JP2005234857A - Terminal communication function extending method, system device and terminal communication extension processing program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal communication function extending method and a system device and a terminal communication function extension processing program for realizing communication session between two terminals respectively registered in two network devices whose connection control conditions are different. <P>SOLUTION: In an incoming SIP server 4, a transmission terminal 1 specified by a connection request message (INVITE message) is provided with a non-registered terminal detection processing part 41 which detects that the transmission terminal 1 is a non-registered terminal which is not under the control of the incoming SIP server 4 and an additional information superimposition processing part 43, when it is detected that the transmission terminal 1 is a non-registered terminal by the non-registered terminal detection processing part 41, which superimposes a connection control program constituted by describing the conditions of connection control to be performed between the incoming SIP server 4 and the registered terminal on a response message(200OK message) to be returned to the transmission terminal 1 in response to the connection request message as additional information to be provided for plug-in to a communication application 13 to be operated by the transmission terminal 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a terminal communication function expansion method and system apparatus, and a terminal communication function expansion processing program, and more specifically, a protocol for performing connection control between a plurality of registered terminals using a message capable of superimposing arbitrary additional information. In a communication network constructed with a plurality of network devices for performing communication, a communication session between two terminals separately registered in two network devices having different connection control conditions among the plurality of network devices is realized. The present invention relates to a terminal communication function expansion method, a terminal communication function expansion system apparatus and a processing program that are directly used for the implementation.

  For example, creation, modification, and deletion of multimedia sessions such as SIP (Session Initiation Protocol) defined in RFC 3261 (RFC: Request For Comment) and SIMPLE (SIP for Instant Messaging and Presence Leveraging Extensions) defined in RFC 2778 In general, when a network device such as a SIP server that performs the protocol is installed in the communication network, a plurality of terminals that want to enjoy services provided by the network device are installed in a communication network. A form in which a dedicated communication application for causing communication with the network device by the protocol is introduced, and each identification information of the plurality of terminals is registered in advance in the network device through the communication application Is taken.

  By adopting the above implementation, the network device transmits and receives a message (method) capable of superimposing arbitrary additional information with a plurality of registered terminals, thereby enabling multimedia Connection control related to the session can be performed.

Further details of the SIP and SIMPLE are disclosed in the following non-patent document 1 (including a link page) that can be browsed on the Internet.
“Softfront-SIP (SIP technology)”, [online], Softfront, Inc. [Search February 16, 2004], Internet <URL: http://www.softfront.co.jp/tech/sip_rfc_draft. html>

  Here, in a conventional SIP / SIMPLE communication network having the above-described form, a user of a terminal registered in a certain network device has a service different from that he / she enjoys (for example, security protection during a communication session). If a user wishes to establish a communication session with another user registered in the other network device using another network device that provides a service with a different encryption method strength for the user, It is necessary to change the terminal settings (communication application settings) or to change the terminal itself (communication application itself) so that it matches the conditions for connection control with other network devices. It was inconvenient.

  By the way, when an application software described in a media file format such as Flash (flash) is operated by a Web browser which is a user terminal application for browsing a Web (Web) page in Internet communication, the Web Flash “plug-ins” for providing additional functions to the browser are downloaded from the Internet and installed in advance so that video and high-quality audio playback, etc. are already installed in the Web browser. It is possible to realize various functions that cannot be realized only by the functions that are present.

Further details of the Flash and plug-in are disclosed in the following references (including link pages) that can be browsed on the Internet.
[References] “Macromedia Flash Player”, [online], Macromedia Corporation, [Search February 16, 2004], Internet <URL: http://www.macromedia.com/jp/software/flashplayer/>

  Then, the technical idea of the plug-in is introduced into the SIP / SIMPLE communication network, and a program for obtaining a function not installed in the terminal (communication application) is downloaded and executed as necessary. For example, it is expected that a communication session with another terminal registered in another network device having different connection control conditions can be realized without changing the setting of the terminal used or the terminal itself.

Here, the main objects to be solved by the present invention are as follows.
That is, a first object of the present invention is to provide a terminal communication function expansion method and system device capable of realizing a communication session between two terminals separately registered in two network devices having different connection control conditions. In addition, a terminal communication function expansion processing program is not provided.

  A second object of the present invention is a terminal capable of realizing a communication session between two terminals separately registered in the two network devices without changing the setting of the use terminal or the terminal itself. A communication function expansion method and system apparatus and a terminal communication function expansion processing program are to be provided.

  Other objects of the present invention will become apparent from the specification, drawings, and particularly the description of each claim.

  In the method of the present invention, in one of the two network devices existing on the communication network, a connection request message specifying the registered terminal under the network device as the called terminal has arrived from the communication network. When detecting that the originating terminal specified by the connection request message is an unregistered terminal not under the network device, and when the originating terminal is detected as an unregistered terminal, A connection control program in which a condition for connection control performed between the network device and the registration terminal is described in a predetermined service description language in a response message to be returned to the calling terminal in response to the connection request message Is superimposed as additional information to be used for plug-in to a communication application running on the calling terminal. Performed sequentially, take characteristic configuration method called.

  In the device according to the present invention, when one of the network devices receives a connection request message specifying a registered terminal under the network device as a called terminal from the communication network, the originating request specified by the connection request message is received. An unregistered terminal detecting means for detecting that the side terminal is an unregistered terminal not under the network device, and the connection when the calling terminal is detected as an unregistered terminal by the unregistered terminal detecting means A connection control program in which a response message to be returned to the calling terminal in response to the request message describes a condition for connection control performed between the network device and the registered terminal in a predetermined service description language , Additional information superimposing means for superimposing as additional information for plug-in to a communication application running on the calling terminal Is provided at the door, characteristic configuration take steps that.

