JP2012213049A - Telephone controller, telephone system, and transfer control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a telephone service with stable speech quality from a telephone controller to a radio telephone terminal.SOLUTION: A transfer notice confirmation part 15 acquires transfer destination information from a transfer notice notified through a portable network 50 from a radio telephone terminal 20 according to an operation on a web screen displayed on a screen in the radio telephone terminal 20. A connection request confirmation part 16 confirms a speech path connection request from the radio telephone terminal 20 on the basis of call termination by telephone call origination in the portable network 50 performed in the radio telephone terminal 20 corresponding to the operation. A call control part 17 relays and connects a terminal speech path formed by a response to the radio telephone terminal 20 and an extension speech path formed by extension calling to an extension telephone terminal 19 corresponding to the transfer destination information after the acquisition of the transfer destination information and the confirmation of the speech path connection request.

Description

  The present invention relates to a telephone system, and more particularly to a telephone control technique for providing a telephone service similar to that of an extension telephone terminal to a radio telephone terminal connected to the telephone system via a mobile network.

  A telephone system including a telephone control device such as a button telephone device and a PBX that exchanges and connects a plurality of extension telephone terminals to a telephone network is provided for each extension telephone terminal connected to the telephone control device via an extension line. External line sharing, external line call, external line call, external line hold, external line call between internal line terminals using internal line, external line call using any internal line terminal using telephone network It has a function to provide various telephone services such as extension transfer for transferring the telephone number to other extension telephone terminals and use of various additional functions such as a telephone directory function.

Conventionally, in such a telephone system, there is a technology for connecting to a wireless telephone terminal such as a mobile telephone terminal via wireless communication, and providing a telephone service similar to that of an extension telephone terminal from the telephone controller to the wireless telephone terminal It has been proposed (see, for example, Patent Document 1).
In this technology, an extension telephone terminal connected to the telephone control device via an extension line is provided with a wireless communication function, and the wireless communication terminal is connected to the extension telephone terminal.

As a result, control messages and voice data can be exchanged between the telephone control device and the wireless telephone terminal, and various telephone services can be provided to the wireless telephone terminal in the same manner as the extension telephone terminal.
Therefore, the telephone service of the telephone system can be used from the wireless telephone terminal even in a place where the extension line from the telephone system does not reach, and without connecting to the telephone control device via the extension line. In addition, it is possible to eliminate the individual burden of external line charges due to wireless telephone terminals.

JP 2005-294969 A

  In such a conventional technology, as a telephone service for a wireless telephone terminal connected to a telephone control device via a mobile network, a voice call with a partner telephone terminal held by the telephone control device is performed, and the wireless telephone terminal is an extension telephone. When providing a call transfer service for transferring to a corresponding extension telephone terminal via a voice call with the terminal, a voice call is made between the extension telephone terminal and the wireless telephone terminal as the transfer destination, and the contents related to the transfer are conveyed by voice. Therefore, voice data for voice call is exchanged by radio data communication between the telephone control device and the radio telephone terminal.

  Usually, when performing a voice call, it is necessary to exchange a large volume of voice data in real time. For this reason, for example, a method of performing IP communication such as VoIP between the telephone control device and the wireless telephone terminal via a wireless line having a relatively large communication band such as a wireless LAN can be considered. Further, a method of connecting to a wireless LAN access point of a provider from a wireless telephone terminal and performing IP communication with the telephone control device via the Internet is also conceivable.

  However, such wireless data communication is best-effort communication in which the communication band and delay characteristics are not guaranteed, and since the transmission power is small, the available communication band is likely to fluctuate. For this reason, there has been a problem that a telephone service cannot be provided from the telephone control device to the radio telephone terminal with stable call quality.

  An object of the present invention is to provide a telephone control technology capable of providing telephone service with stable call quality from a telephone control device to a radio telephone terminal.

  In order to achieve such an object, the telephone control apparatus according to the present invention exchanges and connects a plurality of extension telephone terminals connected via an extension line to a telephone network or a mobile network, thereby the telephone network or A telephone control device that realizes a call by an extension telephone terminal via a mobile network, and is connected via a telephone network or a mobile network in response to a screen request notified by data communication via a mobile network from a wireless telephone terminal. A distribution unit that distributes a web screen for transferring the other party telephone terminal held by the telephone control device to one of the extension telephone terminals, and a web screen displayed on the wireless telephone terminal. A transfer notification confirmation unit that obtains transfer destination information from a transfer notification notified by data communication from the wireless telephone terminal based on the transfer operation, and a power at the wireless telephone terminal according to the transfer operation. A connection request confirmation unit for confirming a call path connection request from the wireless telephone terminal upon receipt of a terminal notified from the mobile network based on the outgoing call, acquisition of transfer destination information by the transfer notification confirmation unit, and a connection request confirmation unit After confirming the call path connection request, the extension telephone terminal corresponding to the transfer destination information is called by extension, and the extension call path formed by the extension call to the extension telephone terminal and the response to the incoming call from the radio telephone terminal A voice communication between the extension telephone terminal and the radio telephone terminal, and when the voice call ends, the other party communication path and the extension communication path with the other telephone terminal And a call control unit for relay connection.

  At this time, each wireless telephone terminal further includes a storage unit that stores wireless terminal information in which the terminal identification information and the mobile phone number of the wireless telephone terminal are registered, and the call control unit includes an extension speech path, a terminal speech path, When the transfer notification confirmation unit obtains the transfer destination information and the connection request confirmation unit confirms the call path connection request within a predetermined time, and based on the wireless terminal information. If it is confirmed that the terminal identification information included in the transfer notification and the caller telephone number notified from the mobile network when the terminal arrives are the same wireless telephone terminal, the extension communication path and the terminal communication path May be relay-connected.

  In addition, when the transfer notification confirmation unit obtains the transfer destination information, instead of the transfer notification, the transfer destination added to the call request message transmitted from the wireless telephone terminal to the mobile network when making a call from the wireless telephone terminal The information may be acquired from a response notification message notified from the mobile network when the terminal arrives.

  In addition, the call control unit forms a terminal communication path with the wireless telephone terminal in response to the terminal incoming call, and the transfer notification confirmation unit obtains the transfer destination information instead of the transfer notification. The transfer destination information may be acquired from the DTMF signal received from the wireless telephone terminal via the.

  When the connection request confirmation unit confirms the communication path connection request, it confirms the communication path connection request based on the terminal identification information of the wireless telephone terminal included in the transfer notification instead of the terminal incoming call, and the call control unit relays When making a connection, instead of the terminal call path formed by the response to the terminal incoming call, the terminal call path formed by calling the wireless telephone terminal specified by the terminal identification information through the mobile network is relayed with the other call path You may make it connect.

  The telephone system according to the present invention includes any one of the above-described telephone control devices and a plurality of extension telephone terminals connected to the telephone control device via extension lines.

