JP2009187323A - Service providing system, service providing method, and service providing program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve the control and uniform management of the connection destination of a terminal in achieving service provision based on its temporary communication relation(communication relation changing to ad hoc). <P>SOLUTION: When accepting a service start request from a terminal, a session management server controls the connection destination of the terminal by transmitting control information to the terminal. Under the control of the control information, the terminal connects to a service providing device, and transmits a use request. When accepting the use request from the terminal, the service providing device acquires the first communication information, and stores the second communication information in a storage part in association with the first communication information. When it is shown that each of prescribed first communication information among a plurality of first communication information stored in the storage part is established as the same first communication information, the service providing device controls services to be provided by using each of the second communication information stored in the storage part to be associated with the first communication information in association with each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a service providing system, a service providing method, and a service providing program.

  Conventionally, as a service provided to a terminal connected to a network controlled by IP (Internet Protocol), there is a so-called Web service. Here, the Web service generally refers to a service that realizes application functions via a network by applying WWW (World Wide Web) related technology. For example, a terminal connected to the Internet receives IM (Instant Messaging) service, which is one of Web services, and realizes chat and image data sharing with other terminals connected to the Internet.

  When the IM service is simply illustrated with reference to FIG. 31, each terminal first installs a dedicated application corresponding to the IM service in the terminal when receiving the provision of the IM service. Further, the service providing server registers the member ID of the member who uses each of the terminals in the member list. Furthermore, each terminal exchanges a member ID with a terminal used by another member who wants to realize chat and sharing of image data, and registers it in a buddy list (friend list) of the dedicated application. For example, when the terminal used by member A registers member B in the buddy list, a confirmation as to whether or not to permit the registration is transmitted from the service providing server to the terminal used by member B. The terminal that permits the registration and registers member A in the buddy list. Then, based on the buddy relationship between the member A and the member B, the service providing server provides a service so as to realize chat and image data sharing between the terminal used by the member A and the terminal used by the member B. Control.

  Further, for example, Patent Document 1 discloses a technique that eliminates the need for member registration when using a new service by unifying member (community) management. Further, for example, Patent Document 2 discloses a technique for sharing an application using a general browser.

JP 2005-228122 A JP 2003-044429 A

  By the way, in the conventional technology described above, as described below, when the relationship with the communication partner is temporary (in the case of a relationship that changes to ad hoc), a service is provided based on such a temporary communication relationship. There was a problem that it could not be controlled.

  That is, first, the following three points can be cited as problems of the conventional IM service. The first point is related to a dedicated application. In a general IM service, a mechanism for using a service between different applications is not considered. Therefore, in order to receive a service between users, the same type of dedicated application must be installed on both sides. The second point is related to buddy list management. As mentioned above, buddy list registration is required to receive IM services, but buddy lists are managed for each application, so buddy list registration is required again when using other applications. This is troublesome for the user. The third point is a temporary relationship issue. For example, even if you want to receive a service when the relationship between users is temporary (such as a relationship that changes to ad hoc), such as when you want to share a file with other users temporarily, the service is only available via a buddy list. The conventional IM service that cannot receive the service cannot respond.

  In this regard, even with the technique disclosed in Patent Document 1, at least the first and third problems are still not solved. Further, even the technique disclosed in Patent Document 2 still does not solve the problems of the second and third points. After all, at least the third problem cannot be solved by any of the conventional techniques described above.

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and when the relationship with the communication partner is temporary (in the case of a relationship that changes to ad hoc), such a temporary change is made. It is an object of the present invention to provide a service providing system, a service providing method, and a service providing program capable of controlling services based on various communication relationships.

  In order to solve the above-described problems and achieve the object, the invention according to claim 1 is a service provision in which a service providing apparatus that provides a service on the network to a plurality of terminals connected to the network controls the service. When the system receives a start request for requesting to start the service from the terminal, the terminal transmits control information for controlling the terminal so as to connect to a predetermined connection destination. A connection destination control means for controlling the connection destination of the terminal, and the terminal is connected to a service providing apparatus which is a predetermined connection destination by being controlled by the control information transmitted by the connection destination control means, and provides the service Use request transmitting means for transmitting a use request for requesting to use a service provided by the device to the service providing device; When the providing device receives the usage request from the terminal, the providing device acquires first communication information indicating that another terminal used in combination with the terminal has established the first communication. And second communication information for uniquely identifying second communication performed when the terminal uses the service between the terminal and the service providing apparatus. Second communication information storage means for storing in the second communication information storage means in association with the communication information, and predetermined first communication information among the plurality of first communication information stored in the second communication information storage means When indicating that each is established as the same first communication, the second communication information stored in the second communication information storage means is used in association with the first communication information. Services provided by each other And a service provision control means for controlling association, characterized by comprising a.

  Further, in the invention according to claim 2, in the above invention, the service providing system may include first terminal information indicating a terminal used in combination with the terminal that has established the first communication, and / or Depending on the second terminal information indicating the other terminal used in combination with the other terminal that has established the first communication, the terminal indicated by the first terminal information and / or the second terminal information Further comprising available service storage means for storing services that can be used by the terminal shown, wherein the connection destination control means accepts the start request together with the first terminal information and / or the second terminal information; The first terminal is configured to determine a predetermined connection destination from the available service storage unit based on the first terminal information and / or the second terminal information and connect to the predetermined connection destination. And controlling the connection of the terminal indicated by the terminal and / or the second terminal information indicated by the information.

  Further, in the invention according to claim 3, in the above invention, when the connection destination control means accepts the start request together with the first terminal information and / or the second terminal information, A first terminal address indicating an address of the terminal on the network and / or a second terminal address indicating an address of the second terminal on the network is acquired, and the first terminal address is used to obtain the first terminal address. It is verified whether or not the terminal information is correct information and / or whether or not the second terminal information is correct information using the second terminal address. The connection destination is controlled based on the first terminal information and / or the second terminal information, which is assumed to be.

  According to a fourth aspect of the present invention, in the above invention, the available service storage means is indicated by the first terminal information in addition to the first terminal information and / or the second terminal information. Whether the terminal indicated by the second terminal information and / or the terminal indicated by the second terminal information is the originating terminal that originated the first communication or the terminating terminal that received the first communication The available service is stored in accordance with the arrival / departure flag for identifying, and the connection destination control means sends the start request in addition to the first terminal information and / or the second terminal information. When the flag is also received, a predetermined connection destination is determined based on the arrival / departure flag in addition to the first terminal information and / or the second terminal information, and the connection destination is controlled. .

  Further, the invention according to claim 5 is the call center according to the above invention, wherein the available service storage means is configured such that each of the available services should start a service by connecting the terminal to the service providing apparatus at the same time as an incoming call. Depending on the incoming simultaneous connection flag that identifies whether it is a type service or a portal type service that should output a service selection screen to the output unit of the terminal prior to the start of the service, the available service is The connection destination control means determines a predetermined connection destination based on the incoming call simultaneous connection flag in addition to the first terminal information and / or the second terminal information, and controls the connection destination. It is characterized by doing.

  Further, the invention according to claim 6 is the above invention, wherein the available service storage means includes connection destination information to which each of the available services should connect the originating terminal that has transmitted the first communication. The connection destination information to be connected to the destination terminal that has received the first communication is provided as the same information, or is provided as different information, or the terminal provides a service. The available service is stored according to a connection type for identifying whether the information is provided by different information depending on whether the subscriber is a non-subscriber or a non-subscriber. A predetermined connection destination is determined based on the connection type in addition to the terminal information of 1 and / or the second terminal information, and the connection destination is controlled.

  Further, in the invention according to claim 7, in the above invention, when the connection destination control unit receives the start request together with first communication identification information that uniquely identifies the first communication, The first communication information is issued as a pseudonym of one communication identification information, and the connection destination of the terminal is controlled by transmitting the first communication information together with the control information to the terminal.

  The invention according to claim 8 is the above invention, wherein the service providing system further includes an allowable connection destination storage unit that stores an allowable connection destination to which the connection of the terminal is allowed, and the terminal includes the terminal Is further provided with connection destination information transmitting means for acquiring connection destination information that is currently connected, and transmitting the connection destination information to the connection destination control means, wherein the connection destination control means is transmitted by the connection destination information transmission means. It is determined whether or not the connection destination information obtained corresponds to the allowable connection destination stored by the allowable connection destination storage means, and if not, it is determined that the connection destination is not allowed. By transmitting warning information for warning to the terminal, the connection destination of the terminal is further controlled.

  The invention according to claim 9 is the above invention, wherein the service providing system stores connection destination information to which the terminal is currently connected and / or service information indicating a service currently used by the terminal. Use service storage means, and contention information storage means for storing contention information indicating a competition relationship of each service provided by the service providing apparatus, wherein the connection destination control means is a service currently used. When a change request for requesting use of a different service is received from the terminal, a service currently used by the terminal is determined based on connection destination information and / or service information stored in the use service storage unit. Whether the service and the service specified in the change request are in a competitive relationship. Determining based on the contention information stored by the means, further controlling the connection destination of the terminal based on the determination, wherein the terminal includes a change request transmitting means for transmitting the change request to the connection destination control means. It is further provided with a feature.

  In the invention according to claim 10, in the above invention, the connection destination control unit changes the screen information output to the output unit of the other terminal controlled in association with each other by the service providing apparatus. When the change request for requesting is received from the terminal together with the change connection destination information indicating the connection destination to which the other terminal is to be connected when changing, the connection is made to the predetermined connection destination indicated by the change connection destination information. The control information to be controlled is transmitted to the other terminal to further control the connection destination of the other terminal, and the terminal sends the change request to the connection destination control means together with the connection destination information for change. The service providing apparatus further includes a change request transmitting means for transmitting, and when the change request is received from one terminal, the service connection device receives the change connection destination information. And further comprising a change connection destination information transmitting means for transmitting to the terminal, wherein the service providing control means is connected to the connection destination indicated by the change connection destination information from the other terminal and outputs the other terminal. Further control is made to change the screen information output to the unit.

  According to an eleventh aspect of the present invention, in the above invention, the connection destination control means controls the first communication with disconnection information indicating that the first communication is disconnected. Is received, the control information for changing the connection destination is used in combination with the terminal that has established the first communication so as to end the use of the service provided by the service providing apparatus that is the currently connected connection destination. By transmitting to the terminal, the connection destination of the terminal is further controlled.

  The invention according to claim 12 is a service providing method in which a service providing apparatus that provides a service on the network to a plurality of terminals connected to the network controls the service, and starts the service. When a start request for requesting is received from the terminal, a connection destination control step for controlling the connection destination of the terminal is transmitted by transmitting control information for controlling the terminal so as to connect to a predetermined connection destination. The terminal is connected to a service providing apparatus that is a predetermined connection destination by being controlled by the control information transmitted in the connection destination control step, and requests to use a service provided by the service providing apparatus A usage request transmission step of transmitting a usage request to the service providing apparatus, wherein the service providing apparatus sends the usage request to the terminal. A first communication information acquisition step of acquiring first communication information indicating that the other terminal used in combination with the terminal establishes the first communication, when the terminal is received; Second communication information for uniquely identifying the second communication performed when using the service between the first communication information and the second communication information stored in the first communication information acquisition step. Each of the predetermined first communication information is established as the same first communication among a plurality of first communication information stored in the second communication information storage unit and the second communication information storage unit. The services provided by using the second communication information stored in the second communication information storage unit in association with the first communication information in association with each other. A service provision control process, Characterized in that it contains it.

  The invention according to claim 13 is a service providing program for causing a computer to execute a service providing method for controlling a service by a service providing apparatus that provides a service on the network to a plurality of terminals connected to the network. Then, when a start request for starting the service is received from the terminal, the connection destination of the terminal is transmitted by transmitting control information for controlling the terminal so as to connect to a predetermined connection destination. And a connection destination control procedure for controlling the connection is executed by a computer, and the control information transmitted by the connection destination control procedure is connected to a service providing device that is a predetermined connection destination, and the service providing device provides A usage request transmission procedure for transmitting a usage request for using a service to the service providing apparatus. When the request for use is received from the terminal, the first communication information indicating that the other terminal used in combination with the terminal has established the first communication is acquired. The first communication information acquisition procedure and the second communication information for uniquely identifying the second communication performed when the terminal uses the service with the service providing apparatus are obtained by the first communication information acquisition procedure. A second communication information storage procedure for storing in the second communication information storage unit in association with the acquired first communication information, and a predetermined one of the plurality of first communication information stored in the second communication information storage unit Second communication information stored in the second communication information storage unit in association with each of the first communication information when each of the first communication information indicates that the first communication information is established as the same first communication. Provided using each communication information The that service, characterized in that to execute a service provision control step of controlling in association with each other, to the computer as the service providing device.

  The invention according to claim 14 is a service providing system in which a service providing apparatus that provides a service on the network to a plurality of terminals connected to the network controls the service, and starts the service. When a start request for requesting is received from the terminal, a connection destination control means for controlling the connection destination of the terminal is transmitted by transmitting control information for controlling the terminal so as to connect to a predetermined connection destination. The terminal is connected to a service providing apparatus which is a predetermined connection destination by being controlled by the control information transmitted by the connection destination control means, and requests to use a service provided by the service providing apparatus Use request transmitting means for transmitting a use request to the service providing apparatus, and the service providing apparatus sends the use request to the terminal. When receiving from the first communication information acquisition means for acquiring first communication information indicating that the terminal has established the first communication, and the terminal uses the service between the service providing device Second communication information for uniquely storing second communication information for identifying second communication to be performed in association with the first communication information acquired by the first communication information acquisition means in the second communication information storage means A case where the storage means and a plurality of first communication information stored in the second communication information storage means indicate that each predetermined first communication information is established as the same first communication. And service provision control means for controlling the services provided by using the second communication information stored in the second communication information storage means in association with the first communication information in association with each other. To have prepared And butterflies.

  According to the inventions of claims 1, 12 to 14, when providing a service based on a temporary communication relationship, it is possible to centrally manage by controlling the connection destination of the terminal.

  According to the invention of claim 2, it is possible to control the connection destination of the terminal based on the terminal information.

  Further, according to the invention of claim 3, since the connection destination of the terminal is controlled based on the terminal information verified as correct information, it is possible to control the connection destination of the terminal while improving security. Become.

  According to the invention of claim 4, it is also possible to control the connection destination of a terminal based on the identification of whether it is a calling terminal or a called terminal.

  According to the invention of claim 5, it is possible to control the connection destination of the terminal based on the identification of whether the service is a call center type or a portal type.

  Further, according to the invention of claim 6, whether the service is provided with the same connection destination information to the calling terminal and the called terminal or with different connection destination information, It is also possible to control the connection destination of the terminal based on the identification of whether it is provided with different connection destination information depending on whether it is a subscriber or a non-subscriber.

  According to the invention of claim 7, since the first communication information as a pseudonym is issued and the terminal connection destination is controlled and centrally managed, it is based on a temporary communication relationship while improving security. Service provision can also be realized.

  According to the invention of claim 8, the user of the terminal does not need to be aware of the connection destination.

  According to the invention of claim 9, it is possible to switch the service of the other terminal in response to a request from the user of one terminal. Also, when switching services, it is possible to switch in consideration of service competition.

  Further, according to the invention of claim 10, one terminal can change the screen of the other terminal.

  According to the eleventh aspect of the invention, the first communication and the second communication can be linked.

  Exemplary embodiments of a service providing system, a service providing method, and a service providing program according to the present invention will be described below in detail with reference to the accompanying drawings. In the following, the main terms used in the embodiment, the outline and features of the service providing system according to the first embodiment, the configuration of the service providing system according to the first embodiment, the processing procedure by the service providing system according to the first embodiment, The effects of the first embodiment will be described in order, and then other embodiments will be described.

