JP2014187698A - Mobile terminal device, program, data relay server and telephone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a telephone system capable of providing a CTI service in which data such as a communication log and a telephone directory is viewed at a Web screen.SOLUTION: The telephone system includes: a browser for inputting from a Web server unit 1930 a call destination input screen to allow an input of a called telephone number to identify a called terminal, to display on a display screen; an information storage unit 2040 for storing a called telephone number 2041 input to the call destination input screen; and a terminal-side call control unit 2020 for displaying a communication start button to allow an input of a communication start instruction signal instructing to start communication, and for reading the called telephone number 2041 when the communication start instruction signal is input from the communication start button, to output a call request signal, requesting communication with the called terminal identified by the called telephone number 2041, to an SBC call control server unit 1910.

Description

  The present invention relates to an IP telephone system including an IP-PBX (Internet Protocol-Private, Branch, eXchange) (IP private branch exchange) and an IP (Internet Protocol) telephone, and in particular, CTI (Computer Telephony Integration). This relates to an IP telephone system that provides services.

  Examples of CTI (Computer, Telephony, Integration) services include a call recording service, a call log service, and a customer management service using a call log. In an IP telephone system of a large scale used in a normal company, a call control server of a non-SBC (Session / Border / Controller) type B2BUA (Back-to-Back / User / Agent) server system that does not handle voice packets Is used. In such a relatively large-scale IP telephone system, a call recording device connected to a LAN switch captures voice packets exchanged between a VoIP (Voice over Internet Internet Protocol) gateway and an IP telephone. You are recording a call.

  In addition, a product called a conventional CTI (Computer, Telephony, Integration) server is an API (Application Program) for a PBX (private branch exchange) or an IP-PBX (a private branch exchange that exchanges a line of an IP telephone terminal in an IP network). -An interface) function was used. That is, the CTI server provides a CTI service using the API function of PBX or IP-PBX.

  For example, an IP telephone system used in a small-scale base such as a call center uses an SBC type call control server type call control server capable of processing voice packets. Since the call control server of the SBC type call control server system can process voice packets, voice packets are exchanged between the IP phone and the call control server (in the case of a call between extension phones) or between the call control server and the VoIP gateway ( In the case of a call with an external telephone). Since the call control server of the SBC type B2BUA server system handles voice packets, there is a problem in that the call control server has a heavy CPU (Central Processing Unit) load and cannot accommodate many IP phones (extension phones). Although it is not generally used for construction of a large-scale IP telephone system, it is characterized in that it can provide a fine CTI service such as call recording and telephone conference.

  Some general connection type CTI servers have an IP-PBX function of an SBC call control server system and a Web server function. In addition, terminals such as smartphones having both the functions of an IP telephone SIP phone and a Web browser function are becoming widespread.

JP 2009-188658 A JP 2009-232186 A JP 2000-270307 A JP-T-2002-544715

  The method of capturing voice packets on the LAN switch may cause the voice packets to be dropped if the number of simultaneous calls increases, and an expensive computer having a high-performance CPU and a large memory is required. In addition, the provision of various CTI services that must process voice packets, such as telephone conferences, is difficult because IP-PBX does not directly handle voice packets.

  In addition, since a small IP telephone system can use an IP-PBX that handles voice packets, it can provide a CTI service to an external CTI server using an API function. However, in this method, since it depends on the API function of the PBX product, there is a problem that the CTI server becomes different for each manufacturer or product.

  Conventionally, an IP phone function (SIP (Session Initiation Protocol) phone function) that operates on a mobile terminal such as a smartphone holds data such as a call log and a telephone directory in the smartphone. For this reason, when a smartphone is lost, there is a problem that a security problem occurs that data such as a call log and a telephone directory is stored in the lost smartphone.

  Conventionally, the button control function of a button telephone which is a SIP phone has been realized using the SIP protocol. However, the SIP protocol for button control does not have a standard specification, and varies depending on the manufacturer of the button telephone. Therefore, there is a problem that only the combination of the same manufacturer can be selected for the key telephone and the IP-PBX for controlling the same.

  The present invention has been made to solve the above-described problems. An IP telephone system that provides a CTI service by constructing a CTI server using only a standard call control protocol without using an API function. suggest. In addition, the present invention provides an IP telephone system that can reliably acquire a call record with a computer with reduced cost without missing a voice packet even when the number of simultaneous calls increases.

  Further, the present invention provides a telephone system capable of providing a CTI service for browsing data such as a call log and a phone book on a Web screen without holding data such as a call log and a phone book on the mobile terminal side.

  In addition, by applying a general button control method, a telephone system that can realize button control independent of a manufacturer in a mobile terminal such as a smartphone is provided.

A telephone system according to the present invention includes an exchange connected to an external line network and a telephone terminal connected to the exchange, and the external line terminal connected to the external line network and the telephone terminal pass through the exchange and the external line network. In a telephone system for communication,
A data relay server that connects to the telephone terminal and the exchange, inputs transmission data to be transmitted from the telephone terminal to a destination terminal that is a destination external terminal, and outputs the input transmission data to the exchange; ,
The telephone terminal
A call request for requesting a call to the destination terminal is output to the exchange,
The exchange is
Switch-side call control for performing switch-side call control for inputting the call request output from the telephone terminal and establishing a call between the telephone terminal and the data relay server triggered by the input of the call request Part
The data relay server is
When the transmission data is output from the telephone terminal in a state where a call is established by the switch side call control of the switch side call control unit, the output transmission data is input, and the input transmission data is stored. A data storage unit stored in the device;
Triggered by the switch-side call control of the switch-side call control unit, a server-side call control unit that performs server-side call control that establishes a call between its own data relay server and the switch;
When a call is established by the server-side call control of the server-side call control unit, a data output unit that outputs the input transmission data to the exchange,
The switch further includes:
When the transmission data is output from the data output unit in a state where a call is established by the server side call control of the server side call control unit, the output transmission data is input, and the input transmission data is A gateway unit for transmitting to the destination terminal via the external network is provided.

The telephone terminal
Outputting the call request including the destination information for identifying the destination terminal to the exchange;
The switch side call controller is
The call request is input from the telephone terminal, the destination data including the destination information is generated based on the input call request, and the generated destination data is transmitted to the data when the switch side call control is performed. Output to the relay server,
The data storage unit
The destination data output at the time of the exchange side call control is input, and the input destination data and the transmission data output from the telephone terminal are associated with each other and stored in the storage device as call information data It is characterized by doing.

A telephone system according to the present invention includes an exchange connected to an external line network and a telephone terminal connected to the exchange, and the external line terminal connected to the external line network and the telephone terminal pass through the exchange and the external line network. In a telephone system for communication,
Connected to the telephone terminal and the exchange, and received from the exchange is received data that is received by the exchange from the external terminal via the external network and is addressed to an incoming terminal that is a destination telephone terminal. A data relay server for outputting the input received data to the receiving terminal;
The exchange is
A gateway unit that receives an incoming request for requesting an incoming call from the external terminal via the external network to the incoming terminal, and outputs the received incoming request to the data relay server;
The data relay server is
The incoming call request output from the gateway unit is input, and when the incoming call request is input, server side call control is performed to establish a call between the gateway unit and the local data relay server, and the incoming call request is input. A server-side call control unit that outputs an incoming call request for requesting establishment of a call between the own data relay server and the receiving terminal based on the exchange,
When the reception data is output from the gateway unit in a state where a call is established by the server side call control of the server side call control unit, the output reception data is input and the input reception data is stored A data storage unit for storing in the device,
The exchange is
An exchange that performs exchange-side call control that inputs the incoming call request output by the server-side call control unit and establishes a call between the data relay server and the receiving terminal when the incoming call request is input With a side call controller,
The data relay server further includes:
When a call is established by the exchange-side call control of the exchange-side call control unit, a data output unit is provided for outputting the input received data to the receiving terminal.

The gateway unit is
Receiving the incoming request including incoming information for identifying the incoming terminal from the external terminal via the external network, and outputting the received incoming request to the data relay server;
The server-side call control unit
The incoming call request is input from the gateway unit, and incoming data including the incoming call information is generated based on the input incoming call request.
The data storage unit
The incoming data generated by the server-side call control unit and the input received data are associated with each other and stored as call information data in the storage device.

The data relay server further includes:
The data storage unit includes a service providing unit that provides a call information data use service indicating a service using the call information data stored in the storage device by the processing device.

A telephone communication method for a telephone system according to the present invention includes a switch connected to an external network and a telephone terminal connected to the switch, and the external terminal connected to the external network and the telephone terminal are connected to the switch and the external network. In the telephone communication method of the telephone system that communicates via
A call request for requesting a call to a call destination terminal that is an external terminal of a call destination is input from the telephone terminal, and triggered by the input of the call request, the telephone terminal, the exchange, and the telephone terminal An exchange-side call control step for performing an exchange-side call control for establishing a call with a data relay server to be connected;
When the transmission data is output from the telephone terminal in a state where a call is established by the switch-side call control in the switch-side call control step, the output transmission data is input and the input transmission data is stored. A data storage step for storing in the device;
Triggered by the switch side call control of the switch side call control step, a server side call control step for performing server side call control for establishing a call between the data relay server and the switch;
When a call is established by the server-side call control of the server-side call control step, a data output step of outputting the input transmission data to the exchange;
When the transmission data is output by the data output step in a state where a call is established by the server side call control step, the output transmission data is input, and the input transmission data is input to the destination terminal. And a gateway step for transmitting via an external network.

A telephone communication method for a telephone system according to the present invention includes a switch connected to an external network and a telephone terminal connected to the switch, and the external terminal connected to the external network and the telephone terminal are connected to the switch and the external network. In the telephone communication method of the telephone system that communicates via
A gateway unit included in the exchange receives an incoming request for requesting an incoming call from the external terminal via the external network to an incoming terminal that is a destination telephone terminal, and the received incoming request is received as the telephone terminal. A terminating gateway step for outputting to a data relay server connected to the exchange;
The incoming call request output by the incoming call gateway step is input, and when the incoming call request is input, server-side call control is performed to establish a call between the gateway unit of the exchange and the data relay server. A server-side call control step for outputting an incoming call request for establishing a call between the data relay server and the receiving terminal based on the input incoming request;
When the reception data is output from the gateway unit in a state where a call is established by the server side call control in the server side call control step, the output reception data is input and the input reception data is stored. A data storage step for storing in the device;
An exchange that performs exchange-side call control that inputs the incoming call request output in the server-side call control step and establishes a call between the data relay server and the receiving terminal upon receiving the incoming call request. A side call control step;
And a data output step of outputting the received data received to the receiving terminal when a call is established by the switch side call control in the switch side call control step.

A data relay server according to the present invention includes an exchange connected to an external line network and a telephone terminal connected to the exchange, and the external line terminal connected to the external line network and the telephone terminal pass through the exchange and the external line network. Used in a telephone system for performing communication, connected to the telephone terminal and the exchange, and input transmission data to be transmitted from the telephone terminal to a destination terminal which is a destination external terminal, and the input transmission A data relay server for outputting data to the exchange,
The telephone terminal outputs a call request for requesting a call to the destination terminal to the switch, so that the switch inputs the call request output from the telephone terminal, and the call request When the switch side call control for establishing a call between the telephone terminal and the data relay server is performed with the input of the switch as a trigger, the call is transmitted from the telephone terminal in a state where the call is established by the switch side call control. When the data is output, the data storage unit that inputs the output transmission data and stores the input transmission data in a storage device;
Triggered by the switch side call control, a server side call control unit for performing server side call control for establishing a call between the local data relay server and the switch,
When a call is established by the server-side call control of the server-side call control unit, a data output unit that outputs the input transmission data to the exchange is provided.

The program according to the present invention comprises an exchange connected to an external network and a telephone terminal connected to the exchange, and the external terminal connected to the external network and the telephone terminal communicate with each other via the exchange and the external network. The telephone terminal and the exchange, and the transmission data to be transmitted from the telephone terminal to a destination terminal which is an external terminal of the destination is input. A program to be executed by a data relay server that is a computer that outputs to the exchange,
The telephone terminal outputs a call request for requesting a call to the destination terminal to the switch, so that the switch inputs the call request output from the telephone terminal, and the call request When the switch side call control for establishing a call between the telephone terminal and the data relay server is performed with the input of the switch as a trigger, the call is transmitted from the telephone terminal in a state where the call is established by the switch side call control. When the data is output, the data transmission process for inputting the output transmission data and storing the input transmission data in a storage device;
Triggered by the switch side call control, server side call control processing for performing server side call control for establishing a call between the local data relay server and the switch,
When a call is established by the server side call control, the data relay server is caused to execute data output processing for outputting the input transmission data to the exchange.