  In addition, the transfer control method according to the present invention includes a plurality of extension telephone terminals connected via an extension line, exchange-connected to the telephone network or the portable network, thereby allowing the extension telephone terminal via the telephone network or the portable network. Is a call control method used in a telephone control device that realizes a telephone call, and is connected via a telephone network or a mobile network in response to a screen request notified by data communication via a mobile network from a wireless telephone terminal. A distribution step of distributing a Web screen for transferring a partner telephone terminal held by the telephone control device to one of the extension telephone terminals to the wireless telephone terminal, and a transfer operation on the Web screen displayed on the wireless telephone terminal A transfer notification confirmation step of acquiring transfer destination information from the transfer notification notified by data communication from the wireless telephone terminal based on the wireless telephone terminal, and a wireless telephone corresponding to the transfer operation A terminal request confirmation step for confirming a call path connection request from the wireless telephone terminal upon receipt of a terminal notified from the mobile network based on a telephone call at the end, acquisition of transfer destination information by the transfer notification confirmation step, and a terminal After confirming the call path connection request in the request confirmation step, the extension telephone terminal corresponding to the transfer destination information is called by extension, and the extension call path formed by the extension call to the extension telephone terminal and the incoming call from the radio telephone terminal To establish a voice call between the extension telephone terminal and the radio telephone terminal, and when the voice call is terminated, A call control step for relay-connecting the extension communication path.

  According to the present invention, there is provided a call transfer service for transferring a voice call with a partner telephone terminal held by the telephone control device to the extension telephone terminal through a voice call with the extension telephone terminal. In this case, of the voice communication paths between the wireless telephone terminal and the extension telephone terminal, the terminal communication path between the wireless telephone terminal and the telephone control device is formed by a communication path using a mobile network. Therefore, stable call quality can be obtained as compared with a case where a terminal call path is formed using IP communication which is a best effort type. For this reason, it is possible to provide a telephone service with stable call quality from the telephone system to the wireless telephone terminal.

It is a block diagram which shows the structure of the telephone system concerning 1st Embodiment. It is an example of a structure of the screen during a call. It is a structural example of a pending screen. It is a structural example of a transfer screen. It is an example of a structure of the screen during transfer. It is a structural example of radio | wireless terminal information. It is a sequence diagram which shows the telephone call transfer process operation | movement of the telephone control apparatus concerning 1st Embodiment. It is a sequence diagram which shows the call transfer processing operation (continuation) of the telephone control apparatus concerning 1st Embodiment. It is a sequence diagram which shows the telephone call transfer process operation | movement of the telephone control apparatus concerning 2nd Embodiment. It is a sequence diagram which shows the telephone call transfer process operation | movement of the telephone control apparatus concerning 3rd Embodiment.

Next, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
First, a telephone system according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the telephone system according to the first embodiment.

  The telephone system 1 includes a telephone system such as a button telephone system and a PBX system, and a plurality of extension telephone terminals 19 connected via the extension line L0 and these extension telephone terminals 19 are connected to the telephone line L1, the radio line L2, and the like. The telephone control device 10 realizes a call by the extension telephone terminal 19 via the telephone network 40 or the mobile network 50 by exchange connection to the telephone network 40 or the mobile network 50 via the external line. . The telephone system 1 has a function of providing a telephone service similar to that of the extension telephone terminal 19 to the radio telephone terminal 20 connected via the mobile network 50.

The radio telephone terminal 20 is a radio communication terminal capable of voice call and data communication via the mobile network 50, such as a smartphone, a mobile phone terminal, and a personal digital assistant (PDA).
The counterpart telephone terminal 30 is a telephone device that is connected to the telephone network 40 and / or the mobile network 50 and performs a voice call with the telephone control device 10.
The telephone network 40 is a communication network such as a public telephone network (PSTN), an ISDN network, and an IP telephone network that can perform voice calls and data communication by wired communication. The mobile network 50 is a communication network capable of voice communication and data communication by wireless communication, as typified by a third generation mobile communication system (3G: 3rd Generation).

  In the present embodiment, the telephone control apparatus 10 is connected via the telephone network 40 or the mobile network 50 in response to a screen request notified by data communication from the wireless telephone terminal 20 via the mobile network 50, and is controlled by the telephone. A web screen for transferring the other party telephone terminal 30 held by the apparatus 10 to any of the extension telephone terminals 19 is distributed to the radio telephone terminal 20, and a transfer operation on the web screen displayed on the radio telephone terminal 20 is performed. The transfer destination information is acquired from the transfer notification notified from the wireless telephone terminal 20 by the data communication based on the terminal, and the terminal incoming call notified from the mobile network based on the telephone call at the wireless telephone terminal 20 according to the transfer operation Thus, after confirming the call path connection request from the radio telephone terminal 20, obtaining the transfer destination information and confirming the call path connection request, the extension telephone corresponding to the transfer destination information The terminal 19 is called as an extension, and the extension communication path formed by the extension call to the extension telephone terminal 19 and the terminal communication path formed by the response to the incoming call from the radio telephone terminal 20 are connected by relay connection. A voice call between the terminal 19 and the radio telephone terminal 20 is realized, and the other party call path and the extension call path with the other party telephone terminal 30 are relay-connected in accordance with the end of the voice call.

[Telephone control device]
Next, the telephone control device 10 of the telephone system 1 according to the present embodiment will be described with reference to FIG.
The telephone control device 10 includes a main device of a button telephone system, a PBX, and a telephone control device such as an IP telephone server. A plurality of extension telephone terminals 19 connected via the extension line L0 are connected to the telephone network 40 and the mobile network 50. A function for realizing a call by the extension telephone terminal 19 via the telephone network 40 or the mobile network 50, a function for providing various telephone services to the extension telephone terminal 19, and a mobile network. 50 has a function of providing a telephone service similar to that of the extension telephone terminal 19 to the radio telephone terminal 20 connected via the telephone 50.

  The telephone control device 10 includes, as main functional units, 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 switch unit 13, and a distribution unit 14. A transfer notification confirmation unit 15, a connection request confirmation unit 16, a call control unit 17, and a storage unit 18 are provided.

  The network I / F unit 11 has a dedicated communication circuit and is used for various call control messages and voice calls with the telephone network 40 and the other party telephone terminal 30 via the telephone line L1 from the telephone network 40. Various call control messages and voice data for voice calls are exchanged between the mobile network 50 and the radio telephone terminal 20 via the radio line L2 from the mobile network 50 and the function of exchanging voice signals or voice data. A function of exchanging data, and a function of performing data communication with the radio telephone terminal 20 via the radio line L2 and the mobile network 50.

  The extension I / F unit 12 has a dedicated communication circuit and receives various control commands and voice data for voice calls with the extension telephone terminal 19 via an extension line L0 such as a LAN or an extension transmission line. Has a function to communicate.

  The switch unit 13 is composed of a dedicated switch circuit and has a function of exchanging and connecting voice data exchanged between the network I / F unit 11 and the extension I / F unit 12 in accordance with an instruction from the call control unit 17. Have.

  In response to a screen request notified by data communication such as HTTP via the mobile network 50 from the wireless telephone terminal 20, the distribution unit 14 reads out an HTML-format Web screen corresponding to the screen request from the storage unit 18 and distributes it. In response to a transfer screen request notified by data communication via the mobile network 50 from the wireless telephone terminal 20, and connected via the telephone network 40 or the mobile network 50 by data communication via the mobile network 50. The telephone control device 10 has a function of delivering a transfer screen composed of a Web screen for transferring the other party telephone terminal 30 held by the telephone control device 10 to any of the extension telephone terminals 19.

  FIG. 2 is a configuration example of a screen during a call. Here, a symbol for displaying that a voice call is in progress, a symbol for displaying other party information such as the name and number of the other party related to the voice call, and a disconnection for disconnecting and ending the voice call A button symbol, a hold button symbol for holding the voice call by the telephone control device 10, a call record button symbol for recording the contents of the voice call, and the like are arranged.