  In the present invention program, when the terminal communication function expansion processing program receives from the communication network a connection request message specifying the registered terminal under the network device as the called terminal on the one network device, A processing procedure for detecting that the originating terminal specified by the connection request message is an unregistered terminal that is not under the network device, and the connection request message when the originating terminal is detected as an unregistered terminal. A connection control program in which a response message to be sent back to the calling terminal in response to the connection control condition described in a predetermined service description language between the network device and the registered terminal Processing procedure to superimpose as additional information for plug-in to the communication application running on the originating terminal The are successively executed, it takes characteristic configuration procedure of.

  More specifically, in solving the problem, the present invention achieves the object by adopting a novel characteristic configuration method, means or procedure from the superordinate concept listed below to the subordinate concept of the present invention. It will be done.

  That is, the first feature of the method of the present invention is constructed by including a plurality of network devices that execute a protocol for controlling connection between a plurality of registered terminals using a message capable of superimposing arbitrary additional information. A communication function expansion method for realizing a communication session between two terminals separately registered in two network devices having different connection control conditions among the plurality of network devices. In one of the two network devices, when a connection request message specifying a registered terminal under the network device as a called terminal arrives from the communication network, the connection request message specifies Processing for detecting that the originating terminal is an unregistered terminal not under the network device, When the calling terminal is detected as the unregistered terminal, a response message to be returned to the calling terminal in response to the connection request message is performed between the network device and the registered terminal. A process of superimposing a connection control program in which connection control conditions are described in a predetermined service description language as the additional information in order to provide a plug-in to a communication application running on the calling terminal is sequentially performed. The configuration of the terminal communication function expansion method is employed.

  The second feature of the method of the present invention is that the calling terminal in the first feature of the method of the present invention extracts the connection control program from the response message returned from the network device via the communication network. Then, the process of introducing the connection control program related to the extraction as a plug-in to the communication application and the process of immediately starting and executing the introduced connection control program on the communication application are sequentially performed. The configuration of the terminal communication function expansion method is employed.

  A third feature of the method according to the present invention is communication established by using a plurality of network devices that perform a protocol for controlling connection between a plurality of registered terminals using a message capable of superimposing arbitrary additional information. In the network, a terminal communication function expansion method for realizing a communication session between two terminals separately registered in two network devices having different connection control conditions among the plurality of network devices, In one of the two network devices, when a connection request message specifying a registered terminal under the network device as an originating terminal arrives from the communication network, it is specified by the connection request message A process of detecting that the called terminal is an unregistered terminal not under the network device, and the called terminal When the terminal is detected as the unregistered terminal, the connection request message to be transferred to the destination terminal includes a condition for the connection control performed between the network device and the registered terminal in a predetermined service description. Adopting a configuration of a terminal communication function expansion method, in which a connection control program described in a language is sequentially performed as a process of superimposing as additional information in order to provide a plug-in to a communication application running on the called terminal It is in.

  According to a fourth aspect of the method of the present invention, the destination terminal according to the third aspect of the method of the present invention executes the connection control program from the connection request message transferred from the network device via the communication network. The process of extracting and introducing the connection control program related to the extraction as a plug-in to the communication application and the process of immediately starting and executing the introduced connection control program on the communication application are sequentially performed. The terminal communication function expansion method is employed.

  A fifth feature of the method of the present invention is that the network device according to the first, second, third or fourth feature of the method of the present invention is RFC 2824 as the service description language for describing the connection control program. The configuration of the terminal communication function expansion method adopting the prescribed CPL is employed.

  On the other hand, the first feature of the device of the present invention is constructed by having a plurality of network devices that execute a protocol for controlling connection between a plurality of registered terminals using a message capable of superimposing arbitrary additional information. A terminal communication function expansion system device for realizing a communication session between two terminals separately registered in two network devices having different connection control conditions among the plurality of network devices. When one of the two network devices receives a connection request message from the communication network in which a registered terminal under the network device is designated as a called terminal, the connection request message Unregistered to detect that the specified originating terminal is an unregistered terminal not under the network device And a response message to be returned to the calling terminal in response to the connection request message when the calling terminal is detected as the unregistered terminal by the unregistered terminal detecting means. In order to provide a connection control program in which a connection control condition performed between a device and the registered terminal is described in a predetermined service description language for plug-in to a communication application running on the originating terminal The terminal communication function expansion system apparatus is configured to include additional information superimposing means for superimposing as information.

  A second feature of the device according to the present invention is that the unregistered terminal detection means in the first feature of the device according to the present invention detects that the originating terminal is the unregistered terminal, so In addition, the terminal communication function expansion system apparatus adopts a registration terminal management table that is set in advance in the network apparatus and can be referred to for the identification information of all the registered terminals.

  A third feature of the device of the present invention is that the additional information superimposing means in the first or second feature of the device of the present invention stores in advance the connection control program to be superimposed as the additional information on the response message. The configuration of the terminal communication function expansion system apparatus having the connection control program storage device is employed.

  A fourth feature of the device of the present invention is that the calling terminal in the first, second or third feature of the device of the present invention is returned from the response message returned from the network device via the communication network. The connection control program is extracted, and the connection control program related to the extraction is introduced as a plug-in into the communication application, and the connection control program introduced into the communication application by the plug-in introduction means The terminal communication function expansion system apparatus has a configuration that includes connection control program execution means that is immediately activated and executed on the communication application.

