an exchange, 31 is an incoming call notification means, 32 is an addition request execution means, 40 is a notification service registration means, 41 is an incoming call transfer control means, 42 is an incoming call information transmission means, and 43 is A switching service addition requesting means, 50 a transfer service requesting means, 51 an incoming call information notifying means, 52 an addition requesting means, 53 a telephone terminal of a called party, and 60 a related service performing means.

The call from the telephone terminal 20 of the calling party is exchange 3
When the incoming call reaches 0, the incoming call notification means 31 of the exchange 30 notifies the incoming call transfer control means 41 in the incoming call transfer control device. Upon receiving this notification, the incoming call transfer control means 41 performs incoming call transfer control. The incoming call transfer control by the incoming call transfer control means 41 connects the incoming call to the exchange 30 to the telephone terminals 21 to 2n of the subscribers other than the called party, or the related service performing means 60. Including to request. The related service implementation means 60 generally performs a process corresponding to an incoming call on behalf of the called party, such as a FAX mail device.

Further, according to the present invention, the information regarding the call transfer is transmitted to the called party device by the call information transmitting means 42. In the called party device, the incoming call information notification means 51
Upon receiving the above call transfer information,
This is notified to the called party. As this notification, for example,
When the called device has a display device (for example, a personal computer or a workstation), the display of "call transfer in progress" on the screen of the display device, each means 50 to 50 of the called device When 52 uses the function of the telephone terminal 53 of the called party, a lamp display provided on this telephone terminal 53, or when the telephone terminal 53 has a display device, It may be displayed on the screen of "Call is being transferred", and further, the voice from the caller who is transferring the call may be output from the speaker of the telephone terminal 53 of the called party as a monitor output.

The configuration up to this point is for executing the procedure except step 3 in FIG. Next, in order to execute the procedure of FIG.
In response to the input of the addition request from the called party notified of the above-mentioned information regarding the call transfer, the input addition request is transmitted to the switch-to-switch addition request means 43 of the call transfer control device. In the switching device addition requesting means 43, the switching device 30
The addition request execution means 32 of the exchange 30 performs processing according to the addition request.

As the processing in response to the addition request, for example,
In addition to the calling party and the subscriber of the call transfer destination (or the related service implementing means 60), a three-party connection including the telephone terminal 53 of the called party, or the call transfer destination It includes, for example, stopping the line connection by transfer to the subscriber (or the related service implementing means 60) to make a two-way connection between the calling party and the called party.

In addition to the above configuration, the following configuration can be provided to execute the process of step 3 of the procedure of FIG. The called party device (generally, a subscriber device that can be a called party device) is provided with the notification service requesting means 50, and in advance (before receiving a call), an incoming call is received from a subscriber before becoming a called party. A request for registration of the notification service is input, and this is input to the notification service registration means 4 of the call transfer control device.
Send to 0. When the notification service registration means 40 receives the above registration request, it registers this. The above-mentioned incoming call information transmission means 42 of the incoming call transfer control device refers to the above notification service registration means 40 before sending the information regarding the incoming call transfer to the called party device, and receives the incoming call for the called party of the incoming call. It judges whether the notification function has been registered. If it is not registered, it does not send the information on the call transfer to the called device. If it is judged that it is registered, the information on the call transfer is called. Send to the device.

Further, as described above, in the called device, some or all of the notification service requesting means 50, the incoming call information notifying means, and the addition requesting means 52 use the function of the telephone terminal 53. can do. The part of the telephone terminal 53 that does not utilize the function may be a personal computer or a workstation of the called party, which can communicate with the call transfer control device.