The mobile terminal device according to the present invention is
A data relay server connected to an external line terminal, which performs a call with the external line terminal via a data relay server including a call control server unit that executes call control and a web server unit that executes a web server function In a mobile terminal device having a display screen,
From the web server unit provided in the data relay server, a destination input screen for inputting a destination telephone number for specifying a destination terminal that is an external terminal of a destination is input, and the input destination input screen is input A browser to be displayed on the display screen;
An information storage unit for storing a destination telephone number input to the destination input screen displayed on the display screen by the browser;
When a call start button for inputting a call start instruction signal for instructing start of a call is displayed on the display screen, and the call start instruction signal is input from the call start button displayed on the display screen, the information The destination telephone number stored in the storage unit is read by a processing device, and a call request signal for requesting a call with the destination terminal specified by the read destination telephone number is sent to the data relay server. And a terminal-side call control unit that outputs to the call control server unit.

The browser
From the web server unit provided in the data relay server, a screen on which a phone book is displayed is input as the destination input screen, the input destination input screen is displayed on the display screen, and the displayed phone book The destination telephone number is input by selecting the telephone number of the destination from the above.

The browser
From the web server unit provided in the data relay server, a screen on which a call history is displayed is input as the destination input screen, the input destination input screen is displayed on the display screen, and the displayed call history The destination telephone number is input by selecting the telephone number of the destination from the above.

The browser
Using the HTTP (HyperText / Transfer / Protocol) protocol, the destination input screen is input from the web server unit, the input destination input screen is displayed on the display screen,
The terminal-side call control unit
The call request signal compliant with a SIP (Session Initiation Protocol) protocol is output to the call control server unit.

The program according to the present invention is:
A data relay server connected to an external line terminal, which performs a call with the external line terminal via a data relay server including a call control server unit that executes call control and a web server unit that executes a web server function In a program to be executed by a portable terminal device that is a computer that performs
The browser inputs the destination input screen by inputting a destination input screen for inputting a destination telephone number for specifying a destination terminal which is a destination external line terminal from the web server unit provided in the data relay server, Browser display processing for displaying a screen on a display screen included in the mobile terminal device;
A telephone number storage process in which an information storage unit stores a destination telephone number input to the destination input screen displayed on the display screen by the browser display process;
The terminal-side call control unit displays a call start button for inputting a call start instruction signal for instructing the start of a call on the display screen, and the call start instruction signal is input from the call start button displayed on the display screen A call request requesting a call with the callee terminal identified by the read callee telephone number, when the callee phone number stored by the phone number storage process is read out by a processing device. The portable terminal device, which is the computer, executes a terminal-side call control process for outputting a signal to the call control server unit of the data relay server.

A data relay server according to the present invention includes:
In a data relay server connected to an external terminal, a mobile terminal device having a browser and a display screen, and relaying a call between the external terminal and the mobile terminal device,
A database that stores information about calls;
When a call between the portable terminal device and the external terminal is started, a dial plan control unit that stores information about the started call in the database;
A search result screen for executing a web server function, searching for information related to a call stored in the database based on a request from the browser of the mobile terminal device, and displaying the search result A web server unit that transmits to the mobile terminal device and causes the browser to display the transmitted search result screen on the display screen of the mobile terminal device.

The dial plan control unit
When a call between the mobile terminal device and the external terminal is started, a log of the started call is stored in the database as information related to the call,
The web server unit
Based on a request from the browser of the mobile terminal device, a call log stored in the database is searched, a search result screen displaying the search result is transmitted to the mobile terminal device, and the transmitted search result A screen is displayed on the display screen of the mobile terminal device by the browser.

The database stores a phone book,
The dial plan control unit
When a call between the mobile terminal device and the external line terminal is started, based on a call destination telephone number of the started call, the phone book stored in the database is updated,
The web server unit
The telephone book stored in the database is displayed on the display screen of the mobile terminal device based on a request from the browser of the mobile terminal device.

The data relay server further includes:
Using a SIP (Session Initiation Protocol) protocol, a call control server unit that executes call control for starting a call between the mobile terminal device and the external terminal,
The web server unit
The search result screen is displayed on the display screen of the mobile terminal device based on a request from the browser of the mobile terminal device by using an HTTP (HyperText / Transfer / Protocol) protocol.

The program according to the present invention is:
In a program comprising a database, connected to a mobile terminal device having a browser and a display screen, and an external line terminal, and executed by a data relay server, which is a computer that relays a call between the external line terminal and the mobile terminal device,
When the dial plan control unit starts a call between the mobile terminal device and the external terminal, a call information storage process for storing information about the started call in the database;
A web server unit that executes a web server function retrieves information related to a call stored in the database by the call information storage process based on a request from the browser of the mobile terminal device, and displays the retrieved result Transmitting a search result screen to the mobile terminal device, and causing the data relay server, which is the computer, to execute web server processing for displaying the transmitted search result screen on the display screen of the mobile terminal device by the browser. Features.

The telephone system according to the present invention includes:
A data relay server connected to an external terminal, and a mobile terminal device connected to the data relay server and having a display screen, wherein the external terminal and the mobile terminal device are the data relay server In a telephone system that performs a call via
The data relay server is
A call control server for executing call control;
A web server unit that executes a web server function,
The portable terminal device
A browser for inputting a destination input screen for inputting a destination telephone number for specifying a destination terminal which is an external terminal of the destination from the web server unit, and displaying the input destination input screen on the display screen; ,
An information storage unit for storing a destination telephone number input to the destination input screen displayed on the display screen by the browser;
When a call start instruction button for inputting a call start instruction signal for instructing the start of a call is displayed on the display screen, and the call start instruction signal is input by the call start instruction button displayed on the display screen, The call control server receives a call request signal for requesting a call with the call destination terminal specified by the read call destination telephone number, by reading out the call destination telephone number stored in the information storage unit by a processing device. A terminal-side call control unit that outputs to the unit,
The call control server unit
The call request signal output by the terminal-side call control unit is input, call control with the mobile terminal device is executed based on the input call request signal, and a call with the external terminal Execute control,
The data relay server further includes:
A database that stores information about calls;
When a call is established between the mobile terminal device and the external line terminal and a call between the mobile terminal device and the external line terminal is started, a dial plan for storing information on the started call in the database A control unit,
The web server unit
Based on a request from the browser, information related to a call stored in the database is searched, a search result screen displaying the search result is transmitted to the mobile terminal device, and the transmitted search result screen is displayed by the browser. It is displayed on the display screen of the portable terminal device.

  In a telephone system in which an external terminal connected to an external network and a telephone terminal communicate with each other via the exchange and the external network, a data relay server connected to the telephone terminal and the exchange is provided, and the exchange side provided in the exchange An exchange in which a call control unit inputs a call request addressed to a destination terminal output from the telephone terminal, and establishes a call between the telephone terminal and the data relay server triggered by the input of the call request Side call control, and the data storage unit of the data relay server inputs the transmission data from the telephone terminal in a state where the call is established by the switch side call control and stores it in the storage device, The server-side call control unit performs server-side call control for establishing a call between its own data relay server and the switch, triggered by the switch-side call control. When the call is established by the server side call control, the data output unit outputs the input transmission data to the exchange, and the gateway unit of the exchange has the call established by the server side call control. Since the transmission data output from the data output unit is input and transmitted to the destination terminal, the data can be stored in the data relay server, and the call record can be reliably acquired without missing the data. .

It is a figure which shows the structure of the IP telephone system (normal scale) 601 of the scale used by a company. 1 is a diagram showing a configuration of a small IP telephone system (small scale) 602. FIG. FIG. 6 is a sequence diagram showing a call control method and a voice communication method in an IP telephone system (normal scale) 601. 1 is a diagram showing a system configuration of an IP telephone system 600 according to Embodiment 1. FIG. 3 is a diagram illustrating an example of hardware resources of a non-SBC type call control server 130 and a CTI server 150 according to Embodiment 1. FIG. 3 is a functional block diagram of IP telephone system 600 according to Embodiment 1. FIG. 6 is a flowchart showing a processing flow of IP telephone system 600 (during a call) according to Embodiment 1. FIG. It is a flowchart figure which shows the other example of the flow of a process of the IP telephone system 600 (at the time of a call) which concerns on Embodiment 1. FIG. FIG. 6 is a flowchart showing a processing flow of IP telephone system 600 (during an incoming call) according to the first embodiment. It is a flowchart figure which shows the other example of the flow of a process of the IP telephone system 600 (at the time of an incoming call) which concerns on Embodiment 1. FIG. FIG. 6 is a sequence diagram showing a processing flow of an IP telephone communication method at the time of outgoing call of IP telephone system 600 in the first embodiment. FIG. 11 is a sequence diagram showing a process flow of an IP telephone communication method when an incoming call is received by IP telephone system 600 in the first embodiment. 6 is a diagram illustrating a CTI server disconnection function when a failure occurs in the CTI server 150 according to Embodiment 1. FIG. 6 is a diagram showing a system configuration of an IP telephone system (large-scale) 604 according to Embodiment 2. FIG. FIG. 20 is a diagram illustrating an example of a specific software configuration (functional block configuration) of a CTI server A 190 according to Embodiment 3. It is a figure which shows the whole structure of the telephone system 6000 which concerns on Embodiment 4. FIG. It is a figure which shows the functional block of the portable terminal device 2000 which concerns on Embodiment 4, and CTI server A190. FIG. 20 is a diagram illustrating an example of hardware resources of the mobile terminal device 2000 in the fourth embodiment. FIG. 20 is a flowchart showing a flow of telephone communication processing of the telephone system 6000 according to the fourth embodiment. FIG. 20 is a flowchart showing a telephone communication process flow (continuation process of FIG. 19) of the telephone system 6000 according to the fourth embodiment. 10 is a diagram showing a display screen 2010 of a mobile terminal device 2000 according to Embodiment 4. FIG. It is a figure which shows the display screen 2010 of the portable terminal device 2000 which concerns on Embodiment 4, (a) is the destination input screen which displayed the telephone directory, (b) is the figure which shows the destination input screen which displayed the incoming call history. It is. FIG. 10 is a diagram showing a display screen 2010 of the mobile terminal device 2000 when an incoming call is received according to Embodiment 4.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a configuration of an IP telephone system (normal scale) 601 of a scale used in a company. FIG. 2 is a diagram showing the configuration of a small IP telephone system (small scale) 602. With reference to FIG. 1 and FIG. 2, the technology that is the basis of the IP telephone system according to the present embodiment will be described. The IP-PBX 110a used in the general IP telephone system (ordinary scale) 601 shown in FIG. 1 has a configuration in pursuit of the scale used in ordinary companies. The IP-PBX 110b used in the small-scale IP telephone system (small-scale) 602 shown in FIG. 2 is configured to be used in a small-scale base such as a call center although it can perform a call recording function.

  As shown in FIG. 1, an IP telephone system (normal scale) 601 includes an IP-PBX 110a, an IP telephone 120, a LAN switch 401, and a call recording device 402. The IP-PBX 110 a includes a non-SBC type call control server 130 and a VoIP gateway 140. The IP-PBX 110a is a device that performs circuit switching of the IP telephone 120 in the IP network.

  The VoIP gateway 140 is a device placed at the boundary between the external line network 300 to which an external line terminal 320 (external line telephone or the like) is connected and the internal side (IP network) of the IP telephone system. The external network 300 is an external connection network that is connected to the opposite side of the VoIP gateway 140 from the non-SBC call control server 130 side. The external line network 300 is, for example, a public line or a Hikari telephone network. Alternatively, a predetermined internal network may be connected to the VoIP gateway 140 as an external network 300 (external connection network) of the IP telephone system.

  The VoIP gateway 140 is a device that performs interface conversion of data between the external network 300 and the IP telephone system (normal scale) 601 (IP network).

  The non-SBC type call control server 130 is a call control that employs a non-SBC (Session-Border-Controller) -type B2BUA (Back-to-Back-User-Agent) server method that does not handle voice. It is a server. The non-SBC type B2BUA call control server type non-SBC type call control server 130 performs call control but does not handle voice packets.

  FIG. 3 is a sequence diagram showing a call control method and a voice communication method in the IP telephone system (normal scale) 601. As shown in FIG. 3, the non-SBC type call control server 130 performs call control between the IP telephone 120 and the VoIP gateway 140. Voice packets are exchanged between the IP telephone 120 and the VoIP gateway 140 without going through the non-SBC call control server 130.

  Since the non-SBC type call control server 130 controls only call control and does not process voice packets, voice packets are exchanged between the IP telephones 120 (in the case of extension telephones) or between the IP telephone 120 and the VoIP gateway 140. (For calls with external lines). That is, the non-SBC type call control server 130 performs call control between the IP telephone 120 and the other party external line terminal, but voice packets (voice data) are exchanged between the IP telephone 120 and the VoIP gateway 140.

