JP2021101509A - Telephone system, telephone control device, extension telephone terminal, mobile telephone terminal and telephone call switching program - Google Patents

Abstract

To switch an external telephone call to a mobile telephone terminal from an extension telephone terminal seamlessly and easily without involving a significant increase in hardware scale.SOLUTION: An extension telephone terminal 20 notifies a telephone control device 10 of a telephone call switching request received via wireless communication from a mobile telephone terminal 30, which is a switching destination, and sends a telephone call switching permission notified by the telephone control device 10 to the mobile telephone terminal 30 via wireless communication in response to the telephone call switching request. The telephone control device 10 makes an external telephone call to the mobile telephone terminal 30 through a telephone network NW according to the telephone call switching request, and according to a response at the mobile telephone terminal 30 to the external telephone call, the telephone control device 10 switches external telephone call with the telephone network NW connected to the target extension telephone terminal 20, which is a notification source of the telephone call switching request, from the telephone call with the target extension telephone terminal 20 to a telephone call with the mobile telephone terminal 30 and connects the external telephone call to the mobile telephone terminal 30.SELECTED DRAWING: Figure 1

Description

The present invention relates to a telephone control technique for seamlessly switching an outside line call between an extension telephone terminal and a mobile phone terminal of a telephone system.

In recent years, in telephone systems such as business phone systems and PBX systems, mobile phone terminals have become one of extension telephone terminals due to the rapid spread of mobile information terminals (hereinafter referred to as mobile phone terminals) having a call function such as smartphones and pads. The extension technology of so-called mobile phone terminals, which is used as one, is being realized.

As one of such extension technologies, Patent Document 1 describes a docking station for connecting a smartphone (smart device) as an extension telephone terminal in a telephone system, and uses a telephone control device (IP telephone exchange). , A technique for controlling an incoming call to an extension number of a smartphone as an incoming call to an extension number of a docking station is described.

In this technology, a UC server is provided in the telephone system, and session information required for switching an outside line call between the docking station and the smartphone is transmitted between the docking station, the smartphone, and the telephone control device via the UC server. It is supposed to be exchanged. For example, when switching a call during a call to a smartphone with the docking station handset (business handset section), first display the switching control information (session information) on the docking station display screen with a QR code, and then use the smartphone app to display these on the screen. It reads and notifies the telephone control device via the UC server. Further, the docking station notifies the telephone control device of the switching control information via the UC server. Based on these switching control information, the telephone control device switches and controls the call during a call with the handset to the smartphone.

Japanese Unexamined Patent Publication No. 2013-175818

However, in such a conventional technique, since a QR code is used for exchanging switching control information between the smartphone and the docking station, there is a problem that the user operation is troublesome. In addition, a UC server is required to exchange switching control information between the smartphone and docking station and the telephone control device, and a docking station must be provided for each smartphone, so the hardware scale of the telephone system is large. There was a problem that it increased significantly.

The present invention is for solving such a problem, and is a telephone control capable of seamlessly and easily switching an outside line call from an extension telephone terminal to a mobile phone terminal without significantly increasing the hardware scale. The purpose is to provide technology.

In order to achieve such an object, the telephone system according to the present invention is a telephone system including an extension telephone terminal and a telephone control device for exchanging and connecting the extension telephone terminal to a telephone network, and the extension telephone terminal. Notifies the call switching request from the mobile phone terminal to which the call is switched received via wireless communication to the telephone control device, and grants the call switching permission notified from the telephone control device in response to the call switching request. A terminal control unit that transmits to the mobile phone terminal via the wireless communication is provided, and the telephone control device calls the mobile phone terminal via the telephone network in response to the call switching request, and responds to the outside line call. In response to the response from the mobile phone terminal, an outside line call with the telephone network connected to the target extension telephone terminal that is the notification source of the call switching request is transferred from the call with the target extension telephone terminal to the mobile phone. It is equipped with a control unit that switches and connects to a call with a terminal.

Further, another telephone system according to the present invention is a telephone system including an extension telephone terminal and a telephone control device for exchanging and connecting the extension telephone terminal to a telephone network, and the extension telephone terminal is used for a call switching operation. A terminal control unit that notifies the telephone control device of a call switching request in response to the call switching request and automatically responds to an extension call from the telephone control device in response to the call switching request is provided, and the telephone control device responds to the call switching request. In response, the target extension telephone terminal that is the notification source of the call switching request is internally called, and in response to the automatic response of the target extension telephone terminal to the extension call, the telephone is sent to the mobile phone terminal corresponding to the target extension telephone terminal. It is provided with a control unit for switching and connecting an outside line call with the telephone network connected via a control device from a call with the mobile phone terminal to a call with the target extension telephone terminal.