The function of the call transfer control device may be provided in part or all by the exchange 30 itself.
Incoming call notification means 31 and addition request execution means 32 included in the exchange 30 described above, notification service registration means 40, incoming call transfer control means 41, incoming call information transmission means 42, and anti-exchange addition request means included in the incoming call transfer control device. 43,
Then, the transfer service requesting means 5 included in the called device
0, incoming call information notification means 51, and addition request means 5
2, the telephone terminal 53 of the called party, and the independent function of the related service implementing means 60 can be realized by software, hardware, or a combination thereof.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 4 shows an example of a computer telephony system in which a telephone exchange and a computer cooperate with each other as a first embodiment of a call transfer system of the present invention. In FIG. 4, reference numeral 71 is a telephone set of a calling party, 72 is a telephone exchange, 73 is a line control device that instructs exchange control in cooperation with the telephone exchange, 74 is a line that connects the exchange 72 and the line control device 73, and 75 Is a line control unit included in the line control device 73, 76 is a switching control unit included in the line control device 73, 77 is a service control unit included in the line control device 73, 78 is a telephone set of the called party, and 79 is a called party. The terminal device of the caller, 80 is a transfer display unit included in the terminal device 79 of the called party, 81 is a connection instruction unit included in the terminal device 79 of the called party, and 82 is the terminal device 79 of the called party. It is a LAN (local area network) for connecting to the line control device 73. The line control unit 75, the exchange control unit 76, and the service control unit 77 included in the line control device 73, respectively, are hardware, software, and any of those configured to realize the following control. It can be realized by combination.

FIG. 5 shows a control procedure of the call transfer system of FIG. When a call originated from the caller's telephone set 71 arrives at the exchange 72, the exchange 72 notifies the line control device 73 of the arrival. The line control device 73 determines the service registration status of the called party (for example, the presence or absence of call transfer registration).
The incoming call transfer processing is activated depending on the use status of the telephone or the telephone (for example, whether or not the telephone is busy). For example, this line control device 7
3 is to perform the substitute response service by itself, the control signal is exchanged with the exchange 72 to transfer the incoming call to the line 74 accommodated by the line controller 73 (the line 74 accommodated by the line controller 73). Instruction to connect to the switch 72
Call from the line control device 73 to the line control device 73 and an automatic response of the line control device 73 to the call). Line control device 7
When 3 answers the call, the telephone exchange 72 connects the caller 71 and the line 74 accommodated in the line control device 73, and the line control device 73 sends the response guidance to the caller and then the message of the caller. To record.

At this time, the line control device 73 notifies the terminal device 79 of the called party of the call transfer according to the present invention, and displays the information of the call transfer on the display of the terminal device 79. The line control device 73 records the caller's message after sending a response message to the caller. At this time, for example, when the response message is started to be transmitted and the message is started to be recorded, the terminal device 79 of the called party is notified of the change in the incoming call transfer state, and the terminal device 79 changes the display content according to the notification. be able to. When the called party seeing this display selects the transfer call displayed on the terminal device 79 and executes a predetermined response operation (input of the above-mentioned additional request),
LAN 82 from the terminal device 79 to the line control device 73
A connection request is transmitted through the line control device 73, and the line control device 73 instructs the telephone exchange 72 to additionally connect the telephone 78 of the called party to the transfer call selected above.
2 calls the telephone 78 of the called party, and when the called party 78 responds to the call, the calling party 71 and the line 74 accommodated in the line control device 73 and the called party are called. The line is connected to the three-way call state.

In the configuration of FIG. 4, various specifications can be added and changed as follows. (1) In the configuration of FIG. 4, the service control unit 77 registers the type of display device of the subscriber as subscriber data at the time of call transfer registration, and at the time of incoming call, the subscriber data registered at the call transfer registration. On the basis of the above, whether the display destination device is a terminal device or a telephone is determined, and if the display destination device is a terminal device, the terminal device 7 is sent to the line control device 73 via the LAN 82.
9, or if the display destination device is a telephone, it can be displayed on the telephone 78 by transmitting a display request for the call transfer call from the line control device 73 to the telephone 78 via the exchange 72. it can.

(2) In the configuration of FIG. 4, the service control unit 77 registers the call (or call type) that the subscriber desires to display the call forwarding as subscriber data at the time of registering the call forwarding. , At the time of call transfer, it is judged whether the incoming call is a registered call or a call type based on this subscriber data, and if it is a registered call or a call type, an incoming call is received. It is possible to request transfer display.