  The non-SBC type call control server 130 of the non-SBC type B2BUA call control server system does not handle voice, so the non-SBC type call control server 130 has a light CPU load and can accommodate many IP telephones 120 (extension telephones). There is an advantage. Therefore, a large-scale IP telephone system (for example, IP telephone system (normal scale) 601) can be constructed. However, in the call recording service or the like in the IP telephone system (normal scale) 601, the call recording device 402 connected to the LAN switch 401 captures voice packets exchanged between the IP telephone 120 and the VoIP gateway 140. Is realized. As described above, the method of capturing voice packets on the LAN may cause the voice packets to be missed when the number of simultaneous calls increases, and requires an expensive computer having a high-performance CPU and a large memory. Also, provision of various CTI services that must process voice packets such as a conference call is difficult to realize because the IP-PBX 110a (non-SBC call control server 130) does not directly handle voice packets.

  As shown in FIG. 2, the IP telephone system (small scale) 602 includes an IP-PBX 110b, an IP telephone 120, an API-compatible CTI server 403, and a call recording storage unit 404. The IP-PBX 110b includes an SBC call control server 131 and a VoIP gateway 140. The same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.

  An IP telephone system (small scale) 602 is a small scale IP telephone system used in a call center or the like. The SBC call control server 131, which is a component of the IP-PBX 110b for the call center, is a server that employs a voice handling method called the SBC B2BUA server method. Since the SBC type call control server 131 of the SBC type call control server system can process voice packets, voice packets are exchanged between the IP telephone 120 and the SBC type call control server 131 (in the case of an extension telephone), or SBC. This is performed between the type call control server 131 and the VoIP gateway 140 (in the case of a call with an external telephone).

  Since the SBC call control server 131 handles voice packets, the SBC call control server 131 itself has a heavy CPU load and cannot accommodate many IP telephones 120 (extension telephones). Therefore, the SBC type call control server 131 is not generally used for constructing a large-scale IP telephone system. However, since the SBC call control server 131 performs call control and handles voice packets, the API function of the SBC call control server 131 is used to provide detailed CTI services such as call recording and conference calls. be able to. However, since such a method depends on the API function as a product of the SBC type call control server 131, the CTI service differs depending on the manufacturer or product.

  Further, the SBC type call control server 131 can be connected to an external API-compatible CTI server 403 using an API function. The API-compatible CTI server 403 connected to the SBC call control server 131 can provide a CTI service by recording voice packets in the call recording storage unit 404 or the like. However, in such a system, only the API-compatible CTI server 403 corresponding to the API function as the product of the SBC type call control server 131 can be connected, so that the API-compatible CTI server 403 differs for each manufacturer or product.

  FIG. 4 is a diagram showing a system configuration of IP telephone system 600 according to the present embodiment. The system configuration of IP telephone system 600 according to the present embodiment will be described using FIG.

  The IP telephone system 600 includes an IP-PBX 110, an IP telephone 120, a CTI server 150, and a call recording data unit 160. IP telephone system 600 according to the present embodiment includes IP-PBX 110 connected to external line network 300 and IP telephone 120 connected to IP-PBX 110, and external line terminal 320 and IP telephone 120 connected to external line network 300 are IP An IP telephone system that transmits and receives voice data (voice communication) via the PBX 110 and the external network 300. IP telephone system 600 is an example of a telephone system.

  The IP telephone 120 outputs a call request including a call destination information for specifying a call destination terminal to the IP-PBX 110, which is a call request requesting a call to the call destination external line terminal 320 (call destination terminal). . The destination information is, for example, a telephone number of the destination terminal. IP telephone 120 outputs transmission voice data when a call with a destination terminal is established. The transmission voice data is an example of transmission data.

  The IP telephone 120 is voice data received by the IP-PBX 110 from the source external terminal 320 via the external network 300 when a call with the source external line terminal 320 is established. The received voice data addressed to the IP telephone 120 (incoming terminal) is input. Received audio data is an example of received data. The IP telephone 120 is an example of a telephone terminal.

  In this embodiment, a method in which voice data is exchanged between IP telephone 120 and external line terminal 320 of IP telephone system 600 is described. However, data transmitted and received (transmission data and reception data) is not limited to voice data. For example, the present embodiment can be applied even when video data, a media stream, or the like is transmitted / received as data to be transmitted / received (transmission data, reception data).

  The IP-PBX 110 includes a VoIP gateway 140 and a non-SBC call control server 130.

  As described above, the VoIP gateway 140 is a device placed at the boundary between the external line network 300 to which the external line terminal 320 is connected and the internal side (IP network) of the IP telephone system 600. The external network 300 is an external connection network that is connected to the opposite side of the VoIP gateway 140 from the non-SBC call control server 130 side. The external line network 300 is, for example, a public line or a Hikari telephone network. Alternatively, a predetermined internal network may be connected to the VoIP gateway 140 as an external network 300 (external connection network) of the IP telephone system.

  The VoIP gateway 140 is a device that performs interface conversion of data between the external network 300 and the IP telephone system 600 (IP network). The VoIP gateway 140 is an example of a gateway unit.

  The non-SBC type call control server 130 is a call control server adopting a method that does not handle voice, which is called a non-SBC type B2BUA server method. The non-SBC type B2BUA call control server type non-SBC type call control server 130 performs call control but does not handle voice packets.

  The non-SBC type call control server 130 receives a call request output from the IP telephone 120, and an exchange that establishes a call between the IP telephone 120 and a CTI server 150 (to be described later) when the call request is input. Perform side call control. Further, the non-SBC type call control server 130 inputs the incoming call request (the incoming call request based on the incoming call request from the external terminal 320 to the destination IP telephone 120) output from the CTI server 150, and receives the incoming call request. The switch side call control for establishing a call between the CTI server 150 and the IP telephone 120 as the receiving terminal is performed with the input as a trigger. The non-SBC type call control server 130 is an example of an exchange side call control unit.

  The CTI server 150 is installed (connected) so as to interrupt between the non-SBC call control server 130 provided in the IP-PBX 110 and the VoIP gateway 140. The CTI server 150 has a built-in SBC call control server function. As described above, the SBC call control server function is a function of the call control server that also performs call control and handles voice packets. Therefore, the CTI server 150 can communicate with the non-SBC call control server 130 and the VoIP gateway 140 included in the IP-PBX 110 using a standard call control protocol. The standard call control protocol is, for example, a SIP (Session Initiation Protocol) protocol.

  In addition, the CTI server 150 can communicate with the IP telephone 120 and the VoIP gateway 140 using a standard RTP (Realtime Transfer Protocol) protocol for voice packets.

  As shown in FIG. 4, the CTI server 150 is connected to the IP telephone 120 and the IP-PBX 110 (VoIP gateway 140 included in the IP-PBX 110), and transmitted from the IP telephone 120 to a destination terminal that is an external terminal of the destination. The transmission voice data to be input is input, and the input transmission voice data is output to the IP-PBX 110 (the VoIP gateway 140 provided in the IP-PBX 110). Also, the CTI server 150 inputs and receives the received voice data received by the IP-PBX 110 (the VoIP gateway 140 included in the IP-PBX 110) and addressed to the receiving terminal that is the destination IP telephone 120. Output the received audio data to the receiving terminal. The CTI server 150 is an example of a data relay server.

  The call recording data unit 160 stores transmission voice data or reception voice data input by the CTI server 150. The call recording data unit 160 may be a storage device external to the CTI server 150 or a storage device built in the CTI server 150.

  In the CTI server 150, voice packets (an example of transmission voice data, reception voice data, and voice data) when a call is made between the IP telephone 120 that is an extension telephone and the external terminal 320 of the external network 300 pass through the CTI server 150. . At this time, voice packets are stored in the call recording data unit 160 (an example of a storage device) by the voice data storage unit (see FIG. 6) provided in the CTI server 150. Hereinafter, the voice data exchanged in the components included in the IP telephone system 600 may be referred to as voice packets, transmission voice data, reception voice data, and the like.

  For example, the CTI server 150 has a built-in fixed disk or the like and has a database function, so that a CTI service function such as “record voice packet” or “VR (automatic voice response)” can be easily incorporated. it can.

  FIG. 5 is a diagram illustrating an example of hardware resources of the CTI server 150 according to the present embodiment. In FIG. 5, the CTI server 150 includes a CPU 911 (also referred to as a central processing unit, a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, and a processor) that executes a program.

  The CPU 911 is connected to the ROM 913, the RAM 914, the communication board 915 (LAN board), and the magnetic disk device 920 via the bus 912, and controls these hardware devices. Instead of the magnetic disk device 920, a storage device such as an optical disk device or a memory card read / write device may be used.

  The RAM 914 is an example of a volatile memory. The storage medium of the ROM 913 and the magnetic disk device 920 is an example of a nonvolatile memory. These are examples of a storage device or a storage unit.

  The communication board 915 (LAN board) is an example of an input unit and an input device. The communication board 915 (LAN board) is an example of an output unit or an output device.

  The communication board 915 (LAN board) is connected to a LAN or the like. The communication board 915 (LAN board) may be connected to the Internet.

  The magnetic disk device 920 stores an operating system 921 (OS), a program group 923, and a file group 924. The programs in the program group 923 are executed by the CPU 911 and the operating system 921.

  The program group 923 stores programs for executing functions described as “˜unit” and “˜means” in the description of the embodiments described below. The program is read and executed by the CPU 911. The file group 924 includes information, data, signal values, variable values, and parameters that are described as “determination results of”, “calculation results of”, and “processing results of” in the description of the embodiments described below. Are stored as items “˜file”, “˜database”, and “˜data”. “˜file”, “˜database”, and “˜data” are stored in a recording medium such as a disk or a memory. Information, data, signal values, variable values, and parameters stored in a storage medium such as a disk or memory are read out to the main memory or cache memory by the CPU 911 via a read / write circuit, and extracted, searched, referenced, compared, and calculated. Used for CPU operations such as calculation, processing, output, printing, and display. Information, data, signal values, variable values, and parameters are temporarily stored in the main memory, cache memory, and buffer memory during the CPU operations of extraction, search, reference, comparison, operation, calculation, processing, output, printing, and display. Is remembered.

  In addition, the arrows in the flowcharts described in the description of the embodiments described below mainly indicate input / output of data and signals, and the data and signal values are recording media such as the memory of the RAM 914 and the magnetic disk of the magnetic disk device 920. To be recorded. Data and signals are transmitted by a bus 912, a signal line, a cable, and other transmission media.

  In addition, what is described as “to part” in the description of the embodiment described below may be “to circuit”, “to device”, “to device”, “means”, and “to step”. ”,“ ˜procedure ”, or“ ˜processing ”. That is, what is described as “˜unit” may be realized by firmware stored in the ROM 913. Alternatively, it may be implemented only by software, or only by hardware such as elements, devices, substrates, and wirings, by a combination of software and hardware, or by a combination of firmware. Firmware and software are stored in a recording medium such as a magnetic disk as a program. The program is read by the CPU 911 and executed by the CPU 911. That is, the program causes the computer to function as “to part” described below. Alternatively, the procedure or method of “to part” described below is executed by a computer.

  FIG. 6 is a functional block diagram of IP telephone system 600 according to the present embodiment. FIG. 7 is a flowchart showing an IP telephone communication method at the time of call origination (at the time of voice data transmission) of IP telephone system 600 according to the present embodiment. FIG. 8 is a flowchart showing another example of the IP telephone communication method at the time of call origination (voice data transmission) of IP telephone system 600 according to the present embodiment. FIG. 9 is a flowchart showing an IP telephone communication method at the time of an incoming call (at the time of receiving voice data) of IP telephone system 600 according to the present embodiment. FIG. 10 is a flowchart showing another example of the IP telephone communication method at the time of an incoming call (at the time of receiving voice data) of IP telephone system 600 according to the present embodiment. In the configuration of FIG. 6, the same reference numerals are given to the same configurations as those in FIG. 4, and descriptions thereof are omitted.

  As illustrated in FIG. 6, the CTI server 150 includes a voice data storage unit 1501, a server-side call control unit 1502, a voice data output unit 1503, and a service providing unit 1504. The audio data storage unit 1501 is an example of a data storage unit. The audio data output unit 1503 is an example of a data output unit.

  The flow of processing of the IP telephone communication method when the IP telephone system 600 makes a call (during voice data transmission) will be described with reference to FIGS.

  In S701, a call request from the IP telephone 120 to the destination terminal is output. The call request output from the IP telephone 120 includes destination information for specifying the destination terminal. The destination information is, for example, a telephone number of a destination (sending destination).

<Exchange side call control step>
In step S <b> 702, the non-SBC type call control server 130 (switch side call control unit) inputs a call request from the IP telephone 120. When a call request is input from the IP telephone 120, the non-SBC type call control server 130 executes switching side call control for establishing a call between the IP telephone 120 and the CTI server 150 by the processing device. The non-SBC type call control server 130 generates call control data (destination data) including destination information by the processing device based on the input call request. The call control data includes various information for call control (for example, transmission time, transmission source address, transmission destination (destination address), etc.). The non-SBC type call control server 130 outputs the generated call control data to the CTI server 150 during the switching side call control.