Further, the telephone control device according to the present invention is a telephone control device used in a telephone system that exchanges and connects an extension telephone terminal to a telephone network, and comprises an extension interface unit that accommodates the extension telephone terminal and the extension telephone terminal. It is provided with a control unit that controls an outside line call via the telephone network, and the control unit responds to a call switching request from a mobile phone terminal serving as a call switching destination received by the extension telephone terminal via wireless communication. , The mobile phone terminal is called to an outside line via the telephone network, and is connected to the target extension telephone terminal to be a call switching source via the telephone control device in response to the response of the mobile phone terminal to the outside line call. The external line call with the telephone network is switched and connected from the call with the target extension telephone terminal to the call with the mobile phone terminal.

Further, another telephone control device according to the present invention is a telephone control device used in a telephone system for exchanging and connecting an extension telephone terminal to a telephone network, and includes an extension interface unit for accommodating the extension telephone terminal and the extension telephone. It is equipped with a control unit that controls an outside line call via the telephone network by the terminal, and among the extension telephone terminals, the target extension telephone terminal responds to a call switching request notified from the target extension telephone terminal that is the call switching source. In response to the automatic response of the target extension telephone terminal to the extension call, an outside line call with the telephone network connected to the mobile phone terminal that is the call switching source via the telephone control device is performed. The connection is switched from the call with the mobile phone terminal to the call with the target extension telephone terminal.

Further, the extension telephone terminal according to the present invention is an extension telephone terminal used in a telephone system including a telephone control device for exchanging and connecting an extension telephone terminal to a telephone network, and makes a call switching request according to a call switching operation. It is an extension telephone terminal that notifies the control device and automatically answers an extension call from the telephone control device in response to the call switching request.

Further, the other extension telephone terminal according to the present invention is an extension telephone terminal used in a telephone system including a telephone control device for exchanging and connecting an extension telephone terminal to a telephone network, and makes a call switching request according to a call switching operation. This is an extension telephone terminal that notifies the telephone control device and automatically answers an extension call from the telephone control device in response to the call switching request.

Further, the mobile phone terminal according to the present invention is a mobile phone terminal used in a telephone system provided with a telephone control device for exchanging and connecting an extension telephone terminal to a telephone network, and is connected to the telephone network to make an outside line call. The target extension telephone terminal is connected to the target extension telephone terminal via wireless communication, a call switching request is transmitted to the target extension telephone terminal via the wireless communication, and the call switching notified from the telephone control device in response to the call switching request. The permission is received via the wireless communication, the standby for the outside line call from the telephone control device is started, the outside line call is received from the telephone control device via the telephone network, and the outside line call is answered. This is a mobile phone terminal that starts a call that is switched and connected from an outside line call with the target extension phone terminal.

Further, the call switching program according to the present invention is a call switching program executed in a mobile phone terminal used in a telephone system provided with a telephone control device for exchanging and connecting an extension telephone terminal to the telephone network, and is connected to the telephone network. The step of connecting to the target extension telephone terminal that is making an outside line call via wireless communication and transmitting a call switching request to the target extension telephone terminal via the wireless communication, and the step of transmitting the call switching request to the target extension telephone terminal, and the above The step of receiving the call switching permission notified from the telephone control device via the wireless communication and starting the standby for the outside line call from the telephone control device, and the outside line call from the telephone control device via the telephone network. This is a call switching program that causes a computer to execute a step of starting a call that is switched and connected from an outside line call with the target extension telephone terminal by receiving the call and answering the outside line call.

According to the present invention, the extension telephone terminal or the mobile phone terminal to be switched is automatically specified only by the user performing the call switching operation, and the outside line call is automatically switched. Therefore, unlike the above-mentioned conventional technology, it is not necessary to read the QR code using the mobile phone terminal, the work load of the user required for switching the call can be significantly reduced, and the extension phone terminal and the mobile phone terminal can be used. It is possible to seamlessly and easily switch between external line calls. Moreover, since it is not necessary to use a UC server or a docking station for extension as in the prior art, the hardware scale is not significantly increased.