  FIG. 3 is a configuration example of a pending screen. Here, a symbol for displaying that the voice call is on hold, a symbol for displaying the other party information such as the name of the other party and the other party's telephone number, and terminating the voice call The disconnect button symbol, the transfer selection button symbol for transferring the voice call to one of the extension telephone terminals 19, and the voice response in response to the other party telephone terminal 30 held by the telephone control device 10 again. A re-response button symbol for resuming the call is arranged.

FIG. 4 is a configuration example of the transfer screen. Here, a dial button symbol for operation input of a transfer destination telephone number, a transfer button symbol for instructing transfer to the operation input destination, and the like are arranged.
FIG. 5 is a configuration example of the screen during transfer. Here, a symbol for displaying that the transfer is in progress, a symbol for displaying the other party information such as the name and number of the other party related to the voice call, a symbol of a stop button for canceling the transfer process, etc. Is arranged.

  The transfer notification confirmation unit 15 receives the transfer operation from the transfer notification notified by the data communication via the mobile network 50 from the wireless telephone terminal 20 based on the transfer operation on the Web screen displayed on the wireless telephone terminal 20. The function of acquiring transfer destination information for instructing the transfer destination in response to the As data communication used at this time, for example, an HTTP GET method or a POST method may be used.

  The connection request confirmation unit 16 receives a call from the mobile network 50 based on a call originated by the mobile phone 50 performed by the radio phone terminal 20 in response to a transfer operation on the Web screen displayed on the radio phone terminal 20. It has a function of confirming that there has been a call path connection request from the radio telephone terminal 20 by the terminal incoming call notified to the telephone control device 10.

  The call control unit 17 exchanges various call control messages with the telephone network 40 and the mobile network 50 via the network I / F unit 11 to make outgoing calls, incoming calls using the telephone line L1 and the wireless line L2, A function for performing a call control such as a voice call and various control commands are exchanged with the extension telephone terminal 19 via the extension I / F unit 12, thereby making a call, an incoming call, a voice call, etc. at the extension telephone terminal 19. By controlling the switch section 13 and the function for controlling the operation of the network, the voice communication path connected by the network I / F section 11 and the voice communication path connected by the extension I / F section 12 are exchanged and connected. It has the function to do.

  Further, the call control unit 17 obtains the transfer destination information by the transfer notification confirmation unit 15 and confirms the call path connection request by the connection request confirmation unit 16, and then sets the extension telephone terminal 19 corresponding to the transfer destination information to the extension I. A terminal call formed by a function for calling an extension from the / F unit 12 via the extension line L0, an extension line formed by an extension call to the extension telephone terminal 19, and a response to an incoming call from the radio telephone terminal 20 A function of relay connecting to a route, and when the relay connection is performed, the transfer destination information is acquired and the call path connection request is confirmed within a predetermined time, and the wireless terminal in the storage unit 18 Based on the information, when it is confirmed that the terminal identification information included in the transfer notification and the caller telephone number notified from the mobile network 50 when the terminal arrives are the same wireless telephone terminal 20, the relay And a function to perform the connection.

  The call control unit 17 also confirms the transfer notification by the transfer notification confirmation unit 15 in response to the disconnection (end call) of the voice call between the extension telephone terminal 19 and the radio telephone terminal 20 realized by the relay connection. Correspondingly, the other party communication path with the other party telephone terminal 30 held in the network I / F unit 11 corresponding to the ID and the extension communication path of the extension telephone terminal 19 having a voice call with the radio telephone terminal 20 are relay-connected. By doing so, it has a function of transferring a voice call with the counterpart telephone terminal 30 from the radio telephone terminal 20 to the extension telephone terminal 19.

The storage unit 18 includes a storage device such as a hard disk and a semiconductor memory, and has a function of storing various processing information used for processing operations in each functional unit and a program executed by the CPU. The main processing information is wireless terminal information. FIG. 6 is a configuration example of wireless terminal information. Here, for each wireless telephone terminal 20 that is permitted to connect to the telephone system 1 in advance, the terminal ID (terminal identification information) and the mobile phone number of the wireless telephone terminal 20 are registered. As the terminal ID, an individual identification number or extension telephone number previously assigned to the wireless telephone terminal 20, or a nickname or name set by the user may be used.
Among these functional units, the distribution unit 14, the transfer notification confirmation unit 15, the connection request confirmation unit 16, and the call control unit 17 are realized by the cooperation of the CPU and the program.

[Wireless phone terminal]
Next, the configuration of the radiotelephone terminal 20 according to the present embodiment will be described with reference to FIG.
The wireless telephone terminal 20 is a wireless communication terminal capable of voice call and data communication via the mobile network 50, such as a smartphone, a mobile phone terminal, and a personal digital assistant (PDA). It has a browser function for performing data communication in accordance with operations on the screen.

  The radio telephone terminal 20 includes, as main functional units, a radio interface unit (hereinafter referred to as a radio I / F unit) 21, a voice processing unit 22, a screen display unit 23, an operation input unit 24, a control unit 25, and a browser unit 26. And a storage unit 27 are provided.

  The wireless I / F unit 21 has a dedicated wireless communication circuit, and performs various call control messages and voice calls with the mobile network 50 and the telephone control device 10 via the wireless line L3 from the mobile network 50. For exchanging voice data, and a function for performing data communication with the telephone control device 10 via the wireless line L3 and the mobile network 50.

  The voice processing unit 22 has a function of outputting a voice signal obtained by decoding the voice data received by the wireless I / F unit 21 from a speaker (not shown), and a voice input from a microphone (not shown). In response to an instruction from the control unit 25 and a function of outputting voice data obtained by encoding the signal to the wireless I / F unit 21, various voice signals such as a ring tone and a DTMF signal are sent to a speaker or a voice communication path. It has a function to output.

The screen display unit 23 includes a screen display device such as an LCD, and has a function of displaying various data such as a Web screen distributed from the telephone control device 10 in accordance with an instruction from the control unit 25. .
The operation input unit 24 includes a touch panel and various operation keys arranged on the screen of the screen display unit 23, and has a function of detecting a user operation.

  The control unit 25 controls each functional unit by exchanging various call control messages with the mobile network 50 via the wireless I / F unit 21 to make outgoing calls, incoming calls, and voices using the wireless line L3. It has a function of performing call control for realizing a telephone call and the like.

  The browser unit 26 has a function of performing data communication such as HTTP from the wireless I / F unit 21 to the telephone control device 10 via the mobile network 50, and a Web screen distributed from the telephone control device 10 by this data communication. Is displayed on the screen display unit 23, and various information is transmitted to the telephone control device 10 by data communication in accordance with the operation on the Web screen detected by the operation input unit 24.

  In addition, when the operation input unit 24 detects a transfer operation on the transfer screen distributed as a Web screen from the telephone control device 10, the browser unit 26 performs the telephone control device 10 by HTTP data communication via the mobile network 50. A function of transmitting a transfer notification message including the transfer destination telephone number input on the transfer screen and the terminal ID of the own terminal read from the storage unit 27, and when the transfer operation is detected by the operation input unit 24 In order to form a terminal communication path with the telephone control device 10 via the mobile network 50, the control unit 25 has a function of requesting a telephone call to the telephone control device 10 using the mobile network 50. Yes. The terminal ID added to the transfer notification message may be set in advance on the incoming call notification screen distributed from the telephone control device 10.