  Here, when a call is established between the IP telephone 120 and the CTI server 150 by the switching side call control by the non-SBC type call control server 130, voice guidance is output from the CTI server 150 to the IP telephone 120 of the transmission source. May be. For example, the CTI server 150 stores voice guidance in a storage device in advance, and outputs predetermined voice guidance to the caller IP telephone 120 until a call is established with the destination external line terminal 320. The CTI server 150 outputs, for example, a message such as “please wait” as voice guidance.

<Audio data input and storage step>
In S703, the voice data storage unit 1501 included in the CTI server 150 transmits the voice transmitted from the IP telephone 120 in a state where the call is established by the switch side call control of the non-SBC type call control server 130 (switch side call control unit). Waiting for data input. The voice data storage unit 1501 receives call control data output from the non-SBC type call control server 130 during the exchange side call control.

  When the transmission voice data is output from the IP telephone 120, the voice data storage unit 1501 inputs the output transmission voice data, and associates the input transmission voice data with the input call control data as call information data. It is stored in the call recording data unit 160 (storage device).

  That is, the call recording data unit 160 stores transmission voice data associated with various information such as a transmission time, a transmission source address, and a transmission destination (destination) address.

<Server side call control step>
In S <b> 704, the server-side call control unit 1502 included in the CTI server 150 performs a call between the CTI server 150 and the VoIP gateway 140 of the IP-PBX 110 when the non-SBC type call control server 130 executes the switch-side call control. The server side call control for establishing the server is performed by the processing device.

<Audio data output step>
In S705, since the call is established between the CTI server 150 and the VoIP gateway 140, the voice data output unit 1503 outputs the transmission voice data input in S703 to the VoIP gateway 140.

<Sending gateway step>
In step S <b> 706, the VoIP gateway 140 inputs transmission voice data from the voice data output unit 1503 in a state where a call between the VoIP gateway 140 and the CTI server 150 is established. The VoIP gateway 140 transmits the input transmission voice data to the destination terminal via the external network 300 according to the call control protocol.

  Next, with reference to FIG. 8, another example of the IP telephone communication method at the time of call origination (voice data transmission) of IP telephone system 600 will be described. In FIG. 8, the same steps as those in FIG. 7 are denoted by the same step symbols, and the description thereof is omitted.

  The processing in S701 and S702 is the same as the processing in FIG. After the process of S702, the process proceeds to S713.

<Server side call control step>
In S713, the server-side call control unit 1502 included in the CTI server 150 performs a call between the CTI server 150 and the VoIP gateway 140 of the IP-PBX 110 when the non-SBC type call control server 130 executes the switch-side call control. The server side call control for establishing the server is executed using the processing device.

<Audio data input and storage step>
In S702 and S713, the exchange side call control by the non-SBC type call control server 130 and the server side call control by the server side call control unit 1502 included in the CTI server 150 are executed between the IP telephone 120 and the VoIP gateway 140. The call is established. When a call between the IP telephone 120 and the VoIP gateway 140 is established, the voice data storage unit 1501 waits for input of transmission voice data from the IP telephone 120. The voice data storage unit 1501 receives call control data output from the non-SBC type call control server 130 during the exchange side call control.

  In step S714, when the transmission voice data is output from the IP telephone 120, the voice data storage unit 1501 inputs the output transmission voice data, associates the input transmission voice data with the input call control data, and makes a call. The information is stored in the call recording data unit 160 (storage device) as information data.

  That is, the call recording data unit 160 stores transmission voice data associated with various information such as a transmission time, a transmission source address, and a transmission destination (destination) address.

  After S714, the process proceeds to S705. The processes in S705 and S706 are the same as those in FIG.

  This is the end of the description of the IP telephone communication method when the IP telephone system 600 makes a call (when transmitting voice data).

  By the processing at the time of the call from the IP telephone 120 to the destination terminal, the call between the IP telephone 120 and the CTI server 150 and the call between the CTI server 150 and the VoIP gateway 140 are established. Thus, the call between the IP telephone 120 and the destination terminal is established. In a state where a call between the IP telephone 120 and the destination terminal is established, a voice packet (transmission voice data) transmitted from the IP telephone 120 reaches the destination terminal from the IP telephone 120 via the CTI server 150. Voice packets transmitted from the destination terminal are transmitted to the IP telephone 120 via the VoIP gateway 140 and the CTI server 150. That is, all voice data exchanged in a state where a call between the IP telephone 120 and the destination terminal is established passes through the CTI server 150.

  The voice data storage unit 1501 of the CTI server 150 stores voice data exchanged in a state where a call between the IP telephone 120 and the destination terminal is established, together with call control data, in the call recording data unit 160. The voice data storage unit 1501 stores the call control data together with the voice packet as the call control data of the voice packet transmitted from the destination terminal using information that can be acquired by a general call control protocol.

  Next, a processing flow of the IP telephone communication method when voice data is received by the IP telephone system 600 will be described with reference to FIGS.

  In step S <b> 801, the VoIP gateway 140 receives an incoming call request from the external network 300 to the destination IP telephone 120. The incoming request received by the VoIP gateway 140 includes incoming information including information for specifying the incoming terminal. The incoming call information includes, for example, a destination telephone number (address), a caller telephone number (address), an incoming time, and the like.

<Incoming gateway step>
In S802, when receiving the incoming request from the external network 300, the VoIP gateway 140 outputs the incoming request to the CTI server 150 based on the received incoming request. In other words, when receiving the incoming request, the VoIP gateway 140 executes call control for establishing a call between the VoIP gateway 140 and the CTI server 150 by the processing device.

<Server side call control step>
In step S <b> 803, the server-side call control unit 1502 included in the CTI server 150 receives the incoming request from the VoIP gateway 140 and performs server-side call control for establishing a call between the VoIP gateway 140 and the CTI server 150. To execute. Further, when an incoming request is input from the VoIP gateway 140, the server-side call control unit 1502 establishes a call between the CTI server 150 and the destination IP telephone 120 (incoming terminal) based on the input incoming request. For this purpose is output to the non-SBC type call control server 130.

  When the incoming call request is input from the VoIP gateway 140, the server-side call control unit 1502 generates call control data (incoming data) including incoming call information based on the received incoming call request. The call control data includes various types of information for call control (for example, incoming time, source address, destination address, etc.).

  Here, a call is established between the VoIP gateway 140 and the CTI server 150 by the server-side call control by the server-side call control unit 1502, and a call is established between the originating external terminal 320 and the CTI server 150. Then, voice guidance may be output from the CTI server 150 to the caller's external terminal 320. For example, the CTI server 150 stores voice guidance in a storage device in advance, and outputs predetermined voice guidance to the caller's external terminal 320 until a call with the destination IP telephone 120 is established. The CTI server 150 outputs, for example, a message such as “please wait” or an advertisement message as voice guidance.

<Audio data input and storage step>
In S804, when the processing device determines that the call has been established between the VoIP gateway 140 and the CTI server 150 by the server-side call control unit 1502, the voice data storage unit 1501 waits for incoming voice data from the VoIP gateway 140. It becomes. When a call is established between the VoIP gateway 140 and the CTI server 150 and the incoming voice data is input from the VoIP gateway 140, the voice data storage unit 1501 stores the received incoming voice data in the call recording data unit 160 (stores Device).

  The voice data storage unit 1501 stores the call control data generated by the server-side call control unit 1502 and the input received voice data in the call recording data unit 160 as call information data in association with each other.

  In other words, the call recording data unit 160 stores incoming voice data associated with various information such as the incoming time, source address, destination address, and the like.

<Exchange side call control step>
In step S <b> 805, the non-SBC type call control server 130 inputs the incoming call request output by the server side call control unit 1502. When the incoming call request is input, the non-SBC type call control server 130 performs switching side call control for establishing a call between the CTI server 150 and the IP telephone 120 as the receiving terminal. It is executed by the processing device.

<Audio data output step>
In S806, the voice data output unit 1503 of the CTI server 150 outputs the input transmission voice data to the IP telephone 120, which is the receiving terminal, because the call is established by the non-SBC type call control server 130.

  Next, another example of the IP telephone communication method when the IP telephone system 600 is called (when voice data is received) will be described with reference to FIG. 10, the same steps as those in FIG. 9 are denoted by the same step symbols, and the description thereof is omitted.

  The processing from S801 to S803 is the same as the processing in FIG. After the process of S803, the process proceeds to S814.

<Exchange side call control step>
In S814, the non-SBC type call control server 130 inputs the incoming call request output by the server side call control unit 1502. When the incoming call request is input, the non-SBC type call control server 130 performs switching side call control for establishing a call between the CTI server 150 and the IP telephone 120 as the receiving terminal. It is executed by the processing device.

<Audio data input and storage step>
In S803 and S814, when the server side call control by the server side call control unit and the switch side call control by the non-SBC type call control server 130 are executed, a call between the VoIP gateway 140 and the IP telephone 120 is made. Establish. In other words, a call is established between the source external terminal 320 and the destination IP telephone 120.

  In step S815, when the processing device determines that the call has been established between the VoIP gateway 140 and the IP telephone 120, the voice data storage unit 1501 waits for incoming voice data from the VoIP gateway 140. When the incoming voice data is input from the VoIP gateway 140 in a state where a call is established between the VoIP gateway 140 and the IP telephone 120, the voice data storage unit 1501 stores the received incoming voice data in the call recording data unit 160 (stores Device).

  The voice data storage unit 1501 stores the call control data generated by the server-side call control unit 1502 and the input received voice data in the call recording data unit 160 as call information data in association with each other.

  In other words, the call recording data unit 160 stores incoming voice data associated with various information such as the incoming time, source address, destination address, and the like.

  After S815, the process proceeds to S806. The processing in S806 is the same as that in FIG.

  This is the end of the description of the processing flow of the IP telephone communication method when the IP telephone system 600 is called (when voice data is received).

  A call between the VoIP gateway 140 and the CTI server 150 and a call between the CTI server 150 and the IP telephone 120 are established by processing at the time of the incoming call from the external terminal to the IP telephone 120 as the receiving terminal. That is, a call between the external line terminal and the IP telephone 120 as the receiving terminal is established. The voice data transmitted from the IP telephone 120 in a state where the call between the external terminal and the receiving terminal is established reaches the external terminal via the CTI server 150 from the IP telephone 120 and is transmitted from the external terminal. Data is transmitted to the IP telephone 120 via the VoIP gateway 140 and the CTI server 150. That is, all the voice data exchanged in a state where the call between the external terminal and the IP telephone 120 as the receiving terminal is established passes through the CTI server 150.

  The voice data storage unit 1501 of the CTI server 150 stores voice data exchanged with the call recording data unit 160 together with call control data in a state where a call is established between the external line terminal and the IP telephone 120 which is a receiving terminal. The voice data storage unit 1501 stores, as call control data of voice data transmitted from an external terminal, call control data together with voice data using information that can be acquired by a general call control protocol.

  Through the above processing, voice data (an example of call information data) associated with the call control data is stored in the call recording data unit 160 of the IP telephone system 600. By providing such a call recording data unit 160, the CTI server of the IP telephone system 600 can construct a fine CTI service such as a call recording service, a call recording service, and a telephone conference service.

  The service providing unit 1504 included in the CTI server shown in FIG. 6 is a processing device for a CTI service (call information data use service) that is a service using call information data stored in the call recording data unit 160 by the voice data storage unit 1501. Provided by.

  FIG. 11 is a sequence diagram showing the flow of processing of the IP telephone communication method at the time of calling by IP telephone system 600 in the present embodiment. FIG. 12 is a sequence diagram showing the flow of processing of the IP telephone communication method when an incoming call is received by IP telephone system 600 in the present embodiment.

  FIG. 11 shows an example of a call protocol for calling from the IP telephone 120 to the VoIP gateway 140 via the non-SBC call control server 130 (for example, SIP server) in the IP-PBX 110. That is, it shows a sequence of a call from the IP telephone 120 to the external line terminal 320 and a call to the external line network 300 (external line call). The voice call is performed by voice communication based on the exchange side call control between the IP telephone 120 and the CTI server 150 and voice communication based on the server side call control between the CTI server 150 and the VoIP gateway 140. In the CTI server 150, You are relaying a voice call. With such a configuration, the voice packet goes through the CTI server 150 together with the call control information (call control data).

  For example, the non-SBC type call control server 130 in the IP-PBX 110 checks the destination telephone number included in the call request (INVITE) (call request) from the IP telephone 120 and makes a call request to the outside line (0 call etc.) ), The CTI server 150 is designated as the connection destination of the session (voice packet) of the IP telephone 120. In this way, the non-SBC type call control server 130 performs call control (switch side call control) between the IP telephone 120 and the CTI server 150.

  FIG. 12 shows an example of an incoming call protocol for requesting an incoming call from the VoIP gateway 140 to the IP telephone 120 via the non-SBC call control server 130 in the IP-PBX 110. In other words, this is an incoming call from the external line terminal 320 to the IP telephone 120 and shows a sequence of an incoming call from the external line network 300. The voice call is performed by voice communication by server side call control between the VoIP gateway 140 and the CTI server 150 and voice communication by switch side call control between the CTI server 150 and the IP telephone 120, and the CTI server 150 performs voice communication. The call is being relayed. With such a configuration, the voice packet goes through the CTI server 150 together with the call control information (call control data).