It is a block diagram which shows the structure of a telephone system. It is a block diagram which shows the structure of an extension telephone terminal. It is a block diagram which shows the structure of a mobile phone terminal. It is a sequence diagram which shows the call switching operation which concerns on 1st Embodiment. It is a sequence diagram which shows the call switching operation which concerns on 2nd Embodiment.

Next, an embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
First, the telephone system 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing a configuration of a telephone system.
The telephone system 1 is composed of a general business phone system or a PBX system as a whole, and is composed of a telephone control device 10 and a plurality of extension telephone terminals 20 as shown in FIG.

The telephone control device 10 is composed of a main unit of a business phone system and a PBX device of a PBX system, is connected to a telephone network NW via a communication line L1, and is a plurality of extension telephone terminals that are internally accommodated via an extension line L2. This is a device for exchanging and connecting 20 to the telephone network NW.
According to the present invention, by cooperating with the mobile phone terminal 30 via the telephone network NW, the call switching of the external line call via the telephone network NW is performed between the extension telephone terminal 20 and the mobile phone terminal 30. It is a thing. Further, by performing wireless communication between the extension telephone terminal 20 and the mobile phone terminal 30, switching control information required for call switching is exchanged.

Specific examples of the telephone network NW include an IP telephone network, PSTN (Public Switched Telephone Network), and ISDN (Integrated Services Digital Network). Further, it is assumed that the telephone network NW also includes a mobile phone network that connects to the mobile phone terminal 30 via a wireless line to realize a telephone call.

[Telephone control device]
As shown in FIG. 1, the telephone control device 10 includes a network interface unit (hereinafter referred to as a network I / F unit) 11, an extension interface unit (hereinafter referred to as an extension I / F unit) 12, a storage unit 13, and a control unit. It has 14.

The network I / F unit 11 connects to the telephone network NW via the communication line L1 and transmits / receives various call control messages and voices.
The extension I / F unit 12 transmits and receives various control commands and voices to and from the plurality of extension telephone terminals 20 via the extension line L2.

The storage unit 13 is composed of a storage device such as a hard disk or a semiconductor memory, and stores various call control data 13A and a program 13P used for call control in the telephone control device 10. The call control data 13A is control data for performing call control such as incoming / outgoing calls and calls related to the extension telephone terminal 20, and also includes switching control information used for call switching control described later. The program 13P is a program that realizes various processing units used for call control by cooperating with the CPU of the control unit 14. The program 13P is read from an external device or recording medium connected to the telephone control device 10 and stored in the storage unit 13 in advance.

The control unit 14 has a CPU and its peripheral parts, and executes the program 13P read from the storage unit 13 to cooperate with the CPU and the program 13P, so that various types used for call control and call switching control processing are performed. Realize the processing unit of. A call control unit 14A is provided as a main processing unit realized by the control unit 14.

The call control unit 14A exchanges call control messages with the telephone network NW via the network I / F unit 11, and the extension telephone terminal 20 is based on the call control data 13A stored in the storage unit 13. It has a function to control calls such as incoming / outgoing calls and calls. The general call control executed by the call control unit 14A is the same as that of the business phone system and the PBX system, and detailed description thereof will be omitted here.

Further, as a function related to call switching control, the call control unit 14A sets the telephone network NW in response to a call switching request from the mobile phone terminal 30 which is the call switching destination received by the extension telephone terminal 20 via wireless communication. A telephone connected to the target extension telephone terminal 20 as a call switching source via the telephone control device 10 according to the function of calling the mobile phone terminal 30 via an outside line and the response of the mobile phone terminal 30 to the outside line call. It has a function of switching and connecting an outside line call with the network NW from a call with the target extension telephone terminal 20 to a call with the mobile phone terminal 30.

Specifically, the call control unit 14A acquires a mobile phone number indicating the mobile phone number of the mobile phone terminal 30 from the call switching request from the mobile phone terminal 30 which is the call switching destination, and uses the acquired mobile phone number. The function of calling the mobile phone terminal 30 to an outside line and the system telephone number indicating the outgoing telephone number for call switching in response to the call switching request are used as the call switching permission for the call switching request via the extension telephone terminal 20. And, in response to the call switching request, the function of returning to the mobile phone terminal 30 and the non-target line call with the telephone network NW connected to the target extension telephone terminal 20 which is the call switching source via the telephone control device 10 It has a function of holding and a function of releasing the hold of the target non-line call and switching to the external line call with the mobile phone terminal 30 according to the response of the mobile phone terminal 30 to the outside line call.

