JP2020072355A - Call system, control server, and control method thereof - Google Patents

Abstract

To provide a mobile phone terminal that is in a call via a private branch exchange, which can easily hold and release a call.SOLUTION: A private branch exchange (PBX) 21 includes incoming call transfer means that transfers an incoming call to an extension terminal sent from a caller telephone 11 to a smartphone 41, hold means that holds the call with the caller telephone 11, and hold release means that releases the hold of the call held by the holding means. A control server 31 includes request receiving means that receives a hold request and a hold release request transmitted from the smartphone 41, and control means that transmits a control signal according to the hold request and the hold release request received by the request receiving means to the PBX 21, and controls the call hold by the hold means of the PBX 21 and the hold release by the hold release means.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a call system, and in particular, for controlling a private branch exchange so that a call can be held and released for a call transferred to a mobile phone terminal (for example, a smartphone or a feature phone) via a private branch exchange (PBX). Regarding the system. The present invention also relates to a control server and a control method for the call system.

  In recent years, many companies have installed a private branch exchange (PBX) accommodating a plurality of extension terminals, and use a dial-in service to call a specific extension from the outside by using a telephone number assigned to each extension. In addition, a call forwarding function that forwards incoming calls to a specific extension to a mobile phone or smartphone is also used.

  When answering an incoming call, the call may be temporarily put on hold. If the telephone used for the call is a so-called business phone that is connected to the private branch exchange, a hold instruction can be issued to the private branch exchange by pressing a hold button prepared in advance on the telephone. However, if the call is transferred to the smartphone via the private branch exchange, the smartphone (telephone application) generally does not have a hold button, so the call cannot be put on hold (cannot issue a hold instruction to the private branch exchange). Even if it can be put on hold, it is often the case that the microphone function of the smartphone is turned off.

  Patent Document 1 describes a system for holding a call based on a DTMF signal indicating a holding special number transmitted from a mobile phone during a call. It is difficult to say that it is convenient because it is necessary to dial the number for holding (special number for holding) using the keypad.

Japanese Patent No. 5480528

  An object of the present invention is to make it possible to easily hold and release a call in a mobile phone terminal that is in a call via a private branch exchange.

  A call system according to the present invention includes an incoming call transfer means for transferring an incoming call from an originating telephone set to an extension terminal to a mobile telephone terminal through a telephone network, a holding means for holding a call with the originating telephone set, and the above-mentioned holding means. A private branch exchange having hold releasing means for releasing the hold of the call held by the holding means, request receiving means for receiving a hold request and a hold release request transmitted from the mobile phone terminal through a data communication network, and the request receiving Control means for transmitting a control signal according to the hold request and the hold release request received by the means to the private branch exchange through the data communication network, and controlling the call hold by the hold means of the private branch exchange and the hold release by the hold release means. Including a control server provided.

  The present invention also provides a control server that constitutes a call system. The control server according to the present invention comprises an incoming call transfer means for transferring an incoming call from an originating telephone set to an extension terminal to a mobile telephone terminal through a telephone network, a holding means for holding a call with the originating telephone set, and the above-mentioned holding means. A request for receiving a hold request and a hold release request transmitted from the mobile phone terminal through the data communication network, which is connected to a private branch exchange having a hold release means for releasing the hold of the call held by the hold means. A control signal according to the receiving means and the hold request and the hold release request received by the request receiving means is transmitted to the private branch exchange through the data communication network, and the call holding and the hold release by the hold means of the private branch exchange are held. Control means for controlling the release is provided.

  The present invention also provides the control method of the control server described above.

  In this specification, a mobile phone means a small information device that can be connected to both a telephone network and a data communication network, and includes a communication device, an input device (touch panel, button), a display device, a microphone, a speaker, and a computing device. , Memory, storage device, etc. Basic software (OS) and application software are installed in a storage device of a mobile phone terminal, and various functions including a telephone function are realized according to the installed application software. Mobile phone terminals include smartphones and feature phones.