(3) In the configuration of FIG. 4, the service control unit 77 registers the caller number condition for which the subscriber desires to display the call forwarding as subscriber data at the time of call forwarding registration, and at the time of call forwarding, Based on the subscriber data, it is determined whether or not the incoming call corresponds to the registered calling number, and if it is the registered calling number, the display of the incoming call transfer can be requested.

(4) In the configuration of FIG. 4, when the above-mentioned addition request is input by the key input of the telephone 78,
When a predetermined key input is made from the telephone 78 in order to confirm whether or not there is a response instruction from the telephone 78 after making a display request of the incoming call transfer to the telephone 78, the service control unit 77: From the exchange 72, the line control unit 7
It is possible to program the exchange 72 to notify the service control unit 77 via 5 and monitor the key input of the telephone 78 via the exchange 72. As a result, a response instruction can be made possible by a key operation from the telephone 78.

(5) In the procedure of FIG. 5, when an addition request is input from the called party, the addition request is made according to the contract (contract) at the time of call transfer or the setting at the time of registration. Instead of the three-party call, the line accommodated in the line control device may be disconnected to make a two-party call between the caller and the called party. (6) In the procedure of FIG. 5, in addition to requesting the display of the called party, the line controller 73 turns on the speaker of the called party's telephone 78 via the exchange 72. The switch 72 can be controlled to send control signals and voice information of the incoming call, which allows
The called party can monitor and listen to the incoming call from the speaker of the telephone set 78.

(7) In the procedure of FIG. 5, the line controller 7
In addition to requesting the display of the called party, 3 is a control signal for turning on the speaker of the called party 78 to the called party's telephone 78 through the exchange 72, and voice information of the incoming call. The switch 72 can be controlled to send and, which allows the called party to monitor the incoming call from the speaker on the telephone 78.

(8) In the procedure of FIG. 5, the line controller 7
3 is that the monitoring instruction for the call transfer call is registered in advance in the called party, and the registration of the monitor instruction for the call transfer call is judged when the call transfer is performed and the transfer destination responds. By issuing an additional connection instruction to the exchange 72, it is possible to automatically connect the telephone 78 to the monitor after the call is transferred.

(9) In the procedure shown in FIG.
Function to connect the monitor by turning on the speaker of 8 (above
In addition to (7)), the called party can connect the above three parties or two parties by performing a response instruction operation during voice monitoring. (10) In the procedure of FIG. 5, when the terminal device 79 of the subscriber instructs the line control device 73 to additionally connect the telephone 78 to the transfer call, Waits for three-party connection and the telephone 78
Calls the telephone 78 from the exchange 72 when the call is disconnected and the exchange 7 responds to the call so that a three-way connection is established.
2 can be programmed.

FIG. 6 shows the second part of the call transfer system of the present invention.
As an embodiment of the present invention, an example of a system configuration in the case where the telephone exchange alone performs the same control as the computer telephony system described above is shown. In FIG. 6, 7
Reference numeral 0 is a public telephone network, 71 is a calling telephone, 72 'is an exchange, 85 is a voice mail device connected to the exchange 72', and 86 and 87 are telephone terminals connected to the exchange 72 '. In the configuration of FIG. 6, all the functions of the line control device 73 of the configuration of FIG. 4 are included in the exchange 72 '. Therefore, various controls (excluding the interaction with the called terminal device) by the cooperation between the exchange 72 and the line control device 73 described in the first embodiment are as follows.
In the second embodiment, all of the exchanges 72 'can be implemented alone.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 7 shows the first embodiment described above with reference to FIG.
It is a block diagram of one example of the embodiment of the. In FIG. 7, 71 is a telephone terminal, 72 "is an exchange, 90 is a voice server, 74 'is a voice server extension connecting the exchange 72" and the voice server 90, 97 is a LAN, and 91 is a line control unit.
Telephone terminals 71, 98, and 9 via the exchange 72 ″
A device for controlling communication with the device 9 for recording / playing back a voice message, a reference numeral 92 for a mailbox, which is prepared for the user and stores and manages a message received to the user, and 93 is a service control unit Which controls the service of the voice server 90, 94 is a destination control unit, which delivers the received message to the corresponding mailbox 92, 95 is an exchange control unit, and an exchange 72 '.
, Request incoming line monitoring, make a connection request,
96 is a WS control unit that receives an incoming call notification.
Each workstation WS4 and W via AN97
The communication control with S6 is performed.