[Extension telephone terminal]
Next, the configuration of the extension telephone terminal 20 will be described with reference to FIG. FIG. 2 is a block diagram showing a configuration of an extension telephone terminal.
As shown in FIG. 2, the extension telephone terminal 20 includes an extension interface unit (hereinafter referred to as an extension I / F unit) 21, a wireless communication unit 22, a call unit 23, a storage unit 24, and a terminal control unit 25. ..

The extension I / F unit 21 transmits and receives various control commands and voices to and from the telephone control device 10 via the extension line L2.
The wireless communication unit 22 forms a wireless line L3 with the mobile phone terminal 30 via the wireless line L3 based on a wireless communication method such as Bluetooth (Bluetooth: registered trademark) or wireless LAN, and connects the wireless line L3. By performing wireless communication via wireless communication, switching control information used for call switching control is exchanged.

The main switching control information used for call switching control is a mobile phone number and a system phone number. The mobile phone number is a telephone number of the mobile phone terminal 30, and is used as a destination telephone number when calling the mobile phone number from the telephone control device 10 to an outside line. The system telephone number is a telephone number of the telephone control device 10, and is used as a caller's telephone number when calling a mobile phone number from the telephone control device 10 to an outside line.

The call unit 23 outputs the sound received from the telephone control device 10 via the extension I / F unit 21 from the speaker, and outputs the sound input from the microphone to the telephone control device 10 via the extension I / F unit 21. By transmitting, a voice call is made on the extension telephone terminal 20.
The storage unit 24 is composed of a storage device such as a semiconductor memory, and stores various processing data and programs used for terminal control processing in the extension telephone terminal 20.

The terminal control unit 25 has a CPU and its peripheral parts, executes a program read from the storage unit 24, and executes the terminal control process by making the CPU and the program cooperate with each other.
The terminal control process includes a process of transferring a call switching request received from the mobile phone terminal 30 via the wireless communication unit 22 to the telephone control device 10 via the extension I / F unit 21 and a process of transferring the extension I / F unit 21 to the telephone control device 10. This includes a process of transferring the call switching permission notified from the telephone control device 10 to the mobile phone terminal 30 via the wireless communication unit 22.

[Mobile phone terminal]
Next, the configuration of the mobile phone terminal 30 will be described with reference to FIG. FIG. 3 is a block diagram showing a configuration of a mobile phone terminal.
As shown in FIG. 3, the mobile phone terminal 30 includes a network interface unit (hereinafter referred to as a network I / F unit) 31, a wireless communication unit 32, a telephone unit 33, a storage unit 34, and a terminal control unit 35. ..

The network I / F unit 31 connects to the telephone network NW via the communication line L4, and transmits and receives various call control messages and voices.
The wireless communication unit 32 forms a wireless line L3 with the extension telephone terminal 20 based on a wireless communication method such as Bluetooth or wireless LAN, and performs wireless communication via the wireless line L3 to control call switching. Exchange the switching control information to be used. The main switching control information used for call switching control is a mobile phone number and a system phone number.

The call unit 33 outputs the voice received from the telephone network NW via the network I / F unit 31 from the speaker, and transmits the voice input from the microphone to the telephone network NW via the network I / F unit 31. As a result, a voice call is made on the mobile phone terminal 30.
The storage unit 34 is composed of a storage device such as a semiconductor memory, and stores various processing data and programs used for processing of call control and call switching control in the mobile phone terminal 30.

The terminal control unit 35 has a CPU and its peripheral parts, executes a program read from the storage unit 34, and causes the CPU and the program to cooperate with each other to execute call control and call switching control.
The call control includes a process of performing call control such as incoming / outgoing calls and calls related to the mobile phone terminal 30 based on the control data of the storage unit 34.

The call switching control is a process of transmitting a call switching request from the wireless communication unit 32 to the extension telephone terminal 20 via the wireless line L3 according to the user operation, and is returned from the extension telephone terminal 20 in response to the call switching request. For processing in which the wireless communication unit 32 receives the call switching permission via the wireless line L3, and for an outside line call originating from the system telephone number notified from the telephone network NW via the network I / F unit 31. On the other hand, it includes a process of immediately and automatically responding. These call switching controls may be realized by executing the dedicated application downloaded from the telephone network NW in advance and stored in the storage unit 34 on the terminal control unit 35.