  In addition, the browser unit 26 stores the hold target information including the call partner information notified on the busy screen and the storage unit 27 in response to the hold operation on the busy screen distributed as a Web screen from the telephone control device 10. A function for transmitting a hold notification message including the terminal ID of the own terminal read from the mobile phone 50 to the telephone control device 10 by HTTP data communication via the mobile network 50, and a pending screen distributed as a web screen from the telephone control device 10 In response to the above-described transfer selection operation, a transfer screen request message including hold target information consisting of call partner information notified on the call screen and the terminal ID of the own terminal read from the storage unit 27 is sent to the mobile network 50. A function for transmitting to the telephone control device 10 by HTTP data communication via the Internet, and on the screen during transfer delivered as a Web screen from the telephone control device 10 Depending on the cross operation, in order to cut the terminal communication path between the telephone controller 10 through the mobile network 50, and a function of requesting the disconnection of the terminal communication path to the control unit 25.

The storage unit 27 includes a storage device such as a semiconductor memory, and has a function of storing various processing information and programs used for processing operations in each functional unit. Main processing information includes a terminal ID (terminal identification information) registered in advance in addition to the mobile phone number of the terminal itself.
Among these functional units, the control unit 25 and the browser unit 26 are realized by the cooperation of the CPU and the program.

[Operation of First Embodiment]
Next, the operation of the telephone control device 10 according to the present embodiment will be described with reference to FIGS. FIG. 7 is a sequence diagram illustrating a call transfer processing operation of the telephone control device according to the first embodiment. FIG. 8 is a sequence diagram illustrating a call transfer processing operation (continued) of the telephone control device according to the first embodiment.
Here, the telephone transfer function of the telephone service provided by the telephone system 1 is used to make a voice call with the other party telephone terminal 30 held by the telephone control device 10, and the radio telephone terminal 20 extends to the extension telephone terminal 19. A case will be described as an example in which the call is transferred to the extension telephone terminal 19 through a voice call.

  First, the other party communication path with the other party telephone terminal 30 connected through the telephone network 40 and the terminal communication path with the radio telephone terminal 20 connected through the mobile network 50 are It is assumed that the telephone unit 30 and the radio telephone terminal 20 are connected via a relay by the switch unit 13 and are making a voice call via the telephone control device 10 (step 100). At the start of this voice call, a call-in-progress screen indicating the call state is read from the storage unit 18, and the wireless telephone terminal 20 is transmitted from the distribution unit 14 of the telephone control device 10 by HTTP data communication via the mobile network 50. The browser unit 26 of the wireless telephone terminal 20 displays the in-call screen on the screen display unit 23 (step 101).

  At this time, for this relay connection, for example, in response to a call request from the radio telephone terminal 20, the call control unit 17 of the telephone control device 10 makes a voice call from the telephone network 40 to the other telephone terminal 30, A terminal communication path may be relay-connected. Alternatively, in response to an incoming call from the other party telephone terminal 30 notified from the telephone network 40, the call control unit 17 of the telephone control device 10 transmits a voice from the mobile network 50 to the radio telephone terminal 20, and the other party communication path and the terminal call The road may be connected via a relay.

In such a voice call, when this voice call is put on hold by the telephone control device 10 and transferred to an arbitrary extension telephone terminal 19, first, the user first displays a call-in-progress screen displayed on the radio telephone terminal 20. Hold operation on the above.
When the operation input unit 24 of the radio telephone terminal 20 detects a hold operation on the call screen (step 110), the browser unit 26 performs HTTP data communication from the radio I / F unit 21 via the mobile network 50. A hold notification message including hold target information including the other party telephone number of the call partner information notified on the call screen and the terminal ID of the own terminal read from the storage unit 27 is transmitted to the telephone control device 10 (step 111). .

In response to the hold notification message from the wireless telephone terminal 20 received via the network I / F unit 11, the call control unit 17 of the telephone control device 10 becomes a request source based on the terminal ID included in this message. The wireless telephone terminal 20 is confirmed (step 112), and the other party telephone number to be suspended is confirmed based on the hold target information included in this message (step 113). At this time, the correspondence relationship between the terminal ID and the hold target information may be stored in the storage unit 18 for processing to be described later.
Subsequently, the call control unit 17 transmits a disconnect message for disconnecting the terminal communication path from the network I / F unit 11 to the mobile network 50 (step 114). As a result, a disconnect message is notified from the mobile network 50 to the wireless telephone terminal 20, and the terminal communication path is disconnected.

In parallel with this, the call control unit 17 controls the switch unit 13 to disconnect the other party communication path with the other party telephone terminal 30 confirmed as the hold target from the terminal communication path with the radio telephone terminal 20, and The other telephone terminal 30 is placed in a hold state by switching connection to the hold trunk provided in FIG. Thereby, the hold tone from the hold trunk is sent to the other party telephone terminal 30 via the telephone network 40 (step 115).
Thereafter, the distribution unit 14 reads the pending screen from the storage unit 18 (step 116), and distributes the screen to the wireless telephone terminal 20 by HTTP data communication via the mobile network 50 from the network I / F unit 11 (step 117). ).

The browser unit 26 of the radio telephone terminal 20 displays the pending screen from the telephone control device 10 received via the radio I / F unit 21 on the screen display unit 23 (step 118).
Here, when a transfer selection operation for selecting a transfer function on the pending screen is performed by the user (step 120), the browser unit 26 causes the mobile network 50 to respond to detection of the transfer selection operation by the operation input unit 24. A transfer screen request message including the hold target information notified on the on-hold screen and the terminal ID of the own terminal read from the storage unit 27 is transmitted to the telephone control device 10 by HTTP data communication via the terminal (step 121). .

The distribution unit 14 of the telephone control device 10 reads the transfer screen from the storage unit 18 in response to the transfer screen request message from the wireless telephone terminal 20 (step 122), and the network I / F unit 11 via the mobile network 50. Distribution to the radio telephone terminal 20 is made by HTTP data communication (step 123).
The browser unit 26 of the radio telephone terminal 20 displays the transfer screen from the telephone control device 10 received via the radio I / F unit 21 on the screen display unit 23 (step 124).

  Here, when a transfer operation is performed by inputting the extension telephone number indicating the extension telephone terminal 19 of the transfer destination on the transfer screen by the user (step 130), according to the detection of the transfer operation by the operation input unit 24, The browser unit 26 transfers to the telephone control device 10 by HTTP data communication via the mobile network 50 and includes the transfer destination information including the input transfer destination telephone number and the terminal ID of the own terminal read from the storage unit 27. A notification message is transmitted (step 131).

  The transfer notification confirmation unit 15 of the telephone control device 10 responds to the transfer notification message from the wireless telephone terminal 20 received via the network I / F unit 11 and based on the terminal ID included in this message, The telephone terminal 20 is confirmed (step 132), and the transfer destination is confirmed by obtaining the transfer destination information included in the message, that is, the extension telephone number (step 133).

  On the other hand, the browser unit 26 of the wireless telephone terminal 20 requests the control unit 25 to make a call to the telephone control device 10 in response to the detection of the transfer operation by the operation input unit 24 (step 134). At this time, when the transfer screen is generated by the distribution unit 14 of the telephone control device 10, a call is made in advance to the transfer button of the transfer notification screen shown in FIG. If the telephone number of the control device 10 is registered, a call request is automatically notified to the control unit 25 according to the operation of the transfer button.