The workstation WS4 and the telephone terminal 98 of the user A, or the workstation WS6 and the telephone terminal 99 of the user B are recognized and managed in the voice server 90 in association with each other, and the telephone terminal 98 and the telephone. Whether or not there is an incoming call to the terminal 99 is always notified from the exchange 72 ″ to the voice server 90, and the voice server 90 monitors the incoming call. For example, when the user A leaves the voice server 9,
When attempting to perform the non-resident registration to 0, the workstation WS4 receives the W of the voice server 90 via the LAN 97.
The absence control registration request is transmitted to the S control unit 96, and the WS control unit 96, which has received the request, notifies the service control unit 93,
The service control unit 93 stores this, that is, registers the absence agent. After that, when there is an incoming call to the telephone terminal 98,
The exchange 72 ″ notifies the exchange control unit 95 of the voice server 90 of this incoming call, and the exchange control unit 95 having received the notification notifies the service control unit 93 of that fact.
Issues a request for connection to the voice server extension 74 'to the exchange control unit 95 and instructs the line control unit 91 to record a message. When the message recording is completed, the line control unit 9
1 notifies the service control unit 93 to that effect, and the service control unit 93 notifies the destination control unit 94 of the mailbox A of the user A.
Direct delivery of messages to. The above is the voice server 9
However, the voice server 90 also provides other general mail functions (message transmission / reception, etc.) in the same manner as described above.

FIG. 8 shows a service control procedure of the voice server 90 in the system of FIG. Similar to the procedure of FIG. 5 described above, an incoming call is received and a call transfer (connection request) is made while the user A is absent-attempt registration (when the telephone terminal 98 receives an incoming call, the connection to the voice server extension is performed). At this time, if the workstation WS4 is logging in to the voice server 90, the voice server 90 communicates with the workstation WS4 (via the WS control unit 96 under the control of the service control unit 93), and the workstation WS4 The user A is informed that the call transfer is being performed by displaying the execution of the absence agent service on the.

When the user A confirms this display and wants to answer the telephone, the workstation WS4 sends a request to the voice server 90 (via the exchange control unit 96 under the control of the service control unit 93). By transmitting the request to the exchange 72 ″, the telephone terminal 98 of the called party (user A) is added to the call in progress between the telephone terminal 71 of the calling party and the line control section 91 of the voice server 90. The caller's telephone terminal 71 and the voice server 90
It enables a three-way call without disconnecting a call in progress with the line control unit 91. (If the voice server has not responded, the connection will be a two-way connection.) FIG. 9 shows a first modification of the above control procedure in the system of FIG.

In the procedure of FIG. 9, the voice server 90
When the incoming call notification is received from the exchange 72 ″, after controlling the connection of the incoming call to the line control unit 91, the service control unit 93 causes the called party to connect as shown in frame (a) of FIG. Whether or not to notify the call transfer to the call is determined based on the pre-registered call type condition and caller number condition. You can add conditions such as not notifying, etc. If the conditions are not met, the incoming call to the called party is not notified below.

Further, in the procedure of FIG. 9, the frame of FIG.
As shown in (b), the call transfer notification to the called party (user A) is made not by the display on the workstation WS4 of the called party but by the display on the telephone terminal 98. Therefore, when the above conditions are satisfied, the service control unit 9
3 transmits a display request indicating that there is an incoming call transfer to the exchange 72 ″ via the exchange control unit 91, and accordingly, the exchange 72 ″ sends the call to the telephone terminal 98 of the called party. The terminal 98 is controlled so as to display, on a lamp, a display or the like, indicating that there is an incoming call transfer. In addition, as a display destination designation, a terminal device (WS)
If it can be displayed on both the device and the telephone terminal, a method of requesting display to a device specified in advance, or for example, when the terminal device is logging in to the voice server, it is displayed on the terminal device and logged out Then, it can be programmed so that the display destination can be dynamically changed so as to be displayed on the telephone terminal.