[Operation of the first embodiment]
Next, the call switching operation of the telephone system 1 according to the present embodiment will be described with reference to FIG. FIG. 4 is a sequence diagram showing a call switching operation according to the first embodiment.

The extension telephone terminal 20 is in an outside line call with the other party telephone device 40 connected to the telephone network NW via the telephone control device 10 (step S100), and is between the extension telephone terminal 20 and the user's mobile phone terminal 30. It is assumed that the wireless line L3 is formed in (step S101). The formation of the wireless line L3 may be performed after the call switching operation in step S102.
In this state, when switching the outside line call of the extension telephone terminal 20 to the own mobile phone terminal 30, the user performs the call switching operation on the mobile phone terminal 30 (step S102).

The mobile phone terminal 30 transmits a call switching request including its own mobile phone number to the extension telephone terminal 20 via the wireless line L3 in response to the call switching operation of the user (step S103).
When the extension telephone terminal 20 receives a call switching request from the mobile phone terminal 30 via the wireless line L3, the extension telephone terminal 20 transfers the call switching request to the telephone control device 10 via the extension line L2 (step S104).

The telephone control device 10 acquires the mobile phone number included in the call switching request as the switching destination telephone number in response to the call switching request from the mobile phone terminal 30 transferred from the extension telephone terminal 20, and makes a call for switching the call. The call switching permission including the system telephone number, which is a telephone number, is returned to the extension telephone terminal 20 via the extension line L2 (step S105).

When the extension telephone terminal 20 receives the call switching permission from the telephone control device 10 via the extension line L2, the extension telephone terminal 20 transfers the call switching permission to the mobile phone terminal 30 via the wireless line L3 (step S106).
When the mobile phone terminal 30 receives the call switching permission from the extension telephone terminal 20 via the wireless line L3, the mobile phone terminal 30 acquires the system telephone number included in the call switching permission as the outgoing telephone number for call switching, and the outgoing telephone number. Starts listening for an outside line call from (step S107).

On the other hand, in response to the call switching request, the telephone control device 10 identifies the extension telephone terminal 20 that is the notification source of the call switching request as the target extension telephone terminal 20 of the call switching source (step S110), and refers to the telephone network NW. Then, an outside line call is executed with the switching destination telephone number as the call destination and the system telephone number as the caller (step S111).

The mobile phone terminal 30 confirms the caller in response to the outside line call from the telephone network NW (step S112), and when the caller matches the system telephone number notified by the call switching permission, the mobile phone terminal 30 responds to the outside line call. Immediately automatically responds (step S113). As a result, a response is transmitted from the mobile phone terminal 30 to the telephone control device 10 via the telephone network NW (step S114).

The telephone control device 10 switches and connects the call with the target extension telephone terminal 20 of the switching source specified in step S110 to the call with the mobile phone terminal 30 according to the response from the mobile phone terminal 30 (step S115).
As a result, the other party telephone device 40 and the mobile phone terminal 30 start an outside line call via the telephone control device 10 (step S116). After that, the telephone control device 10 disconnects the call of the target extension telephone terminal 20 (step S117), and accordingly, the target extension telephone terminal 20 is in the end-of-call state (step S118), and a series of call switching operations are performed. finish. In this case, the call disconnection in step S117 may be executed at any timing as long as it is in step S115 or later.

In this sequence, since the time required from step S110 to step S114 is extremely short, the outside line hold and the outside line hold release of the outside line call before switching are not performed. As a result, it is possible to seamlessly switch the call without making the other party aware of the call switching period. Further, the outside line hold and the outside line hold may be released, but even in that case, the hold sound is not transmitted to the other party telephone device 40 in order to make the other party not aware of the call switching.

[Effect of the first embodiment]
As described above, in the present embodiment, the extension telephone terminal 20 notifies the telephone control device 10 of the call switching request from the mobile phone terminal 30 which is the call switching destination received via the wireless communication, and responds to the call switching request. Correspondingly, the call switching permission notified from the telephone control device 10 is transmitted to the mobile phone terminal 30 via wireless communication, and the telephone control device 10 sends the mobile phone terminal 30 via the telephone network NW in response to the call switching request. In response to the outside line call and the response of the mobile phone terminal 30 to the outside line call, the outside line call with the telephone network NW connected to the target extension telephone terminal 20 which is the notification source of the call switching request is transferred to the target extension telephone terminal 20. The call is switched from the above call to the call with the mobile phone terminal 30.