  A fifth feature of the device of the present invention is communication established by using a plurality of network devices that execute a protocol for controlling connection between a plurality of registered terminals using a message capable of superimposing arbitrary additional information. In the network, a terminal communication function expansion system device for realizing a communication session between two terminals separately registered in two network devices having different connection control conditions among the plurality of network devices, One of the two network devices is specified by the connection request message when a connection request message specifying a registered terminal under the network device as an originating terminal arrives from the communication network. Unregistered terminal detection that detects that the called terminal is an unregistered terminal that is not under the control of the network device. And the connection request message to be transferred to the called terminal when the called terminal is detected as the unregistered terminal by the unregistered terminal detecting means, between the network device and the registered terminal. Additional information superimposing means that superimposes the connection control program described in the connection control condition performed in the above in the predetermined service description language as the additional information to be used for plug-in to the communication application running on the destination terminal The configuration of the terminal communication function expansion system device is provided.

  A sixth feature of the device of the present invention is that the unregistered terminal detection means in the fifth feature of the device of the present invention detects that the called terminal is the unregistered terminal. In addition, the terminal communication function expansion system apparatus adopts a registration terminal management table that is set in advance in the network apparatus and can be referred to for the identification information of all the registered terminals.

  A seventh feature of the device of the present invention is that the additional information superimposing means in the fifth or sixth feature of the device of the present invention stores in advance the connection control program to be superimposed as the additional information on the connection request message. The terminal communication function expansion system apparatus adopts the configuration including the connection control program storage apparatus.

  An eighth feature of the device of the present invention is the connection request message transmitted from the network device via the communication network by the destination terminal in the fifth, sixth or seventh feature of the device of the present invention. The connection control program is extracted from the plug-in introduction means for introducing the connection control program related to the extraction into the communication application as a plug-in, and the connection control program introduced into the communication application by the plug-in introduction means The terminal communication function expansion system apparatus has a configuration that includes connection control program execution means for immediately starting and executing the above on the communication application.

  A ninth feature of the device of the present invention is to describe the connection control program in the first, second, third, fourth, fifth, sixth, seventh or eighth feature of the device of the present invention. The service description language is in the configuration adoption of a terminal communication function expansion system device, which is CPL defined by RFC2824.

  According to a tenth feature of the method of the present invention, the protocol according to the first, second, third, fourth, fifth, sixth, seventh, eighth, or ninth feature of the method of the present invention is defined in RFC 3261. SIP, RFC2778 standard SIMPLE, ITU-T recommendation H.264. The configuration of the terminal communication function expansion system apparatus includes the H.323 protocol and other similar protocols.

  On the other hand, the first feature of the program of the present invention is constructed by including a plurality of network devices that perform a protocol for controlling connection between a plurality of registered terminals using a message capable of superimposing arbitrary additional information. Is a terminal communication function expansion processing program for realizing a communication session between two terminals separately registered in two network devices having different connection control conditions among the plurality of network devices. Then, the terminal communication function expansion processing program receives a connection request message from one of the two network devices specifying the registered terminal under the network device as the called terminal. The originating terminal identified by the connection request message is the network device A processing procedure for detecting that it is an unregistered terminal that is not under its control, and a response message to be returned to the calling terminal in response to the connection request message when the calling terminal is detected as the unregistered terminal In addition, a connection control program in which conditions for the connection control performed between the network device and the registration terminal are described in a predetermined service description language is used as a plug-in to a communication application running on the calling terminal. Therefore, the terminal communication function expansion processing program is adopted to sequentially execute the processing procedure to be superimposed as the additional information.

  According to a second aspect of the present invention program, the terminal communication function expansion processing program according to the first aspect of the present invention program is returned to the originating terminal from the network device via the communication network. The connection control program is extracted from the response message, the processing procedure for introducing the connection control program related to the extraction as a plug-in to the communication application, and the introduced connection control program is immediately started on the communication application The terminal communication function expansion processing program is adopted to sequentially execute the processing procedure to be executed.

  A third feature of the present invention program is a communication constructed by using a plurality of network devices that perform a protocol for controlling connection between a plurality of registered terminals using a message capable of superimposing arbitrary additional information. In the network, a terminal communication function expansion processing program for realizing a communication session between two terminals separately registered in two network devices having different connection control conditions among the plurality of network devices, When the terminal communication function expansion processing program receives a connection request message from one of the two network devices specifying a registered terminal under the network device as an originating terminal from the communication network The called terminal specified by the connection request message is under the control of the network device. The network device and the registration in the connection request message to be transferred to the destination terminal when the destination terminal is detected as the unregistered terminal. A connection control program in which the conditions for the connection control performed with the terminal are described in a predetermined service description language is superimposed as the additional information for use in a plug-in to a communication application running on the destination terminal. A terminal communication function expansion processing program is adopted to sequentially execute the processing procedures.

  According to a fourth aspect of the present invention program, the terminal communication function expansion processing program according to the third aspect of the present invention program is transferred from the network device to the destination terminal via the communication network. Processing procedure for extracting the connection control program from the connection request message and introducing the connection control program related to the extraction into the communication application as a plug-in, and immediately starting the introduced connection control program on the communication application The terminal communication function expansion processing program is adopted to sequentially execute the processing procedures to be executed.

  According to a fifth feature of the program of the present invention, the service description language for describing the connection control program in the first, second, third, or fourth feature of the program of the present invention is a CPL defined by RFC2824. The terminal communication function expansion processing program is employed.

  According to the present invention, since the technical idea of the plug-in is adopted, the communication session between the two terminals separately registered in the two network devices having different connection control conditions is set as the terminal used or the terminal itself. This can be realized without changing.

  Hereinafter, with reference to the accompanying drawings, the configuration of a system to which the present invention is applied will be described first, and then the first and second device examples of the present invention based on the system configuration. The first and second method examples and program examples corresponding to these will be described in order.

(Applicable system configuration)
FIG. 1 is a configuration diagram of a network system as an example to which the present invention is applied.