In response to this, the control unit 25 sends from the wireless I / F unit 21 to the mobile network 50 the destination telephone number consisting of the telephone number of the telephone control device 10 and the source telephone number consisting of the mobile phone number of its own terminal. The outgoing call request message is transmitted (step 135).
In response to the call request message from the radio telephone terminal 20, the mobile network 50 transmits an incoming call notification message to the telephone control device 10 corresponding to the call destination telephone number specified in this message (step 136).

In response to the incoming call notification message from the mobile network 50, the connection request confirmation unit 16 of the telephone control device 10 acquires the caller telephone number specified in this message, thereby requesting a call path connection from the radio telephone terminal 20. (Step 137).
In this way, the call control unit 17 of the telephone control device 10 acquires the transfer destination information by the transfer notification confirmation unit 15 within a certain time, and connects the communication path from the radio telephone terminal 20 by the connection request confirmation unit 16. When the request is confirmed, based on the wireless terminal information in the storage unit 18, it is confirmed whether the terminal ID confirmed in step 132 and the caller telephone number confirmed in step 137 belong to the same wireless telephone terminal 20. .

Here, when it is confirmed that the terminal ID and the source telephone number belong to the same wireless telephone terminal 20, the call control unit 17 determines the wireless telephone terminal 20 identified by the terminal ID confirmed as the transfer source. By transmitting a response message to the terminal incoming call from the network I / F unit 11 to the mobile network 50, a terminal communication path with the radio telephone terminal 20 via the mobile network 50 is formed (step 140).
If it is not possible to confirm that the terminal ID and the source telephone number belong to the same wireless telephone terminal 20, it is determined that the terminal ID is from another wireless telephone terminal, and the terminal communication path is formed. The subsequent transfer processing operation is not performed.

  Thereafter, the call control unit 17 of the telephone control device 10 controls the switch unit 13 to send a ring tone indicating that the transfer destination is being called to the terminal communication path (step 141). Thereby, a ringing tone is output from the voice processing unit 22 of the radio telephone terminal 20 (step 142).

In addition, the distribution unit 14 of the telephone control device 10 reads the screen during transfer from the storage unit 18 (step 143), and distributes it to the radio telephone terminal 20 from the network I / F unit 11 by HTTP data communication via the mobile network 50. (Step 144).
The browser unit 26 of the radio telephone terminal 20 displays the screen during transfer from the telephone control device 10 received via the radio I / F unit 21 on the screen display unit 23 (step 145).

Subsequently, the call control unit 17 of the telephone control device 10 sends the extension telephone terminal 19 corresponding to the extension telephone number as the transfer destination confirmed in step 113 from the extension I / F unit 12 via the extension line L0. An extension call message is transmitted (step 150).
The extension telephone terminal 19 displays an extension incoming call in response to this extension call, and returns an extension response message in response to a response operation by the transfer destination user (step 151) (step 152). As a result, an extension communication path is formed with the extension telephone terminal 19.

  Thereafter, the call control unit 17 of the telephone control device 10 establishes the extension communication path formed with the extension telephone terminal 19 through the extension line L0 and the terminal communication path with the radio telephone terminal 20 in this way. Relay connection is established at the switch unit 13 (step 153). As a result, a voice call is started between the extension telephone terminal 19 and the radio telephone terminal 20 (step 154), and the user of the radio telephone terminal 20 sends the destination telephone terminal to the transfer destination user of the extension telephone terminal 19 The fact that the call with 30 is to be transferred is notified by voice call.

  Here, when a disconnection operation for terminating the voice call with the extension telephone terminal 19 is performed on the transferring screen by the user (step 160), the control unit 25 of the radio telephone terminal 20 displays the operation input unit. In response to the disconnection request from the browser unit 26 in response to the detection of the disconnection operation by the mobile phone 24, a disconnect message for disconnecting the terminal communication path with the wireless telephone terminal 20 using the mobile network 50 is transmitted to the mobile network 50. (Step 161).

In addition, the call control unit 17 of the telephone control device 10 controls the switch unit 13 in response to a disconnect message from the mobile network 50 indicating disconnection of the terminal communication path with the radio telephone terminal 20, so that the extension telephone terminal 19 The extension call path is separated from the terminal call path of the radio telephone terminal 20, and the other party call path with the other party telephone terminal 30 confirmed as the hold target in step 113 is separated from the hold trunk, and the extension call path and the other party call path are separated. The relay connection is made (step 162).
Thereby, the voice call between the extension telephone terminal 19 and the other party telephone terminal 30 is started via the telephone control device 10 (step 163).

[Effect of the first embodiment]
As described above, according to the present embodiment, in the telephone control device 10, the distribution unit 14 responds to the screen request notified by the data communication from the wireless telephone terminal 20 via the mobile network 50. 50, a web screen for transferring the other party telephone terminal 30 connected to the telephone 50 and held by the telephone control device 10 to any one of the extension telephone terminals 19 is distributed to the radio telephone terminal 20. The transfer destination information is acquired from the transfer notification notified from the radio telephone terminal 20 by data communication based on the transfer operation on the Web screen displayed on the radio telephone terminal 20.

  Further, the connection request confirmation unit 16 confirms the call path connection request from the wireless telephone terminal 20 based on the terminal incoming call notified from the mobile network 50 based on the telephone call at the wireless telephone terminal 20 according to the response operation. Then, after the call control unit 17 obtains the transfer destination information and confirms the call path connection request, the extension telephone terminal 19 corresponding to the transfer destination information is called by extension and the extension call to the extension telephone terminal 19 is made. The voice communication between the extension telephone terminal 19 and the radio telephone terminal 20 is realized by relay connection between the extension telephone path and the terminal communication path formed by the response to the incoming call from the radio telephone terminal 20. In accordance with the end of the call, the other party's call path with the other party telephone terminal 30 and the extension call path are relay-connected.

  Thereby, a call transfer service for transferring a voice call with the other party telephone terminal 30 connected via the telephone network 40 or the portable network 50 and held by the telephone control device 10 to any one of the extension telephone terminals 19. Of the voice communication path connecting the radio telephone terminal 20 and the extension telephone terminal 19, the terminal communication path between the radio telephone terminal 20 and the telephone control device 10 is a call using the mobile network 50. Formed in the road. Therefore, stable call quality can be obtained as compared with a case where a terminal call path is formed using IP communication which is a best effort type. For this reason, it is possible to provide a telephone service with stable call quality from the telephone system 1 to the radio telephone terminal 20.

  At this time, the telephone control device 10 requires transfer destination information such as the extension telephone number of the extension telephone terminal 19 when calling an extension telephone terminal 19 in response to a request from the radio telephone terminal 20. Therefore, before calling the extension telephone terminal 19 in the telephone control device 10, transfer destination information for identifying the extension telephone terminal 19 as a transfer destination is notified from the radio telephone terminal 20 to the telephone control device 10. It is necessary to keep.

  However, when a voice communication service of the mobile network 50 is used to make a telephone call from the radio telephone terminal 20 to the telephone control device 10 to form a terminal communication path, the destination telephone number sent from the radio telephone terminal 20 is only a telephone. This is the telephone number of the control device 10. For this reason, there is a problem that the transfer destination information related to the extension telephone terminal 19 that is the original extension call destination is not notified from the radio telephone terminal 20 to the telephone control device 10 when a telephone call is made to form a terminal communication path.