[Explanation of terms]
First, main terms used in the following examples will be described. A “service” is a so-called Web service (a service that realizes an application function via a network by applying a WWW-related technology). In a network controlled by IP such as the Internet, a “service providing server” controls a service, and a “terminal” connected to the network is provided with a “service”.

  By the way, the “service providing server” controls services based on the relationship between each terminal, the relationship between the terminal and the service providing server, or the relationship between users who use the terminal. For example, in the IM service, it is assumed that a user who uses the terminal A and a user who uses the terminal B realize file sharing in the IM service. It is assumed that terminal A has uploaded a file to “service providing server” while terminal B is accessing “service providing server”. In such a case, the “service providing server” transmits a file to the terminal B based on the relationship between the user of the terminal A and the user of the terminal B. That is, the “service providing server” accepts an input of a user ID and a password from a user of the terminal A, and accepts an input of a user ID and a password from a user of the terminal B, for example. And the user of terminal B are identified. Then, if the relationship between the identified user of the terminal A and the user of the terminal B recognizes that file sharing is mutually permitted, the “service providing server” sends a file to the terminal B based on the relationship. Control the service to send.

  In addition, for example, in SNS (Social Networking Service), it is assumed that the user of the terminal A who is the site operator causes the user of the terminal B to browse the site. In such a case, the “service providing server” controls browsing of the site by the user of the terminal B based on the relationship between the user of the terminal A and the user of the terminal B. That is, the “service providing server” has a relationship between the user of the specified terminal A and the user of the specified terminal B, and the relationship that the user of the terminal A is permitted to browse the site by the user of the terminal A If so, the service is controlled so as to permit browsing of the site by the user of the terminal B based on the relationship.

  Also, for example, a case where a “service providing server” that provides music information permits the user of the terminal A to download music information is assumed. In such a case, the “service providing server” controls the download communication by the terminal A based on the relationship between the user of the terminal A and the “service providing server”. In other words, the “service providing server” indicates that the relationship between the identified user of the terminal A and the “service providing server” is such that download communication by the user of the terminal A is permitted by the “service providing server”. Based on the relationship, the service provision is controlled so as to permit the download communication by the terminal A.

  As described above, the relationship between each terminal, the relationship between the terminal and the service providing server, or the relationship between users using the terminal has various modes depending on the service content. The “server” still controls services based on these relationships.

  However, the conventional Web service has been provided on the assumption that such a relationship is registered in advance. For example, a conventional “service providing server” registers a relationship between users in a buddy list in advance, and controls services such as chat and image data sharing based on the registered buddy list. On the other hand, the “service providing server” in the present invention is not only a relationship such as a pre-registered buddy list, but also when the relationship with a communication partner is temporary (a relationship that changes to ad hoc). Based on such temporary communication relationship, services such as chat and image data sharing are controlled.

[Outline and Features of Service Providing System According to Embodiment 1]
The service providing system according to the first embodiment is summarized in that a service providing server that provides a service on the network to a plurality of information display terminals connected to the network controls the service, and has a temporary communication relationship. The main feature is that when the service provision based on the terminal is realized, the connection destination of the terminal is controlled and integratedly managed.

  This main feature will be described with reference to FIG. FIG. 1 is a diagram for explaining the outline and features of the service providing system according to the first embodiment. The service providing system illustrated in FIG. 1 establishes communication by SIP in a configuration in which the terminal side configuration is divided into a SIP (Session Initiation Protocol) phone and an information display terminal used in combination with the SIP phone. Even when the relationship with the communication partner is temporary, such as the communication partner, the service providing server provides a service based on such a temporary communication relationship to the information display terminal. Here, the SIP phone is a terminal that establishes communication by SIP (note that communication using the established session is also performed), and the information display terminal is a terminal that performs HTTP (HyperText Transfer Protocol) communication. That is.

  In the service providing system, an HGW is installed in the terminal-side network. In FIG. 1, the connection relationship between the HGW, the SIP phone, and the information display terminal is not clearly shown. However, the SIP phone and the information display terminal are connected under the HGW, and the HGW is based on the SIP phone. It is a device that controls both SIP communication and HTTP communication by an information display terminal. That is, both SIP communication using a SIP phone and HTTP communication using an information display terminal are connected to a network via an HGW. In the following, the process of establishing a session by SIP is appropriately expressed as “SIP communication” (that is, “SIP communication” is communication of the session itself established by SIP (for example, a voice path between end users, VPN (Virtual Private Network) etc.).

  On the other hand, in the service providing system, a SIP proxy, a session management server, and a service providing server are installed on the network side. The SIP proxy is a device that controls the process of establishing a session by SIP and the communication of the session itself established by SIP. The session management server is a device that controls the connection destination of the information display terminal, as will be described later. The service providing server is a device that provides a service to the information display terminal.

  As shown in FIG. 1, in the service providing system according to the first embodiment, communication is established between SIP phones and SIP phones by SIP (see (1) in FIG. 1).

  Subsequently, the information display terminal used in combination with the SIP phone that has established communication transmits a start request for requesting to start the service to the session management server (see (2) in FIG. 1).

  Then, the session management server generates a control page for controlling the information display terminal so as to control the information display terminal that has transmitted the start request to a predetermined connection destination (see (3) in FIG. 1).

  Then, the session management server controls the connection destination of the information display terminal by transmitting the generated control page to the information display terminal. In other words, the information display terminal is controlled by the control page transmitted from the session management server, and requests to use the service provided by the service providing server by connecting to the service providing server that is a predetermined connection destination. The use request to be transmitted is transmitted to the service providing server (see (4) in FIG. 1).

  At this time, the service providing server acquires a connection / departure linking ID indicating that a SIP phone used in combination with the information display terminal has established a session by SIP. In addition, the service providing server stores the Web session information necessary for the information display terminal to use the service in the storage unit in association with the acquired arrival / departure association ID.

  When the service providing server indicates that each of the predetermined IDs between the arrival and departure times transmitted from the plurality of information display terminals is established as the same session. The services provided by using the Web session information stored in the storage unit in association with the departure / arrival linking IDs are associated with each other and controlled.

  As described above, in the service providing system according to the first embodiment, the information display terminal accesses the service providing server by being controlled by the session management server. Therefore, when realizing service provision based on a temporary communication relationship. In addition, it is possible to manage the connection destination of the information display terminal by centralized management.

[Configuration of Service Providing System According to Embodiment 1]
Next, the configuration of the service providing system according to the first embodiment will be described with reference to FIGS. 2 is a block diagram showing the configuration of the session management server, FIG. 3 is a diagram for explaining the user contract service management table, and FIG. 4 is a diagram for explaining the contract service information table. 5 is a diagram for explaining the contention service management table, FIG. 6 is a diagram for explaining the control session management table, and FIG. 7 is a diagram for explaining the in-access service management table. FIG. 8 is a diagram for explaining the link ID table between arrivals and departures, FIG. 9 is a diagram for explaining the access permission URL table, and FIG. 10 shows the configuration of the SIP proxy. 11 is a block diagram showing the configuration of the service providing server, FIG. 12 is a diagram for explaining the Web session information management table, and FIG. Is a diagram for explaining the structure of a terminal side, Figure 14 is a diagram for explaining a browser session information management table.

[Session Management Server]
The session management server 100 is realized by providing each unit described below in a general-purpose server or the like. Particularly, as closely related to the present invention, as shown in FIG. Unit 120 and control unit 130.

  The communication unit 110 includes a general interface and library for HTTP communication, and transmits / receives information to / from the information display terminal 550 or transmits / receives information to / from the HGW 400 or the service providing server 300.

  The storage unit 120 stores information used for various controls in the control unit 130, and particularly as closely related to the present invention, as shown in FIG. 2, a user contract service management table 121, a contract service information table, 122, a competing service management table 123, a control session management table 124, an in-access service management table 125, an arrival / departure association ID table 126, and an access permission URL table 127.

  The user contract service management table 121 is a table for managing services contracted by a user (user) who uses the information display terminal 550 (and the SIP phone 500). For example, as shown in FIG. 3, the user contract service management table 121 stores user identification information and a contract service ID in association with each other. These pieces of information stored in the user contract service management table 121 are registered in advance in the service providing system according to the first embodiment, and are appropriately registered.

  Here, the user specifying information is information for specifying the user (user) of the information display terminal 550. In the first embodiment, a SIP-URI (Uniform Resource Identifier) is used. The contract service ID is an ID for identifying a service. As described above, the user contract service management table 121 stores the user identification information and the contract service ID in association with each other so that the user identified by the user identification information can be subscribed to the service identified by the contract service ID. I manage to be a person. Note that how the user contract service management table 121 is used in the service providing system will be described in detail when explaining the processing procedure.

  The contract service information table 122 is a table for managing various information for each contract service. For example, as shown in FIG. 4, the contract service information table 122 stores a contract service ID, a service type, an incoming call simultaneous connection flag, a connection type, an access destination URL, a destination URL, and a priority in association with each other. These pieces of information stored in the contract service information table 122 are registered in advance and appropriately registered in the service providing system according to the first embodiment.

  Here, the service type is a service that can be used if either the originating user or the terminating user is subscribed to the service identified by the contract service ID, or both the originating user and the terminating user. This is a service that cannot be used unless the subscriber is subscribed, or is a service that can be used if either the originating user or the terminating user is subscribed but can only be activated by the subscriber. The incoming simultaneous connection flag means that the service identified by the contract service ID is a service of a call center type (a type that starts a service simultaneously with an incoming call) or a portal type (a type that displays a service selection screen when an incoming call is received). Is a flag indicating whether the service is The connection type is a service that presents the same URL as the connection destination to the calling user and the called user, or a service that presents different URLs, or URLs that differ between subscribers and non-subscribers. It is shown whether it is a service which presents. In other words, it is information for enabling connection to different URLs on the calling side and the called side. The priority indicates the priority of the service identified by the contract service ID. As described above, the contract service information table 122 manages various information related to the service identified by the contract service ID by storing various information in association with the contract service ID. Note that how the contract service information table 122 is used in the service providing system will be described in detail when the processing procedure is described.

  The competitive service management table 123 is a table for managing the competitive relationship of each service. For example, as shown in FIG. 5, the competitive service management table 123 stores services in a competitive relationship as one group. These pieces of information stored in the competitive service management table 123 are registered in advance and appropriately registered in the service providing system according to the first embodiment. Here, for example, “1114, *” indicates that the service identified by “1114” is exclusive to all services. It should be noted that how the competitive service management table 123 is used in the service providing system will be described in detail when the processing procedure is described.

  The control session management table 124 manages control session information (information given to the Web browser of the information display terminal 550 in order for the session management server 100 to communicate with the information display terminal 550). It is a table. For example, as shown in FIG. 6, the control session management table 124 includes control session information, Call-ID, From, To, a departure / arrival determination flag, a start time, an end time, and an HGW URL. And the IP address are stored in association with each other. Among these pieces of information stored in the control session management table 124, the control session information is paid out when the session management server 100 receives a service start request from the information display terminal 550. The Call-ID, From, To, arrival / departure determination flag, and HGW URL are obtained and registered from the information display terminal 550 when a service start request is received from the information display terminal 550. is there. The start time is obtained by registering the time when the service start request is accepted (the start time may be acquired from the information display terminal 550). The end time can be registered when the session management server 100 grasps the disconnection time of the session. The IP address is acquired by collecting the IP address of the information display terminal 550. The IP address can be used for authentication of the information display terminal 550.

  As described above, the control session management table 124 is a session established by the SIP phone 500 (SIP phone used in combination with the information display terminal 550) in association with the control session information issued by the session management server 100. The information regarding the control session information has been paid out to the information display terminal 550, and the like. Note that how the control session management table 124 is used in the service providing system will be described in detail when explaining the processing procedure.

  The in-access service management table 125 is a table for managing services (services being accessed) that the information display terminal 550 is currently using. For example, as shown in FIG. 7, the in-access service management table 125 stores control session information, an in-access service ID, and a status in association with each other. These pieces of information stored in the in-access service management table 125 are registered when the information display terminal 550 uses the service by the session management server 100 controlling the connection destination.

  Here, the status indicates the status of the service identified by the service ID. For example, “1” indicates that the information display terminal 550 is preparing to use the service by transmitting a service start request to the session management server 100. Further, “2” indicates that the other party's information display terminal 550 has made a service use preparation by making a service start request. “3” indicates that the information display terminal 550 is using the service. “4” indicates that the information display terminal 550 is in the process of interrupting the service. Note that how the in-access service management table 125 is used in the service providing system will be described in detail when the processing procedure is described.

  The arrival / departure association ID table 126 is a table for managing the inter-departure association ID (a pseudonym information issued by the session management server 100 as a pseudonym of call session information that uniquely identifies a session established by SIP). For example, as shown in FIG. 8, the departure / arrival association ID table 126 stores control session information, a service ID, and an arrival / departure association ID in association with each other. These pieces of information stored in the between-incoming / outgoing association ID table 126 are registered when the session management server 100 pays out the inbound / outbound association ID. Note that how the arrival / departure association ID table 126 is used in the service providing system will be described in detail when the processing procedure is described.

  The access permission URL table 127 is a table that manages connection destinations (URL (Uniform Resource Locator)) that are allowed as connection destinations of the information display terminal 550. For example, the access permission URL table 127 stores a list of URLs as shown in FIG. As described above, the access-permitted URL table 127 manages a white list of URLs that are permitted as a connection destination of the information display terminal 550 by storing a list of URLs (a black list may be managed). Note that how the access-permitted URL table 127 is used in the service providing system will be described in detail when explaining the processing procedure.

  The control unit 130 performs various controls in the session management server 100, and particularly those closely related to the present invention include a control page generation unit 131, a connection destination monitoring unit 132, and a service start as shown in FIG. Unit 133, screen changing unit 134, connection destination warning unit 135, and forced disconnection unit 136.

  The control page generation unit 131 generates a control page that controls the connection destination of the information display terminal 550. Specifically, when receiving a service start request (service start request for requesting to start a service) from the information display terminal 550, the control page generating unit 131 controls the information to control to a predetermined connection destination. A control page for controlling the display terminal 550 is generated, and the control page is transmitted to the information display terminal 550. It should be noted that how the control page generation unit 131 is used in the service providing system will be described in detail when the processing procedure is described.

  The connection destination monitoring unit 132 monitors the connection destination of the information display terminal 550. Specifically, the connection destination monitoring unit 132 establishes communication with the connection destination monitoring function unit 558 installed in the information display terminal 550, and periodically receives a connection destination from the connection destination monitoring function unit 558. By receiving the URL, the connection destination of the information display terminal 550 is monitored. Note that how the connection destination monitoring unit 132 is used in the service providing system will be described in detail when explaining the processing procedure.

  The service start unit 133 controls the connection destination of the information display terminal 550 when the information display terminal 550 uses (or changes) the service provided by the service providing server 300. Specifically, when the service start unit 133 receives from the information display terminal 550 a request to use a service or a change request to request to use a service different from the service currently used, the information display terminal The service currently used by 550 is determined, and after determining the competitive relationship and the like, the connection destination of the information display terminal 550 is controlled. Note that how the service start unit 133 is used in the service providing system will be described in detail when the processing procedure is described.

  The screen changing unit 134 performs control to change the screen information of the arrival / departure information display terminal 550. Specifically, the screen change unit 134 requests a change request (changes the screen information output to the output unit 552 of the other information display terminal 550 controlled in association with each other by the service providing server 300. When the change request is received from the information display terminal 550, the other information display terminal 550 is controlled to be connected to a predetermined connection destination. Note that how the screen changing unit 134 is used in the service providing system will be described in detail when the processing procedure is described.