  As described above, the CTI server 150 is an SBC call control server that can execute call control and handle voice packets. Since the CTI server 150 (SBC type call control server) has a built-in disk device and database, it can be said that the reliability is generally lower than that of the non-SBC type call control server 130 (server that does not handle voice packets). Therefore, when a failure occurs in the CTI server 150, a function for disconnecting the CTI server 150 is required.

  FIG. 13 is a diagram illustrating a disconnecting function of the CTI server 150 when a failure occurs in the CTI server 150 in the present embodiment. As shown in FIG. 13, in the IP telephone system 600, the CTI server 150 in which a failure has occurred is automatically disconnected from the system. The automatic disconnection of the CTI server 150 from the system may be physically or electrically disconnected, or may be connected but not accessible (not accessed) and disconnected internally. Good. The non-SBC type call control server 130 and the VoIP gateway 140 execute call control, thereby enabling voice communication.

  The non-SBC type call control server 130 and the VoIP gateway 140 can normally designate primary and secondary (main and sub) partners as counterparts to perform call control. In IP telephone system 600 of the present embodiment, non-SBC type call control server 130 and VoIP gateway 140 designate CTI server 150 as the primary counterpart. Here, the non-SBC call control server 130 and the VoIP gateway 140 are designated so that they can communicate with each other as secondary partners. Even if the CTI server 150 goes down, the main body of the non-SBC type call control server 130 and various VoIP gateways 140 can communicate directly. As described above, in the IP telephone system 600, even if the CTI server 150 is disconnected, by setting in advance so that communication is possible, the provision of the CTI service is stopped, but the function as the IP telephone 120 is maintained. Can be used with confidence.

Embodiment 2. FIG.
In the present embodiment, a configuration assuming a large-scale IP telephone system (large-scale) 604 having a very large number of extensions will be described. In the case of the IP-PBX 110 used in the IP telephone system (large scale) 604, one CTI server may be insufficient.

  FIG. 14 is a diagram showing a system configuration of IP telephone system (large scale) 604 in the present embodiment. In FIG. 14, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 14, the configuration different from the first embodiment is that a CTI server group 180 is used instead of the CTI server 150. The CTI server group 180 has a cluster configuration including a plurality of CTI servers 181 and 182. The CTI server group 180 includes one CTI cluster controller 183 and a plurality of CTI servers 181 and 182. FIG. 14 shows a cluster configuration in the case of two CTI servers, but since there is no limit on the number of CTI servers, there is no limitation on the number of calls such as call recording.

  The CTI cluster controller 183 has a built-in proxy call control server function. The proxy call control server is a call control server having a very light load because it can control the voice packet not to be handled by its own server by using a call control protocol.

  As shown in FIG. 14, the CTI cluster controller 183 uses the processing device to change the voice packet flow in the case of external line transmission (transmission from the IP telephone 120 to the VoIP gateway 140 in the IP-PBX) using the call control protocol. To any one of a plurality of CTI servers. In addition, the CTI cluster controller 183 uses a processing device to send a voice packet in the case of an incoming call to the outside line (incoming call from the VoIP gateway 140 in the IP-PBX to the IP telephone 120) among a plurality of CTI servers by the call control protocol. To one of the following.

  The functions of a plurality of distributed CTI servers (CTI servers 181 and 182) are the same as in the stand-alone type. However, as an option, a VM (Virtual Machine) function may be mounted on the CTI server, and the function of the CTI server may be operated as a guest OS of the VM function.

  In the CTI servers (181, 182) in the cluster configuration, the CTI cluster controller 183 monitors the status of each CTI server by a method such as PING (Packet / Internet / Grouper). Therefore, the CTI cluster controller 183 can disconnect the CTI server in which the failure has occurred from the system and substitute another active CTI server for processing. When the CTI cluster controller 183 disconnects the failed CTI server from the system, the CTI server may be physically or electrically disconnected, or it is connected but cannot be accessed (not accessed) for internal processing. It may be separated.

  In addition, when the optional VM function is installed in the CTI server, it is also possible to start up a new CTI server and substitute processing. As described above, the cluster configuration of the CTI servers can manage a plurality of CTI servers, thereby enabling scale (Scalability), availability (Availability), and reliability (Reliability) that cannot be achieved by a conventional call recording device or CTI server. ) Can be realized.

Embodiment 3 FIG.
In the present embodiment, a CTI server A 190 having a specific software configuration (functional block configuration) will be described as an example of the CTI server 150 described above. FIG. 15 is a diagram showing a software configuration of the CTI server A 190 in the present embodiment. According to the CTI server A 190 according to the present embodiment, various CTI service functions can be performed using a built-in web server function (web server unit), a personal computer (PC), a mobile phone, or a web browser of a smartphone. Can be realized.

  The CTI server A 190 includes functional blocks of an SBC type call control server unit, a dial plan control unit, and a Web server unit. The SBC call control server unit includes functional blocks such as a call control channel control unit, a CODEC conversion processing unit, and a PBX control unit. The CTI server A 190 implements functions including the functions described in the first embodiment by using functional blocks of the CTI server A 190. Hereinafter, each functional block will be described.

<SBC call control server unit>
The SBC call control server unit can handle both voice packets and call control packets. That is, the SBC type call control server unit handles voice data and also performs call control. The SBC type call control server unit has a call control channel control unit and a CODEC conversion processing unit for voice packet processing. The call control channel control unit and the CODEC conversion processing unit are called from the PBX control unit each time an incoming call is received, and the voice packets are relayed between the non-SBC type call control server 130 and the IP telephone 120 in the IP-PBX 110 serving as a communication partner. Perform the replacement process.

<Call control channel controller>
In the SBC type call control server, the “session” of the voice packet and the “dialog” of the call control packet are synchronized. That is, the “session” is associated with the “dialog” and controlled. Therefore, the operation of the call control channel control unit controls both “dialog” and “session”. The network definition of the IP telephone 120 (including the non-SBC type call control server 130 in the IP-PBX) serving as a communication partner of the call control channel control unit is held in the “call control channel definition file”.

<CODEC conversion processor>
The CODEC conversion processing unit is called from the PBX control unit as necessary. Since the voice CODEC system of the non-SBC type call control server 130 and the IP telephone 120 in the IP-PBX that is the communication partner of the call control channel control unit may be different from the desired voice CODEC system, the following Perform CODEC conversion processing. (1) Processing for enabling calls between terminals with different CODECs. (2) Processing for confirming dial tone during a call. (3) Processing for recording a call with the designated CODEC.

<PBX control unit>
As shown in FIG. 15, the PBX control unit performs relay transfer processing of a call between the IP-PBX non-SBC call control server 130, the VoIP gateway 140, and the IP telephone 120. Voice packets from the non-SBC call control server 130, the VoIP gateway 140, and the IP telephone 120 in the IP-PBX, which are communication partners, reach the PBX control unit via the CODEC conversion processing unit.

  In the case of an incoming call from an external line (external line terminal 320) to an internal telephone (IP telephone 120), communication is performed from a VoIP gateway 140 connected to the external line network 300 using a call control protocol (for example, SIP protocol) including voice. Processing is performed. These complicated incoming call processing can be controlled by the dial plan control unit. In the incoming call process described (defined (defined) as software) in the dial plan control unit, at the same time as recording the call, the incoming call log is written into the database, or a telephone such as an IVR (voice automatic answering device) or answering machine is used. Except for the process of not calling, a calling process for calling another telephone or another PBX is possible. Similarly, in the case of outgoing call processing from the IP telephone 120 which is an extension telephone, communication is performed with a non-SBC call control server 130 (for example, SIP server) in the IP-PBX 110 using a call control protocol (for example, SIP protocol). The relay process to the VoIP gateway 140 in the IP-PBX 110 can be controlled by the dial plan control unit. In the incoming call processing described (written (defined) as software) by the dial plan control unit, it is possible to start the call recording and simultaneously write the outgoing call log into the database. Processing for calling such a dial plan control unit is described in a “dial plan definition file”.

<Dial plan control unit>
In the CTI server A 190, complicated processing is not described in the “dial plan definition file”, and control is performed by a dial plan control unit described in a general-purpose language that operates in an external environment (separate process). A call request from the dial plan control unit to the PBX control unit is made through an API unit (not shown). The dial plan control unit looks at the first digit of the destination telephone number and determines to which external line (VoIP gateway) the call is relayed. For example, if the destination telephone number starts with 0, the call is relayed to the outside VoIP gateway, and if the destination telephone number starts with 6, the call is relayed to the extension VoIP gateway to another site in the company.

<Web server part>
The actual CTI service is performed by the Web server unit. A CTI application (a Web application that provides a CTI service) that runs on a Web server searches the outgoing / incoming log written in the database from the dial plan control unit, and provides a CTI service such as an incoming call history display. The CTI application (Web application) holds an internal telephone database and an external telephone database, and provides a Web phone book function to a terminal and a “Click to Call” function. The “Click to Call” function is a mechanism in which when the other party's telephone number is clicked, the registered telephone is called from the CTI server, and then the other party's telephone is called. The Web browser that is a terminal of the Web server is not only a PC but also a mobile phone and a smartphone used in a mobile environment.

  The process of the dial plan control unit in the CIP server A 190 is activated every time a call is received from an outside line or extension, but the process of the Web server unit is performed by a request from a Web browser of a PC or a mobile phone. Since these processes are activated, it is difficult to synchronize with each other. Therefore, the interface between the dial plan control unit and the Web server unit uses a database. The dial plan control unit writes the call log and call recording data to the database every time a call is received from an outside line or an extension line. Whenever there is a request from a PC or mobile phone web browser, the web server unit reads the call log of this database and provides various CTI services. In the case of this method, synchronization processing such as inter-process communication between the dial plan control unit and the Web server unit is unnecessary.

  Above, description of CTI server A190 which is an example of the concrete software structure (functional block structure) of CTI server 150 is completed.

  As described above, the CTI server 150 of the IP telephone system described in the first to third embodiments has the following characteristics.

  Since the CTI server 150 according to the first to third embodiments communicates with a general call control protocol, the CTI service function can be provided even to a small call control server having no API function. Further, since the CTI server 150 handles voice packets, it is possible to collect voice packets without losing them even during call recording, and can provide a fine CTI service function to a general call control server. We can expect new services.

  According to IP telephone system 600 according to the first to third embodiments, between CTI server 150 and non-SBC call control server 130 of IP-PBX 110 and between TI gateway 150 and VoIP gateway 140 in IP-PBX. Since the interface between them generally uses a standard call control protocol compliant with RFC3261, any IP-PBX can provide a CTI service.

  According to IP telephone system 600 according to the first to third embodiments, voice packets between CTI server 150 and IP telephone 120 of IP-PBX 110 and between CTI server 150 and VoIP gateway 140 in IP-PBX 110. Since the interface generally uses a standard SDP protocol compliant with RFC 2327 / RFC 3264 and an RTP protocol compliant with RFC 3550 / RFC 3551, any IP telephone 120 or IP-PBX 110 can provide a CTI service.

  According to IP telephone system 600 according to the third embodiment, CTI server 150 (CTI server A 190) includes a Web server unit for a user interface, so call recording, call log, and various outgoing / incoming calls control. CTI functions such as services can be provided to mobile phones with PCs and Web browsers.

  According to the IP telephone system 600 according to the second embodiment, the call control protocol between the non-SBC type call control server 130 and the VoIP gateway 140 in the IP-PBX is provided with redundancy. Even if 150 fails, it can be automatically disconnected. With this function, even if the CTI server 150 fails, the CTI service cannot be provided, but the basic call function can be maintained.

  According to IP telephone system 600 according to the first to third embodiments, CTI server 150 can be constructed without using an API (Application, Program, Interface) function provided by IP-PBX. Independent CTI services can be provided.

  Although the first to third embodiments have been described above, two or more of these embodiments may be combined. Alternatively, one of these embodiments may be partially implemented. Or you may implement combining two or more embodiment among these partially.

  In the description of the first embodiment, the voice data storage unit 1501, the server-side call control unit 1502, the voice data output unit 1503, and the service providing unit 1504 in the CTI server 150 are configured as independent functional blocks. It may be a single functional block. Alternatively, the voice data storage unit 1501, the voice data output unit 1503, and the server-side call control unit 1502 may be a single functional block. Alternatively, all functional blocks may be independent functional blocks. Alternatively, these functional blocks may be configured in any other combination.

Embodiment 4 FIG.
In this embodiment, a telephone system 6000 including the CTI server A 190 described in the third embodiment and the mobile terminal device 2000 connected to the CTI server A 190 will be described.

  FIG. 16 is a diagram showing an overall configuration of the telephone system 6000 according to the present embodiment. The outline of the overall configuration of the telephone system 6000 will be described with reference to FIG. FIG. 16 is a diagram corresponding to FIG. 15 described in the third embodiment. Components having the same functions as those in FIG. 15 are denoted by the same reference numerals or names, and description thereof is omitted.