  On the other hand, in the present embodiment, focusing on the fact that the voice call service of the mobile network 50 and the data communication service can be used together, the voice call service of the mobile network 50 is changed according to the outgoing operation at the radio telephone terminal 20. Using the data communication service of the mobile network 50, the data is transferred from the wireless telephone terminal 20 to the telephone control apparatus 10 in parallel with the operation of making a telephone call for forming the terminal communication path to the telephone control apparatus 10. The transfer destination information for identifying the extension telephone terminal 19 is notified.

Thereby, according to the transmission operation at the radio telephone terminal 20, it is possible to collectively form the terminal communication path and notify the transfer destination information indicating the transfer destination.
Therefore, the terminal communication path between the radio telephone terminal 20 and the telephone control device 10 can be easily formed in the mobile network 50 without giving an operation burden to the user of the radio telephone terminal 20. For this reason, as a result, the usability is improved and the telephone service can be used smoothly.

  In the present embodiment, in response to a transfer screen request from the radio telephone terminal 20, the transfer screen is distributed by the distribution unit 14 of the telephone control device 10, and this transfer screen is displayed on the radio telephone terminal 20. Based on the transfer operation, transfer destination information is acquired from the transfer notification confirmation unit 15 from the transfer notification notified from the wireless telephone terminal 20 by data communication via the mobile network 50.

  Thereby, the radio telephone terminal 20 displays the Web screen distributed from the telephone control device 10 on the screen, and transmits arbitrary data to the telephone control device 10 in accordance with the operation on the Web screen by the user. A transfer notification can be sent to the telephone control device 10 via the mobile network 50 only by operating a typical browser function.

In a general telephone system, when a telephone service similar to that of an extension telephone terminal is provided from a telephone control device to a wireless telephone terminal, control messages are exchanged with the wireless telephone terminal.
However, the control message used when controlling the operation of the wireless telephone terminal is defined by the telephone system, for example, like the control data exchanged with the extension telephone terminal. This is because it is required to control the unique function of the telephone system.

  For example, when an external line is transmitted from a wireless telephone terminal using an external line of a telephone control device, a predetermined control message is transmitted to the telephone control device in response to a user operation at the wireless telephone terminal. At this time, the control message transmitted from the wireless telephone terminal to the telephone control device stores various data such as the request message for requesting an outside line transmission, the telephone number of the terminal itself, the telephone number of the destination. There is a need to. For this reason, it is necessary to generate and transmit a control message at the radio telephone terminal in accordance with the internal configuration of the control message used in the telephone control device.

  Therefore, the standard functions of wireless telephone terminals such as general mobile phone terminals that are commercially available cannot access the telephone control device based on the control message unique to the telephone system. The operation of the radiotelephone terminal cannot be controlled based on the control message from.

  In such a case, it is necessary to add a function for operating the wireless telephone terminal based on the control message unique to the telephone system to the wireless telephone terminal, specifically, a special program for connecting to the telephone system. Must be created and installed in advance on the wireless telephone terminal. In addition, since each mobile phone service provider has a different program language that can be executed on each mobile phone terminal, it is necessary to create a program for each language. For this reason, there is a problem that the telephone service of the telephone system cannot be easily used from a general commercially available wireless telephone terminal.

  According to the present invention, since the Web screen used for the operation when using the telephone service is distributed from the telephone control device 10 to the wireless telephone terminal 20, the general commercially available wireless telephone terminal 20 equipped with a browser function can be used. The telephone service of the telephone system 1 can be easily used. The browser function conforms to standards such as HTTP and HTML, and any browser function installed in the mobile phone terminal of each mobile phone service provider has a common function.

  As a result, it is not necessary to install a special application on the radio telephone terminal 20, and the installation work borne by the user of the radio telephone terminal 20 can be omitted. Further, the cost for developing a special application can be saved, and there is no need to create a program in a different language for each mobile phone service provider. Therefore, it is possible to greatly reduce the operation cost of the telephone service.

  Further, according to a response operation on the Web screen at the radio telephone terminal 20, a transfer notification can be notified to the telephone control device 10 by data communication such as HTTP via the mobile network 50. For this reason, it is possible to promptly notify the transfer notification without delaying the telephone call for forming the terminal communication path, as compared with the case where the transfer notification is notified by storage-type data communication such as e-mail. Therefore, the user of the radio telephone terminal 20 can use the telephone service very smoothly by a simple operation of operating the transfer button on the Web screen.

  In the present embodiment, in the telephone control device 10, for each wireless telephone terminal 20, the wireless terminal information in which the terminal identification information and the mobile phone number of the wireless telephone terminal 20 are registered is stored in the storage unit 18. When the call control unit 17 relay-connects the extension communication path of the extension telephone terminal 19 and the terminal communication path of the radio telephone terminal 20, the transfer notification confirmation unit 15 acquires transfer destination information and the connection request confirmation unit 16 The terminal identification information included in the transfer notification from the wireless telephone terminal 20 and the mobile phone information based on the wireless terminal information stored in the storage unit 18 when the communication path connection request is confirmed within a predetermined time. When it is confirmed that the caller telephone number notified at the time of an incoming call from the network 50 is that of the same radio telephone terminal 20, a relay connection is made to the extension telephone terminal 19.

  Thereby, the telephone control device 10 can accurately identify the transfer notification and the incoming call from the same radio telephone terminal 20. Therefore, even when a plurality of transfer notifications are received from a plurality of wireless telephone terminals 20 at the same time or when a plurality of terminal calls from the mobile network 50 are generated at the same time, based on the transfer destination information notified by the transfer notification. The specified extension communication path on the extension telephone terminal 19 side and the terminal communication path on the radio telephone terminal 20 side formed in response to the terminal incoming call can be accurately relay-connected.

[Second Embodiment]
Next, the telephone control device 10 of the telephone system 1 according to the second embodiment of the present invention will be described.
In the first embodiment, the case where the data communication service of the mobile network 50 is used when notifying the transfer control information of the extension telephone terminal 19 from the radio telephone terminal 20 to the telephone control apparatus 10 has been described as an example. In the present embodiment, instead of the data communication service of the mobile network 50, parameters (additional information) added to a call request message transmitted from the wireless telephone terminal 20 to the mobile network 50 when making a call on the wireless telephone terminal 20. ) Is used to notify the transfer destination information.

In the present embodiment, the transfer notification confirmation unit 15 of the telephone control device 10 obtains the transfer destination information, instead of the transfer notification from the radio telephone terminal 20, at the time of outgoing call from the radio telephone terminal 20, the radio telephone It has a function of acquiring transfer destination information added as a parameter such as a subaddress to a call request message transmitted from the terminal 20 to the mobile network 50 from a response notification message notified from the mobile network 50.
Other configurations in the telephone control device 10 are the same as those in the first embodiment, and a detailed description thereof is omitted here.

[Operation of Second Embodiment]
Next, with reference to FIG. 9, operation | movement of the telephone control apparatus 10 concerning this Embodiment is demonstrated. FIG. 9 is a sequence diagram showing a call transfer processing operation of the telephone control device according to the second embodiment, and the same or equivalent parts as those in FIG. 8 are given the same reference numerals.
Here, the telephone transfer function of the telephone service provided by the telephone system 1 is used to make a voice call with the other party telephone terminal 30 held by the telephone control device 10, and the radio telephone terminal 20 extends to the extension telephone terminal 19. A case will be described as an example in which the call is transferred to the extension telephone terminal 19 through a voice call. Note that the operation up to step 130 and the operation after step 140 are the same as those in FIG. 8, and a description thereof will be omitted here.