Further, in the procedure of FIG. 9, the frame of FIG.
As shown in (c), when the user A confirms this display and wants to answer the call, the button of the telephone terminal 98 may be pressed to give a response in addition to the operation from the workstation WS4, or The exchange 72 ″ can be programmed to instruct a response by dialing a special number from the telephone terminal 98.

FIG. 10 shows a second modification of the above control procedure in the system of FIG. In the procedure of FIG. 10, as shown in the frame (d) of FIG. 10, when connecting the three-party call by the response instruction operation of the user A, the two-party connection is included as the parameter included in the additional connection instruction message. The disconnection parameter is added to send a request to the exchange 72 ″ through the exchange controller 95 under the control of the service controller 93 of the voice server 90, and the substitute responder (here, Voice server 9
0) is disconnected from the call, and the sender and the telephone terminal 98
It can be connected as a two-party call. Or, under the control of the service control unit 93 of the voice server 90, a request is transmitted to the exchange 72 ″ via the exchange control unit 95,
In the exchange 72 ″, after the three-party call is connected, the voice server 90 is disconnected and the caller and the telephone terminal 98 are connected to each other.
You can also connect a person call.

FIG. 11 shows a third modification of the above control procedure in the system of FIG. FIG.
As shown in the frame 1 (e), the service control unit 93 of the voice server 90 is added by adding a parameter for making the connection of the third party (the telephone terminal 98 here) a monitor connection as a parameter of the additional connection instruction. Exchange control unit 9 under the control of
This request is transmitted to the exchange 72 ″ through the switch 5, and the exchange 72 ″ sends the request to the telephone terminal 98 to monitor the call between the caller and the substitute responder (here, the voice server). A speaker-on control signal and a voice signal can be transmitted.

Further, as shown in the frame (f) of FIG. 11, by issuing a response instruction for a three-party call during this monitor connection,
Under the control of the service control unit 93 of the voice server 90, this request is transmitted to the exchange 72 ″ via the exchange control unit 95, the connection from the monitor connection is changed to the three-party connection, and the three-party call is started. Fig. 12 shows a fourth modification of the above-mentioned control procedure in the system of Fig. 7. As shown in Fig. 12, the subscriber of the service control unit 93 from the workstation WS4 in advance. By registering the monitor instruction in the data, when the user A receives an incoming call during the absence registration and the incoming call is transferred and the proxy responder (here, the voice server 90) responds by the procedure described above, The service control unit 93 checks whether or not the monitor instruction is registered, and if there is the monitor instruction, the service control unit 93 requests the exchange 72 ″ for an additional connection including the monitor connection parameters of the telephone terminal 98, The speaker of the telephone terminal 98 is turned on to monitor the call.

After that, if the user A listens to the contents of the call monitor, or confirms the display of the call transfer and inputs the response instruction, the three-party connection can be realized as described above. In the above-mentioned procedure, when the user A confirms this display and wants to answer the call, if the telephone terminal 98 is talking at that time even though the connection request is sent from the workstation WS4 to the voice server 90, As shown in the frame (g) of 13, the exchange 72 ″, which has received the request for the additional connection from the voice server 90, operates as a sender and a substitute responder (here, the voice server 9).
The two-party call of 0) is continued, waiting for disconnection of the telephone terminal 98, the telephone terminal 98 is called by the disconnection of the telephone terminal 98, and the three-party call state is set by the response of the telephone terminal 98.

FIG. 14 shows an example of the control procedure in the configuration of the second embodiment described above with reference to FIG. When an incoming call arrives at the telephone terminal 86 from the telephone terminal 71 while the telephone terminal 86 is registered for transfer to the voice mail apparatus 85, the exchange 72 'calls the voice mail apparatus 85 and simultaneously turns on the lamp of the telephone terminal 86. Blinks to notify the user (callee) that voice mail proxy has started. When the voice mail device 85 automatically responds, the exchange 72 ′ is connected to the telephone terminal 71 and the voice mail device 85.
To connect to the voice mail recording state (calling state). The user presses the blinking lamp to display the caller number or the name (name, company name, etc.) registered in advance corresponding to the caller number on the display of the telephone 86. When the user confirms this display and wants to answer the call, the telephone terminal 86 is called with the caller number displayed on the display of the telephone terminal. This interrupts the call in progress between the telephone terminal 71 and the voice mail device 85, and
The person is in the call state and can respond to the incoming call from the telephone terminal 71.