  The connection destination warning unit 135 monitors the connection destination of the information display terminal 550 and notifies the user of the information display terminal 550 of the warning. Specifically, the connection destination warning unit 135 determines whether or not the connection destination URL periodically received from the connection destination monitoring function unit 558 installed in the information display terminal 550 is an allowed URL. If it is determined that the URL is not permitted, the warning information is transmitted to the information display terminal 550 to notify the warning. Note that how the connection warning unit 135 is used in the service providing system will be described in detail when the processing procedure is described.

  The forced disconnection unit 136 terminates use of the service provided by the service providing server 300 when the session established by the SIP phone 500 used in combination with the information display terminal 550 is disconnected. Control the connection destination. Specifically, when the disconnection information indicating that the communication established by SIP has been disconnected is received from the SIP proxy 200, the forced disconnection unit 136 provides the service providing server 300 that is the currently connected connection destination. By transmitting control information for changing the connection destination so as to end the use of the service to the information display terminal 550, the connection destination of the information display terminal 550 is controlled. Note that how the forced disconnection unit 136 is used in the service providing system will be described in detail when the processing procedure is described.

[SIP proxy]
The SIP proxy 200 is realized by providing each unit described below in a general-purpose server or the like, and particularly as closely related to the present invention, as shown in FIG. 10, a communication unit 210, a control unit, 230.

  The communication unit 210 includes a general interface and library for SIP communication, and transmits / receives information to / from the SIP phone 500 or transmits / receives information to / from the HGW 400 or the service providing server 300.

  The control unit 230 performs various controls in the SIP proxy 200. In particular, as shown in FIG. 10, the control unit 230 includes a SIP communication control unit 231 and a call session information transmission unit 232 as shown in FIG. .

  The SIP communication control unit 231 has the same function as the SIP communication control function provided in a general-purpose SIP proxy. Specifically, the SIP communication control unit 231 controls the process of establishing communication between SIP phones 500 by SIP, the communication established by SIP, or the process of disconnecting the communication established by SIP. To do.

  The call session information etc. transmitting unit 232 issues the call session information etc. in a verifiable format. In addition, the call session information transmission unit 232 according to the first embodiment issues “facts about call session information” in a verifiable format for the collected call session information and the like. Specifically, “facts about call session information and the like” are, for example, (a) that the call session information and the like are information issued from the SIP proxy 200, and (b) The fact is that the call session information or the like has not been falsified, and (c) the fact that the SIP proxy 200 has transmitted the call session information or the like is not denied. If such a fact can be verified in the session management server 100, the session management server 100 can confirm that the acquired call session information is reliable information (authentic information).

  Moreover, the call session information etc. transmission part 232 transmits call session information etc. to HGW400. Specifically, the call session information etc. transmission unit 232 sends the issued call session information (call session information attached with a signed certificate of the SIP proxy 200) to the HGW 400 in a push type. Here, various methods are conceivable as a method by which the call session information transmission unit 232 transmits the call session information. However, in the first embodiment, the call session information transmission unit 232 adds SAML to the “MESSAGE” of the SIP signal. By including the call session information and the like described in the format, the call session information and the like are transmitted to the HGW 400. The HGW 400 may access the SIP proxy 200 through HTTP communication and acquire call session information and the like in a pull type. In this case, however, it is desirable that the SIP proxy 200 authenticates the HGW 400 that desires to acquire call session information or the like by some kind of authentication means such as IP address-based or line-based authentication.

[Service providing server]
The service providing server 300 is realized by providing each unit described below in a general-purpose server or the like, and as particularly closely related to the present invention, as shown in FIG. Unit 320 and a control unit 330.

  The communication unit 310 includes a general interface and library for HTTP communication, and transmits / receives information to / from the session management server 100, the information communication terminal 550, and the SIP proxy 200. Specifically, the communication unit 310 performs communication in which an after-arrival / linkage ID receiving unit 331 described below receives a service start request from the information display terminal 550, or a service providing unit 333 described below provides a service to the information display terminal 550. To communicate. In the first embodiment, it is assumed that any of the above-described communications is performed using HTTP. However, in particular, “Web communication” means that communication by the service providing unit 333 is communication related to a Web service. Call.

  The storage unit 320 stores information used for various controls in the control unit 330. In particular, the storage unit 320 includes a Web session information management table 321 as shown in FIG. 11, which is closely related to the present invention.

  The web session information management table 321 stores the web session information in association with the arrival / departure association ID. Specifically, the web session information management table 321 first stores an arrival / departure association ID and an arrival / departure determination flag received by an arrival / departure association ID receiving unit 331, which will be described later. Web session information paid out by the payout unit 332 is stored in association with the arrival / departure association ID. The information stored in the Web session information management table 321 is used for processing by the service providing unit 333 described later.

  For example, as shown in FIG. 12, the Web session information management table 321 stores associations between Web session information, departure / arrival association IDs, and arrival / departure determination flags.

  Returning to FIG. 11, the control unit 330 performs various controls in the service providing server 300, and particularly as closely related to the present invention, as shown in FIG. 11, as shown in FIG. A session information payout unit 332 and a service providing unit 333 are provided.

  The arrival / departure association ID receiving unit 331 receives the arrival / departure association ID and the arrival / departure determination flag. Specifically, the arrival / departure association ID receiving unit 331 receives the arrival / departure association ID and the arrival / departure determination flag together with the service start request from the information display terminal 550, thereby acquiring the arrival / departure association ID and the arrival / departure determination flag. The acquired arrival / departure association ID and the arrival / departure determination flag are stored in the Web session information management table 321. In addition, although the arrival / departure association ID receiving unit 331 according to the first embodiment receives the arrival / departure determination flag together with the arrival / departure association ID, the present invention is not limited to this and receives the arrival / departure determination flag. Is optional.

  Here, in the first embodiment, the arrival / departure association ID and the arrival / departure determination flag transmitted from the information display terminal 550 are the arrival / departure association ID and the arrival / departure determination flag attached with the certificate with the signature of the session management server 100. is there. Accordingly, the arrival / departure association ID receiving unit 331 acquires the arrival / departure association ID and the arrival / departure determination flag attached with the certificate with the signature of the session management server 100, and the acquired arrival / departure association ID and the arrival / departure determination flag. Are stored in the Web session information management table 321.

  Specifically, the arrival / departure linking ID reception unit 331 verifies the signed certificate attached to the between-arrival / departure linking ID and the arrival / departure determination flag, so that the between-departure / arrival linking ID and the arrival / departure determination flag are authentic. The information is verified, and the verification result is transmitted to the Web session information payout unit 332.

  For example, the incoming / outgoing association ID receiving unit 331 decrypts the signature using the public key of the session management server 100 included in the certificate (provided by the certificate authority as a genuine public key), A hash value of the ID between the departure and arrival and the arrival / departure determination flag is extracted. Moreover, the between-arrival / incoming linking ID receiving unit 331 calculates a hash value from the between-coming / out linking ID and the arrival / departure determination flag itself. Then, the arrival / departure association ID receiving unit 331 verifies that the inter-departure / arrival association ID and the arrival / departure determination flag are authentic information by collating the hash value extracted from the signature with the calculated hash value. That is, as a result of collating the hash value extracted from the signature with the calculated hash value, if both match, (a) the link between departure and arrival and the arrival / departure determination flag are surely issued from the session management server 100 Denying the fact that the information is (b) the connection ID between the departure and arrival and the arrival / departure determination flag has not been tampered with, and (c) the fact that the session management server 100 has transmitted the connection ID between the arrival and departure and the arrival / departure determination flag. It is possible to verify facts such as not, and verify that the arrival / departure association ID and the arrival / departure determination flag are authentic information.

  Web session information payout unit 332 pays out Web session information. Specifically, the Web session information payout unit 332 receives the arrival / departure association ID and the arrival / departure determination flag by the arrival / departure association ID receiving unit 331, and the verification result is the arrival / departure association ID and the arrival / departure determination flag. Web communication performed by the information display terminal 550 that has transmitted the arrival / departure linking ID and the arrival / departure determination flag (provided that the information display terminal 550 provides the service to receive the service) Web session information is paid out as information to be given to (Web communication performed with the server 300). Further, the web session information payout unit 332 transmits the paid out web session information to the information display terminal 550.

  Also, the web session information payout unit 332 stores the paid out web session information in association with the departure / arrival association ID and the arrival / departure determination flag. Specifically, the Web session information payout unit 332 associates the paid-out Web session information with the between-arrival / recession association ID and the arrival / departure determination flag acquired by the arrival / departure association ID receiving unit 331. Stored in H.321.

  The service providing unit 333 controls the service. Specifically, the service providing unit 333 is one in which each of the predetermined arrival / departure association IDs is established as the same communication among a plurality of departure / arrival association IDs stored in the Web session information management table 321. Web session information in a case where it is indicated that there is a result, and as a result of verification with respect to each of the predetermined arrival / departure association IDs, it is indicated that each of the arrival / departure association IDs is authentic information The services provided by each are controlled in association with each other.

  That is, for example, when the other information display terminal 550 is accessing the service providing server 300 through Web communication to which the Web session information “Ss4444444” is assigned, the one information display terminal 550 receives the Web session information “Ss4444445”. ”Is uploaded to the service providing server 300 by Web communication. In such a case, since the relationship between the information display terminals 550 is regarded as a relationship in which the same communication is established by SIP, it is assumed that this relationship is a relationship in which image data sharing is mutually recognized. The service providing unit 333 in 1 controls the service so that the image data is transmitted to the other information display terminal 550. Note that the service providing unit 333 uses the departure / arrival determination flag stored in the Web session information management table 321 to control whether the information display terminal 550 is the originating side or the terminating side, and then controls the service. May be.

  Here, the service provision by the service provision server 300 is considered again. That is, the point that the service provision by the service provision server 300 is controlled based on the relationship between the information display terminals 550 is the same as that of the conventional service provision server. How to understand the “relationship between display terminals 550” will be described.

  That is, unlike the conventional service providing server, the service providing server 300 according to the first embodiment does not grasp the relationship registered in the storage unit in advance as the “relationship between the information display terminals 550”, but the service providing unit 333. However, when it shows that each connection ID between arrival and departure shows that the same communication was established by SIP, "the relationship between the information display terminals 550" is grasped | ascertained. In other words, the service providing server 300 has such a temporary communication relationship even when the relationship with the terminal that is the communication partner is temporary, such as the relationship between the SIP phones 500 that have established the same communication by SIP. Based on this, the web communication performed in each of the information display terminals 550 is associated with each other, so that a service associated with a temporary communication relationship can be provided.

  Note that, as in the first embodiment, when the first communication is communication in the process of establishing communication by SIP, the “relationship between the information display terminals 550” is also an authenticated relationship by SIP. There is a meaning. That is, in SIP communication, Digest (digest) authentication is generally performed, and the fact that communication is established between SIP phones 500 by SIP means that the relationship between each information display terminal 550 has been authenticated. It shows that there is.

[HGW]
The HGW 400 shown in FIG. 13 is realized by providing each unit described below in a general-purpose gateway device or the like, and as particularly closely related to the present invention, as shown in FIG. An HTTP communication unit 410, a storage unit 420, and a control unit 430 are provided.

  The SIP communication unit / HTTP communication unit 410 includes general interfaces and libraries for SIP and HTTP communication, and communication between the SIP phone 500 and the SIP proxy 200, between the information display terminal 550 and the service providing server 300. Communication between the HGW 400 and the session management server 100, communication between the HGW 400 and the SIP proxy 200, communication between the HGW 400 and the service providing server 300, and the like.

  The storage unit 420 stores information used for various controls in the control unit 430. In particular, the storage unit 420 includes a browser session information management table 421 as shown in FIG. 13, which is closely related to the present invention.

  The browser session information management table 421 stores in advance browser session information assigned to the subordinate information display terminal 550. Specifically, the browser session information management table 421 includes information for uniquely identifying the SIP phone 500 (SIP phone ID) and information for uniquely identifying the information display terminal 550 used in combination with the SIP phone 500 ( Information display terminal ID) and browser session information for specifying the information display terminal 550 are stored in advance in association with each other. Further, these pieces of information stored in the browser session information management table 421 are used for processing by the information display terminal specifying unit 433 described later. For example, as shown in FIG. 14, the browser session information management table 421 stores associations between SIP phone IDs, information display terminal IDs, and browser session information.

  Returning to FIG. 13, the control unit 430 performs various controls in the HGW 400, and particularly as closely related to the present invention, as shown in FIG. 13, a call session information etc. acquisition unit 431, a SIP phone ID collection unit 432, an information display terminal identification unit 433, and an access destination change instruction unit 434.

  The call session information acquisition unit 431 acquires call session information and the like. Specifically, the call session information etc. acquiring unit 431 has call session information for uniquely identifying communication established by SIP between the subordinate SIP phone 500 and the other SIP phone 500, and information establishing the communication. The user identification information for identifying the user of the display terminal 550 and the arrival / departure determination flag are acquired by being transmitted by the push type from the SIP proxy 200, and the acquired information is transmitted to the information display terminal identification unit 433.

  Here, call session information and Web session information will be described. Originally, session information is information that uniquely identifies communication in the fifth layer in terms of OSI (Open Systems Interconnection). That is, in the service providing system according to the first embodiment, it is assumed that SIP communication and Web communication (HTTP communication) are performed as communication, but both SIP communication and Web communication are TCP (Transmission Control). Protocol) communication cannot be identified in the fourth layer. For this reason, by adding session information to communication established between SIP phones or between information display terminals, it is identified whether the communication is SIP communication or Web communication. That is, call session information is session information indicating SIP communication, and Web session information is session information indicating Web communication.

  In addition, the session information not only identifies SIP communication and Web communication, but communication established between SIP phones and information display terminals is communication established between other SIP phones and information display terminals. It also identifies that the communication is different. In other words, call session information is information that uniquely identifies SIP communication established by SIP between SIP phones, and Web session information is information that uniquely identifies Web communication established between information display terminals. It is information to identify. As call session information, “Call-ID”, which is information included in SIP communication, or “From”, “To”, “tag”, or a method using a combination thereof, or other information included in SIP communication A method using a combination of information (for example, “Date”, etc.) is conceivable, and any method may be used as long as it uses information that can uniquely identify communication established by SIP. On the other hand, as the Web session information, a method using a “session ID” (such as a cookie ID) that is information given to a browser used when the information display terminal performs Web communication can be considered. These call session information and Web session information are generally generated uniquely for each established session, and do not compete with each other in the range of normal application usage.

  Next, user specific information will be described. In the first embodiment, the user specific information is assumed to be SIP-URI as “From” or “To” which is information included in SIP communication. That is, “From” and “To” information may be used as call session information or user-specific information. In the first embodiment, “Call-ID” is used as call session information. It can be said that “From” and “To” are used as user-specific information. Further, the arrival / departure determination flag will be described. It is determined whether the user (information display terminal 550) specified by the user specifying information is a transmission side or a reception side of communication established by SIP. It is a flag to do. For example, a simple flag such as “0” or “1” may be used as the arrival / departure determination flag, or a flag created by a random number may be used.