  The telephone number of the mobile telephone terminal is associated with the telephone number of the extension terminal as the transfer destination telephone number, whereby the incoming call transfer means of the private branch exchange transfers the incoming call of the extension terminal to the mobile telephone terminal through the telephone network. The correspondence between the transfer destination telephone number and the extension telephone number for call transfer can be set (stored) in the private branch exchange in advance.

  According to the present invention, the processing (function) for holding and releasing the hold of the private branch exchange is instructed from the mobile phone terminal. Since the holding and releasing instructions from the mobile phone terminal are issued through the data communication network (for example, the Internet) instead of the telephone network, it is not necessary to use the DTMF (Dual-Tone Multi-Frequency) signal. It is possible to eliminate the need to directly dial the hold number or the hold release number using the keypad, and it is possible to easily issue a call hold and hold release instruction using the mobile phone terminal in the call via the private branch exchange.

  The holding and releasing instructions from the mobile phone terminal are not directly sent from the mobile phone terminal to the private branch exchange, but are sent to the private branch exchange via the control server. That is, an instruction set for controlling the hold processing and hold release processing of the private branch exchange is prepared in the control server. Even if there are private branch exchanges made by various manufacturers and the instruction sets differ from each other, it is possible to cope with them.

  Preferably, the private branch exchange includes call status notification means for notifying the control server of a change in the call status indicating that the call is put on hold and that the hold is released. There is provided a screen transition instruction transmitting means for transmitting a screen transition instruction to the mobile phone terminal in response to a change in the call status notified by the call status notification means of the private branch exchange. A screen corresponding to the current call state (on hold or in a call) can be displayed on the mobile phone terminal.

  The present invention also provides a mobile phone terminal for instructing a private branch exchange to hold and release the hold. A mobile phone terminal according to the present invention comprises an incoming call transfer means for transferring an incoming call from an originating telephone set to an extension terminal to a portable telephone terminal through a telephone network, a holding means for holding a call with the originating telephone set, and a holding means. Request for receiving a hold request and a hold release request, which are connected through a telephone network to a private branch exchange having a hold release means for releasing the hold of the call held by the hold means, and which are transmitted from the mobile phone terminal through a data communication network A control signal according to the receiving means and the hold request and the hold release request received by the request receiving means is transmitted to the private branch exchange through the data communication network, and the call holding and the hold release by the hold means of the private branch exchange are held. Control server including control means for controlling release Connected through the data communication network, displaying a hold button for transmitting a hold request to the control server through the data communication network during a call with the call source telephone, and the call origination telephone. A button display means is provided for displaying a hold release button for transmitting a hold release request to the control server through the data communication network during a call hold with.

  The present invention also provides a program suitable for controlling the mobile phone terminal.

It is a block diagram showing a schematic structure of a telephone system. It is a flow chart which shows a flow of processing of a telephone system. It is a flow chart which shows a flow of processing of a telephone system. It is a flow chart which shows a flow of processing of a telephone system. The display screen of a smart phone is shown. The display screen of a smart phone is shown.

  FIG. 1 is a block diagram showing a schematic configuration of a corporate communication system.

  The corporate call system 1 is a private branch exchange (hereinafter referred to as PBX (Private Branch eXchanger)) that transfers a call from a calling telephone 11 to a dial-in number (fixed telephone) to a smartphone (may be a feature phone) 41. 21) and a control server 31 for controlling the call holding process and the hold releasing process in the PBX 21.

  The telephone 11, the PBX 21, and the smartphone 41 can mutually perform voice communication via the telephone network 2. The telephone 11, the PBX 21, and the smartphone 41 all have a unique telephone number (contractor line number), and can call each other by inputting the telephone number to make a call. A telephone application program (telephone application) is installed in the smartphone 41, and the smartphone 41 functions as a telephone (mobile phone) by this telephone application and operates as described in detail below.

  The PBX 21, the control server 31, and the smartphone 41 can also perform data communication with each other through the Internet 3 (which may include an intranet or may be an intranet). The telephone 11 may also be capable of data communication via the Internet 3.

  The internet can be used for part or all of the telephone network 2 (so-called IP telephone). However, since circuit switching is used for telephone (call) and packet switching is used for data communication, the communication models of voice communication and data communication are different from each other.