When a transfer operation is performed on the transfer screen by the user's operation (step 130), the browser unit 26 performs HTTP data communication via the mobile network 50 in response to detection of the transfer operation by the operation input unit 24. A response notification message including the terminal ID of the own terminal read from the storage unit 27 is transmitted to the telephone control device 10 (step 200).
The transfer notification confirmation unit 15 of the telephone control device 10 responds to the transfer notification message from the wireless telephone terminal 20 received via the network I / F unit 11 and based on the terminal ID included in this message, The telephone terminal 20 is confirmed (step 201).

  On the other hand, the browser unit 26 of the radio telephone terminal 20 requests the control unit 25 to make a call to the telephone control device 10 in response to the detection of the transfer operation by the operation input unit 24 (step 202). At this time, the browser unit 26 designates transfer destination information including an extension telephone number indicating the extension telephone terminal 19 of the transfer destination input on the transfer screen as a parameter to be added to the call request message.

In response to this, the control unit 25 sends from the wireless I / F unit 21 to the mobile network 50 a call destination telephone number consisting of the telephone number of the telephone control device 10 and a caller telephone number consisting of the mobile phone number of its own terminal. Then, a call request message including the transfer destination information designated by the browser unit 26 is transmitted (step 203).
In response to the call request message from the radio telephone terminal 20, the mobile network 50 transmits a response notification message to the telephone control device 10 corresponding to the call destination telephone number specified in this message (step 204).

In response to the response notification message from the mobile network 50, the connection request confirmation unit 16 of the telephone control device 10 acquires the caller telephone number specified in the message, thereby requesting a call path connection from the radio telephone terminal 20. Is confirmed (step 205).
Also, the transfer notification confirmation unit 15 confirms the transfer destination by acquiring the transfer destination information included in the message (step 206).

  In this way, the call control unit 17 of the telephone control device 10 acquires the transfer destination information by the transfer notification confirmation unit 15 within a certain time, and connects the communication path from the radio telephone terminal 20 by the connection request confirmation unit 16. When the request is confirmed, a response message to the other party's incoming call identified by the terminal ID confirmed as the transfer source is transmitted from the network I / F unit 11 to the telephone network 40, whereby the wireless telephone terminal 20 via the mobile network 50. (Step 140).

  At this time, the call control unit 17 compares the terminal ID confirmed in step 201 with the caller telephone number confirmed in step 205 based on the wireless terminal information in the storage unit 18, and the terminal ID and the caller telephone are compared. When it is confirmed that the numbers belong to the same radio telephone terminal 20, a response message is transmitted to form a terminal call path. If it is not possible to confirm that the terminal ID and the source telephone number belong to the same wireless telephone terminal 20, it is determined that the terminal ID is from another wireless telephone terminal, and the terminal communication path is formed. The subsequent transfer processing operation is not performed.

[Effect of the second embodiment]
As described above, according to the present embodiment, when the transfer notification confirmation unit 15 of the telephone control device 10 acquires the transfer destination information, the call origination at the radio telephone terminal 20 is used instead of the transfer notice from the radio telephone terminal 20. Since the transfer destination information added as a parameter to the call request message transmitted from the wireless telephone terminal 20 to the mobile network 50 is acquired from the incoming call notification message notified from the mobile network 50, data such as HTTP is sometimes obtained. Instead of communication, transfer destination information can be notified from the radio telephone terminal 20 to the telephone control device 10.

[Third Embodiment]
Next, the telephone control device 10 of the telephone system 1 according to the third embodiment of the present invention is described.
In the first embodiment, the case where the data communication service of the mobile network 50 is used when notifying the transfer destination information of the counterpart telephone terminal 30 from the radio telephone terminal 20 to the telephone control apparatus 10 has been described as an example. In the present embodiment, a case will be described in which transfer destination information is acquired from a DTMF signal transmitted from the radio telephone terminal 20 via a terminal communication path formed between the telephone control device 10 and the radio telephone terminal 20.

In the present embodiment, the call control unit 17 of the telephone control device 10 has a function of forming a terminal communication path with the radio telephone terminal 20 in response to a terminal call from the radio telephone terminal 20. .
In addition, the transfer notification confirmation unit 15 has a function of acquiring transfer destination information from a DTMF signal received from the radio telephone terminal 20 via the terminal communication path instead of the transfer notification when acquiring transfer destination information. Yes.
Other configurations in the telephone control device 10 are the same as those in the first embodiment, and a detailed description thereof is omitted here.

[Operation of Third Embodiment]
Next, with reference to FIG. 10, operation | movement of the telephone control apparatus 10 concerning this Embodiment is demonstrated. FIG. 10 is a sequence diagram showing the call transfer processing operation of the telephone control apparatus according to the third embodiment, and the same or equivalent parts as those in FIG. 8 are given the same reference numerals.
Here, the telephone transfer function of the telephone service provided by the telephone system 1 is used to make a voice call with the other party telephone terminal 30 held by the telephone control device 10, and the radio telephone terminal 20 extends to the extension telephone terminal 19. A case will be described as an example in which the call is transferred to the extension telephone terminal 19 through a voice call. The operation up to step 130 and the operation after step 141 are the same as those in FIG. 8, and the description thereof is omitted here.

When a response operation is performed on the transfer screen by the user's operation (step 130), the browser unit 26 performs HTTP data communication via the mobile network 50 in response to detection of the transfer operation by the operation input unit 24. A transfer notification message including the terminal ID of the own terminal read from the storage unit 27 is transmitted to the telephone control device 10 (step 300).
The transfer notification confirmation unit 15 of the telephone control device 10 responds to the transfer notification message from the wireless telephone terminal 20 received via the network I / F unit 11 and based on the terminal ID included in this message, The telephone terminal 20 is confirmed (step 301).

On the other hand, the browser unit 26 of the radio telephone terminal 20 requests the control unit 25 to make a call to the telephone control device 10 in response to the detection of the transfer operation by the operation input unit 24 (step 302).
In response to this, the control unit 25 sends from the wireless I / F unit 21 to the mobile network 50 the destination telephone number consisting of the telephone number of the telephone control device 10 and the source telephone number consisting of the mobile phone number of its own terminal. The outgoing call request message is transmitted (step 303).

In response to the call request message from the wireless telephone terminal 20, the mobile network 50 transmits a response notification message to the telephone control device 10 corresponding to the call destination telephone number specified in this message (step 304).
In response to the response notification message from the mobile network 50, the connection request confirmation unit 16 of the telephone control device 10 acquires the caller telephone number specified in this message, thereby requesting a call path connection from the radio telephone terminal 20. (Step 305).

Here, the call control unit 17 immediately transmits a response message to the response notification message to form a terminal communication path with the wireless telephone terminal 20 in response to the terminal incoming call (step 310). ).
In response to this, the control unit 25 of the radio telephone terminal 20 forms a terminal communication path via the mobile network 50 with the telephone control device 10, and the extension telephone terminal 19 of the transfer destination designated by the browser unit 26. Forwarding destination information consisting of an extension telephone number indicating “” is transmitted from the voice processing unit 22 by a DTMF signal (step 311).

  The transfer notification confirmation unit 15 of the telephone control device 10 acquires transfer destination information indicating the transfer destination from the DTMF signal transmitted from the radio telephone terminal 20 via the terminal communication path formed with the radio telephone terminal 20. This confirms the transfer destination (step 312).