  Mobile terminal device 2000 according to the present embodiment is a mobile terminal device having a browser function. Mobile terminal device 2000 according to the present embodiment includes, for example, a smartphone, a mobile phone with a browser, a personal digital assistant (PDA), a portable PC (personal computer), and the like. That is, the mobile terminal device has a browser function and a normal mobile phone function.

  As shown in FIG. 16, the mobile terminal device 2000 performs a call with the external line terminal 320 connected to the external line network 300 via the CTI server A 190. The CTI server A 190 executes call control for making a call between the mobile terminal device 2000 and the external terminal 320, and provides various CTI services to the mobile terminal device 2000. The CTI server A 190 is an example of a data relay server.

  The mobile terminal device 2000 outputs a call request signal for a call and a call disconnect request signal for disconnecting the call to the SBC type call control server unit 1910 provided in the CTI server A 190. Alternatively, the mobile terminal device 2000 inputs an incoming call request signal for a call or a call disconnection request signal for disconnecting the call from the SBC call control server unit 1910 provided in the CTI server A190.

  Here, the call control protocol handled by the mobile terminal device 2000 and the SBC type call control server unit 1910 is, for example, the SIP protocol. Here, the SBC type call control server unit 1910 may be referred to as a call control server unit or a SIP server unit. The mobile terminal device 2000 is also called an IP phone or a SIP phone.

  However, the call control protocol handled by the mobile terminal device 2000 and the SBC call control server unit 1910 is not limited to the SIP protocol, and may be a call control protocol for other IP phones. Examples of other IP telephone protocols include H.264. The H.323 protocol may be used. This embodiment can be applied to any other IP telephone protocol. In the present embodiment, modes of the CTI server A 190, the mobile terminal device 2000, and the telephone system 6000 that handle the SIP protocol as an example of a call control protocol will be described.

  Further, as described in the first embodiment, the SBC call control server unit 1910 can perform call control using the SIP protocol and can also perform voice packet communication using the RTP protocol. That is, the CTI server A 190 including the SBC type call control server unit 1910 is a server that can execute call control and also handle voice data (voice packets). That is, the CTI server A 190 has an IP-PBX function.

  The CTI server A 190 includes a web server unit 1930 (web server unit). As described in the third embodiment, the Web server unit 1930 has a Web server function using the HTTP protocol. The web server unit 1930 provides the mobile terminal device 2000 with a CTI service and a web application service in accordance with a request from a browser 2030 (see FIG. 17) (web browser) provided in the mobile terminal device 2000. That is, the CTI server A 190 has an IP-PBX function and a Web server function.

  FIG. 17 is a diagram showing functional blocks of the mobile terminal device 2000 and the CTI server A 190 according to the present embodiment. The functional blocks of the CTI server A 190 in FIG. 17 are functional blocks that mainly operate when the mobile terminal device 2000 makes a call with the external terminal 320 or the like via the CTI server A 190.

  First, functional blocks of the mobile terminal device 2000 will be described. The mobile terminal device 2000 includes a display screen 2010, a terminal-side call control unit 2020 (call control engine unit, SIP engine unit), a browser 2030, an information storage unit 2040, and an overall control unit 2050.

  The overall control unit 2050 controls the browser 2030 and the terminal-side call control unit 2020 included in the mobile terminal device 2000 using the processing device.

The browser 2030 includes a Web screen display unit 2031 and a button control unit 2032.
The web screen display unit 2031 of the browser 2030 is a destination input screen 2012 for inputting a destination telephone number 2041 for identifying a destination terminal that is the destination external terminal 320 from the web server unit 1930 of the CTI server A 190. (See FIG. 21). The browser 2030 displays the input destination input screen 2012 in the Web screen area 2011 (see FIG. 21) in the display screen 2010 area. Details will be described later.

  The browser 2030 (Web screen display unit 2031) inputs and inputs the destination input screen 2012 as an HTTP response from the Web server unit 1930 by transmitting an HTTP request compliant with the HTTP (HyperText / Transfer / Protocol) protocol. A destination input screen 2012 is displayed on the display screen 2010. Hereinafter, the process of the Web screen display unit 2031 may be described as the process of the browser 2030.

  For example, the mobile terminal device 2000 is wirelessly connected to a LAN, an in-house LAN, a WAN, the Internet, or the like, and can execute communication using the HTTP protocol with respect to the CTI server A190.

  In addition, the browser 2030 inputs a Web screen on which the telephone directory 1944 is displayed from the Web server unit 1930 as a transmission destination input screen 2012 and displays it on the display screen 2010. The browser 2030 inputs the destination telephone number by causing the user to select the destination telephone number from the displayed telephone directory 1944.

  Alternatively, the browser 2030 inputs a Web screen on which a communication history such as the incoming call history 1942 and the outgoing call history 1943 from the Web server unit 1930 is displayed as the destination input screen 2012 and displays it on the display screen 2010. The browser 2030 inputs the destination telephone number by causing the user to select the destination telephone number from the displayed communication history.

  The button control unit 2032 of the browser 2030 acquires the destination telephone number 2041 input from the destination input screen 2012. The information storage unit 2040 stores the destination telephone number 2041 acquired by the button control unit 2032 of the browser 2030 in a storage device such as a memory. Hereinafter, the process of the button control unit 2032 may be described as the process of the browser 2030.

  The browser 2030 (Web screen display unit 2031 and button control unit 2032) and the overall control unit 2050 may be collectively referred to as an IP phone application.

  The terminal-side call control unit 2020 outputs a call request signal and a call disconnection request signal compliant with a call control protocol (SIP (Session Initiation Protocol) protocol) to the SBC type call control server unit 1910. In addition, an incoming call request signal and a call disconnection request signal compliant with the call control protocol (SIP protocol) are input from the SBC call control server unit 1910. Then, when a call with the external terminal 320 is established, the terminal-side call control unit 2020 executes a call by transmitting and receiving voice data (voice packet) using the RTP protocol.

  The terminal-side call control unit 2020 includes a button display unit 2021, a signal input unit 2022, a destination information reading unit 2023, and a call control processing unit 2024.

  The button display unit 2021 displays a call-out button 2013 (call start button) (see FIG. 21) for inputting a call start instruction signal for instructing the start of a call. The terminal-side screen area 2016 (see FIG. 21) in the display screen 2010 area. ). Further, a disconnect button for inputting a call disconnect signal instructing disconnection of the call is displayed in the terminal-side screen area 2016 (see FIG. 21). Further, a clear button or the like may be displayed.

  The signal input unit 2022 inputs a call start instruction signal input from a call button 2013 (call start button) displayed in the terminal-side screen area 2016 of the display screen 2010.

  The destination information reading unit 2023 reads the destination telephone number 2041 stored in the information storage unit 2040 by the processing device.

  The call control processing unit 2024 generates a call request signal for requesting a call with the external terminal 320 (destination terminal) specified by the destination telephone number 2041 read from the information storage unit 2040, and the generated call request The signal is output to the SBC type call control server unit 1910.

  Next, functional blocks of the CTI server A 190 will be described. The functional blocks of the CTI server A 190 in FIG. 17 are functional blocks that mainly operate when the mobile terminal device 2000 makes a call with the external terminal 320 or the like via the CTI server A 190.

  As shown in FIG. 17, the CTI server A 190 includes an SBC call control server unit 1910, a dial plan control unit 1920, a Web server unit 1930, and a database 1940.

  As described above, the SBC type call control server unit 1910 (call control server unit) can perform call control using the SIP protocol and can also perform voice packet communication using the RTP protocol. That is, the CTI server A 190 including the SBC type call control server unit 1910 is a server that can execute call control and also handle voice data.

  The SBC type call control server unit 1910 receives a signal related to a call conforming to the call control protocol (SIP protocol) from the mobile terminal device 2000 or the VoIP gateway 140, and the mobile terminal device 2000 and the VoIP gateway 140 (external line terminal 320) communicate with each other. Call control related to call establishment or call disconnection is executed.

  The database 1940 stores information related to a call between the mobile terminal device 200 and the external line terminal 320. Information related to a call includes, for example, a call log 1941, an incoming call history 1942, an outgoing call history 1943, and call recording data. Further, a telephone book 1944 is stored in which telephone numbers used by users who use the telephone system 6000 (subscribers who subscribe to the telephone system 6000) are stored.

  Further, the database 1940 stores a screen 1945 displayed on the display screen 2010 by the Web server unit 1930. The screen 1945 is a variety of screens used for displaying the destination input screen 2012, for example.

  Further, the database 1940 stores destination information 1931 such as a destination telephone number input on the destination input screen 2012 displayed on the display screen 2010 by the Web server unit 1930. This destination information 1931 is used, for example, for the “Click to Call” function. The “Click to Call” function is a mechanism in which when the destination telephone number is clicked, the registered telephone number is called from the CTI server A 190 and then the destination telephone is called. Also called V-shaped call method. As described above, the CTI application (Web application) of the CTI server A 190 holds the extension telephone database and the external telephone database in the database 1940, and provides a Web phone book function to the terminal. to Call function.

  When a call between the mobile terminal device 2000 and the external terminal 320 is started, the dial plan control unit 1920 stores information on the started call in a database 1940 described later. When a call between the mobile terminal device 2000 and the external terminal 320 is started, the dial plan control unit 1920 stores a call log of the started call as a call log 1941 of the database 1940.

  The dial plan control unit 1920 may store the call log 1941 and may edit the incoming call history 1942, the outgoing call history 1943, etc. from the call log 1941 and store them in the database 1940.

  Further, the dial plan control unit updates the telephone book 1944 stored in the database 1940 based on the call destination telephone number, the caller telephone number, and the like of the started call.

  The web server unit 1930 (web server unit) executes a web server function based on the HTTP protocol. Based on a request (HTTP request) from the browser 2030 of the mobile terminal device 2000, the Web server unit 1930 transmits a destination input screen 2012, a CTI service provision screen, and the like as an HTTP response.

  Further, the web server unit 1930 receives information (call log 1941, incoming call history 1942, outgoing call history 1943, telephone book 1944) stored in the database 1940 based on a request (HTTP request) from the browser 2030 of the mobile terminal device 2000. , Call recording data, etc.) and a search result screen is displayed on the display screen 2010 of the mobile terminal device 2000.

  FIG. 18 is a diagram illustrating an example of hardware resources of the mobile terminal device 2000 according to the present embodiment. In the present embodiment, for example, a smart phone or a mobile phone with a browser is assumed as the mobile terminal device 2000.

  In FIG. 18, the mobile terminal device 2000 includes a CPU 6911 (also referred to as a central processing unit, a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a processor) that executes a program. The CPU 6911 is connected to the ROM 6913, the RAM 6914, the keyboard (K / B 6902), the communication board 6915, the touch panel 6909, the display screen 2010, the speaker 6920, the microphone 6921, and the antenna 6922 via the bus 6912, and controls these hardware devices. .

  The mobile terminal device 2000 may include other storage devices (for example, a semiconductor memory such as a flash memory). The RAM 6914 is an example of a volatile memory. A storage medium of a semiconductor memory such as the ROM 6913 or a flash memory is an example of a nonvolatile memory. These are examples of a storage device, a storage device, or a storage unit. A storage device in which input data is stored is an example of an input device, an input device, or an input unit, and a storage device in which output data is stored is an example of an output device, an output device, or an output unit. The communication board 6915 is an example of an input / output device, an input / output device, or an input / output unit.

  The communication board 6915 is, for example, wirelessly connected to a communication network such as a LAN (Local Area Network), an in-house LAN, the Internet, a WAN (Wide Area Network) such as ISDN, and a telephone line.

  In the storage device such as the ROM 6913, a program for executing the function of the function block described as “˜unit” in the description of the function block of the mobile terminal device 2000 is stored. The program is read by the CPU 6911 and executed by the CPU 6911.

  Information, data, signal values, variable values, and parameters stored in a storage medium such as a memory are read out to the main memory and cache memory by the CPU 6911 via a read / write circuit, and extracted, searched, referenced, compared, calculated, and calculated. Used for CPU operations such as processing, output, printing, and display. Information, data, signal values, variable values, and parameters are temporarily stored in the main memory, cache memory, and buffer memory during the CPU operations of extraction, search, reference, comparison, operation, calculation, processing, output, printing, and display. Is remembered.

  In addition, arrows in the flowchart described in this embodiment mainly indicate input / output of data and signals, and the data and signal values are recorded in a recording medium such as a memory of the RAM 6914. Data and signal values are transmitted online via a bus 6912, signal lines, cables, or other transmission media.

  In addition, what is described as “˜unit” in the embodiment may be “˜circuit”, “˜device”, “˜device”, and “˜step”, “˜procedure”, “˜”. Processing ". That is, what is described as “˜unit” may be realized by firmware stored in the ROM 6913. Alternatively, it may be implemented only by software, or only by hardware such as elements, devices, substrates, and wirings, by a combination of software and hardware, or by a combination of firmware. Firmware and software are stored as programs on a magnetic disk or other recording medium. The program is read by the CPU 6911 and executed by the CPU 6911. That is, the program causes the computer to function as “to part”. Alternatively, the procedure or method of “to part” is executed by a computer.