  The PBX 21 includes a memory 22, and the memory 22 stores an extension number, a dial-in number, and a transfer destination number for each of a plurality of extension terminals (not shown) connected (accommodated) to the PBX 21. FIG. 1 shows the setting data stored in the memory 22 for one extension terminal. Here, the extension number 2010 and the dial-in number 03-bbbb-bbbb are set to a specific extension terminal, The phone number 090-dddd-dddd of the smartphone 41 is set as the transfer destination number (stored in the memory 22). An extension call or an outside call with the extension number 2010 or the dial-in number 03-bbbb-bbbb as the called number is transferred to the smartphone 41 according to the transfer destination number stored in the memory 22. Note that it is not always necessary to connect a physical extension terminal to the PBX 21 by setting the call transfer to the smartphone 41.

  Further, the PBX 21 may be a so-called IP-PBX that provides the same function as the conventional PBX on an IP (Internet Protocol) network, or may be a so-called cloud PBX that provides the PBX function on the Internet.

  2 and 3 are flowcharts showing the flow of processing of the call system 1 when a call made from the caller telephone 11 to one of the extension terminals (dial-in number) stored in the PBX 21 is put on hold.

  When a call is made to the dial-in number of a specific extension terminal stored in the PBX 21 using the telephone 11 (step 51), the call is received by the PBX 21 through the telephone network 2. The calling number (telephone number of the telephone set 11) and the called number (dial-in number) are notified from the telephone set 11 to the PBX 21 through the telephone network 2.

  As described above, the extension number, the dial-in number and the transfer destination number are stored in the memory 22 of the PBX 21 in association with each other (see FIG. 1), and the called number (dial-in number) notified from the telephone 11 is stored in the memory 22. Incoming call transfer processing for the transfer destination number associated with and stored in the memory 22 is performed. In this embodiment, since the telephone number of the smartphone 41 is stored in the memory 22 of the PBX 21 as the transfer destination number, the PBX 21 transfers the incoming call from the telephone 11 to the smartphone 41.

  An outgoing call from the telephone 11 via the PBX 21 is received in the smartphone 41 (step 52). The phone application starts and the incoming call is notified by sound, light, vibration, etc. When the called party goes off-hook (takes a call) (step 53), the PBX 21 performs connection processing. Call connections (calls) 54a and 54b via the telephone network 2 and the PBX 21 are established between the source telephone 11 and the smartphone 41.

  FIG. 5 shows a call screen (screen according to a phone application) of the smartphone 41 when the call connections 54a and 54b between the calling telephone 11 and the smartphone 41 are established.

  On the call screen of the smartphone 41, a calling number (phone number of the calling telephone 11) 41a, a face image 41b of the caller stored in the memory of the smartphone 41 in association with the calling number, and a company name and a name 41c are displayed. Is displayed. When the telephone number unique to the PBX 21 is notified to the smartphone 41 via the PBX 21, the telephone number of the source telephone 11 is passed via the telephone directory server (not shown) connected to the Internet 3. The calling number 41a may be transmitted to the smartphone 41. Further, in addition to the calling number 41a, the face image 41b of the caller associated with the calling number 41a and the data representing the company name and the name 41c may be transmitted from the telephone directory server to the smartphone 41. In this case, Does not need to store the face image 41b of the caller and the company name and name 41c in the memory of the smartphone 41. In any case, when the telephone directory server is used, the PBX 21 notifies not only the smartphone 41 but also the telephone directory server of the calling number and the called number.

  A call end button 41d and a hold button 41e are further displayed on the call screen. The call end button 41d and the hold button 41e may be displayed on the call screen when, for example, a menu button (not shown) is tapped.

  The call end button 41d is tapped to hang up (hook on). The details of the process using the hold button 41e will be described below.

  The hold button 41e is used when a callee who is talking to the caller using the smartphone 41 temporarily suspends the call while maintaining the call connection (self-hold). As will be described below, the hold function provided in the PBX 21 is used instead of simply turning off the microphone of the smartphone 41 (inhibiting voice input operation).