The same service can be implemented when the call is transferred to the telephone terminal 87 instead of being transferred to the voice mail device 85. Further, as a method of notifying the user that the voice mail proxy has started, it is possible to display it on the display of the telephone terminal 86 instead of turning on (blinking) the lamp.

Also, by registering the connection form at the time of the additional connection in advance, the telephone terminal 86 is connected to the telephone connection between the telephone terminal 71 and the voice mail device 85 for monitor connection or three-way connection. Or you can decide if you want a two-way connection. In the case of monitor connection, the telephone terminal 86 monitors the telephone call between the telephone terminal 71 and the voice mail device 85. By issuing a response instruction from the telephone terminal 86 during the monitor connection, the connection from the monitor connection to the three-party connection can be changed to start a three-party call.

[0041]

As described above, according to the present invention, the user is informed of whether or not a call is being transferred at the telephone terminal registered as absent or transferred, and the called party is added without disconnecting the call currently in progress according to the user's instruction. It is a service that enables telephone calls.
Therefore, according to the present invention, with respect to a call transferred to the voice mail system or another telephone terminal by the subscriber during a call or temporarily leaving the seat, the status of the incoming call is known and Being able to respond makes it possible to immediately respond to the urgency and importance of information.

Further, according to the present invention, there is an incoming call when the subscriber for whom the call forwarding function is set is present, and when the call is forwarded, the subscriber is notified of the call forwarding and the subscriber judges. The convenience of the subscriber is improved because the forwarding call can be easily connected with the subscriber.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first procedure of a call transfer control method according to the present invention.

FIG. 2 is a diagram showing a second procedure of the call transfer control method according to the present invention.

FIG. 3 is a diagram showing a basic configuration of a call transfer system according to the present invention.

FIG. 4 is a diagram showing an example of a computer telephony system in which a telephone exchange and a computer cooperate with each other, as a first embodiment of a call transfer system of the present invention.

5 is a diagram showing a control procedure of the call transfer system of FIG.

FIG. 6 is a diagram showing an example of a system configuration in the case where a telephone exchange alone performs the same control as the above computer telephony system, as a second embodiment of the call transfer system of the present invention.

FIG. 7 is a configuration diagram of an example of the first embodiment described above with reference to FIG.

8 is a diagram showing a service control procedure of a voice server 90 in the system of FIG.

9 is the first of the above control procedures in the system of FIG.
It is a figure which shows the modification of.

10 is a diagram showing a second modification of the above control procedure in the system of FIG.

11 is a diagram showing a third modification of the above control procedure in the system of FIG.

12 is a diagram showing a fourth modification of the above control procedure in the system of FIG.

13 is a diagram showing a fifth modification of the above control procedure in the system of FIG.

FIG. 14 is a diagram showing an example of a control procedure in the configuration of the second embodiment described above with reference to FIG.

[Explanation of symbols]

 20, 21, 2n ... Telephone terminal 30 ... Exchange 31 ... Incoming call notification means 32 ... Addition request execution means 40 ... Notification service registration means 41 ... Incoming call transfer control means 42 ... Incoming information transmission means 43 ... Exchange addition request means 50 ... Notification service requesting means 51 ... Incoming information notifying means 52 ... Addition requesting means 53 ... Callee's telephone terminal 60 ... Related service implementing means 70 ... Public telephone network 71 ... Caller's telephone 72 ', 72 "... Exchange 74' ... Voice server extension 85 ... Voice mail device 86, 87 ... Telephone terminal 90 ... Voice server 91 ... Line control unit 92 ... Mail box 93 ... Service control unit 94 ... Destination control unit 95 ... Exchange control unit 96 ... WS control unit 97 ... LAN

Claims (30)