  Here, in the first embodiment, the departure / arrival determination flag is used in two ways. First, the arrival / departure determination flag is used for management in the session management server 100 by the SIP proxy 200 transmitting to the HGW 400 and the information display terminal 550 transmitting to the session management server 100. The arrival / departure determination flag is used for service control in the service management server 300 when the session management server 100 transmits it to the information display terminal 550 and the information display terminal 550 transmits it to the service management server 300. There is a technique for realizing the departure / arrival determination flag used in the former meaning and the arrival / departure determination flag used in the latter meaning by using the same flag. For example, the former arrival / departure determination flag is “0” or “1”. A method of using the simple flag as described above and using the flag generated by a random number or the like for the latter arrival / departure determination flag is also conceivable. That is, according to a method that is realized by using differently, the session management server 100 can create a random number arrival / departure determination flag as information that only the session management server 100 can determine, and as a result, the information display terminal 550 The situation where the side impersonates the arrival / departure determination flag can be prevented. In other words, when a simple flag such as “0” or “1” is used for the latter arrival / departure determination flag, the information display terminal 550 on the calling side has transmitted “1” as its own arrival / departure determination flag. Therefore, the arrival / departure determination flag indicating the arrival side is estimated to be “0”, and the estimated “0” can be used to impersonate the arrival side. In order to prevent such impersonation, it is desirable to create the latter arrival / departure determination flag by a method that is not estimated by the information display terminal 550. In this sense, the method for realizing this is not limited to random numbers. For example, the session management server 100 encrypts the arrival / departure determination flag (only the service providing server 300 encrypts it with a decryptable key). But you can. The service providing server 300 performs service control based on the arrival / departure determination flag by inquiring or decoding the session management server 100.

  The SIP phone ID collection unit 432 collects the SIP phone ID. Specifically, the SIP phone ID collection unit 432 collects a SIP phone ID, which is information for uniquely identifying the subordinate SIP phone 500, from information included in the SIP communication. In addition, the SIP phone ID collection unit 432 transmits the collected SIP phone ID to the information display terminal identification unit 433.

  Here, the SIP phone ID is an extension number of the SIP phone 500, for example. In a configuration in which a plurality of SIP phones 500 are connected under the HGW, a SIP-URI (Uniform Resource Identifier) is assigned to the HGW, and an extension number is assigned to each SIP phone 500 under the HGW. That is, when the SIP phone 500 under the HGW is designated as the communication partner, a combination of the HGW's SIP-URI and extension number must be designated.

  The information display terminal specifying unit 433 specifies the information display terminal 550 used in combination with the SIP phone 500 that has established communication by SIP. Specifically, the information display terminal specifying unit 433 searches the browser session information management table 421 using the SIP phone ID collected by the SIP phone ID collection unit 432 as a search key, and is uniquely identified by the SIP phone ID. The information display terminal 550 used in combination with the SIP phone 500 is specified, and the browser session information of the information display terminal 550 is specified. Next, the information display terminal specifying unit 433 compares the specified browser session information with the browser session information of each of the plurality of information display terminals 550 that polls the HGW 400, and performs polling that matches the browser session information. The information display terminal 550 is identified as the information display terminal 550 used in combination with the SIP phone 500 that has established communication by SIP. Then, the information display terminal specifying unit 433 sends to the access destination change instructing unit 434 information specifying the information display terminal 550, call session information, etc. (call session information attached with a signed certificate of the SIP proxy 200, user specifying information) , And a departure / arrival determination flag).

  The access destination change instruction unit 434 issues an access destination change instruction to the information display terminal 550. Specifically, the access destination change instructing unit 434 receives information specifying the information display terminal 550 and call session information from the information display terminal specifying unit 433 (call session information attached with a signed certificate of the SIP proxy 200, user When the specific information and the arrival / departure determination flag) are transmitted, a redirect instruction is issued to instruct the information display terminal 550 specified by the specific information to change the access destination to the URL of the session management server 100. Perform with information.

[SIP phone 500]
The SIP phone 500 is realized by a general-purpose SIP phone, and particularly closely related to the present invention is an input unit 501, an output unit 502, and an input / output control I / F unit as shown in FIG. 503 and a SIP communication unit 504.

  Since both are the same as the general-purpose SIP phone 500, the input unit 501 inputs information used for the SIP phone 500, operation instructions for performing various processes, and the like using number keys, a microphone, and the like. The output unit 502 outputs the results of various processes by the SIP phone 500 and operation instructions for performing the various processes to a display and a speaker. The input / output control I / F unit 503 includes the input unit 501, The information transfer between the output unit 502 and the SIP communication unit 504 is controlled. The SIP communication unit 504 includes a general interface and library for SIP, and is connected to the other SIP phone 500 (through the HGW 400). Send and receive information.

[Information display terminal 550]
The information display terminal 550 is realized by providing each unit described below in a general-purpose PC, an information home appliance, and the like, and particularly as closely related to the present invention, as shown in FIG. 13, an input unit 551 An output unit 552, an input / output control I / F unit 553, an HTTP communication unit 554, and a control unit 555.

  The input unit 551 inputs information used for the information display terminal 550, operation instructions for performing various processes, and the like with a keyboard, a mouse, a remote controller, and the like. The output unit 552 results from various processes performed by the information display terminal 550. In addition, an operation instruction for performing various processes is output to a display, a printer, or the like. The input / output control I / F unit 553 includes an input unit 551, an output unit 552, an HTTP communication unit 554, and a control unit 555. The HTTP communication unit 554 includes a general interface and library for HTTP communication, and transmits / receives information to / from the service providing server 300 (via the HGW 400).

  The control unit 555 performs various controls in the information display terminal 550, and particularly as closely related to the present invention, as shown in FIG. 13, a service start request unit 556, a service use unit 557, and a connection destination monitor A functional unit 558.

  The service start request unit 556 sends a service start request for starting the service together with call session information and the like (call session information attached with a signed certificate of the SIP proxy 200, user identification information, and arrival / departure determination flag). It transmits to the session management server 100. Specifically, when the service start request unit 556 is redirected by the access destination change instruction unit 434 of the HGW 400, the service start request unit 556 changes the access destination to the session management server 100, and the call management information and the session management server 100 together with the service start request. Send to.

  The service using unit 557 receives Web session information. Specifically, the service using unit 557 receives Web session information from the service providing server 300. Further, the service using unit 557 uses the received Web session information to receive the service provided by the service providing server 300 and use the service. Specifically, the service using unit 557 assigns Web session information to a Web browser that performs HTTP communication, and performs Web communication with the service providing server 300 in order to receive service provision. In the first embodiment, communication by the service using unit 557 is referred to as “Web communication” in the sense that the communication is related to the Web service.

  The connection destination monitoring function unit 558 monitors the connection destination of the information display terminal 550 and periodically transmits the connection destination to the session management server 100. Specifically, the connection destination monitoring function unit 558 is provided in the information display terminal 550 by installing a program (for example, a Java (registered trademark) Script file) transmitted from the session management server 100, and then the session is displayed. Communication is established with the management server 100, and the monitored connection destination URL is periodically transmitted by polling. Although the connection destination monitoring function unit 558 transmits the connection destination to the session management server 100 in the first embodiment, the present invention is not limited to this. For example, the session management server 100 may periodically transmit a connection destination transmission request to the Web browser of the information display terminal 550, and the Web browser may periodically transmit the connection destination in response thereto.

[Procedure of processing by the service providing system according to the first embodiment]
Subsequently, a processing procedure performed by the service providing system according to the first embodiment will be described with reference to FIGS. FIG. 15 is a sequence diagram (outgoing side) illustrating a processing procedure performed by the service providing system according to the first embodiment, FIG. 16 is a flowchart illustrating a procedure of available service confirmation processing, and FIG. FIG. 18 is a sequence diagram (destination side) illustrating a processing procedure performed by the service providing system according to the first embodiment, and FIG. 19 is a diagram illustrating the service providing system according to the first embodiment. FIG. 20 is a sequence diagram (service start request) showing the processing procedure, FIG. 20 is a flowchart showing the access right confirmation processing procedure, FIG. 21 is a diagram for explaining the control page, and FIG. It is a sequence diagram (after service start) which shows the procedure of the process by the service provision system which concerns on Example 1. FIG.

  As shown in FIG. 15, first, SIP communication of steps S101 to S103 is performed between both SIP phones 500 (SIP communication unit 504) under the control of the SIP proxy 200 (SIP communication control unit 231). As a result, in step S104, communication (call) is established between both SIP phones 500 by SIP. Note that Digest authentication, REGISTER processing, and the like in SIP communication are not shown, but are performed prior to step S101, as in general SIP communication.

  When communication is established between the two SIP phones 500 by SIP, the HGW 400 (call session information etc. acquiring unit 431) calls the call session information that uniquely identifies the communication established by the SIP, or both SIPs that have established the communication. User identification information for uniquely identifying the user of the phone 500, an arrival / departure determination flag, and the like are acquired (step S105). For example, the HGW 400 (call session information etc. acquiring unit 431) performs “Call-ID” as call session information, “From (SIP-URI)” and “To (SIP-URI)” as user identification information, and both SIPs. A “departure / departure determination flag” (indicated as “departure / departure flag” in FIG. 15) indicating whether the phone 500 is the calling side or the called side is attached in a verifiable format (with the signed certificate of the SIP proxy 200 attached) In the format shown in FIG. 15, “certificate (S)” is displayed).

  Here, the signed certificate of the SIP proxy 200 will be briefly described. Since the SIP proxy 200 is a device that controls communication established by SIP or communication established by SIP, the SIP proxy 200 itself It is common to manage information related to sessions established by control. Therefore, when the SIP proxy 200 (SIP communication control unit 231) establishes a session between the two SIP phones 500 under its own control, "Call-ID", "From (SIP-URI (Uniform Resource Identifier))" , “To (SIP-URI)”, information identifying whether both SIP phones 500 are the calling side or the called side, and the like can be collected from the SIP signal of the established session.

  Therefore, the SIP proxy 200 (call session information transmission unit 232) collects call session information collected from the SIP signal (call session information attached with a signed certificate of the SIP proxy 200, user identification information, and arrival / departure determination flag). ) Is issued with a signed certificate of the SIP proxy 200, and the signed certificate is attached to the call session information or the like, thereby issuing the call session information or the like in a verifiable format. Then, the SIP proxy 200 (call session information transmission unit 232) sends the call session information and the like issued in a verifiable format between the HGW 400 that connects the originating SIP phone 500 and the terminating SIP phone 500. For example, it is transmitted to the HGW 400 connected to the subordinates in a push type.

  In this way, the HGW 400 (call session information acquisition unit 431), as described above, “Call-ID”, “From (SIP-URI)”, “To (SIP-URI)”, “Departure and Arrival Flag” Are obtained in a verifiable format. The HGW 400 (call session information etc. acquiring unit 431) may acquire the information by collecting the information itself.

  Returning to FIG. 15, subsequently, the HGW 400 (SIP phone ID collection unit 432) collects the SIP phone ID, which is information for uniquely identifying the subordinate SIP phone 500, from the information included in the SIP communication (step S106). ). Note that the SIP phone ID is, for example, an extension number of the SIP phone 500. In a configuration in which a plurality of SIP phones 500 are connected under the HGW 400, the SIP-URI is assigned to the HGW 400, and an extension number is assigned to each of the SIP phones 500 under the HGW 400.

  Then, the HGW 400 (information display terminal specifying unit 433) specifies the information display terminal 550 used in combination with the SIP phone 500 that has established communication by SIP in step S104 (step S107). Specifically, the HGW 400 (information display terminal specifying unit 433) first specifies the information display terminal 550 by searching the browser session information management table 421 using the SIP phone ID as a key, and the specified information display terminal 550 The browser session information is compared with the browser session information of each of the plurality of information display terminals 550 that poll the HGW 400, and is used in combination with the SIP phone 500 that establishes communication by SIP when the browser session information matches. The information display terminal 550 is specified.

  Then, the HGW 400 (access destination change instruction unit 434) issues an access destination change instruction to the information display terminal 550 specified in step S107. Specifically, a redirect instruction instructing the specified information display terminal 550 to change the access destination to the URL of the session management server 100, call session information, etc. (attached with a signed certificate of the SIP proxy 200) Call session information, user identification information, and arrival / departure determination flag) (step S108). At this time, the HGW 400 (access destination change instruction unit 434) in the first embodiment includes the URL of the HGW 400 in the redirect instruction. In the first embodiment, the HGW 400 stores the URL of the session management server 100 in the storage unit in advance, so that a redirect instruction can be issued to change the access destination to the URL.

  Then, the information display terminal 550 (service start request unit 556) is redirected, the connection destination is changed to the session management server 100, and a service start request for requesting to start the service is transmitted to the session management server 100 ( Step S109). At this time, the information display terminal 550 (service start request unit 556) calls the call session information and the like (call session information attached with a signed certificate of the SIP proxy 200, user identification information, and arrival / departure determination flag), and the HGW 400 The URL is transmitted to the session management server 100.

  On the other hand, when the session management server 100 (control page generation unit 131) receives the call session information or the like transmitted from the information display terminal 550, the session management server 100 (control page generation unit 131) verifies the call session information or the like (step S110). That is, the session management server 100 (control page generation unit 131) verifies that the call session information or the like is authentic information by verifying the signed certificate attached to the call session information or the like. As a method for verifying that the call session information or the like is authentic information, a method for inquiring the SIP proxy 200 may be used.

  Subsequently, when the session management server 100 (control page generation unit 131) confirms that the call session information or the like is authentic information as a result of the verification in step S110, the session management server 100 (control page generation unit 131) controls the call session information or the like or the URL of the HGW 400 for control. The information is stored in the session management table 124 and the control session information is paid out (step S111).

  That is, the session management server 100 (control page generation unit 131) controls “Call-ID”, “From (SIP-URI)”, “To (SIP-URI)”, “Departure / Departure flag”, and the URL of the HGW 400. Stored in the management session management table 124 and pays out control session information. Then, the control session management table 124 stores information as shown in FIG. 6, for example. As shown in FIG. 6, the session management server 100 (control page generation unit 131) may acquire and store the communication start time established by SIP, the IP address of the information display terminal 550, and the like. . For example, when the IP address is stored, the session management server 100 (control page generation unit 131) uses the IP address to handle the SIP proxy 200 or the like (not limited to the SIP proxy 200 but the correspondence between the IP address and the SIP-URI). System, etc.) and receive a response of the SIP-URI associated with the IP address, so that “From (SIP-URI)” and “To (SIP-URI)” It is possible to verify whether or not the information is correct information, and security can be improved.

  Returning to FIG. 15, subsequently, the session management server 100 (control page generation unit 131) confirms a service that can be used by the information display terminal 550 (originating side) that has transmitted the service start request, and acquires a service ID. (Step S112).

  Here, the service confirmation process that can be used will be described in detail with reference to FIG. 16. First, the session management server 100 (control page generation unit 131) determines the user identification information (“From (SIP-URI)”) The user contract service management table 121 is searched using "To (SIP-URI)") as a key, and the contract service ID contracted by the calling user and the called user is acquired (step S112-1). For example, taking the user contract service management table 121 shown in FIG. 3 as an example, the session management server 100 (control page generation unit 131) uses the user identification information “sip: 0333333333@hogehoge.com” on the calling side as a user. The contract service management table 121 is searched, and the contract service IDs “1111”, “1112”, “1115”, and “1117” are acquired.

  Next, the session management server 100 (control page generation unit 131) searches the contract service information table 122 using the contract service ID as a key, and obtains the service type, the incoming simultaneous connection flag, the connection type, the access destination URL, and the destination URL. Obtain (step S112-2). For example, the contract service information table 122 shown in FIG. 4 will be described as an example. The session management server 100 (control page generation unit 131) uses the service type “00”, the incoming simultaneous connection flag as information on the contract service ID “1111”. Acquire “0”, connection type “0”, access destination URL “http://hoge1111.com/”, destination URL “−”, and other contract service IDs “1112”, “1115” and “1117” The same applies to.