  When the callee operating the smartphone 41 taps the hold button 41e on the call screen (step 55), the hold request is transmitted from the smartphone 41 to the control server 31 through the Internet 3. Further, the control server 31 transmits a hold command for controlling the PBX 21 to the PBX 21 via the Internet 3 according to the received hold request. The hold request and hold command include the telephone numbers of the originating telephone set 11 and the smartphone 41 in order to identify the call connections 54a and 54b. The device ID or the like may be included instead of the telephone number.

  Upon receiving the hold command, the PBX 21 executes the hold process for the call connections 54a and 54b specified by the hold command (step 57), and puts the call connection 54a between the caller telephone 11 and the PBX 21 into the hold state 61a. The hold state 61a is a state in which the voice from the caller telephone 11 and the voice from the smartphone 41 are cut off while maintaining the call connection. The call connection 61b (call state) between the PBX 21 and the smartphone 41 is maintained as it is.

  The PBX 21 also transmits to the originating telephone 11 voice such as hold voice and hold music that informs the caller that the call is on hold via the telephone network 2 (step 58).

  Further, the PBX 21 transmits the fact that the call between the PBX 21 and the source telephone 11 has been switched to the hold state 61a to the control server 31 via the Internet 3 (step 59). The control server 31 that has received the data indicating that the hold state 61a has been switched to transmits a hold screen transition instruction to the smartphone 41. The screen of the smartphone 41 is switched to the hold screen (step 60).

  FIG. 6 shows a display screen (hold screen) of the smartphone 41 after receiving the hold screen transition instruction from the control server 31. On the hold screen, the display of the hold button 41e displayed on the call screen (FIG. 5) described above disappears, and instead, the hold release button 41f newly appears.

  FIG. 4 is a flowchart showing the flow of processing of the call system 1 when releasing the hold.

  The hold release button 41f on the hold screen (FIG. 6) is tapped (step 62). A hold release request is transmitted from the smartphone 41 to the control server 31 via the Internet 3. The hold release command according to the hold release request is transmitted from the control server 31 to the PBX 21. The hold release request and the hold release command also include the telephone number of the originating telephone set 11 in order to identify the call connection 61a to be released.

  The PBX 21 which has received the hold release command executes the hold release processing (step 63). That is, the hold state between the caller telephone 11 and the PBX 21 is released, and the call connection (call state) 67a is restored. Further, the PBX 21 stops the voice transmission (step 64). Call connections 67a and 67b are reestablished between the source telephone 11 and the smartphone 41 via the telephone network 2 via the PBX 21.

  Further, the PBX 21 transmits to the control server 31 through the Internet 3 the fact that the call between the PBX 21 and the source telephone 11 has been switched from the hold state 61a to the call connection 67a (step 65). The control server 31 that has received the data indicating that the call connection 67a has been switched transmits a normal screen transition instruction to the smartphone 41. The screen of the smartphone 41 is switched again to the normal call screen (FIG. 5) (step 66, FIG. 5).

  As described above, the hold request (hold command) and the hold release request (hold release command) are sent from the smartphone 41 to the PBX 21 via the Internet 3 (data communication network) instead of the telephone network 2. It is not necessary to control the PBX 21 by directly dialing the hold number or the hold release number with the keypad, and the smartphone 41 can easily issue the hold instruction and the hold release instruction.

  In addition, the hold and release instructions from the smartphone 41 are not directly transmitted from the smartphone 41 to the PBX 21, but are transmitted to the PBX 21 via the control server 31. That is, the control server 31 is provided with an instruction set for controlling the hold process and the hold release process of the PBX 21. Even if there are PBX21 manufactured by various manufacturers and the instruction sets are different from each other, it is possible to immediately cope with it.

  In the above-described embodiment, the call screen (FIG. 5) is displayed according to the screen transition instruction transmitted from the control server 31 to the smartphone 41 according to the call state (step 59, step 65) transmitted from the PBX 21 to the control server 31. The hold screen (Fig. 6) is switched. The screens may be switched according to the tap of the hold button 41e (step 55) and the tap of the hold release button 41f (step 62) on the smartphone 41. In this case, it is not always necessary to send the call status from the PBX 21 to the control server 31.