  FIG. 19 is a flowchart showing a flow of telephone communication processing of the telephone system 6000 according to the present embodiment. FIG. 20 is a flowchart showing a telephone communication process flow (continuation process of FIG. 19) of the telephone system 6000 according to the present embodiment.

  The processing of the mobile terminal device 2000 illustrated in FIGS. 19 and 20 is realized by, for example, reading a program (mobile terminal call program) stored in the storage device of the mobile terminal device 2000 by the processing device and executing the program by the processing device. Is done. The processing of the CTI server A 190 illustrated in FIGS. 19 and 20 is realized by, for example, reading a program stored in the storage device of the CTI server A 190 by the processing device and executing the program by the processing device.

  In the present embodiment, as the mobile terminal device 2000, for example, a smartphone including a touch panel is assumed. However, as described above, the mobile terminal device 2000 can be applied to a mobile phone with a browser, a personal digital assistant (PDA), a portable PC (personal computer), and the like. is there.

  When a user of the telephone system 6000 according to the present embodiment executes a call on the mobile terminal device 2000, for example, the user starts a mobile terminal call program from a touch panel mounted on the mobile terminal device 2000.

  In S101, the overall control unit 2050 activates the browser 2030 of the mobile terminal device 2000 by the processing device. The browser 2030 transmits an HTTP request requesting display of the destination input screen 2012 (see FIG. 21) on the display screen 2010 to the Web server unit 1930 of the CTI server A 190 by the processing device.

  Further, the overall control unit 2050 activates the terminal-side call control unit 2020 (call control engine unit, SIP engine unit) by the processing device. The button display unit 2021 of the terminal-side call control unit 2020 displays a call button 2013 and a disconnect button 2014 on the terminal-side screen region 2016 (call control screen region, SIP screen region) of the display screen 2010 by the processing device.

  In S102, the Web server unit 1930 of the CTI server A 190 sends an HTTP response for displaying the destination input screen 2012 (see FIG. 21) on the display screen 2010 of the mobile terminal device 2000, and the browser 2030 of the mobile terminal device 2000 uses the processing device. Send.

  In S103, the browser 2030 displays the destination input screen 2012 transmitted from the Web server unit 1930 on the Web screen area 2011 (see FIG. 21) of the display screen 2010 by the processing device (browser display processing).

  FIG. 21 is a diagram showing a display screen 2010 of the mobile terminal device 2000 according to the present embodiment. FIG. 22 is a diagram illustrating a display screen 2010 of the mobile terminal device 2000 according to the present embodiment, where (a) is a destination input screen displaying a phone book, and (b) is a destination displaying an incoming call history. It is a figure which shows an input screen.

  As shown in FIG. 21, the display screen 2010 of the mobile terminal device 2000 includes a Web screen area 2011 and a terminal-side screen area 2016. The screen displayed in the web screen area 2011 is a web screen transmitted from the web server unit 1930 in response to a request from the browser 2030 of the mobile terminal device 2000. The screen displayed in the terminal-side screen area 2016 is a screen (also called a call control screen or a SIP screen) displayed by the terminal-side call control unit 2020 (button display unit 2021) of the mobile terminal device 2000. The terminal-side screen area 2016 is also called a call control screen area or a SIP screen area.

  The Web screen area 2011 is an area above the display screen 2010 and occupies 80% to 85% of the entire area of the display screen 2010. The terminal-side screen area 2016 is a horizontal row of the area below the display screen 2010 and occupies 15% to 20% of the entire area of the display screen 2010.

  The area distribution (ratio) between the Web screen area 2011 and the terminal-side screen area 2016 is not limited to the above, and various area distributions are possible. For example, the distribution (ratio) of the areas of the Web screen area 2011 and the terminal-side screen area 2016 may be 70% and 30%, 50% and 50%, or 40% and 60%. It is preferable that the distribution (ratio) of the area between the Web screen area 2011 and the terminal-side screen area 2016 can be freely changed by a user operation.

  Further, the arrangement of the web screen area 2011 and the terminal-side screen area 2016 may be arranged vertically as shown in FIG. For example, the central portion may be the terminal-side screen region 2016, and the periphery thereof may be the Web screen region 2011, and any arrangement may be used. Then, it is preferable that the arrangement of the areas of the Web screen area 2011 and the terminal-side screen area 2016 can be freely changed by a user operation.

  As shown in FIG. 21, the destination input screen 2012 has, for example, a numeric keypad (1, 2, 3, 4, 5, 6, 7, 8, 9, 0) for inputting a telephone number, an asterisk button “*”, A sharp button “#”, function keys (F1 to F6), a clear key “CL”, and the like are displayed. In this way, the destination input screen 2012 is displayed in the Web screen area 2011 as if it is a telephone number input screen displayed on a SIP phone (IP telephone).

  Since the destination input screen 2012 is a Web screen transmitted from the Web server unit 1930, various types of Web applications are prepared in the Web server unit 1930 so that various types of destination input screens 2012 are displayed on the display screen 2010. It can be displayed in the area 2011. Various web applications are stored as a screen 1945 in the database 1940, for example.

  The call button 2013 is a button that is touched (or pressed) when the user starts a call. The call button 2013 is a call start instruction button that receives a call start instruction signal instructing the start of a call.

  The disconnect button 2014 is a button that is touched (or pressed) when the user ends the call and disconnects the call. The disconnect button 2014 is a call disconnection instruction button for receiving a call disconnection instruction signal for instructing termination (disconnection) of a call.

  As illustrated in FIG. 21, the terminal-side screen area 2016 is, for example, a horizontal row below the Web screen area 2011 of the display screen 2010. That is, the entire display screen 2010 is divided into approximately six columns in the vertical direction, the area for five columns from the top is the Web screen area 2011, and the bottom one column is the terminal-side screen area 2016.

  As shown in FIG. 21, by displaying a destination input screen 2012, a call button 2013, and a disconnect button 2014, the user can use it as a normal telephone screen. Since the destination input screen 2012 displayed in the Web screen area 2011 is a Web screen, various destination input screens 2012 can be displayed by preparing Web applications in the Web server unit 1930.

  FIG. 22 is a diagram showing variations of the destination input screen 2012 of the display screen 2010 according to the present embodiment. FIG. 22A shows a destination input screen 2012 (phone book screen 2012a), (b ) Is a diagram showing a destination input screen 2012 (incoming history screen 2012b) displaying the incoming history.

  As shown in FIG. 22A, the browser 2030 inputs a Web screen displaying the telephone book 1944 stored in the database 1940 from the Web server unit 1930 as a destination input screen 2012 (phone book screen 2012a). Are displayed on the display screen 2010. The browser 2030 allows the user to input a destination telephone number by causing the user to select a destination telephone number from the telephone directory 1944 displayed on the display screen 2010.

  As shown in FIG. 22B, the browser 2030 inputs a web screen displaying the incoming call history 1942 stored in the database 1940 from the web server unit 1930 as a destination input screen 2012 (incoming call history screen 2012b). Are displayed on the display screen 2010. The browser 2030 allows the user to input the destination telephone number by causing the user to select the destination telephone number from the incoming call history 1942 displayed on the display screen 2010.

  In step S <b> 105, the browser 2030 transmits the number input on the destination input screen 2012 to the web server unit 1930 by the processing device using the functions of the browser 2030 using the HTTP protocol and the web server unit 1930. At this time, the browser 2030 transmits each input character to the Web server unit 1930. In addition, the browser 2030 stores the number input on the destination input screen 2012 as the destination telephone number 2041 in the information storage unit 2040 (phone number storage processing).

  In S <b> 106, the Web server unit 1930 receives the number input from the browser 2030 to the destination input screen 2012 by the processing device using the functions of the browser 2030 and the Web server unit 1930 using the HTTP protocol. As described above, the Web server unit 1930 receives each character from the browser 2030. Further, the Web server unit 1930 stores the number input on the destination input screen 2012 as the destination information 1931 in the database 1940.

  In step S <b> 107, the signal input unit 2022 of the terminal-side call control unit 2020 inputs a call start instruction signal from the call button 2013.

  In S108, the destination information reading unit 2023 of the terminal-side call control unit 2020 reads the destination telephone number 2041 stored in the information storage unit 2040 by the processing device. When the destination telephone number 2041 is not stored in the information storage unit 2040, the destination information reading unit 2023 displays a message prompting the user to input the destination telephone number 2041 from the destination input screen 2012. It may be displayed in the message 2015 column.

  In S109, the call control processing unit 2024 of the terminal-side call control unit 2020 generates a call request signal for starting a call with the external terminal 320 specified by the destination telephone number by the processing device. The call control processing unit 2024 of the terminal-side call control unit 2020 transmits the generated call request signal to the SBC type call control server unit 1910 of the CTI server A 190 by the processing device. The call control processing unit 2024 of the terminal-side call control unit 2020 transmits, for example, a call request signal conforming to the call control protocol (SIP protocol) to the SBC type call control server unit 1910 (terminal-side call control processing).

  When the SBC type call control server unit 1910 receives a call request signal from the call control processing unit 2024 of the terminal-side call control unit 2020, the call between the mobile terminal device 2000 and the external terminal 320 specified by the destination telephone number 2041 The processing device executes call control for establishing a call for initiating. The SBC type call control server unit 1910 executes call control by a call control protocol (SIP protocol) in order to execute a call between the portable terminal device 2000 and the external terminal 320.

  At the time of call control processing of the SBC type call control server unit 1910, for example, the Web server unit 1930 may display the destination information 1931 stored in the database 1940 on the display screen 2010.

  In S111, when a call is established between the mobile terminal device 2000 and the external terminal 320, a call is executed.

  In the telephone system 6000 according to the present embodiment, the call button 2013 is touched (pressed) to notify the CTI server A 190 (IP-PBX) of the call. However, in some cases, the PBX function of a legacy key telephone can be emulated without performing such an operation. In a web browser on a smartphone or PC, a Java (registered trademark) script library having an Ajax function such as jQuery can be used. This can be notified asynchronously to the Web server (Web server unit 1930) by the above function (Ajax function) even when a numeric button or function button on the Web screen is pressed. Therefore, the web server unit 1930 detects a call request and requests the SBC type call control server unit 1910 to make a call without touching (pressing) the call button 2013 on the call control screen (SIP screen). In some cases, the PBX function of a legacy button telephone can be realized.

  In S112, when a call between the mobile terminal device 2000 and the external terminal 320 is started, the dial plan control unit 1920 stores information on the started call in the database 1940 (call information storage process).

  As described above, the SBC type call control server unit 1910 executes call control between the portable terminal device 2000 and the external terminal 320 using the call control protocol (SIP protocol), and when the call is established, the voice data ( Voice packet). The SBC call control server unit 1910 outputs the voice data (voice packet) being communicated to the VoIP gateway 140 and also to the dial plan control unit 1920.

  The dial plan control unit 1920 receives the voice data (voice packet) output from the SBC call control server unit 1910, and generates a call log 1941 from the input voice data (voice packet) by the processing device. Then, the dial plan control unit 1920 stores the generated call log 1941 in the database 1940. The call log 1941 includes, for example, call date and time, caller information, callee information, call recording data, and the like.

  The database 1940 stores a telephone book 1944 used in the telephone system 6000. The dial plan control unit 1920 stores the call log 1941 in the database 1940 and, at the same time, searches the phone book 1944 based on the caller information or the callee information of the call log 1941 to be stored. If there is no information indicating the sender information or destination information in the telephone book 1944, the contents of the sender information or destination information whose information is not stored in the telephone book 1944 are stored in the telephone book 1944. That is, the dial plan control unit 1920 updates the telephone book 1944 stored in the database 1940 based on the call destination telephone number 2041 (or the caller telephone number) of the started call.

  The database 1940 stores an incoming call history 1942 used in the telephone system 6000. The dial plan control unit 1920 stores the call log 1941 in the database 1940 and, at the same time, updates the incoming call history 1942 based on the contents of the call log 1941 to be stored.

  The database 1940 stores a call history 1943 used in the telephone system 6000. The dial plan control unit 1920 stores the call log 1941 in the database 1940 and at the same time updates the outgoing call history 1943 based on the contents of the call log 1941 to be stored.

  In S113, the signal input unit 2022 of the terminal-side call control unit 2020 inputs a call disconnection instruction signal for instructing the end of the call from the disconnect button 2014.

  The call control processing unit 2024 of the terminal-side call control unit 2020 generates a call disconnection request signal for requesting disconnection of a call between the mobile terminal device 2000 and the external line terminal 320 that is executing a call by the processing device. The call control processing unit 2024 of the terminal-side call control unit 2020 transmits the generated call disconnection request signal to the SBC type call control server unit 1910 of the CTI server A 190 by the processing device. For example, the call control processing unit 2024 of the terminal-side call control unit 2020 transmits a call disconnection request signal conforming to a call control protocol (SIP protocol) to the SBC type call control server unit 1910.