  Subsequently, the session management server 100 (control page generation unit 131) determines whether or not there is a received incoming connection flag “1” in the acquired information (step S112-3). Here, the incoming simultaneous connection flag means that the service identified by the contract service ID is a service of a call center type (a type that starts a service simultaneously with an incoming call) or a portal type (a type that displays a service selection screen when an incoming call is received). ) Is a flag indicating whether it is a service. In the first embodiment, since it is assumed that the priority of the call center type service is high, it is first determined whether or not there is an incoming call simultaneous connection flag “1”.

  There is no call center type service in the contract service IDs “1112”, “1115”, and “1117”, but there is an incoming call simultaneous connection flag “1” (Yes in step S112-3). In other words, the session management server 100 (control page generation unit 131) next checks the service type (step S112-4). Here, the service type is a service that can be used if either the originating user or the terminating user is subscribed to the service identified by the contract service ID, or both the originating user and the terminating user. This is a service that cannot be used unless the subscriber is subscribed, or is a service that can be used if either the originating user or the terminating user is subscribed but can only be activated by the subscriber.

  As a result of checking the service type, if there is a service available to the calling user (Yes at step S112-5), then the session management server 100 (control page generating unit 131) checks the connection type (step S112). -6). Here, the connection type is a service that presents the same URL as the connection destination to the calling user and the called user, or a service that presents different URLs, or is different for subscribers and non-subscribers. It indicates whether the service presents a URL. In other words, it is information for enabling connection to different URLs on the calling side and the called side.

  That is, when the connection type is “same URL for arrival and departure” (Yes at Step S112-7), the session management server 100 (control page generation unit 131) acquires the contract service ID and the access destination URL (Step S112-7). S112-8). When the connection type is “different URL” (No at Step S112-7, Yes at Step S112-9), the session management server 100 (control page generation unit 131) determines that the contract service ID, the originating URL, Is acquired (step S112-10). If the connection type is “subscriber URL, non-subscriber URL” (No at step S112-9), then the session management server 100 (control page generator 131) indicates that the originating user is a subscriber. (Step S112-11), and if it is a subscriber (Yes at Step S112-11), obtain the contract service ID and the subscriber URL (Step S112-12), and subscribe. If not (No at Step S112-11), the contract service ID and the non-subscriber URL are acquired (Step S112-13).

  As a result of checking the service type in step S112-5, if there is no service available to the calling user (No in step S112-5), the session management server 100 (control page generation unit 131) For a service other than the service (portal type service), the service type is checked (step S112-14).

  As a result of checking the service type, if there is no service available to the calling user (No at step S112-15), the session management server 100 (control page generation unit 131) ends the process (sends a service start request). If there is no service available to the originating user who has made the request, the service is terminated upon notification of an error), and if there is a service available to the originating user (Yes in step S112-15), the session The management server 100 (control page generation unit 131) performs the same processing as that in steps S112-7 to S13-13 described above.

  Returning to FIG. 15, subsequently, the session management server 100 (control page generation unit 131) generates a control page (step S113). For example, the session management server 100 (control page generation unit 131) generates a control page as shown in FIG. 17 by describing it in HTML (HyperText Markup Language). Here, “Region 1” and “Region 2” will be described. “Region 1” and “Region 2” are concepts corresponding to frames in a Web page displayed by a general Web browser. For example, “area 1” is a connection monitoring frame, and “area 2” is a web service frame.

  Returning to FIG. 15, the session management server 100 (control page generation unit 131) generates the connection destination monitoring function, the control session information paid out in step S111, and the information display terminal 550 in step S113. The control page and the service ID acquired in step S112 are transmitted (step S114). Here, the connection destination monitoring function is, for example, a Java (registered trademark) Script file, and is installed in the information display terminal 550 to establish communication between the information display terminal 550 and the session management server 100. This is a function for monitoring the connection destination of the information display terminal 550. If a dedicated application is installed in the information display terminal 550, it is not necessary to transmit such a connection destination monitoring function. However, in the first embodiment, only a general Web browser is installed in the information display terminal 550. Therefore, it is necessary to send the connection destination monitoring function.

  Then, the information display terminal 550 displays the control page transmitted from the session management server 100 from the web browser (step S115). Further, the information display terminal 550 installs the connection destination monitoring function transmitted from the session management server 100 as the connection destination monitoring function unit 558. Then, the connection destination monitoring function unit 558 establishes communication with the session management server 100 (connection destination monitoring unit 132), and performs polling using the control session information transmitted from the session management server 100. Thus, the URL of the connection destination of the information display terminal 550 is periodically transmitted to the session management server 100 (connection destination monitoring unit 132). On the other hand, the session management server 100 (connection destination monitoring unit 132) confirms the control session information used for polling (step S116), thereby connecting the connection destination of the information display terminal 550 that has issued the control session information. Monitor regularly.

  By the way, as described above, regarding the control page, “area 1” is a connection destination monitoring frame and “area 2” is a web service frame. The relationship with the connection monitoring function will be described with an example. Here, assuming that the connection destination monitoring function (Java (registered trademark) Script file) is installed in both “area 1” and “area 2”, in this case, for example, “area 1”. The connection destination monitoring function notifies the session management server 100 of such a state change when the connection destination is changed for each service providing server. The connection destination monitoring function of “area 2” When a change is made within the same service providing server, such a change in state is notified to the session management server 100. In addition, since “area 2” is a frame for a Web service, when the connection destination is changed for each service providing server, the connection destination monitoring function that has been rewritten and installed may be lost. In such a case, the information display terminal 550 may separately request the session management server 100 to download the connection destination monitoring function and install the downloaded connection destination monitoring function in “area 2” again.

  Heretofore, the information display terminal 550 on the calling side has been described, but the same processing is performed on the information display terminal 550 on the called side as shown in FIG. In this way, the connection monitoring function is installed on both the originating information display terminal 550 and the called information display terminal 550, and communication is established between each connection destination monitoring function unit 558 and the session management server 100.

  Subsequently, as shown in FIG. 19, the user of the originating information display terminal 550 selects a service from the control page displayed on the Web browser (step S120), whereby the information display terminal 550 (service The start request unit 556) transmits a service start request to the session management server 100 (step S121). At this time, the information display terminal 550 (service start request unit 556) transmits the service ID of the selected service to the session management server 100 using the control session information transmitted in step S114.

  Then, the session management server 100 (service start unit 133) confirms that the control session information transmitted from the information display terminal 550 is registered in the control session management table 124 (step S122). Subsequently, the in-access service management table 125 is confirmed, and the control session information is set (step S123). That is, the session management server 100 (service start unit 133) confirms whether the service start request transmitted from the information display terminal 550 is the first one or the second or later (service change request). Accordingly, the in-access service management table 125 is confirmed. Here, since it is assumed that this is the first service start request, the session management server 100 (service start unit 133) immediately sets the control session information transmitted from the information display terminal 550.

  For example, as shown in FIG. 7, the session management server 100 (the service start unit 133) associates the control session information, the service ID being accessed (the service ID transmitted with the service start request), and the status, This is set in the in-access service management table 125. Here, the status indicates a status indicating whether the service is being prepared, whether the service is being prepared by a request from the other party, whether the service is being used, or the service is being interrupted. is there. In step S123, since the originating information display terminal 550 is preparing for service use, “1” is set as the status. If services do not compete with each other, even the same user can use a plurality of services.

  Subsequently, the session management server 100 (service start unit 133) performs an access right confirmation process for the service providing server 300 (step S124). Here, the access right confirmation process will be described in detail with reference to FIG. 20. First, the session management server 100 (service start unit 133) uses the control session information transmitted together with the service start request as a key to control session management. The table 124 is searched to obtain user identification information for arrival and departure (step S124-1). For example, taking the control session management table 124 shown in FIG. 6 as an example, the session management server 100 (service starting unit 133) searches the control session management table 124 using the control session information “s11111111” as a key, Obtain the Call-ID “cs333933333” associated with the control session information “s11111111”, then “From” or “To” associated with the Call-ID “cs333933333” From the flag or the like, “sip: 0333333333@hogehoge.com” is acquired as the user-specific information on the calling side, and “sip: 0344444444@hogehoge.com” is acquired as the user-specific information on the called side.

  Next, the session management server 100 (service start unit 133) searches the user contract service management table 121 using the user identification information of arrival / departure as a key, and acquires the contract service ID contracted by the origination user and the destination user. (Step S124-2). For example, taking the user contract service management table 121 shown in FIG. 3 as an example, the session management server 100 (service start unit 133) uses the user identification information “sip: 0333333333@hogehoge.com” as a key and the contract service ID “1111”. ”,“ 1112 ”,“ 1115 ”, and“ 1117 ”, and contract service IDs“ 1111 ”and“ 1112 ”are acquired using the user identification information“ sip: 0344444444@hogehoge.com ”as a key.

  Then, the session management server 100 (service start unit 133) confirms whether or not the service ID transmitted together with the service start request is a contract service ID contracted by the originating user (step S124-3). ). As a result of the confirmation, if the contracting service ID is contracted by the originating user (Yes at step S124-3), the session management server 100 (service starting unit 133) performs the next process (the process at step S125 in FIG. 19). The process is terminated to shift to. On the other hand, as a result of the confirmation, if it is not the contracted service ID contracted by the originating user (No at step S124-3), then the session management server 100 (service start unit 133) is transmitted along with the service start request. It is confirmed whether or not the service ID is a contract service ID with which the called-side user has a contract (step S124-4).

  As a result of the confirmation, if the contracted service ID is contracted by the called-side user (Yes at step S124-4), the session management server 100 (service starting unit 133) uses the contracted service ID as a key to contract service information table 122. To obtain the service type (step S124-5). Then, the session management server 100 (service start unit 133) determines whether or not the service type is “00” (step S124-6), and if it is “00” (Yes in step S124-6), Since this service can be used if either the user on the receiving side or the user on the called side is subscribed, the process is terminated to shift to the next process (the process in step S125 in FIG. 19). On the other hand, if it is not “00” (No in step S124-6), the service cannot be used (or cannot be activated by the originating user), and the information display terminal 550 is notified that the service cannot be used. (Step S124-7).

  As a result of the confirmation in Step S124-4, if the contracted service ID is not contracted by the called user (No in Step S124-4), the service cannot be used, so the session management server 100 (Service The start unit 133) notifies the information display terminal 550 that the service cannot be used (step S124-7).

  Returning to FIG. 19, next, the session management server 100 (service start unit 133) pays out the arrival / departure association ID and registers it in the arrival / departure association ID table 126 (step S 125). Here, the outgoing / incoming linking ID is an ID used for linking the outgoing information display terminal 550 and the incoming information display terminal 550 in the service providing server 300. Since communication established by SIP between the originating SIP phone 500 and the terminating SIP phone 500 can be uniquely identified by call session information, the service providing server 300 uses the call session information. For example, the originating information display terminal 550 and the called information display terminal 550 can be associated with each other. However, when it is considered that there is a security problem in disclosing the call session information to the service providing server 300, the call session information itself should not be disclosed to the service providing server 300. Thus, in the first embodiment, the session management server 100 pays out the arrival / departure association ID as the pseudonym ID of the call session information.

  For example, taking the arrival / departure association ID table 126 shown in FIG. 8 as an example, the session management server 100 (service start unit 133) determines the control session information, service ID, and arrival / departure association ID for both arrival and departure. Are registered in association with each other.

  Returning to FIG. 19, the session management server 100 (service start unit 133), with respect to the information display terminal 550, the URL of the service providing server (obtained in step S 112), the arrival / departure association ID, and the arrival / departure determination flag Are transmitted (step S126). In addition, the session management server 100 (service start unit 133) in the first embodiment transmits the arrival / departure association ID and the arrival / departure determination flag in a verifiable format. For example, the session management server 100 (the service start unit 133) issues a signed certificate of the session management server 100 for the issued departure / arrival association ID and the arrival / departure determination flag, and uses the signed certificate as the departure / arrival association ID. By attaching to the departure / arrival determination flag, the departure / arrival linking ID and the arrival / departure determination flag are issued in a verifiable format.

  On the other hand, the information display terminal 550 (service utilization unit 557) connects to the URL transmitted from the session management server 100, and transmits the arrival / departure association ID transmitted from the session management server 100 to the service providing server 300 ( Step S127).

  Then, when the service providing server 300 (departure / arrival association ID receiving unit 331) receives the arrival / departure association ID transmitted from the information display terminal 550, the service provision server 300 verifies the arrival / departure association ID (step S128). That is, the service providing server 300 (departure / arrival association ID receiving unit 331) verifies the certificate with a signature attached to the between-arrival / association ID, and confirms that the inter-departure association ID is authentic information. Validate. Note that as a method for verifying that the link ID between departure and arrival is authentic information, a method for inquiring the session management server 100 may be used.

  Subsequently, when the service providing server 300 (Web session information payout unit 332) confirms that the arrival / departure association ID and the arrival / departure determination flag are authentic information as a result of the verification in step S128, the service provision server 300 (Web session information payout unit 332) Web session information is paid out as information to be given to Web communication performed by the information display terminal 550 that has transmitted the arrival / departure determination flag (Web communication performed by the information display terminal 550 with the service providing server 300 in order to receive service provision) The information is stored in the web session information management table 321 (step S129). Then, as shown in FIG. 12, the Web session information management table 321 stores Web session information, a departure / arrival association ID, and an arrival / departure determination flag. As described above, if the service providing server 300 (Web session information paying unit 332) also stores the arrival / departure determination flag, the service providing server 300 (service providing unit 333) provides the service. It is also possible to control service provision based on the departure / arrival determination flag.

  In addition, for example, the service providing server 300 (Web session information paying unit 332) displays various information such as call session information itself, user identification information, communication start time established by SIP, IP address, and service name. If the information can be acquired by being notified from the display terminal 550 or the session management server 100, the information may be stored in the Web session information management table 321 and the service provision may be controlled based on the information. Good.

  Returning to FIG. 19, the service providing server 300 (Web session information payout unit 332) subsequently generates a screen of region 2 (step S130), and the generated screen of region 2 together with the Web session information paid out in step S129. Is transmitted to the information display terminal 550 (step S131).

  Then, the screen of area 2 is displayed on the Web browser of the information display terminal 550 (step S132). For example, a screen as shown in FIG. 21 is displayed.

  By the way, in the first embodiment, the session management server 100 (service start unit 133) controls the information display terminal 550 on the caller side in response to the service start request in step S121 (at the same time), and simultaneously displays the information on the callee side. The terminal 550 is also controlled (steps S133 to S139). For this reason, both the information display terminal 550 on the calling side and the information display terminal 550 on the called side immediately enter the state of using the service.

  That is, the service providing server 300 (service providing unit 333) pays out Web session information to the originating information display terminal 550 in step S129 and stores it in the Web session information management table 321. In step S136, the service providing server 300 (service providing unit 333) Web session information is paid out to the information display terminal 550 and stored in the Web session information management table 321. Then, in step S140, the service providing server 300 (service providing unit 333) sets each of the predetermined arrival / departure linking IDs among the plurality of departure / arrival linking IDs stored in the Web session information management table 321 by SIP. When it is shown that the communication is established as the same communication, the services provided by using the Web session information stored in association with each of the arrival / departure association IDs are associated with each other and controlled ( Steps S141 to S144).

  For example, one information display terminal 550 (service utilization unit 557) uploads image data to the service providing server 300 by web communication to which the web session information issued in step S129 is attached (step S142), and the other It is assumed that the information display terminal 550 (service utilization unit 557) is accessing the service providing server 300 through Web communication to which the Web session information paid out in step S136 is assigned (step S141). Then, the service providing server 300 (service providing unit 333) controls the service so as to transmit image data to the other information display terminal 550, so that the image data is transmitted to the other information display terminal 550 (step S143). The other information display terminal 550 displays the image data on the output unit 552 (step S144).