[Claims] 1. A first step (1) of making a call from a calling party device, and a second step of receiving the called call at an exchange and notifying the incoming call to the call transfer control device from the exchange. Step (2), a third step (5) of transferring the call to a predetermined call transfer destination by the call transfer control device, and a fourth step of transferring information on the call transfer to the called party device.
(6) and a fifth step (7) in which the called device receives the information on the call transfer and informs the callee of the call transfer. Control method. 2. A first step (1) for making a call from a calling party device, a second step (2) for receiving the called call at an exchange, and the call by the exchange. A third step (5) of transferring the call to a predetermined call transfer destination, a fourth step (6) of transferring information on the call transfer from the exchange to the called party device, and in the called party device, A fifth step (7) of receiving information about the call transfer and notifying the called party of the call transfer. 3. A sixth step (3) of judging whether or not an incoming call notification function is registered for the called party of the incoming call before the fourth step (6); The call transfer control method according to claim 1, wherein the fifth step is executed only when it is determined that the registration is made in step (3). 4. The call transfer control method according to claim 1, wherein in the fourth step (6), the information related to the call transfer is transferred from the call transfer control device to the called device. 5. In the fourth step (6), the information regarding the call transfer is transferred from the call transfer control device to the called device by transmitting a request to the switch. The call transfer control method according to claim 1. 6. The call reception according to claim 1, wherein in the fourth step (6), the information regarding the call transfer is information for notifying that the callee has received a call. Transfer control method. 7. The call transfer according to claim 6, wherein in the fourth step (6), the information regarding the call transfer is changed according to progress of a response step to the caller device at a call transfer destination. Control method. 8. The call transfer control method according to claim 1, wherein in the fourth step (6), the information related to the call transfer includes voice information transmitted from the calling party device. . 9. The call transfer control according to claim 8, wherein in the fourth step (6), the information related to the call transfer also includes voice information transmitted from the call transfer control device to the calling party device. Method. 10. A sixth step (1) of inputting an addition request from the called device after the fifth step (7).
1), a seventh step (12) of transmitting the input addition request to the call transfer control device from the called party device, and an eighth step (1) of transmitting the addition request to the exchange.
The call transfer control method according to claim 1, further comprising: 3) and a ninth step (14) in which the exchange performs a process according to the addition request. 11. A sixth step (1) of inputting an addition request from the called party device after the fifth step (7).
1), a seventh step (13) of transmitting the input addition request from the called party device to the exchange, and an eighth step (14) of performing processing according to the addition request in the exchange. ) And the call transfer control method according to claim 2. 12. The call transfer control method according to claim 10, wherein the addition request is a request to additionally connect a telephone terminal of the called party to the incoming call that has been forwarded. 13. The request for addition is a request for connecting the telephone terminal of the called party to the incoming call transferred to the incoming call and disconnecting the connection to the incoming call transfer destination.
The call transfer control method according to any one of 1 to 11 above. 14. The addition request is a request for monitoring a voice of a call between the call transfer destination to which the call is transferred and the caller device at a telephone terminal of the called party. 12. The call transfer control method according to 10 or 11. 15. In the eighth step (13), when the telephone terminal of the called party is busy when the exchange receives the addition request, the exchange terminates the call. The call transfer control method according to claim 10, wherein the processing of the ninth step is performed after waiting. 16. An exchange (3) connected to a plurality of telephone terminals.
0) and a call transfer control device that performs call transfer control in cooperation with the switch (30), the switch (30) handles a call from the telephone terminal (20) of the caller. When an incoming call is received, it has a notification means (31) for notifying the incoming call transfer control device, and the incoming call transfer control device receives the notification and performs an incoming call transfer control for transferring the received call to a predetermined incoming call transfer destination. Call transfer control means (4
1), an incoming call information transmitting means (42) for transmitting information on the call transfer to a called party device, and an addition request from the called party device, and the addition request to the exchange (30). And a switching device addition requesting means (43) for transmitting, wherein the switching device (30) has the switching device addition requesting means (4)
A call transfer system comprising an addition request execution means (32) for executing a process according to the addition request from 3). 17. An exchange (3) connected to a plurality of telephone terminals.