  As shown in the figure, the network system NS to which the present invention is applied uses a message that can superimpose arbitrary additional information, and performs a plurality of protocols for performing connection control between a plurality of registered terminals. As the network device, two network devices, that is, the originating side SIP server 2 in which the identification information of the originating side terminal 1 that is the source at the time of establishing the multimedia session (communication session) is registered, and the multimedia The identification information of the destination terminal 3 that is the destination of the call when the session is established is registered, and the destination SIP server 2 is configured to have a destination SIP server 4 that has different connection control conditions. And

  It is assumed that the identification information of the destination terminal 3 is not registered in the calling-side SIP server 2 and the identification information of the calling-side terminal 1 is not registered in the called-side SIP server 4. In addition, the calling side and called side terminals 1 and 3 and the calling side and called side SIP servers 2 and 4 have communication applications for realizing the application layer communication functions based on SIP and SIMPLE respectively defined in RFC3261 and RFC2778. (Not shown) are respectively mounted, and thereby the SIP / SIMPLE communication network 5 is configured.

(First device example)
Next, a first apparatus example of the present invention configured based on the network system NS configured as described above will be described.
FIG. 2 is a configuration diagram of a terminal communication function expansion system apparatus according to the first apparatus example of the present invention.

  As shown in the figure, the terminal communication function expansion system device α according to the first device example includes a plug-in introduction processing unit (in the components of the network system NS shown in FIG. A plug-in introduction unit) 11 and a connection control program execution processing unit (connection control program execution unit) 12, and an unregistered terminal detection processing unit (unregistered terminal detection) in the destination SIP server 4. Means) 41, a registered terminal management table 42, an additional information superimposing processing unit (additional information superimposing means) 43, and a connection control program storage device 44. Note that only the conventional basic functions are implemented with respect to the originating side SIP server 2 and the destination side terminal 3 which are other components.

  Of these, first, the unregistered terminal detection processing unit 41 in the called-side SIP server 4 specifies a connection request message (INVITE message) that designates a registered terminal under the same-sided SIP server 4 as the called-side terminal 3 (destination). When the incoming terminal 1 (source) specified by the connection request message is an unregistered terminal that is not subordinate to the incoming SIP server 4 when the incoming message is received from the SIP / SIMPLE communication network 5 It is a functional means for detecting that there is.

  The unregistered terminal detection processing unit 41 is a registered terminal set in advance in the destination SIP server 4 with respect to identification information of all registered terminals under the control of the destination SIP server 4 when detecting the unregistered terminal. It functions to refer to the management table 42.

  On the other hand, when the unregistered terminal detection processing unit 41 detects the originating terminal 1 as an unregistered terminal, the additional information superimposing processing unit 43 responds to the originating terminal 1 in response to the connection request message. In response to a message (such as a 200 OK message; details will be described later), the conditions for connection control performed between the called-side SIP server 4 and the called-side terminal 3 that is the registered terminal are set to, for example, CPL (Call This is a functional unit that superimposes a connection control program (not shown) written in a service description language such as Processing Protocol as additional information to be used for plug-in to the communication application 13 running on the originating terminal 1.

  The additional information superimposing processing unit 43 detects when the calling terminal 1 is detected as an unregistered terminal from the connection control program storage device 44 that stores in advance a connection control program to be superimposed as additional information on the response message. It functions to read the connection control program.

  On the other hand, the plug-in introduction processing unit 11 in the calling terminal 1 extracts a required connection control program from the response message returned from the called SIP server 4 via the SIP / SIMPLE communication network 5, This is a functional means for introducing the connection control program related to the extraction into the communication application 13 as a plug-in.

  The connection control program execution processing unit 12 is a functional unit that immediately starts and executes the connection control program introduced by the plug-in introduction processing unit 11 on the communication application 13.

(First method example)
Next, a first method example implemented by the terminal communication function expansion system device α according to the first device example configured as described above will be described.
FIG. 3 is a sequence chart for explaining the terminal communication function expansion method according to the first method example of the present invention.

  As shown in the figure, in the first example of the method, first, the originating terminal 1 attempting to establish a multimedia session with the terminating terminal 3 uses the communication application 13 installed in itself. By the function, address information of the source (source terminal 1 itself) and destination (destination terminal 3) of the INVITE message is added to the header line (Header-Lines) of the INVITE message that is a connection request message in SIP / SIMPLE. Others are set, and the INVITE message is transmitted to the originating SIP server 2 with which it is registered (ST1).

  Then, the calling-side SIP server 2 refers to the header line of the INVITE message received from the calling-side terminal 1, obtains the destination address information, and registers the called-side terminal 3 specified by the address information. The INVITE message is transferred to the called SIP server 4 (ST2).

  Next, when the receiving side SIP server 4 receives the INVITE message from the calling side SIP server 2, the INVITE message designating the receiving side terminal 3 (registration terminal) under its control as the destination is sent to the SIP / SIMPLE communication network 5. First, the source address information is obtained by referring to the header line of the INVITE message, and the registered terminal management table 42 is referred to by causing the unregistered terminal detection processing unit 41 to function. The process of detecting that the originating terminal 1 specified by the acquired address information is an unregistered terminal that is not under its control, that is, that the incoming INVITE message is a connection request from an unregistered terminal is performed. Execute (ST3).

  When the destination SIP server 4 completes the detection of the above unregistered terminal, the destination SIP server 4 sends the INVITE message received from the source SIP server 2 toward the destination terminal 3 specified by the previously acquired address information. Transfer (ST4).

  On the other hand, when receiving the INVITE message from the incoming SIP server 4, the called terminal 3 refers to the header line of the INVITE message, acquires the address information of the sender, and further introduces the communication introduced to itself. By the function of the application (not shown), the 200 OK message header line of the 200 OK message, which is a response message in SIP / SIMPLE corresponding to the INVITE message, and the destination (outgoing terminal 3 itself) and destination (source) The address information and the like of the side terminal 1) are set, and the 200OK message is transmitted to the destination SIP server 4 with which it is registered (ST5).