  As described above, in the first embodiment, the session management server 100 (service start unit 133) controls the information display terminal 550 on the calling side simultaneously (or immediately) with the control of the information display terminal 550 on the calling side. However, the present invention is not limited to this. As another method, for example, when the callee information display terminal 550 selects a service by itself and transmits a service start request to the session management server 100 in the same manner as the caller information display terminal 550, a session is started. The present invention can be similarly applied to a method in which the management server 100 (service start unit 133) also controls the information display terminal 550 on the called side. Alternatively, for example, when the originating information display terminal 550 requests the session management server 100 to control the terminating information display terminal 550, the session management server 100 performs step S133 and subsequent steps. The present invention can be similarly applied to the method of starting the process.

  Thereafter, as shown in FIG. 22, the information display terminal 550 (service utilization unit 557) notifies the session management server 100 that the connection to the service providing server 300 is completed together with the control session information and the service ID ( Step S150).

  Then, the session management server 100 (service start unit 133) confirms that the control session information notified from the information display terminal 550 is registered in the control session management table 124 ( Then, the accessing service management table 125 is searched by using the control session information and the service ID as keys, and the status of the searched record is updated from “1” to “3” (service in use) (step S151). Step S152).

  Similarly, the destination information display terminal 550 (service utilization unit 557) notifies the session management server 100 of the completion of connection (step S153), and the session management server 100 (service start unit 133) confirms the control session information. Alternatively, the status is updated (steps S154 to S155).

[Case where the service start request by the information display terminal 550 on the called side is not made in parallel]
By the way, in the above, when communication is established between the two SIP phones 500 by SIP, both the originating information display terminal 550 and the called information display terminal 550 immediately execute a service start request. Have explained. That is, the callee information display terminal 550 performs the process shown in FIG. 18 so that the caller information display terminal 550 performs the processes shown in FIG. I have assumed that. However, the present invention is not limited to this.

  For example, it is assumed that the calling side information display terminal 550 has performed the processing of steps S105 to S115 shown in FIG. 15, but the called side information display terminal 550 has not performed the processing shown in FIG. In such a case, when the originating information display terminal 550 performs the process of step S120 shown in FIG. 19, the processes of steps S121 to S132 are performed as described above. At this time, for example, when the session management server 100 pays out the arrival / departure association ID in step S125, the session arrival / departure association ID is also delivered to the information display terminal 550 on the arrival side. Therefore, it is stored that a service start request from the information display terminal 550 on the called side is waiting. Then, for example, when the called-side information display terminal 550 starts the process shown in FIG. 18 at the stage of step S130, the connection-destination monitoring function and session management of the called-side information display terminal 550 are shown in FIG. Polling is performed with the server 100, and by using this polling, the session management server 100 displays the arrival / departure linking ID and the arrival / departure determination flag that have been waiting on the information display terminal 550 on the arrival side. Can be paid out.

[Call center type service]
In the above, it has been assumed that the service provided to the information display terminal 550 is a portal type service (a type that displays a service selection screen when an incoming call), but the present invention is not limited to this. Alternatively, the service may be a call center type (a type that starts a service upon receiving a call). The processing procedure in this case will be described. First, the session management server 100 checks available services in step S112 in FIG. 15, and if this is a call center type service, steps S123 to S125 in FIG. The process is performed first. Thereafter, the session management server 100 generates “area 1” and “area 2” as control pages, as shown in step S113 in FIG. At this time, the URL of the service providing server 300 is embedded as link information in “area 2”. Then, the session management server 100 transmits to the information display terminal 550 the connection destination monitoring function, the control session information, the arrival / departure association ID, and the control page (the URL of the service providing server 300 is embedded). Then, the information display terminal 550 connects to the service providing server 300 by being redirected. Thereafter, the service providing server 300 performs the same process as in step S128 of FIG.

[Effect of Example 1]
As described above, according to the first embodiment, when providing a service based on a temporary communication relationship, the connection destination of the information display terminal can be controlled and integratedly managed.

  Further, according to the first embodiment, the connection destination of the information display terminal can be controlled based on terminal information such as SIP-URI.

  Further, according to the first embodiment, it is possible to control the connection destination of the information display terminal based on the identification of whether the terminal is the calling terminal or the called terminal.

  Further, according to the first embodiment, the connection destination of the information display terminal can be controlled based on the identification of whether the service is a call center type or a portal type.

  Also, according to the first embodiment, whether the service is provided to the originating information display terminal and the called information display terminal with the same URL or different URLs, the subscriber It is also possible to control the connection destination of the information display terminal based on the identification of whether the URL is provided by a different URL depending on whether it is a non-subscriber or non-subscriber.

  Further, according to the first embodiment, since the connection ID of the information display terminal is controlled and centrally managed after paying out the arrival / departure association ID as a pseudonym, based on the temporary communication relationship while improving the security It is also possible to realize service provision. Further, when the session management server issues such pseudonym information, the service providing server can provide the service without directly knowing the call session information (From, To, etc.). As a result, it is possible to prevent attacks that exploit call session information, and it is possible to provide services by the service providing server while protecting privacy information such as call records. This operation is in common with so-called single sign-on (SSO) on the Web. As a feature of this method, these pseudonym information is linked with call session information in the session management server. Therefore, if something goes wrong, it is possible to confirm that the session exists as before by making an inquiry to the session management server. An attack that misuses call session information is, for example, a third party sending a disconnection instruction including the call session information to a connected session, thereby terminating the service unintended by the user. Is caused by a person.

  Further, according to the first embodiment, the user of the information display terminal and the Web service provider need not be aware of the connection destination of the information display terminal.

  In addition, the connection destination is determined based on the subscription status (usability etc.) of the web service of the originating user (user of the originating information display terminal) and the terminating user (user of the terminating information display terminal). It is also possible to control.

  Further, according to the first embodiment, the service providing apparatus controls the web service based on the relationship between the terminals that have established the SIP communication, using the unique ID between the arrival and departure that is paid out every time the SIP communication is established. Thus, unlike the conventional IM service, it is not necessary to link the arrival / departure terminal based on a buddy list or the like.

  Further, in the conventional IM service and the like, a dedicated application corresponding to the IM service has to be installed in the terminal. However, according to the first embodiment, the terminal is a browser that performs Web communication (HTTP communication). As a basic function, and it is not necessary to provide a dedicated application for each service.

  Further, in the conventional IM service and the like, the user of the terminal has to input a member ID, a password and the like when using the IM service. According to the first embodiment, the user of the terminal Can use the Web service only by a simple operation of SIP communication transmission operation (for example, number input).

  In addition, among the conventional IM services, there is a service with a low security level such that anyone who knows the URL providing the service can access it. The security can be ensured in that at least the SIP authentication is performed (the relationship with the communication partner whose connection is guaranteed in the network).

  So far, as the first embodiment, the method in which the information display terminal makes an initial service start request has been described. However, the service providing system according to the present invention subsequently issues a service start request for a service in which one information display terminal is different. By doing so, it is possible to connect the other information display terminal to the different service. Therefore, in the following, as a second embodiment, a method in which the information display terminal makes a service change request (second and subsequent service start requests) will be described.

[Procedure of Processing by Service Providing System According to Second Embodiment]
A processing procedure performed by the service providing system according to the second embodiment will be described with reference to FIGS. FIG. 23 is a sequence diagram (service end instruction) illustrating a processing procedure performed by the service providing system according to the second embodiment. FIG. 24 is a flowchart illustrating an in-access service management table confirmation process. FIG. FIG. 26 is a sequence diagram (service change) illustrating a processing procedure performed by the service providing system according to the second embodiment.

  In FIG. 23, it is assumed that the originating information display terminal 550 and the terminating information display terminal 550 are already using the service of the service providing server 300 (part 1). FIG. 23 exemplifies a procedure of processing from such a situation until the originating information display terminal 550 and the terminating information display terminal 550 start using the service of the service providing server 300 (part 2). To do. It is assumed that the service of the service providing server 300 (part 1) and the service of the service providing server 300 (part 2) are in a competitive relationship (cannot be used at the same time).

  As shown in FIG. 23, first, the user of the originating information display terminal 550 selects a service from the control page displayed on the Web browser (step S201), whereby the information display terminal 550 (service start) The request unit 556) transmits a service start request to the session management server 100 (step S202). At this time, the information display terminal 550 (service start request unit 556) transmits the service ID of the selected service to the session management server 100 using the control session information, as in the first service start request. The service ID is transmitted for a service different from the service currently in use.

  Then, the session management server 100 (service start unit 133) has the control session information transmitted from the information display terminal 550 registered in the control session management table 124, as in the first service start request. This is confirmed (step S203). Subsequently, the in-access service management table 125 is confirmed, and the control session information is set (step S204). That is, the session management server 100 (service start unit 133) confirms whether the service start request transmitted from the information display terminal 550 is the first one or the second or later (service change request). Accordingly, the in-access service management table 125 is confirmed. Here, since it is assumed that the service start request is the second time, the session management server 100 (service start unit 133) sets the control session information transmitted from the information display terminal 550 in FIG. The confirmation process shown is performed.

  Here, the confirmation process of the in-access service management table will be described in detail with reference to FIG. 24. First, the session management server 100 (service start unit 133) creates the control session management table 124 using the control session information as a key. Searching is performed, and control session information on the called side is acquired (step S204-1). For example, taking the control session management table 124 shown in FIG. 6 as an example, the session management server 100 (service starting unit 133) searches the control session management table 124 using the control session information “s11111111” as a key, The control session information “s22222222” on the called side is acquired.

  Subsequently, the session management server 100 (service start unit 133) searches the in-access service management table 125 using the control session information on the called side and the service ID specified in the service start request as keys (step S204-2). .

  Then, the session management server 100 (service start unit 133) determines whether there is a corresponding record (step S204-3). When there is no record (No in step S204-3), the information display terminal 550 on the called side has not yet used the service that the information display terminal 550 on the calling side is about to start using. It is considered that a service start request collision does not occur, and the session management server 100 (service start unit 133) ends the process to shift to the next process.

  On the other hand, if there is a corresponding record (Yes at step S204-3), then the session management server 100 (service start unit 133) confirms the status (step S204-4), and the status is “1”. It is determined whether or not there is (step S204-5). The case where the status is not “1” (No at Step S204-5) is the case where the status is “3” or “4”. When the status is “3”, the information display terminal 550 on the called side is already using the service that the information display terminal 550 on the calling side is about to start using. It is considered that no collision occurs, and the session management server 100 (service start unit 133) ends the process to shift to the next process. Further, the case where the status is “4” is a situation in which the information display terminal 550 on the called side is about to interrupt the service that the information display terminal 550 on the calling side is about to start using, so the processing is performed for a while. If it looks like it sleeps, it will be thought that the collision of a service start request does not occur after all, and the session management server 100 (service start part 133) will complete | finish a process in order to transfer to the next process.

  On the other hand, when the status is “1” (Yes in step S204-5), the destination information display terminal 550 is about to use the service that the originating information display terminal 550 is about to start using. Since it is in the state of preparation, it is considered that a service start request collision occurs, and the session management server 100 (service start unit 133) notifies the originating information display terminal 550 that the service change is not possible. (Step S204-6).

  As described above, the session management server 100 (service start unit 133) sets the control session information transmitted from the information display terminal 550 in the in-access service management table 125 after performing the confirmation process shown in FIG. In the first and second embodiments, as a method for avoiding the collision of service start requests, it is confirmed whether the service start request is the first one or the second or later (service change request). Only in the latter case, the method of confirming the in-access service management table 125 for the information display terminal 550 on the called side has been described, but the present invention is not limited to this. First, even if the service start request is the first time, the in-access service management table 125 may be confirmed for the information display terminal 550 on the called side. For example, this is effective when the information display terminal 550 on the called side has already started a service before communication between the two SIP phones 500 is established by SIP.

  In addition, the confirmation of the in-access service management table 125 not only confirms the information display terminal 550 on the called side (the other party side) but also confirms the information display terminal 550 on the originating side (the own terminal side). Good. For example, the session management server 100 (service start unit 133) first searches the in-access service management table 125 using the control session information and the service ID as keys, and if there is a corresponding record, the status is “2”. Check whether or not. The status “2” is a situation in which the information display terminal 550 on the called side makes a service start request and the information display terminal 550 on the calling side is also preparing for service use. Therefore, the session management server 100 (service start unit 133) notifies the originating information display terminal 550 that the service cannot be changed. Thereafter, confirmation regarding the information display terminal 550 on the called side may be performed.

  Returning to FIG. 23, subsequently, the session management server 100 (service start unit 133) performs an access right confirmation process for the service providing server 300 (step S205). The access right confirmation process is the same as that described with reference to FIG.

  Next, the session management server 100 (service start unit 133) performs a conflict service check process (step S206). Here, the competitive service check process will be described in detail with reference to FIG. 25. First, the session management server 100 (service start unit 133) searches the in-access service management table 125 using the arrival / departure control session information as a key. The service ID with the status “3” (service in use) is acquired (step S206-1). That is, the session management server 100 (service start unit 133) first checks to see if the service that the originating information display terminal 550 is about to start using conflicts with the service currently being used. The service that is currently in use (service with status “3”) is to be identified. For this reason, a service whose status is “1” (preparing for service use) is reconfirmed after the processing sleeps, and if the status shifts to “3”, a service ID is acquired.

  Subsequently, the session management server 100 (service start unit 133) searches the conflicting service management table 123 using the acquired service ID as a key, and acquires the service ID of the conflicting service (step S206-2). For example, taking the contention service management table 123 shown in FIG. 5 as an example, the session management server 100 (service start unit 133) searches the contention service management table 123 using the currently accessed service ID “1111” as a key, The service ID “1112” is acquired as the service ID of the competing service.

  Then, the session management server 100 (service start unit 133) matches the service ID acquired as the competitive service ID in step S206-3 with the service ID of the service start request transmitted from the originating information display terminal 550. Whether or not (step S206-3). If they do not match (No at Step S206-3), the session management server 100 (service start unit 133) ends the process to shift to the next process (Step S220 in FIG. 26).

  On the other hand, if they match (Yes in step S206-3), the service that the originating information display terminal 550 is about to start using is conflicting with the service that is currently being accessed, so the session management server 100 (service The start unit 133) shifts the processing to an end instruction in order to end the currently accessed service (step S206-4).

  23, the session management server 100 (service start unit 133) issues a competing service end instruction (step S207), and the service end instruction is transmitted to the information display terminal 550 along with the service ID (step S207). S208 to S209). The information display terminal 550 displays a service termination instruction dialog on the web browser (step S210), and then transmits an instruction to forcibly terminate the use of the service to the service providing server 300 (part 1). And so on (step S211). On the other hand, the session management server 100 (service start unit 133) deletes the record of service termination from the in-access service management table 125 (step S212).

  In the second embodiment, the case where there is a competing service has been described as a winning method (the competing service currently being accessed is stopped and a new service is started), but the present invention is not limited to this. A method of continuing a service with a high priority and stopping a service with a low priority, a calling-side priority method, a called-side priority method, or the like can be selected as appropriate according to the form of operation.

  Now, as shown in FIG. 26, the session management server 100 (service start unit 133) sets a record related to the service ID scheduled to be used in the in-access service management table 125 (step S220). At this time, the status is set to “1” for the record to be registered in association with the control session information on the calling side, and the status is set to “2” for the record to be registered in association with the control session information on the called side. May be set. The status “2” indicates that the service is being prepared by a request from the other party (here, the calling party), and may be managed separately in this way.