  In this way, the call control unit 17 of the telephone control device 10 acquires the transfer destination information by the transfer notification confirmation unit 15 within a certain time, and connects the communication path from the radio telephone terminal 20 by the connection request confirmation unit 16. When the request is confirmed, the switch unit 13 is controlled to send a ringing sound indicating that the transfer destination is being called to the other party's communication path (step 141), and the subsequent voice transfer process is executed.

  At this time, the call control unit 17 is based on the wireless terminal information stored in the storage unit 18 and has the same terminal ID confirmed in step 301 and the same wireless telephone terminal 20 as the caller telephone number confirmed in step 304. If it is confirmed, a terminal communication path with the radio telephone terminal 20 is formed, and the subsequent voice transfer process is executed. If it cannot be confirmed that the terminal ID and the source telephone number belong to the same wireless telephone terminal 20, it is determined that the terminal ID is from another wireless telephone terminal and The terminal communication path is formed, and the subsequent voice transfer processing is not executed.

[Effect of the third embodiment]
As described above, in the present embodiment, when the call control unit 17 of the telephone control device 10 acquires the transfer destination information, the terminal between the wireless telephone terminal 20 and the wireless telephone terminal 20 responds to the incoming call from the wireless telephone terminal 20. Since the communication path is formed and the transfer notification confirmation unit 15 obtains the transfer destination information from the DTMF signal received from the wireless telephone terminal 20 via the terminal communication path instead of the transfer notification, data such as HTTP The transfer destination information can be notified from the radio telephone terminal 20 to the telephone control device 10 by the DTMF signal, instead of communication or the parameter of the call control message of the mobile network 50.

[Extended embodiment]
The present invention has been described above with reference to the embodiments, but 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 configuration and details of the present invention within the scope of the present invention. In addition, the embodiments can be implemented in combination within a consistent range.

  DESCRIPTION OF SYMBOLS 1 ... Telephone system, 10 ... Telephone control apparatus, 11 ... Network I / F part, 12 ... Extension I / F part, 13 ... Switch part, 14 ... Distribution part, 15 ... Transfer notification confirmation part, 16 ... Connection request confirmation part , 17 ... call control unit, 18 ... storage unit, 19 ... extension telephone terminal, 20 ... wireless telephone terminal, 21 ... wireless I / F unit, 22 ... voice processing unit, 23 ... screen display unit, 24 ... operation input unit, 25: control unit, 26: browser unit, 27 ... storage unit, 30 ... partner telephone terminal, 40 ... telephone network, 50 ... mobile network, L0 ... extension line, L1 ... telephone line, L2, L3 ... wireless line.

Claims (7)

A telephone control device that realizes a call by the extension telephone terminal via the telephone network or the mobile network by switching and connecting a plurality of extension telephone terminals connected via the extension line to the telephone network or the mobile network. And
In response to a screen request notified by data communication via the mobile network from a wireless telephone terminal, the extension telephone terminal connected via the telephone network or the mobile network and held by the telephone control device is the extension. A delivery unit for delivering a web screen for transfer to any of the telephone terminals to the wireless telephone terminal;
A transfer notification confirmation unit for acquiring transfer destination information from a transfer notification notified by the data communication from the wireless telephone terminal based on a transfer operation on the Web screen displayed on the wireless telephone terminal;
A connection request confirmation unit for confirming a call path connection request from the wireless telephone terminal by terminal arrival notified from the mobile network based on a telephone call at the wireless telephone terminal according to the transfer operation;
After obtaining the transfer destination information by the transfer notification confirmation unit and confirming the call path connection request by the connection request confirmation unit, call the extension telephone terminal corresponding to the transfer destination information to the extension telephone terminal A voice communication between the extension telephone terminal and the radio telephone terminal is realized by connecting the extension communication path formed by the extension call of the telephone and the terminal communication path formed by the response to the incoming call from the radio telephone terminal. And a call control unit that relay-connects the other party communication path with the other party telephone terminal and the extension communication path when the voice call ends. The telephone control device according to claim 1, wherein
Each wireless telephone terminal further includes a storage unit that stores wireless terminal information in which terminal identification information and a mobile phone number of the wireless telephone terminal are registered,
The call control unit obtains the transfer destination information by the transfer notification confirmation unit and confirms the call path connection request by the connection request confirmation unit when the extension communication path and the terminal communication path are relay-connected. Is performed within a certain period of time, and based on the wireless terminal information, terminal identification information included in the transfer notification and a source telephone number notified from the mobile network when the terminal is received are The telephone control device characterized in that, when it is confirmed that they belong to the same wireless telephone terminal, the extension communication path and the terminal communication path are relay-connected. The telephone control device according to claim 1 or 2,
When the transfer notification confirmation unit obtains the transfer destination information, in place of the transfer notification, the call notification message transmitted from the radio telephone terminal to the mobile network at the time of the telephone call at the radio telephone terminal The telephone control apparatus, wherein the added transfer destination information is acquired from a response notification message notified from the mobile network when the terminal is received. The telephone control device according to claim 1 or 2,
The call control unit forms a terminal communication path with the wireless telephone terminal in response to the terminal incoming call,
The transfer notification confirmation unit acquires the transfer destination information from the DTMF signal received from the wireless telephone terminal via the terminal communication path instead of the transfer notification when acquiring the transfer destination information. A telephone control device. The telephone control device according to claim 1 or 2,
The connection request confirmation unit, when confirming the call path connection request, confirms the call path connection request based on terminal identification information of the wireless telephone terminal included in the transfer notification instead of the terminal incoming call,
When performing the relay connection, the call control unit makes a call over the mobile network to the wireless telephone terminal specified by the terminal identification information, instead of a terminal communication path formed by a response to the terminal incoming call. A telephone control device characterized in that the terminal communication path formed in this way is relay-connected to the partner communication path.   6. A telephone system comprising: the telephone control apparatus according to claim 1; and a plurality of extension telephone terminals connected to the telephone control apparatus via an extension line. Used in a telephone control device that realizes a call by the extension telephone terminal via the telephone network or the mobile network by switching and connecting a plurality of extension telephone terminals connected via the extension line to the telephone network or the mobile network. An outgoing call control method,
In response to a screen request notified by data communication via the mobile network from a wireless telephone terminal, the extension telephone terminal connected via the telephone network or the mobile network and held by the telephone control device is the extension. A distribution step of distributing a web screen for transfer to any of the telephone terminals to the wireless telephone terminal;
A transfer notification confirmation step of obtaining transfer destination information from a transfer notification notified by the data communication from the wireless telephone terminal based on a transfer operation on the Web screen displayed on the wireless telephone terminal;
A terminal request confirmation step of confirming a call path connection request from the wireless telephone terminal by terminal arrival notified from the mobile network based on a telephone call at the wireless telephone terminal according to the transfer operation;
After obtaining the transfer destination information in the transfer notification confirmation step and confirming the call path connection request in the terminal request confirmation step, call the extension telephone terminal corresponding to the transfer destination information to the extension telephone terminal A voice communication between the extension telephone terminal and the radio telephone terminal is realized by connecting the extension communication path formed by the extension call of the telephone and the terminal communication path formed by the response to the incoming call from the radio telephone terminal. And a call control step of relay-connecting the other party communication path with the other party telephone terminal and the extension communication path in response to the end of the voice call.

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