  Next, when receiving the 200 OK message from the called terminal 3, the incoming SIP server 4 refers to the header line of the 200 OK message and acquires the address information of the destination, while the additional information superimposing processing unit 43 By functioning, a connection control condition performed between the destination SIP server 4 and the destination terminal 3 that is the registration terminal is described in a service description language such as CPL from the connection control program storage device 44. The connection control program is read out, and the connection control program related to the read-out is added to the message body (Message-Body) of the received 200 OK message for use as a plug-in to the communication application 13 running on the originating terminal 1 A process of superimposing as information is executed (ST6).

  The called-side SIP server 4 sends the 200 OK message (plugin) superimposed with the connection control program to the calling-side SIP server 2 in which the calling-side terminal 1 specified by the previously acquired address information is registered. Further, the originating SIP server 2 refers to the header line of the 200 OK message received from the terminating SIP server 4 and obtains the destination address information, and uses the address information. The 200 OK message (plugin) is transferred to the designated calling terminal 1 (ST8).

  On the other hand, when the calling terminal 1 receives a 200 OK message from the calling SIP server 2 (a 200 OK message (plugin) transferred from the called SIP server 4 via the SIP / SIMPLE communication network 5), the plug-in By causing the introduction processing unit 11 to function, a connection control program is extracted from the message body of the 200 OK message, and a process of introducing the connection control program related to the extraction into the communication application 13 as a plug-in is executed (ST9). Further, by causing the connection control program execution processing unit 12 to function, a process of immediately starting and executing the introduced connection control program on the communication application 13 is executed (ST10).

  As a result, a connection control program for performing connection control performed between the called-side SIP server 4 and the called-side terminal 3 serving as the registration terminal is plugged into the communication application 13 of the calling-side terminal 1. As a result, the connection control program is immediately activated and executed, and thereby, a multimedia media session relating to moving images, high-quality audio, and the like is established between the originating terminal 1 and the terminating terminal 3. (ST11).

  Whether or not to provide post-processing for automatically or manually deleting the connection control program once installed in the communication application 13 is an optional design matter based on the operation policy of the terminal communication function expansion system device α. is there.

(First program example)
As is apparent from the above description of the first apparatus example and the method example, the calling terminal 1 and the called SIP server 4 in the present invention both have the basic functions of a computer, and therefore are intended to be realized by the present invention. The required functions can be configured by a software program.

  That is, when a required terminal communication function expansion processing program is configured, an INVITE message specifying (A) a registered terminal under the callee SIP server 4 as a callee terminal 3 is sent to the callee SIP server 4. A processing procedure (corresponding to ST3) for detecting that the originating terminal 1 specified by the INVITE message is an unregistered terminal that is not under the control of the destination SIP server 4 when arriving from the / SIMPLE communication network 5 (B) When the originating terminal 1 is detected as an unregistered terminal, the destination SIP server 4 and the registered terminal are added to the message body of the 200 OK message to be returned to the originating terminal 1 in response to the INVITE message. A connection control program in which the conditions of connection control performed between the terminal and the terminal are described in a service description language such as CPL is acquired by the originating terminal 1 Description for executing the processing procedure of superimposing the additional information for providing a plug-in to the communication application 13 (corresponding to ST6) sequentially to, it is sufficient to provided to the processing program.

  In addition to the above description, the calling terminal 1 is caused to extract a connection control program from the message body of the 200 OK message returned from the callee SIP server 4 via the SIP / SIMPLE communication network 5; A processing procedure (corresponding to ST9) for introducing the connection control program related to the extraction into the communication application 13 as a plug-in, and (D) a processing procedure for immediately starting and executing the introduced connection control program on the communication application 13. The processing program may be provided with a description for sequentially executing (corresponding to ST10).

(Second device example)
Next, a second example of the present invention configured based on the network system NS configured as described above will be described.
FIG. 4 is a configuration diagram of a terminal communication function expansion system apparatus according to the second apparatus example of the present invention.

  As shown in the figure, the terminal communication function expansion system device β according to the second device example performs unregistered terminal detection processing on the originating SIP server 2 among the components of the network system NS shown in FIG. Unit (unregistered terminal detection means) 21, registered terminal management table 22, additional information superimposing processing section (additional information superimposing means) 23, and connection control program storage device 24. The terminal 3 includes a plug-in introduction processing unit (plug-in introduction unit) 31 and a connection control program execution processing unit (connection control program execution unit) 32. It should be noted that only the conventional basic functions are implemented with respect to the calling side terminal 1 and the called side SIP server 4 which are other components.

  Among these, the unregistered terminal detection processing unit 21 in the originating side SIP server 2 receives a connection request message such as an INVITE message in which a registered terminal under the originating side SIP server 2 is designated as the originating side terminal 1 (source). Functional means for detecting that the destination terminal 3 (destination) specified by the connection request message is an unregistered terminal that is not subordinate to the originating SIP server 2 when it arrives from the SIP / SIMPLE communication network 5 It is.

  The unregistered terminal detection processing unit 21 is a registered terminal set in advance in the originating SIP server 2 for identification information of all registered terminals under the originating SIP server 2 when detecting the unregistered terminal. It functions to refer to the management table 22.

  On the other hand, when the unregistered terminal detection processing unit 21 detects that the called-side terminal 3 is an unregistered terminal, the additional information superimposing processing unit 23 issues a connection request message to be transferred to the called-side terminal 3. A connection control program (not shown) in which conditions for connection control performed between the side SIP server 2 and the originating terminal 1 as its registration terminal are described in a service description language such as CPL is received by the destination terminal 3. It is a functional means to superimpose as additional information for use in plug-in to the communication application 33 operating in

  The additional information superimposing processing unit 23 detects that the called terminal 3 is detected as an unregistered terminal from the connection control program storage device 24 that stores in advance a connection control program to be superimposed as additional information on the connection control message. To read the connection control program.