  In S114, the SBC type call control server unit 1910 receives a call disconnection request signal conforming to the call control protocol (SIP protocol) from the call control processing unit 2024 of the terminal side call control unit 2020. The SBC type call control server unit 1910 executes call control processing that disconnects a call between the portable terminal device 2000 and the external line terminal 320 by executing call control conforming to a call control protocol (SIP protocol).

  In S115, the call between mobile terminal apparatus 2000 and external line terminal 320 is disconnected, and the call between mobile terminal apparatus 2000 and external line terminal 320 is terminated.

  This is the end of the description of the telephone communication processing of the telephone system 6000 shown in FIGS.

  FIG. 23 is a diagram showing a display screen 2010 of the mobile terminal device 2000 at the time of incoming call according to the present embodiment.

  The terminal side call control unit 2020 receives an incoming call request signal from the SBC type call control server unit 1910 of the CTI server A 190.

  The terminal-side call control unit 2020 activates the IP phone application (overall control unit 2050).

  The browser 2030 is activated by the overall control unit 2050, and the browser 2030 sends an HTTP request for displaying the source information indicating the external terminal 320 that is the source of the incoming call request signal to the display screen 2010, and the Web server unit 1930 of the CTI server A190. Send to. This HTTP request includes the caller telephone number. A screen that displays source information indicating the external terminal 320 that is the source of the incoming call request signal is referred to as an incoming call display screen 2017.

  The Web server unit 1930 searches the telephone directory 1944 stored in the database 1940 for the sender information displayed on the incoming call display screen 2017, using the sender telephone number included in the HTTP request as a key. The Web server unit 1930 transmits an incoming call display screen 2017 that displays the acquired transmission source information to the browser 2030 of the mobile terminal device 2000 as an HTTP response.

  The browser 2030 displays the incoming call display screen 2017 in the Web screen area 2011 of the display screen 2010 by the HTTP response transmitted from the Web server unit 1930. In addition, the button display unit 2021 of the terminal-side call control unit 2020 displays a call button 2013, a disconnect button 2014, and a message 2015 column in the terminal-side screen area 2016.

  The screen variation of the incoming call display screen 2017 is stored as a screen 1945 in the database 1940. As a result, the incoming call display screen 2017 can provide various screens using the CTI application, as with the callee input screen 2012 at the time of outgoing call.

  In the present embodiment, the dial plan control unit 1920 stores the call log 1941 in the database 1940, and at the same time uses the call log 1941 to generate and update the incoming call history 1942, outgoing call history 1943, and telephone directory 1944. . In addition, the dial plan control unit 1920 uses the call log 1941, the incoming call history 1942, the outgoing call history 1943, and the telephone directory 1944 to generate information such as call recording information, user management information, and call use frequency information. Also good.

  Then, the dial plan control unit 1920 stores the generated information in the database 1940 and implements the CTI service. For example, the mobile terminal device 2000 subscribing to the telephone system 6000 can browse the information stored in the database 1940 via the Web server unit 1930 by requesting it from the browser.

  As described above, according to the telephone system 6000 according to the present embodiment, the CTI server A 190 (general connection type CTI server) has the IP-PBX function of the SBC type call control server system and the Web server function. This is effective when a terminal (portable terminal device 2000) having both the SIP phone function (IP telephone function) and the Web browser function is used as a telephone.

  According to the telephone system 6000 according to the present embodiment, data such as a call log and a telephone directory can be held on the CTI server A 190 side and displayed on the mobile terminal device 2000 via a Web browser. Therefore, even when the mobile terminal device 2000 is lost, it is possible to take security measures such as preventing the CTI server A 190 from showing the Web screen.

  According to the telephone system 6000 according to the present embodiment, the control of the buttons on the telephone terminal is realized by a general-purpose HTTP protocol. For this reason, even a SIP phone (IP telephone) operating on the mobile terminal device 2000 (smart phone, mobile phone terminal with browser, PC, PDA) can control buttons independent of the manufacturer.

  According to the telephone system 6000 according to the present embodiment, the dial plan control unit updates the database at the same time as the call. Therefore, even when the mobile terminal device 2000 requests the CTI service immediately after the call, the latest information is updated. CTI services can be provided.

  As mentioned above, although Embodiment 1-4 was demonstrated, you may implement combining 2 or more embodiment among these. Alternatively, one of these embodiments may be partially implemented. Or you may implement combining two or more embodiment among these partially.

  110, 110a, 110b IP-PBX, 120 IP telephone, 130 Non-SBC call control server, 131 SBC call control server, 140 VoIP gateway, 150 CTI server, 160 Call recording data section, 180 CTI server group, 181, 182 CTI server, 183 CTI cluster controller, 190 CTI server A, 300 external network, 320 external terminal, 401 LAN switch, 402 call recording device, 403 API-compliant CTI server, 404 call recording storage unit, 600 IP phone system, 601 IP phone System (normal scale), 602 IP telephone system (small scale), 604 IP telephone system (large scale), 911 CPU, 912 bus, 913 ROM, 914 RAM, 915 communication board, 920 magnetic Disk device, 921 OS, 923 program group, 924 file group, 1501 voice data storage unit, 1502 server side call control unit, 1503 voice data output unit, 1504 service providing unit, 1910 SBC type call control server unit, 1920 dial plan control Part, 1930 Web server part, 1931 destination information, 1940 database, 1941 call log, 1942 incoming call history, 1943 outgoing call history, 1944 phone book, 1945 screen, 2000 mobile terminal device, 2010 display screen, 2011 web screen area, 2012 outgoing Destination input screen, 2012a phone book screen, 2012b incoming call history screen, 2013 call button, 2014 disconnect button, 2015 message, 2016 terminal side screen area, 2017 incoming call display screen, 2020 Terminal call control unit, 2021 button display unit, 2022 signal input unit, 2023 destination information reading unit, 2024 call control processing unit, 2030 browser, 2031 Web screen display unit, 2032 button control unit, 2050 overall control unit, 2040 information Storage unit, 2041 destination telephone number, 6000 telephone system, 6902 K / B, 6909 touch panel, 6911 CPU, 6912 bus, 6913 ROM, 6914 RAM, 6915 communication board, 6920 speaker, 6921 microphone, 6922 antenna.

Claims (11)

A data relay server connected to an external line terminal, which performs a call with the external line terminal via a data relay server including a call control server unit that executes call control and a web server unit that executes a web server function In a mobile terminal device having a display screen,
From the web server unit provided in the data relay server, a destination input screen for inputting a destination telephone number for specifying a destination terminal that is an external terminal of a destination is input, and the input destination input screen is input A browser to be displayed on the display screen;
An information storage unit for storing a destination telephone number input to the destination input screen displayed on the display screen by the browser;
When a call start button for inputting a call start instruction signal for instructing start of a call is displayed on the display screen, and the call start instruction signal is input from the call start button displayed on the display screen, the information The destination telephone number stored in the storage unit is read by a processing device, and a call request signal for requesting a call with the destination terminal specified by the read destination telephone number is sent to the data relay server. A mobile terminal device comprising: a terminal-side call control unit that outputs to a call control server unit. The browser
From the web server unit provided in the data relay server, a screen on which a phone book is displayed is input as the destination input screen, the input destination input screen is displayed on the display screen, and the displayed phone book 2. The portable terminal device according to claim 1, wherein the destination telephone number is input by selecting a destination telephone number from the telephone number. The browser
From the web server unit provided in the data relay server, a screen on which a call history is displayed is input as the destination input screen, the input destination input screen is displayed on the display screen, and the displayed call history 2. The portable terminal device according to claim 1, wherein the destination telephone number is input by selecting a destination telephone number from the telephone number. The browser
Using the HTTP (HyperText / Transfer / Protocol) protocol, the destination input screen is input from the web server unit, the input destination input screen is displayed on the display screen,
The terminal-side call control unit
The portable terminal device according to any one of claims 1 to 3, wherein the call request signal conforming to a SIP (Session Initiation Protocol) protocol is output to the call control server unit. A data relay server connected to an external line terminal, which performs a call with the external line terminal via a data relay server including a call control server unit that executes call control and a web server unit that executes a web server function In a program to be executed by a portable terminal device that is a computer that performs
The browser inputs the destination input screen by inputting a destination input screen for inputting a destination telephone number for specifying a destination terminal which is a destination external line terminal from the web server unit provided in the data relay server, Browser display processing for displaying a screen on a display screen included in the mobile terminal device;
A telephone number storage process in which an information storage unit stores a destination telephone number input to the destination input screen displayed on the display screen by the browser display process;
The terminal-side call control unit displays a call start button for inputting a call start instruction signal for instructing the start of a call on the display screen, and the call start instruction signal is input from the call start button displayed on the display screen A call request requesting a call with the callee terminal identified by the read callee telephone number, when the callee phone number stored by the phone number storage process is read out by a processing device. A program for causing a portable terminal device, which is the computer, to execute terminal-side call control processing for outputting a signal to the call control server unit of the data relay server. In a data relay server connected to an external terminal, a mobile terminal device having a browser and a display screen, and relaying a call between the external terminal and the mobile terminal device,
A database that stores information about calls;
When a call between the portable terminal device and the external terminal is started, a dial plan control unit that stores information about the started call in the database;
A search result screen for executing a web server function, searching for information related to a call stored in the database based on a request from the browser of the mobile terminal device, and displaying the search result A data relay server, comprising: a web server unit that transmits to the mobile terminal device and causes the browser to display the transmitted search result screen on the display screen of the mobile terminal device. The dial plan control unit
When a call between the mobile terminal device and the external terminal is started, a log of the started call is stored in the database as information related to the call,
The web server unit
Based on a request from the browser of the mobile terminal device, a call log stored in the database is searched, a search result screen displaying the search result is transmitted to the mobile terminal device, and the transmitted search result The data relay server according to claim 6, wherein a screen is displayed on the display screen of the mobile terminal device by the browser. The database stores a phone book,
The dial plan control unit
When a call between the mobile terminal device and the external line terminal is started, based on a call destination telephone number of the started call, the phone book stored in the database is updated,
The web server unit
8. The data relay according to claim 6 or 7, wherein the telephone directory stored in the database is displayed on the display screen of the mobile terminal device based on a request from the browser of the mobile terminal device. server. The data relay server further includes:
Using a SIP (Session Initiation Protocol) protocol, a call control server unit that executes call control for starting a call between the mobile terminal device and the external terminal,
The web server unit uses the HTTP (HyperText / Transfer / Protocol) protocol to display the search result screen on the display screen of the mobile terminal device based on a request from the browser of the mobile terminal device. The data relay server according to any one of claims 6 to 8. In a program comprising a database, connected to a mobile terminal device having a browser and a display screen, and an external line terminal, and executed by a data relay server, which is a computer that relays a call between the external line terminal and the mobile terminal device,
When the dial plan control unit starts a call between the mobile terminal device and the external terminal, a call information storage process for storing information about the started call in the database;
A web server unit that executes a web server function retrieves information related to a call stored in the database by the call information storage process based on a request from the browser of the mobile terminal device, and displays the retrieved result Transmitting a search result screen to the mobile terminal device, and causing the data relay server, which is the computer, to execute web server processing for displaying the transmitted search result screen on the display screen of the mobile terminal device by the browser. A featured program. A data relay server connected to an external terminal, and a mobile terminal device connected to the data relay server and having a display screen, wherein the external terminal and the mobile terminal device are the data relay server In a telephone system that performs a call via
The data relay server is
A call control server for executing call control;
A web server unit that executes a web server function,
The portable terminal device
A browser for inputting a destination input screen for inputting a destination telephone number for specifying a destination terminal which is an external terminal of the destination from the web server unit, and displaying the input destination input screen on the display screen; ,
An information storage unit for storing a destination telephone number input to the destination input screen displayed on the display screen by the browser;
When a call start instruction button for inputting a call start instruction signal for instructing the start of a call is displayed on the display screen, and the call start instruction signal is input by the call start instruction button displayed on the display screen, The call control server receives a call request signal for requesting a call with the call destination terminal specified by the read call destination telephone number, by reading out the call destination telephone number stored in the information storage unit by a processing device. A terminal-side call control unit that outputs to the unit,
The call control server unit
The call request signal output by the terminal-side call control unit is input, call control with the mobile terminal device is executed based on the input call request signal, and a call with the external terminal Execute control,
The data relay server further includes:
A database that stores information about calls;
When a call is established between the mobile terminal device and the external line terminal and a call between the mobile terminal device and the external line terminal is started, a dial plan for storing information on the started call in the database A control unit,
The web server unit
Based on a request from the browser, information related to a call stored in the database is searched, a search result screen displaying the search result is transmitted to the mobile terminal device, and the transmitted search result screen is displayed by the browser. A telephone system for displaying on the display screen of the portable terminal device.

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