As a result, the user simply performs the call switching operation on the mobile phone terminal 30, and the switching control information used for the call switching control is transmitted between the mobile phone terminal 30 and the telephone control device 10 via the extension telephone terminal 20. The extension telephone terminal 20 that is automatically exchanged and relays and transfers the switching control information is automatically specified as the target extension telephone terminal 20 to be switched, and the outside line call connected to the target extension telephone terminal 20 is The call is automatically switched to the mobile phone terminal 30.

Therefore, unlike the above-mentioned conventional technology, it is not necessary to read the QR code using the mobile phone terminal 30, and the work load of the user required for switching the call can be significantly reduced, and the mobile phone from the extension telephone terminal 20 can be used. It is possible to seamlessly and easily switch the outside line call to the terminal 30.
In addition, it is possible to switch between external line calls simply by installing the hardware for wireless communication with the mobile phone terminal 30 on the extension telephone terminal 20, and a UC server for extension as in the conventional technology. Since there is no need to use a docking station, the hardware scale will not be significantly increased. Further, as for the call switching control in the telephone control device 10, the existing call transmission control can be used, and it is possible to avoid a large increase in software new development work.

[Second Embodiment]
Next, the telephone system 1 according to the second embodiment of the present invention will be described.
In the first embodiment, the case of switching the outside line call from the extension telephone terminal 20 to the mobile phone terminal 30 has been described as an example. In this embodiment, a case of switching an outside line call from the mobile phone terminal 30 to the extension telephone terminal 20 will be described.

In the present embodiment, the terminal control unit 25 of the extension telephone terminal 20 notifies the telephone control device 10 of the call switching request in response to the call switching operation, and the extension call from the telephone control device 10 in response to the call switching request. It has a function to respond automatically.

Further, the control unit 14 of the telephone control device 10 calls the target extension telephone terminal 20 which is the notification source of the call switching request in response to the call switching request from the extension telephone terminal 20, and the target extension telephone terminal 20 for the extension call. In response to the automatic response of, an external line call with the telephone network NW connected to the mobile phone terminal 30 corresponding to the target extension telephone terminal 20 via the telephone control device 10 is performed from the call with the mobile phone terminal 30 to the target extension. It has a function of switching and connecting to a call with the telephone terminal 20.
The other configurations of the telephone system 1 according to the present embodiment are the same as those in FIG. 1 described above, and detailed description thereof will be omitted here.

[Operation of the second embodiment]
Next, the call switching operation of the telephone system 1 according to the present embodiment will be described with reference to FIG. FIG. 5 is a sequence diagram showing a call switching operation according to the second embodiment.

It is assumed that the mobile phone terminal 30 is in an outside line call with the other party telephone device 40 connected to the telephone network NW via the telephone control device 10 (step S200).
In this state, when the outside line call of the mobile phone terminal 30 is switched to the extension phone terminal 20 of its own, the user performs the call switching operation on the extension phone terminal 20 (step S201). The extension telephone terminal 20 notifies the telephone control device 10 of the call switching request via the extension line L2 in response to the call switching operation of the user (step S202).

In response to the call switching request from the extension telephone terminal 20, the telephone control device 10 specifies the extension telephone terminal 20 that is the source of the call switching request as the target extension telephone terminal 20 to be the call switching destination, and also specifies the target extension. The mobile phone terminal 30 corresponding to the telephone terminal 20 is specified as the target mobile phone terminal 30 to be the call switching source, and the outside line call connected to the target mobile phone terminal 30 is specified as the target call to be switched (step). S210).

At this time, with respect to the mobile phone terminal 30, the mobile phone terminal 30 of the user of the target extension telephone terminal 20 may be set in advance as the call control data 13A of the storage unit 13. Further, the mobile phone number of the mobile phone terminal 30 may be registered in the operation key of the call switching operation of the extension telephone terminal 20, and the mobile phone number of the mobile phone terminal 30 may be notified by the call switching request. Further, if there is a history of switching the outside line call from the extension telephone terminal 20 to the mobile phone terminal 30 by the call switching operation of FIG. 4, the target mobile phone terminal 30 may be specified based on the history information. .. Further, as in the call switching operation of FIG. 4, the mobile phone terminal 30 in which the target extension telephone terminal 20 and the wireless line L3 are formed during the call switching operation may be specified as the target mobile phone terminal 30.