  On the other hand, the plug-in introduction processing unit 31 in the destination terminal 3 extracts a required connection control program from the connection request message transferred from the originating SIP server 2 via the SIP / SIMPLE communication network 5. This is a functional means for introducing the connection control program related to the extraction into the communication application 33 as a plug-in.

  The connection control program execution processing unit 32 is a functional unit that immediately starts and executes the connection control program introduced by the plug-in introduction processing unit 31 on the communication application 33.

(Second method example)
Next, a second method example implemented by the terminal communication function expansion system device β according to the second device example configured as described above will be described.
FIG. 5 is a sequence chart for explaining a terminal communication function expansion method according to the second method example of the present invention.

  As shown in the figure, in the second example of the method, first, the calling terminal 1 attempting to establish a multimedia session with the called terminal 3 receives a communication application (see FIG. By the function of not shown, in the header line of the INVITE message which is a connection request message in SIP / SIMPLE, the address information of the source (originating terminal 1 itself) and the destination (incoming terminal 3) of the INVITE message, etc. Is set, and the INVITE message is transmitted to the originating SIP server 2 with which it is registered (ST21).

  Next, when the originating SIP server 2 receives the INVITE message from the originating terminal 1, the INVITE message specifying the originating terminal 1 (registration terminal) under its control as the originator is sent from the SIP / SIMPLE communication network 5. First, the destination address information is obtained by referring to the header line of the INVITE message. Further, the registered terminal management table 22 is referred to by causing the unregistered terminal detection processing unit 21 to function. Execute the process of detecting that the called terminal 3 specified by the acquired address information is an unregistered terminal that is not under its control, that is, that the incoming INVITE message is a connection request to an unregistered terminal (ST22).

  Next, when the detection of the above unregistered terminal is completed, the calling side SIP server 2 causes the additional information superimposing processing unit 23 to function, thereby causing the calling side SIP server 2 and its registration from the connection control program storage device 24. A connection control program in which conditions for connection control performed with the originating terminal 1 that is a terminal are described in a service description language such as CPL is read out, and the connection control program related to the reading is read in the received INVITE message. Then, a process of superimposing as additional information is performed to be used for plug-in to the communication application 33 running on the destination terminal 3 (ST23).

  Then, the originating SIP server 2 sends an INVITE message (plugin) superimposed with the connection control program to the terminating SIP server 4 in which the terminating terminal 3 specified by the previously acquired address information is registered. Further, the called-side SIP server 4 refers to the header line of the INVITE message received from the calling-side SIP server 2 to obtain the destination address information, and uses the address information. The INVITE message (plugin) is transferred to the designated destination terminal 3 (ST25).

  On the other hand, when the receiving terminal 3 receives the INVITE message (INVITE message (plugin) transferred from the calling SIP server 2 via the SIP / SIMPLE communication network 5) from the receiving SIP server 4, the INVITE message is received. The address information of the sender is obtained by referring to the header line of the message, and further, a 200 OK message which is a response message in SIP / SIMPLE corresponding to the INVITE message is obtained by the function of the communication application 33 installed in itself. In the header line, address information and the like of the source (the destination terminal 3 itself) and the destination (the source terminal 1) of the 200OK message are set, and the 200OK message is registered as the destination SIP in which it is registered. It transmits toward the server 4 (ST26).

  The called-side SIP server 4 refers to the header line of the 200 OK message received from the called-side terminal 3 to obtain the destination address information, and the calling-side terminal 1 specified by the address information is registered. The 200 OK message is transferred to the originating SIP server 2 that has been called (ST 27), and the originating SIP server 2 refers to the header line of the 200 OK message received from the terminating SIP server 4 and receives the incoming call. The previous address information is acquired, and the 200 OK message is transferred to the calling terminal 1 specified by the address information (ST28).

  Next, when the transmission of the 200 OK message is completed, the called terminal 3 extracts the connection control program from the message body of the INVITE message by causing the plug-in introduction processing unit 31 to function, and A process for introducing the connection control program into the communication application 33 as a plug-in is executed (ST29), and further, the connection control program execution processing unit 32 is made to function so that the introduced connection control program is immediately displayed on the communication application 33. Processing to be started and executed is executed (ST30).

  As a result, a connection control program for performing connection control performed between the originating SIP server 2 and the receiving terminal 1 that is the registration terminal is plugged into the communication application 33 of the called terminal 3. As a result, the connection control program is immediately activated and executed, and thereby, a multimedia media session relating to moving images, high-quality audio, and the like is established between the originating terminal 1 and the terminating terminal 3. (ST31).

  Whether or not to provide post-processing for automatically or manually deleting the connection control program once introduced into the communication application 33 is an optional design matter based on the operation policy of the terminal communication function expansion system device β. is there.

(Second program example)
As is apparent from the above description of the second apparatus example and the method example, the originating SIP server 2 and the terminating terminal 3 in the present invention both have the basic functions of a computer, and therefore are intended to be realized by the present invention. The required functions can be configured by a software program.

  That is, when a required terminal communication function expansion processing program is configured, an INVITE message specifying (a) a registered terminal under the originating SIP server 2 as the originating terminal 1 is sent to the originating SIP server 2. / A processing procedure (corresponding to ST22) for detecting that the destination terminal 3 specified by the INVITE message is an unregistered terminal that is not under the control of the originating SIP server 2 when arriving from the SIMPLE communication network 5; (B) When the called terminal 3 is detected as an unregistered terminal, the message body of the INVITE message to be transferred to the called terminal 3 is set between the calling SIP server 2 and the registered terminal. A communication application that runs on the destination terminal 3 is connected to a connection control program that describes connection control conditions in a service description language such as CPL. The description for sequentially executing a (corresponding to ST23) procedure of superimposing the additional information for providing a plug-in to 33, it is sufficient to provided to the processing program.