1 Call system 2 Telephone network 3 Internet
11 telephone
21 Private branch exchange
22 memory
31 Control server
41 Smartphone (mobile phone terminal)

Claims (6)

Call transfer means for transferring an incoming call from the originating telephone set to the extension terminal to the mobile telephone terminal through the telephone network, holding means for holding the call to the originating telephone set, and a call held by the holding means. A private branch exchange having a hold releasing means for releasing the hold, a request receiving means for receiving a hold request and a hold releasing request transmitted from the mobile phone terminal through a data communication network, and a hold request received by the request receiving means. And a control server that transmits a control signal according to the hold release request to the private branch exchange through the data communication network, and controls the call hold by the hold means of the private branch exchange and the hold release by the hold release means.
Call system. The above private branch exchange
A call state notification means for notifying the control server of a change in call state indicating that the call is put on hold and that the hold is released;
The control server is
Screen transition instruction transmitting means for transmitting a screen transition instruction to the mobile phone terminal in response to a change in the call state notified by the call state notifying means of the private branch exchange,
The call system according to claim 1. Call transfer means for transferring an incoming call from the originating telephone set to the extension terminal to the mobile telephone terminal through the telephone network, holding means for holding the call to the originating telephone set, and a call held by the holding means. Is a control server connected to a private branch exchange having a hold releasing means for releasing the hold of
Request receiving means for receiving a hold request and a hold release request transmitted from the portable telephone terminal through the data communication network, and a control signal according to the hold request and the hold release request received by the request receiving means through the data communication network. A control means for transmitting to the private branch exchange and controlling the call hold by the holding means of the private branch exchange and the hold release by the hold release means;
Control server. Call transfer means for transferring an incoming call from the originating telephone set to the extension terminal to the mobile telephone terminal through the telephone network, holding means for holding the call to the originating telephone set, and a call held by the holding means. A method of controlling a control server connected to a private branch exchange, comprising:
The request receiving means receives the hold request and the hold release request transmitted from the mobile phone terminal through the data communication network,
The control means transmits a control signal according to the received hold request and hold release request to the private branch exchange through the data communication network, and controls call holding by the hold means of the private branch exchange and hold release by the hold release means. Equipped with means,
Control method of control server. Call transfer means for transferring an incoming call from the originating telephone set to the extension terminal to the mobile telephone terminal through the telephone network, holding means for holding the call to the originating telephone set, and a call held by the holding means. And a request receiving means for receiving a hold request and a hold release request transmitted from the mobile phone terminal through the data communication network and connected to a private branch exchange equipped with hold releasing means for releasing the hold. Control means for transmitting a control signal according to the hold request and the hold release request received by the private branch exchange to the private branch exchange through the data communication network, and controlling the call hold by the hold means of the private branch exchange and the hold release by the hold release means. Connected to the control server through the above data communication network A mobile phone terminals,
Displays a hold button for transmitting a hold request to the control server through the data communication network during a call with the caller telephone, and holds the call through the data communication network during call hold with the caller telephone. A button display means for displaying a hold release button for transmitting a release request to the control server,
Mobile phone terminal. Call transfer means for transferring an incoming call from the originating telephone set to the extension terminal to the mobile telephone terminal through the telephone network, holding means for holding the call to the originating telephone set, and a call held by the holding means. And a request receiving means for receiving a hold request and a hold release request transmitted from the mobile phone terminal through the data communication network and connected to a private branch exchange equipped with hold releasing means for releasing the hold. Control means for transmitting a control signal according to the hold request and the hold release request received by the private branch exchange to the private branch exchange through the data communication network, and controlling the call hold by the hold means of the private branch exchange and the hold release by the hold release means. Connected to the control server through the data communication network Is a program for controlling the mobile telephone terminal,
A hold button is displayed on the display screen during a call with the calling telephone, and when the hold button is selected, the hold request is transmitted to the control server through the data communication network,
The hold cancel button is displayed on the display screen while the call with the originator telephone is held, and when the hold cancel button is selected, the hold cancel request is transmitted to the control server through the data communication network. Control mobile phone terminals,
program.

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