  Thereafter, the session management server 100 (service start unit 133) performs the processing from step S221 onward for the service providing server 300 (part 2) as in the first service start request. Further, the service providing server 300 (part 2) also performs the processing from step S224 onward in the same manner as the service providing server 300 (part 1) at the time of the initial service start request.

  Thus, when use of the service providing server 300 (part 2) is started in the information display terminal 550 on the calling side and the information display terminal 550 on the called side, the information display terminal 550 is the same as in the first embodiment (see FIG. 22). The (service utilization unit 557) notifies the session management server 100 that the connection to the service providing server 300 (part 2) has been completed, together with the control session information and the service ID, via the connection destination monitoring function. 100 (the service start unit 133) searches the in-access service management table 125 using the control session information and the service ID as keys, and the status of the searched record is set to “1” for the information display terminal 550 on the originating side. The information display terminal 550 on the called side is updated from “2” to “3”. Updated to ".

[Effect of Example 2]
As described above, according to the second embodiment, it is possible to switch the service of the other information display terminal according to a request from the user of the one information display terminal.

  Also, when switching services, it is possible to switch in consideration of service competition.

  In the service providing system according to the present invention, one information display terminal can change the screen output to the output unit of the other information display terminal. In other words, it is possible to synchronize the screen between the originating information display terminal and the terminating information display terminal. Therefore, in the following, as a third embodiment, a method of synchronizing the screen between the calling side information display terminal and the called side information display terminal will be described.

[Processing Procedure by Service Providing System According to Embodiment 3]
A processing procedure by the service providing system according to the third embodiment will be described with reference to FIGS. 27 and 28. FIG. 27 is a sequence diagram (screen change) showing a processing procedure by the service providing system according to the third embodiment, and FIG. 28 is a flowchart showing the status confirmation processing.

  In FIG. 27, it is assumed that the originating information display terminal 550 and the terminating information display terminal 550 are already using the service of the service providing server 300. FIG. 27 shows a situation where the callee information display terminal 550 changes the screen of the caller information display terminal 550 in response to a request from the callee information display terminal 550 in such a situation.

  As shown in FIG. 27, first, the user of the information display terminal 550 on the called side presses a button in the control page displayed on the Web browser (step S301), thereby the information display terminal 550 (service use). The unit 557) transmits an information notification for screen change to the service providing server 300 (step S302). At this time, the information display terminal 550 (service utilization unit 557) transmits the Web session information and the arrival / departure association ID to the service providing server 300.

  Then, the service providing server 300 (service providing unit 333) searches the Web session information management table 321 using the Web session information transmitted from the information display terminal 550 and the link ID between arrival and departure as keys, and the Web session information and the arrival and departure intervals. After confirming the association ID (step S303), a parameter (originating side access parameter) that can specify the site or contents desired to access the originating side information display terminal 550 is designated (step S304). Note that a method for designating a URL or URI (for example, a part of the URL) can be considered as the calling side access parameter. However, the present invention is not limited to this, and any information that can specify the site, contents, etc. Any parameter may be used.

  Then, the service providing server 300 (service providing unit 333) generates a called-side screen to be displayed on the called-side information display terminal 550 (step S305), and displays the called-side information display terminal 550 together with the calling-side access parameters. Transmit (step S306).

  Then, the Web browser of the destination information display terminal 550 activates the connection destination monitoring function unit 558 (step S307), so that the information display terminal 550 (connection destination monitoring function unit 558) An originating screen change confirmation instruction that instructs to change the screen of the display terminal 550 is transmitted to the session management server 100 (step S308). At this time, the information display terminal 550 (connection destination monitoring function unit 558) transmits the information together with the control session information, the arrival / departure association ID, and the calling side access parameter.

  On the other hand, the session management server 100 (screen changing unit 134) searches the departure / arrival association ID table 126 using the control session information and the arrival / departure association ID transmitted from the information display terminal 550 on the arrival side as keys. Side control session information and service ID are acquired (step S309). In the third embodiment, the callee-side information display terminal 550 transmits the control session information and the arrival / departure linking ID, and the session management server 100 (the screen changing unit 134) uses these information to issue the information. Although the method for acquiring the control session information and the service ID on the side has been described, the present invention is not limited to this. For example, the called-side information display terminal 550 transmits control session information and service ID, and the session management server 100 (screen changing unit 134) uses the information to control the calling-side control session information and service ID. The technique of acquiring Alternatively, for example, the arrival-side information display terminal 550 transmits the arrival / departure association ID and the arrival / departure determination flag, and the session management server 100 (screen changing unit 134) uses the information to control the calling-side control session. A method of acquiring information and a service ID may be used.

  Subsequently, the session management server 100 (screen changing unit 134) performs status confirmation processing of the in-access service management table 125 (step S310). Here, the status confirmation process will be described in detail with reference to FIG. 28. First, the session management server 100 (screen changing unit 134) uses the originating control session information and the service ID as a key, and the in-access service management table 125. Is searched (step S310-1).

  When there is no corresponding record (No at Step S310-2), the information display terminal 550 on the calling side does not use the service for which the screen change is desired. In order to make the information display terminal 550 on the originating side use the service, a service start request is made by the method described in the second embodiment (step S310-3).

  On the other hand, if there is a corresponding record (Yes at step S310-2), the session management server 100 (screen changing unit 134) next checks the status (step S310-4). When the status is “3” (Yes at step S310-5), the information display terminal 550 on the originating side is using the corresponding service, so the session management server 100 (screen changing unit) 134) shifts to a process of transmitting a calling side screen change confirmation instruction to the calling side information display terminal 550 (step S310-6).

  If the status is not “3” (No at Step S310-5) but is “1” or “2” (Yes at Step S310-7), the originating information display terminal 550 is preparing for service use. Since there is a case where the service information is being prepared upon receiving a request from the information display terminal 550 on the called side, the session management server 100 (screen changing unit 134) sleeps the process (step S310-8). The process returns to the process of confirming whether there is a record (step S310-4). If the status is not “4” (No at Step S310-7, No at Step S310-9), the processing is interrupted on the assumption that some error has occurred.

  When the status is “4” (Yes at Step S310-9), the information management terminal 100 (screen changing unit 134) sleeps the process because the originating information display terminal 550 is in the process of interrupting the service. Then (step S310-10), the process returns to the process for checking the status (step S310-4).

[Case where the parameters for calling side access are known]
By the way, in the above, the service providing server 300 designates the calling side access parameters, and the called side information display terminal 550 transmits the calling side access parameters received from the service providing server 300 to the session management server 100. However, the present invention is not limited to this. For example, when the calling side access parameter is embedded in the Web page in advance, the information display terminal 550 on the called side starts the process of Step S307 after pressing the button in Step S301, and displays the Web page. The embedded access-side parameter may be transmitted to the session management server 100.

[Effect of Example 3]
As described above, according to the third embodiment, it is possible to synchronize the screen between the information display terminal on the calling side and the information display terminal on the called side. Also, unlike the conventional method of creating screen change logic on the service providing server side, it is not necessary for the service providing server side to create screen change logic, and service development (and thus provision) can be facilitated. become.

  The service providing system according to the present invention can monitor the connection destination of the information display terminal. For example, when connecting to a site where the information display terminal is not allowed, it is possible to notify the user of the information display terminal of a warning. Therefore, in the following, as a fourth embodiment, a method for notifying a user of an information display terminal of a warning when connecting to a site where the information display terminal is not permitted will be described.

[Processing Procedure by Service Providing System According to Embodiment 4]
The procedure of the process performed by the service providing system according to the fourth embodiment will be described with reference to FIG. FIG. 29 is a sequence diagram for explaining the procedure of the process performed by the service providing system according to the fourth embodiment.

  As shown in FIG. 29, first, when the service providing server 300 notifies the information display terminal 550 of screen information to be displayed on the Web browser of the information display terminal 550 (step S401), the information display terminal 550 The screen information is acquired (step S402). In Example 4, since the information display terminal 550 does not display the screen information acquired at this stage, it is a desirable form from the viewpoint of security, but after displaying the acquired screen information, Procedures may be performed. The latter method will shorten the time to display the screen information. (The latter method is more convenient when the connection destination is allowed as a result.) become).

  Then, the information display terminal 550 (connection destination monitoring function unit 558) sucks out screen information displayed on the Web browser (step S403) and analyzes the URL of the service providing server 300 to which the information display terminal 550 is connected. (Step S404).

  Then, the information display terminal 550 (connection destination monitoring function unit 558) transmits the access destination URL analyzed in step S404, the connection ID between arrival and departure, and the control session information to the session management server 100 (step S405). ).

  On the other hand, the session management server 100 (connection destination warning unit 135) checks whether or not the control session information transmitted from the information display terminal 550 is registered in the control session management table 124 (step S406). Subsequently, it is confirmed whether or not the departure / arrival association ID and the control session information transmitted from the information display terminal 550 are registered in the arrival / departure association ID table 126 (step S407).

  Then, the session management server 100 (connection destination warning unit 135) searches the departure / arrival association ID table 126 using the departure / arrival association ID and the control session information transmitted from the information display terminal 550 as keys, and sets the service ID. Obtain (step S408).

  Subsequently, the session management server 100 (connection destination warning unit 135) searches the contract service information table 122 using the acquired service ID as a key, and searches the URL table (access destination URL, destination URL, etc.) from the contract service information table 122. And the access destination URL transmitted from the information display terminal 550 matches with the URL registered in the URL table (step S409).

  Alternatively, the session management server 100 (connection destination warning unit 135) searches the access allowable URL table 127 and confirms whether or not the URL transmitted from the information display terminal 550 is included (step S409).

  As a result, if the URL transmitted from the information display terminal 550 does not match the URL registered in the URL table or is not included in the access permission URL table 127, the session management server 100 (connection destination warning) The unit 135) notifies the information display terminal 550 that the URL is an unacceptable connection destination (step S410). Then, the information display terminal 550 displays a warning dialog on the Web browser (step S411).

[Effect of Example 4]
As described above, according to the fourth embodiment, when the information display terminal is connected to a site that is not permitted, a warning can be notified to the user of the information display terminal. As a result, the user of the information display terminal does not need to be aware of the connection destination. That is, the user of the information display terminal is notified of a warning even when the information display terminal is connected to a site other than the site that he / she has consciously selected, so that the site other than the selected site You can notice that you are connected to. As a result, the user can avoid or disconnect from an unauthorized site without paying particular attention to the connection destination.

  The service providing system according to the present invention can link communication established by SIP and Web communication performed by taking over the communication. For example, the service can be forcibly terminated when a call established by SIP is disconnected. Therefore, in the following, as a fifth embodiment, a method for forcibly terminating service provision when a call established by SIP is disconnected will be described.

[Processing Procedure by Service Providing System According to Embodiment 5]
A processing procedure performed by the service providing system according to the fifth embodiment will be described with reference to FIG. FIG. 30 is a sequence diagram for explaining the processing procedure by the service providing system according to the fifth embodiment.

  As shown in FIG. 30, first, the SIP proxy 200 (SIP communication control unit 231) controls to perform SIP communication in steps S501 to S502 between both SIP phones 500 (SIP communication unit 504). As a result, in step S503, communication established by SIP between both SIP phones 500 is disconnected.

  Then, the SIP proxy 200 (call session information transmission unit 232) uses disconnection information indicating that communication established by SIP has been disconnected as call session information (in the fifth embodiment, to identify the disconnected communication). Call-ID) is transmitted to the session management server 100 (step S504).

  The session management server 100 (forced disconnection unit 136) searches the control session management table 124 using the Call-ID transmitted from the SIP proxy 200 as a key, and obtains incoming / outgoing control session information (step S505).

  Subsequently, the session management server 100 (forced disconnection unit 136) searches the in-access service management table 125 using the arrival / departure control session information as a key, and deletes the record including the arrival / departure control session information (step S506). .

  The session management server 100 (forced disconnection unit 136) notifies the arrival / departure information display terminal 550 that the communication established by SIP has been disconnected (step S507). At this time, since the information display terminal 550 (connection destination monitoring function unit 558) polls the session management server 100 using the control session information, the session management server 100 (forced disconnection unit 136) The information display terminal 550 is specified using the control session information, and the call disconnection is notified (step S508). The session management server 100 (forced disconnection unit 136) transmits the URL of the HGW 400 together with the call disconnect notification. The URL of the HGW 400 has been notified from the HGW 400 in step S109 in FIG.

  Then, the information display terminal 550 (connection destination monitoring function unit 558) issues a connection instruction to the HGW 400 to the Web browser using the URL of the HGW 400 transmitted from the session management server 100 (step S509). When the information display terminal 550 connects to the HGW 400 (step S510), the HGW 400 generates a call waiting screen (step S511) and transmits the screen to the information display terminal 550 (step S512). Then, a call waiting screen is displayed on information display terminal 550 (step S513).

[Effect of Example 5]
As described above, according to the fifth embodiment, it is possible to link communication established by SIP with Web communication performed by taking over the communication.

  Also, according to the fifth embodiment, unlike the conventional method of creating screen transition logic on the service providing server side, it is not necessary for the service providing server side to create screen transition logic, and service development (and thus provision) is provided. Can be made easier.

  Although the embodiments of the present invention have been described so far, the present invention may be implemented in various different forms other than the above-described embodiments.

[Session management function]
In the above embodiment, the case where the “session management function” is provided in a session management server physically different from the SIP proxy or service providing server has been described, but the present invention is not limited to this. . The present invention can be similarly applied to a case where the “session management function” is provided in the SIP proxy or a case provided in the service providing server.

[Destination monitoring function]
In the above embodiment, the information display terminal includes a general-purpose Web browser, and a “connection destination monitoring function” includes a Java (registered trademark) Script file that operates on the Web browser (transmitted from the session management server). In this way, the method including the “connection destination monitoring function” has been described, but the present invention is not limited to this. The present invention can be similarly applied to a method in which the information display terminal includes a dedicated application, and the dedicated application includes a “connection destination monitoring function” in advance.

[Linkage ID between departure and arrival]
In the above embodiment, the method of using the pseudonym ID issued by the session management server as the “departure / arrival link ID” used when the service providing server controls the Web service in association with each other has been described. It is not limited to this. The present invention can be similarly applied to a method using call session information itself (for example, Call-ID) which is call information. In other words, the “departure / arrival linking ID” means that when the service providing server provides the web service to a plurality of terminals in association with each other, each of the plurality of terminals establishes communication by SIP. As long as the information can be recognized.

[Signed certificate]
In the above embodiment, when the SIP proxy or session management server transmits information to another device, it issues a signed certificate of its own device and stores the information in a verifiable format with the signed certificate attached. Although the transmission method has been described, the present invention is not limited to this. The present invention can be similarly applied to a method of simply transmitting information without attaching a signed certificate. In this case, it is not necessary to verify the information on the information receiving side.

[Polling]
In the above-described embodiments, the method of performing communication using appropriate polling between the information display terminal and the HGW, between the information display terminal and the session management server, etc. has been described, but the present invention is limited to this. Instead of polling, push-type or pull-type communication may be used instead of polling (in this case, access is required only when necessary).

[Terminal configuration]
The service providing system according to the present invention is not limited to the configuration exemplified in the above embodiment. That is, in the service providing system according to the present invention, first, in terms of the configuration on the terminal side, whether or not the HGW is installed on the terminal side, whether the terminal is a separated type of SIP phone and information display terminal, There are options such as whether the SIP phone function and the information display function are integrated. Also, in terms of which device collects call session information, whether the SIP proxy collects call session information, whether the HGW collects call session information, or a terminal (SIP phone or SIP phone function) calls There is an option to collect session information. Further, there is an option of whether to transmit the call session information collected by the SIP proxy to the HGW or to the terminal (SIP phone or SIP phone function). In addition, there are options such as whether the configuration on the calling side and the configuration on the receiving side are the same or different, and options such as whether or not the information display terminal is connected as a terminal under the HGW. The above embodiments show only some combinations of these options, and the present invention is not limited to these configurations. In other words, the present invention can be similarly realized with respect to other configurations by using the above-described method or a known method.