  In addition to the above description, the callee terminal 3 is caused to extract the connection control program from the message body of the INVITE message returned from the caller side SIP server 2 via the SIP / SIMPLE communication network 5; A processing procedure (corresponding to ST29) for introducing the connection control program related to the extraction into the communication application 33 as a plug-in, and (d) a processing procedure for immediately starting and executing the introduced connection control program on the communication application 33 A description for sequentially executing (corresponding to ST30) may be included in the processing program.

  As described above, the embodiments of the present invention have been described with reference to the first and second apparatus examples, and the first and second method examples and program examples corresponding to the first and second apparatus examples. However, the present invention is not limited to the above-described means. The present invention is not limited only to the methods and procedures, and can be appropriately changed within the range having the above-described effects.

  For example, in this embodiment, the case where SIP and SIMPLE are applied as an example of a protocol for performing connection control between a plurality of terminals using a message that can superimpose arbitrary additional information has been described. ITU-T (International Telecommunication Union / Telecommunication Standardization Sector) recommendation H.264, which is similar to SIP and SIMPLE. It is also possible to apply the H.323 protocol and other protocols. In this case, the above-described INVITE message and 200 OK message are merely replaced with the connection request message and response message used in the corresponding protocol, and it is necessary to make some changes with respect to the means, method and procedure for embodying the present invention. There is no.

It is a block diagram of a network system as an example to which the present invention is applied. It is a block diagram of the terminal communication function expansion system apparatus which concerns on the 1st apparatus example of this invention. It is a sequence chart for demonstrating the terminal communication function expansion method which concerns on the 1st method example of this invention. It is a block diagram of the terminal communication function expansion system apparatus which concerns on the 2nd apparatus example of this invention. It is a sequence chart for demonstrating the terminal communication function expansion method which concerns on the 2nd method example of this invention.

Explanation of symbols

NS ... Network system (applicable system configuration)
α, β: Terminal communication function expansion system device 1 ... Calling side terminal 2 ... Calling side SIP server 3 ... Called side terminal 4 ... Called side SIP server 5 ... SIP / SIMPLE communication network 11, 31 ... Plug-in introduction processing unit 12, 32 ... Connection control program execution processing unit 13, 33 ... Communication application 21, 41 ... Unregistered terminal detection processing unit 22, 42 ... Registered terminal management table 23, 43 ... Additional information superimposition processing unit 24, 44 ... Connection control program storage device

Claims (20)