In an incoming call transfer control device that performs an incoming call transfer control in cooperation with 0), a notification of an incoming call from the telephone terminal (20) of the calling party is received from the exchange (30), and the incoming call is transmitted in a predetermined manner. An incoming call transfer control means (41) for performing an incoming call transfer control for transferring to an incoming call transfer destination, an incoming call information transmitting means (42) for sending information on the incoming call transfer to a called party device, and an addition from the called party device An incoming call transfer control device comprising: a switching device addition request means (43) for receiving a request and transmitting the addition request to the switching device (30). 18. In response to a request from the called party device,
The incoming call information registration means (40) for registering the incoming call notification is provided, and the incoming call information transmission means (42) provides the called party device with the information regarding the call transfer only for the incoming call to the registered called party. The call transfer control device according to claim 17, which transmits. 19. The notification service registration means (40)
Sets the conditions for transmitting the information regarding the call transfer to the called party device, and the incoming call information transmitting means (42) sets the conditions set for the incoming call to the registered called party. Only if the condition is satisfied,
19. The call transfer control device according to claim 18, wherein the call transfer information is transmitted to the called device. 20. The condition for transmitting information regarding the call transfer to a called party device includes at least one of a call type of the called call and a calling party number of the calling party. Call transfer control device. 21. The notification service registration means (40)
19. The call transfer control device according to claim 18, wherein, when transmitting the information regarding the call transfer to the called device, the option setting is performed to determine whether or not to transmit the voice of the incoming call to the called device. 22. The notification service registration means (40)
When transmitting the information regarding the call transfer to the called party device, the information is transmitted to the telephone terminal of the called party via the exchange, or the terminal of the called party apparatus is provided separately from the telephone terminal. The call transfer control device according to claim 18, wherein whether to display on the device is set. 23. The notification service registration means (40)
As an additional request to the exchange, the caller,
A request is made for a three-party connection between the call transfer destination and the telephone terminal of the called party, or the connection with the call transfer destination is disconnected and the calling party and the called party 19. The call transfer control device according to claim 18, which sets whether to request a two-party connection with a telephone terminal that the user has. 24. An exchange (3) for connecting to a plurality of telephone terminals.
In 0), the exchange (30), when receiving a call from the telephone terminal (20) of the caller, performs a call transfer control means (call transfer control means for transferring the received call to a predetermined call transfer destination). Four
1), an incoming call information transmitting means (42) for transmitting the information regarding the call transfer to the called party device, and an addition request from the called party device, and processing is performed according to the addition request. An exchange characterized by having additional request execution means (32). 25. In response to a request from the called party device,
The incoming call information registration means (40) for registering the incoming call notification is provided, and the incoming call information transmission means (42) provides the called party device with the information regarding the call transfer only for the incoming call to the registered called party. The exchange according to claim 24, which transmits. 26. The notification service registration means (40)
Sets the conditions for transmitting the information regarding the call transfer to the called party device, and the incoming call information transmitting means (42) sets the conditions set for the incoming call to the registered called party. Only if the condition is satisfied,
26. The exchange according to claim 25, wherein the call transfer information is transmitted to a called party device. 27. The condition for transmitting information regarding the call transfer to a called party device, comprising at least one of a call type of the called call and a calling party number of the calling party. Switch. 28. The notification service registration means (40)
26. The exchange according to claim 25, wherein, when transmitting the information related to the call transfer to the called party device, an option setting is made as to whether or not the voice of the incoming call is sent to the called party device. 29. The notification service registration means (40)
When transmitting the information regarding the call transfer to the called party device, the information is transmitted to the telephone terminal of the called party via the exchange, or the terminal of the called party apparatus is provided separately from the telephone terminal. 26. The exchange according to claim 25, wherein whether to display on the device is set. 30. The notification service registration means (40)
As an additional request to the exchange, the caller,
A request is made for a three-party connection between the call transfer destination and the telephone terminal of the called party, or the connection with the call transfer destination is disconnected and the calling party and the called party 26. The exchange according to claim 25, which sets whether to make a request for a two-party connection with an existing telephone terminal.