[SIP proxy]
In the above embodiment, a case where a single SIP proxy mediates a SIP signal (including SIP specific signals, types such as INVITE and 200 OK, and parameters such as From and To) is described. However, the present invention is not limited to this. The present invention can be similarly applied to a case where a plurality of SIP proxies mediate a SIP signal and a case where an AS (Application Server) in NGN (Next Generation Network) mediates a SIP signal.

  In addition, among the processes described in this embodiment, all or part of the processes described as being performed automatically can be performed manually, or the processes described as being performed manually can be performed. All or a part can be automatically performed by a known method. In addition, the processing procedure, control procedure, specific name, and information including various data and parameters shown in the above-described document and drawings can be arbitrarily changed unless otherwise specified.

  Each component of each illustrated device is functionally conceptual, and does not necessarily need to be physically configured as illustrated (such as FIG. 2). In other words, the specific form of distribution / integration of each device is not limited to that shown in the figure, and all or a part thereof may be functionally or physically distributed or arbitrarily distributed in arbitrary units according to various loads or usage conditions. Can be integrated and configured. Further, all or any part of each processing function performed in each device may be realized by a CPU and a program analyzed and executed by the CPU, or may be realized as hardware by wired logic.

  The service providing method described in this embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This program can be distributed via a network such as the Internet. The program can also be executed by being recorded on a computer-readable recording medium such as a hard disk, a flexible disk (FD), a CD-ROM, an MO, and a DVD and being read from the recording medium by the computer.

  As described above, in the service providing system, the service providing method, and the service providing program according to the present invention, the service providing server that provides a service on the network to a plurality of terminals connected to the network controls the service. This is useful, and particularly suitable for centralized management by controlling the connection destinations of terminals when providing services based on temporary communication relationships.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram for explaining an overview and features of a service providing system according to a first embodiment. It is a block diagram which shows the structure of a session management server. It is a figure for demonstrating a user contract service management table. It is a figure for demonstrating a contract service information table. It is a figure for demonstrating a competition service management table. It is a figure for demonstrating the session management table for control. It is a figure for demonstrating the in-access service management table. It is a figure for demonstrating the link ID table between arrival and departure. It is a figure for demonstrating an access permission URL table. It is a block diagram which shows the structure of a SIP proxy. It is a block diagram which shows the structure of a service provision server. It is a figure for demonstrating a Web session information management table. It is a figure for demonstrating the structure by the side of a terminal. It is a figure for demonstrating a browser session information management table. FIG. 5 is a sequence diagram (outgoing side) illustrating a processing procedure by the service providing system according to the first embodiment. It is a flowchart which shows the procedure of the service confirmation process which can be utilized. It is a figure for demonstrating a control page. It is a sequence diagram (destination side) which shows the procedure of the process by the service provision system which concerns on Example 1. FIG. FIG. 10 is a sequence diagram (service start request) illustrating a processing procedure performed by the service providing system according to the first embodiment. It is a flowchart which shows the procedure of an access right confirmation process. It is a figure for demonstrating a control page. It is a sequence diagram (after service start) which shows the procedure of the process by the service provision system which concerns on Example 1. FIG. FIG. 10 is a sequence diagram (service end instruction) illustrating a processing procedure performed by the service providing system according to the second embodiment. It is a flowchart which shows an in-access service management table confirmation process. It is a flowchart which shows a competition service check process. FIG. 10 is a sequence diagram (service change) illustrating a processing procedure by the service providing system according to the second embodiment. FIG. 10 is a sequence diagram (screen change) illustrating a processing procedure by the service providing system according to the third embodiment. It is a flowchart which shows a status confirmation process. FIG. 10 is a sequence diagram for explaining a processing procedure by the service providing system according to the fourth embodiment. FIG. 10 is a sequence diagram for explaining a processing procedure by a service providing system according to a fifth embodiment. It is a figure for demonstrating a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Session management server 110 Communication part 120 Storage part 121 User contract service management table 122 Contract service information table 123 Conflict service management table 124 Control session management table 125 Accessing service management table 126 Incoming / outgoing association ID table 127 Access permitted URL table DESCRIPTION OF SYMBOLS 130 Control part 131 Control page generation part 132 Connection destination monitoring part 133 Service start part 134 Screen change part 135 Connection destination warning part 136 Forced disconnection part 200 SIP proxy 210 Communication part 230 Control part 231 SIP communication control part 232 Call session information transmission etc. Unit 300 service providing server 310 communication unit 320 storage unit 321 Web session information management table 330 control unit 331 arrival / departure linking ID reception unit 332 Web set Application information issuing unit 333 Service providing unit 400 HGW
410 SIP communication unit / HTTP communication unit 420 Storage unit 421 Browser session information management table 430 Control unit 431 Call session information etc. acquisition unit 432 SIP phone ID collection unit 433 Information display terminal identification unit 434 Access destination change instruction unit 500 SIP phone 501 Input Unit 502 Output unit 503 Input / output control I / F unit 504 SIP communication unit 550 Information display terminal 551 Input unit 552 Output unit 553 Input / output control I / F unit 554 HTTP communication unit 555 Control unit 556 Service start request unit 557 Service use unit 558 Connection Destination Monitoring Function Unit

Claims (14)

A service providing apparatus that provides a service on the network to a plurality of terminals connected to the network is a service providing system that controls the service,
When a start request for starting the service is received from the terminal, the connection destination of the terminal is controlled by transmitting control information for controlling the terminal to connect to a predetermined connection destination. Connection destination control means for
The terminal
By using the control information transmitted by the connection destination control means, a service request is issued to connect to a service providing apparatus which is a predetermined connection destination and request to use a service provided by the service providing apparatus. A use request transmitting means for transmitting to the providing device;
The service providing apparatus includes:
First communication information acquisition means for acquiring first communication information indicating that another terminal used in combination with the terminal establishes first communication when the use request is received from the terminal;
Second communication information that uniquely identifies second communication performed when the terminal uses the service with the service providing apparatus is added to the first communication information acquired by the first communication information acquisition unit. Second communication information storage means for storing in the second communication information storage means in association with each other;
The first communication information stored in the second communication information storage means indicates that each of the predetermined first communication information is established as the same first communication; Service provision control means for controlling the services provided by using the second communication information stored in the second communication information storage means in association with each communication information, in association with each other;
A service providing system characterized by comprising: The service providing system includes:
Indicates first terminal information indicating a terminal used in combination with the terminal establishing the first communication and / or indicating the other terminal used in combination with the other terminal establishing the first communication. According to the second terminal information, further comprising an available service storage means for storing a service that can be used by the terminal indicated by the first terminal information and / or the terminal indicated by the second terminal information,
The connection destination control means includes
When the start request is received together with the first terminal information and / or the second terminal information, a predetermined value is stored from the available service storage unit based on the first terminal information and / or the second terminal information. Determining the connection destination and controlling the connection destination of the terminal indicated by the first terminal information and / or the terminal indicated by the second terminal information so as to connect to the predetermined connection destination The service providing system according to claim 1. The connection destination control means includes
When receiving the start request together with the first terminal information and / or the second terminal information, a first terminal address indicating the address of the first terminal on the network and / or the second terminal To obtain a second terminal address indicating an address on the network, verify whether the first terminal information is correct information using the first terminal address, and / or the second terminal Whether or not the second terminal information is correct information is verified using the address, and based on the first terminal information and / or the second terminal information determined to be correct information as a result of the verification The service providing system according to claim 2, wherein the connection destination is controlled. The available service storage means includes a terminal indicated by the first terminal information and / or a terminal indicated by the second terminal information, in addition to the first terminal information and / or the second terminal information. The service that can be used according to the arrival / departure flag that identifies whether the terminal is the originating terminal that has transmitted the first communication or the terminating terminal that has received the first communication Remember
The connection destination control means includes
When the start request is received together with the departure / arrival flag in addition to the first terminal information and / or the second terminal information, the arrival / departure is received in addition to the first terminal information and / or the second terminal information. 4. The service providing system according to claim 2, wherein a predetermined connection destination is determined based on a flag, and the connection destination is controlled. The available service storage means is configured such that each of the available services is a call center type service to start a service by connecting the terminal to a service providing apparatus at the same time as an incoming call, or prior to the start of a service. According to the incoming simultaneous connection flag that identifies whether the service is a portal type service that should output a service selection screen to the output unit, and stores the available service,
The connection destination control means includes
The predetermined connection destination is determined based on the incoming call simultaneous connection flag in addition to the first terminal information and / or the second terminal information, and the connection destination is controlled. 4. The service providing system according to any one of 4 above. The available service storage means connects each of the available services to connection destination information to which the originating terminal that has transmitted the first communication is to be connected and the terminating terminal that has received the first communication. Information that differs depending on whether the connection destination information should be provided as the same information or different information, or whether the terminal is a subscriber or non-subscriber of the service. Depending on the connection type identifying whether the service is provided by
The connection destination control means includes
6. The predetermined connection destination is determined based on the connection type in addition to the first terminal information and / or the second terminal information, and the connection destination is controlled. The service providing system according to any one of the above. The connection destination control means includes
When the start request is received together with the first communication identification information for uniquely identifying the first communication, the first communication information is issued as a pseudonym of the first communication identification information, and the first communication information is The service providing system according to claim 1, wherein the connection destination of the terminal is controlled by transmitting the control information to the terminal. The service providing system includes:
Further comprising an allowable connection destination storage means for storing an allowable connection destination to which the terminal is allowed to be connected;
The terminal
It further includes connection destination information transmitting means for acquiring connection destination information to which the terminal is currently connected, and transmitting the connection destination information to the connection destination control means,
The connection destination control means includes
It is determined whether or not the connection destination information transmitted by the connection destination information transmission unit corresponds to the allowable connection destination stored in the allowable connection destination storage unit. If not, the connection is not permitted. The service provision according to any one of claims 1 to 7, further comprising controlling the connection destination of the terminal by transmitting warning information for warning that the terminal is connected first to the terminal. system. The service providing system includes:
Use service storage means for storing connection destination information to which the terminal is currently connected and / or service information indicating a service that the terminal is currently using;
Competing information storage means for storing competing information indicating the competing relationship of each service provided by the service providing device,
The connection destination control means includes
When a change request for requesting to use a service different from the service currently being used is received from the terminal, the terminal determines that the terminal is based on the connection destination information and / or service information stored by the use service storage unit. Determining the service currently used, determining whether the service and the service specified in the change request are in a competitive relationship based on the contention information stored by the contention information storage unit, Based on the determination, further control the connection destination of the terminal,
The terminal
9. The service providing system according to claim 1, further comprising a change request transmitting unit that transmits the change request to the connection destination control unit. The connection destination control means includes
A change request for requesting to change the screen information output to the output unit of the other terminal controlled in association with each other by the service providing apparatus indicates a connection destination to which the other terminal should be connected in changing When received from the terminal together with the connection information for change, the control information for controlling to connect to the predetermined connection destination indicated by the connection information for change is transmitted to the other terminal, so that the other terminal Further control the destination,
The terminal
A change request transmitting means for transmitting the change request together with the change connection destination information to the connection destination control means;
The service providing apparatus includes:
When the change request is received from one terminal, it further comprises a change connection destination information transmitting means for transmitting the change connection destination information to the one terminal,
The service provision control means further controls to change the screen information output to the output unit of the other terminal when connected from the other terminal to the connection destination indicated by the change connection destination information. The service providing system according to any one of claims 1 to 9, wherein: The connection destination control means includes
When disconnection information indicating that the first communication has been disconnected is received from the first communication control device that controls the first communication, use of a service provided by a service providing device that is currently connected And further controlling the connection destination of the terminal by transmitting control information for changing the connection destination so as to terminate the connection to a terminal used in combination with the terminal establishing the first communication. Item 11. The service providing system according to any one of Items 1 to 10. A service providing apparatus for providing a service on the network to a plurality of terminals connected to the network is a service providing method for controlling the service,
When a start request for starting the service is received from the terminal, the connection destination of the terminal is controlled by transmitting control information for controlling the terminal to connect to a predetermined connection destination. Including a connection destination control process to
The terminal
By using the control information transmitted in the connection destination control step, the service request is made to connect to a service providing apparatus that is a predetermined connection destination and request to use the service provided by the service providing apparatus. Including a use request transmission step of transmitting to the providing device,
The service providing apparatus includes:
A first communication information acquisition step of acquiring first communication information indicating that another terminal used in combination with the terminal establishes first communication when the use request is received from the terminal;
The second communication information uniquely identifying the second communication performed when the terminal uses the service with the service providing apparatus is added to the first communication information acquired by the first communication information acquisition step. A second communication information storing step for storing the second communication information in the second communication information storage unit;
The first communication information stored in the second communication information storage unit indicates that each of the predetermined first communication information is established as the same first communication; A service provision control step of controlling a service provided by using each of the second communication information stored in the second communication information storage unit in association with each one of the communication information, in association with each other;
A service providing method characterized by including: A service providing apparatus for providing a service on the network to a plurality of terminals connected to the network is a service providing program for causing a computer to execute a service providing method for controlling the service,
When a start request for starting the service is received from the terminal, the connection destination of the terminal is controlled by transmitting control information for controlling the terminal to connect to a predetermined connection destination. Cause the computer to execute the connection destination control procedure
By using the control information transmitted by the connection destination control procedure, the service request is made to connect to the service providing apparatus which is a predetermined connection destination and request to use the service provided by the service providing apparatus. Causing the computer as the terminal to execute a use request transmission procedure to be transmitted to the providing device;
A first communication information acquisition procedure for acquiring first communication information indicating that another terminal used in combination with the terminal establishes first communication when the use request is received from the terminal;
The second communication information that uniquely identifies the second communication performed when the terminal uses the service with the service providing apparatus is added to the first communication information acquired by the first communication information acquisition procedure. A second communication information storage procedure for storing the second communication information in the second communication information storage unit;
The first communication information stored in the second communication information storage unit indicates that each of the predetermined first communication information is established as the same first communication; A service provision control procedure for controlling a service provided by using each of the second communication information stored in the second communication information storage unit in association with each communication information;
Is executed by a computer as the service providing apparatus. A service providing apparatus that provides a service on the network to a plurality of terminals connected to the network is a service providing system that controls the service,
When a start request for starting the service is received from the terminal, the connection destination of the terminal is controlled by transmitting control information for controlling the terminal to connect to a predetermined connection destination. Connection destination control means for
The terminal
By using the control information transmitted by the connection destination control means, a service request is issued to connect to a service providing apparatus which is a predetermined connection destination and request to use a service provided by the service providing apparatus. A use request transmitting means for transmitting to the providing device;
The service providing apparatus includes:
First communication information acquisition means for acquiring first communication information indicating that the terminal has established first communication when the use request is received from the terminal;
Second communication information that uniquely identifies second communication performed when the terminal uses the service with the service providing apparatus is added to the first communication information acquired by the first communication information acquisition unit. Second communication information storage means for storing in the second communication information storage means in association with each other;
The first communication information stored in the second communication information storage means indicates that each of the predetermined first communication information is established as the same first communication; Service provision control means for controlling the services provided by using the second communication information stored in the second communication information storage means in association with each communication information, in association with each other;
A service providing system characterized by comprising:

Images