In a communication network constructed with a plurality of network devices that perform a protocol for performing connection control between a plurality of registered terminals using a message that can superimpose arbitrary additional information, among the plurality of network devices A terminal communication function expansion method for realizing a communication session between two terminals separately registered in two network devices having different connection control conditions,
In one of the two network devices,
When a connection request message specifying a registered terminal under the network device as a destination terminal arrives from the communication network, the originating terminal identified by the connection request message is not under the network device unregistered A process of detecting that it is a terminal;
When the calling terminal is detected as the unregistered terminal, a response message to be returned to the calling terminal in response to the connection request message is performed between the network device and the registered terminal. A process of superimposing a connection control program in which a connection control condition is described in a predetermined service description language as the additional information to be used for plug-in to a communication application running on the calling terminal is sequentially performed.
The terminal communication function expansion method characterized by the above-mentioned. The calling terminal is
A process of extracting the connection control program from the response message returned from the network device via the communication network, and introducing the connection control program related to the extraction into the communication application as a plug-in;
A process of starting and executing the introduced connection control program immediately on the communication application is executed sequentially.
The terminal communication function expansion method according to claim 1. In a communication network constructed with a plurality of network devices that perform a protocol for performing connection control between a plurality of registered terminals using a message that can superimpose arbitrary additional information, among the plurality of network devices A terminal communication function expansion method for realizing a communication session between two terminals separately registered in two network devices having different connection control conditions,
In one of the two network devices,
When a connection request message specifying a registered terminal under the network device as an originating terminal arrives from the communication network, the destination terminal specified by the connection request message is not under the network device unregistered A process of detecting that it is a terminal;
When the destination terminal is detected as the unregistered terminal, a condition for the connection control performed between the network device and the registered terminal is set in the connection request message to be transferred to the destination terminal. A process of superimposing the connection control program described in the service description language as the additional information in order to provide a plug-in to the communication application running on the destination terminal,
The terminal communication function expansion method characterized by the above-mentioned. The called terminal is
A process of extracting the connection control program from the connection request message transferred from the network device via the communication network, and introducing the connection control program according to the extraction into the communication application as a plug-in;
A process of starting and executing the introduced connection control program immediately on the communication application is executed sequentially.
The terminal communication function expansion method according to claim 3. The network device is:
The CPL defined by RFC2824 is adopted as the service description language for describing the connection control program.
The terminal communication function expansion method according to claim 1, 2, 3, or 4. In a communication network constructed with a plurality of network devices that perform a protocol for performing connection control between a plurality of registered terminals using a message that can superimpose arbitrary additional information, among the plurality of network devices A terminal communication function expansion system device for realizing a communication session between two terminals separately registered in two network devices having different connection control conditions,
One of the two network devices is
When a connection request message specifying a registered terminal under the network device as a destination terminal arrives from the communication network, the originating terminal identified by the connection request message is not under the network device unregistered Unregistered terminal detection means for detecting that the terminal is a terminal;
When the calling terminal is detected as the unregistered terminal by the unregistered terminal detecting means, the network device and the registered terminal are sent in a response message to be returned to the calling terminal in response to the connection request message. An addition that superimposes the connection control program, which describes the conditions of the connection control performed between the communication application and the communication application, as the additional information for use in a plug-in to a communication application running on the calling terminal. Information superimposing means,
The terminal communication function expansion system apparatus characterized by the above-mentioned. The unregistered terminal detecting means includes
In order to detect that the originating terminal is the unregistered terminal, a registration terminal management table that is set in advance in the network device and can be referred to for identification information of all the registered terminals under the network device. Have both
The terminal communication function expansion system apparatus according to claim 6. The additional information superimposing means includes
A connection control program storage device for storing in advance the connection control program to be superimposed as the additional information in the response message;
8. The terminal communication function expansion system apparatus according to claim 6 or 7, The calling terminal is
Plug-in introduction means for extracting the connection control program from the response message returned from the network device via the communication network, and introducing the connection control program according to the extraction into the communication application as a plug-in;
Connection control program execution means for immediately starting and executing the connection control program introduced into the communication application by the plug-in introduction means on the communication application;
9. The terminal communication function expansion system device according to claim 6, 7 or 8. In a communication network constructed with a plurality of network devices that perform a protocol for performing connection control between a plurality of registered terminals using a message that can superimpose arbitrary additional information, among the plurality of network devices A terminal communication function expansion system device for realizing a communication session between two terminals separately registered in two network devices having different connection control conditions,
One of the two network devices is
When a connection request message specifying a registered terminal under the network device as an originating terminal arrives from the communication network, the destination terminal specified by the connection request message is not under the network device unregistered Unregistered terminal detection means for detecting that the terminal is a terminal;
When the destination terminal is detected as the unregistered terminal by the unregistered terminal detection means, the connection request message to be transferred to the destination terminal is performed between the network device and the registered terminal. An additional information superimposing unit that superimposes the connection control program, which describes the connection control conditions in a predetermined service description language, as the additional information to be used for plug-in to a communication application running on the destination terminal; Have
The terminal communication function expansion system apparatus characterized by the above-mentioned. The unregistered terminal detecting means includes
In order to detect that the called terminal is the unregistered terminal, a registered terminal management table that is set in advance in the network device and can be referred to for identification information of all the registered terminals under the network device. Have both
The terminal communication function expansion system device according to claim 10. The additional information superimposing means includes
A connection control program storage device for storing in advance the connection control program to be superimposed as the additional information in the connection request message;
12. The terminal communication function expansion system device according to claim 10 or 11, The called terminal is
Plug-in introduction means for extracting the connection control program from the connection request message transferred from the network device via the communication network, and introducing the connection control program according to the extraction into the communication application as a plug-in; ,
Connection control program execution means for immediately starting and executing the connection control program introduced into the communication application by the plug-in introduction means on the communication application;
The terminal communication function expansion system device according to claim 10, 11 or 12. The service description language for describing the connection control program is:
RFC2824 defined CPL.
14. The terminal communication function expansion system device according to claim 6, 7, 8, 9, 10, 11, 12, or 13. The protocol is
RFC 3261 standard SIP, RFC2778 standard SIMPLE, ITU-T recommendation H.264. Including H.323 protocol and other similar protocols,
15. The terminal communication function expansion system device according to claim 6, 7, 8, 9, 10, 11, 12, 13, or 14. In a communication network constructed with a plurality of network devices that perform a protocol for performing connection control between a plurality of registered terminals using a message that can superimpose arbitrary additional information, among the plurality of network devices A terminal communication function expansion processing program for realizing a communication session between two terminals separately registered in two network devices having different connection control conditions,
The terminal communication function expansion processing program is
In one of the two network devices,
When a connection request message specifying a registered terminal under the network device as a destination terminal arrives from the communication network, the originating terminal identified by the connection request message is not under the network device unregistered A processing procedure for detecting that the device is a device,
When the calling terminal is detected as the unregistered terminal, a response message to be returned to the calling terminal in response to the connection request message is performed between the network device and the registered terminal. And sequentially executing a processing procedure for superimposing a connection control program in which a connection control condition is described in a predetermined service description language as the additional information to be used for plug-in to a communication application running on the calling terminal. ,
A terminal communication function expansion processing program. The terminal communication function expansion processing program is
In the calling terminal,
A processing procedure for extracting the connection control program from the response message returned from the network device via the communication network, and introducing the connection control program related to the extraction into the communication application as a plug-in;
The processing procedure for immediately starting and executing the introduced connection control program on the communication application is sequentially executed.
The terminal communication function expansion processing program according to claim 16, wherein: In a communication network constructed with a plurality of network devices that perform a protocol for performing connection control between a plurality of registered terminals using a message that can superimpose arbitrary additional information, among the plurality of network devices A terminal communication function expansion processing program for realizing a communication session between two terminals separately registered in two network devices having different connection control conditions,
The terminal communication function expansion processing program is
In one of the two network devices,
When a connection request message specifying a registered terminal under the network device as an originating terminal arrives from the communication network, the destination terminal specified by the connection request message is not under the network device unregistered A processing procedure for detecting that the device is a device,
When the destination terminal is detected as the unregistered terminal, a condition for the connection control performed between the network device and the registered terminal is set in the connection request message to be transferred to the destination terminal. A processing procedure for superimposing the connection control program described in the service description language as the additional information in order to provide a plug-in to the communication application running on the destination terminal.
A terminal communication function expansion processing program. The terminal communication function expansion processing program is
In the callee terminal,
A process procedure for causing the connection control program to be extracted from the connection request message transferred via the communication network from the network device, and introducing the connection control program according to the extraction as a plug-in to the communication application;
The processing procedure for immediately starting and executing the introduced connection control program on the communication application is sequentially executed.
The terminal communication function expansion processing program according to claim 18, wherein: The service description language for describing the connection control program is:
RFC2824 defined CPL.
20. The terminal communication function expansion processing program according to claim 16, 17, 18, or 19.

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