The telephone control device 10 identifies the target call (step S210) and calls the target extension telephone terminal 20 via the extension line L2 (step S211).
The target extension telephone terminal 20 immediately and automatically responds to the extension call from the telephone control device 10 (step S212). As a result, a response is transmitted from the target extension telephone terminal 20 to the telephone control device 10 via the extension line L2 (step S213).

The telephone control device 10 switches and connects the outside line call specified in step S210 from the call with the mobile phone terminal 30 to the call with the target extension telephone terminal 20 according to the response from the target extension telephone terminal 20 (step S214). ).
As a result, the other party telephone device 40 and the target extension telephone terminal 20 start an outside line call via the telephone control device 10 (step S215). After that, the telephone control device 10 disconnects the outside line call of the mobile phone terminal 30 (step S216), and accordingly, the mobile phone terminal 30 is in the end-of-call state (step S217), and a series of call switching operations is completed. To do. In this case, the call disconnection in step S216 may be executed at any timing as long as it is in step S214 or later.

Also in this sequence, since the time required from step S210 to step S214 is extremely short, the outside line hold and the outside line hold release of the outside line call before switching are not performed. Even when the outside line is held, the holding sound is not transmitted as in the first embodiment.

[Effect of the second embodiment]
As described above, in the present embodiment, the extension telephone terminal 20 notifies the telephone control device 10 of the call switching request in response to the call switching operation, and automatically calls the extension from the telephone control device 10 in response to the call switching request. In response, the telephone control device 10 calls the target extension telephone terminal 20 which is the notification source of the call switching request in response to the call switching request from the extension telephone terminal 20, and automatically responds to the extension call at the target extension telephone terminal 20. Depending on the situation, an outside line call with the telephone network NW connected to the target extension telephone terminal 20 and the corresponding mobile phone terminal 30 via the telephone control device 10 can be performed from a call with the mobile phone terminal 30 to the target extension telephone terminal 20. It is designed to switch and connect to a call with.

As a result, the user simply performs a call switching operation on the extension telephone terminal 20, and the extension telephone terminal 20 is automatically identified as the target extension telephone terminal 20 to be switched and corresponds to the target extension telephone terminal 20. The outside line call connected to the mobile phone terminal 30 is automatically switched to the target extension phone terminal 20.

Therefore, unlike the above-mentioned conventional technology, it is not necessary to read the QR code using the mobile phone terminal 30, and the work load of the user required for switching the call can be significantly reduced, and the mobile phone from the extension telephone terminal 20 can be used. It is possible to seamlessly and easily switch the outside line call to the terminal 30.
Moreover, since it is not necessary to use a UC server or a docking station for extension as in the prior art, the hardware scale is not significantly increased. Further, as for the call switching control in the telephone control device 10, the existing call transmission control can be used, and it is possible to avoid a large increase in software new development work.

[Extension of Embodiment]
Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the structure and details of the present invention within the scope of the present invention. In addition, each embodiment can be implemented in any combination within a consistent range.

1 ... Telephone system, 10 ... Telephone control device, 11 ... Network I / F unit (network interface unit), 12 ... Extension I / F unit (extension interface unit), 13 ... Storage unit, 14 ... Control unit, 20 ... Extension Telephone terminal, 21 ... extension I / F unit (extension interface unit), 22 ... wireless communication unit, 23 ... telephone unit, 24 ... storage unit, 25 ... terminal control unit, 30 ... mobile phone terminal, 31 ... network I / F Unit (network interface unit), 32 ... wireless communication unit, 33 ... call unit, 34 ... storage unit, 35 ... terminal control unit, 40 ... remote telephone device, L1 ... communication line, L2 ... extension line, L3 ... wireless line, L4 ... Communication line, NW ... Telephone network.

Claims (8)

A telephone system including an extension telephone terminal and a telephone control device for exchanging and connecting the extension telephone terminal to a telephone network.
The extension telephone terminal notifies the telephone control device of a call switching request from the mobile phone terminal to which the call is switched received via wireless communication, and the telephone control device notifies the telephone control device in response to the call switching request. A terminal control unit for transmitting a call switching permission to the mobile phone terminal via the wireless communication is provided.
The telephone control device calls the mobile phone terminal via the telephone network in response to the call switching request, and responds to the outside line call by the mobile phone terminal at the notification source of the call switching request. A telephone system including a control unit that switches and connects an outside line call with the telephone network connected to a target extension telephone terminal from a call with the target extension telephone terminal to a call with the mobile phone terminal. .. A telephone system including an extension telephone terminal and a telephone control device for exchanging and connecting the extension telephone terminal to a telephone network.
The extension telephone terminal includes a terminal control unit that notifies the telephone control device of a call switching request in response to a call switching operation and automatically answers an extension call from the telephone control device in response to the call switching request.
The telephone control device makes an extension call to the target extension telephone terminal that is the notification source of the call switching request in response to the call switching request, and responds to the automatic response of the target extension telephone terminal to the extension call. Control to switch and connect an outside line call with the telephone network connected to the mobile phone terminal corresponding to the telephone terminal via the telephone control device from a call with the mobile phone terminal to a call with the target extension telephone terminal. A telephone system characterized by having a department. A telephone control device used in a telephone system that exchanges and connects an extension telephone terminal to a telephone network.
An extension interface unit that accommodates extension telephone terminals and
It is provided with a control unit that controls an outside line call via the telephone network by the extension telephone terminal.
The control unit calls the mobile phone terminal to an outside line via the telephone network in response to a call switching request from the mobile phone terminal to be the call switching destination received by the extension telephone terminal via wireless communication. In response to the response of the mobile phone terminal to the outside line call, the outside line call with the telephone network connected to the target extension telephone terminal to be the call switching source via the telephone control device is transferred to the target extension telephone terminal. A telephone control device characterized by switching and connecting from a call made in the above to a call made with the mobile phone terminal. A telephone control device used in a telephone system that exchanges and connects an extension telephone terminal to a telephone network.
An extension interface unit that accommodates extension telephone terminals and
It is provided with a control unit that controls an outside line call via the telephone network by the extension telephone terminal.
Among the extension telephone terminals, the target extension telephone terminal is called by an extension in response to a call switching request notified from the target extension telephone terminal that is the call switching source, and the target extension telephone terminal automatically responds to the extension call. Correspondingly, the outside line call with the telephone network connected to the mobile phone terminal to be the call switching source via the telephone control device is switched from the call with the mobile phone terminal to the call with the target extension telephone terminal. A telephone control device characterized by being connected. An extension telephone terminal used in a telephone system equipped with a telephone control device for exchanging and connecting an extension telephone terminal to a telephone network.
The telephone control device is notified of a call switching request from a mobile phone terminal that is a call switching destination received via wireless communication, and the mobile phone receives a call switching permission notified from the telephone control device in response to the call switching request. An extension telephone terminal characterized by transmitting to a telephone terminal via the wireless communication. An extension telephone terminal used in a telephone system equipped with a telephone control device for exchanging and connecting an extension telephone terminal to a telephone network.
An extension telephone terminal characterized in that a call switching request is notified to the telephone control device in response to a call switching operation, and an extension call from the telephone control device in response to the call switching request is automatically answered. A mobile phone terminal used in a telephone system equipped with a telephone control device for exchanging and connecting an extension telephone terminal to a telephone network.
A target extension telephone terminal that is connected to the telephone network and is making an outside line call is connected via wireless communication, and a call switching request is transmitted to the target extension telephone terminal via the wireless communication.
In response to the call switching request, the call switching permission notified from the telephone control device is received via the wireless communication, and the standby for an outside line call from the telephone control device is started.
It is characterized in that by receiving the outside line call from the telephone control device via the telephone network and answering the outside line call, a call switched and connected from the outside line call with the target extension telephone terminal is started. Mobile phone terminal. A call switching program executed in a mobile phone terminal used in a telephone system equipped with a telephone control device for exchanging and connecting an extension telephone terminal to a telephone network.
A step of connecting to a target extension telephone terminal that is connected to the telephone network and making an outside line call via wireless communication, and transmitting a call switching request to the target extension telephone terminal via the wireless communication.
A step of receiving a call switching permission notified from the telephone control device in response to the call switching request via the wireless communication and starting waiting for an outside line call from the telephone control device.
By receiving the outside line call from the telephone control device via the telephone network and answering the outside line call, the computer is provided with a step of starting a call switched from the outside line call with the target extension telephone terminal. Call switching program to be executed.

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