JP2004208195A - Multimedia communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform various added calling services (e.g. interactive presentation of data) while maintaining calling between calling terminals. <P>SOLUTION: In a service server S, a control command accepting section S1 transmits or receives various control messages to or from calling terminals U1, U2 so that a session of multimedia communication is opened and closed between the server S and the terminals U1, U2. That means, the section S1 controls the session of the multimedia communication. Also, this session control is performed by the section S1 for an added service section S2 in the server S. The section S2 performs multimedia communication with the terminals U1, U2 using a session opened between the terminals U1, U2. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to multimedia communication systems.
[0002]
[Prior art]
Recently, communication services using SIP (Session Initiation Protocol) such as IP (Internet Protocol) telephones, video conferences, and instant messages have been receiving attention. SIP is an application layer signaling protocol for establishing, changing, and terminating a multimedia session on an IP network, and is currently standardized by RFC3261.
[0003]
For example, Patent Document 1 discloses a content providing terminal that connects a new content receiving terminal to a network in which a content providing terminal and a switching device server are connected, and receives a content list request and a content transmission request from the content receiving terminal. A technology that distributes content to a content receiving terminal, and further, a content receiving terminal that receives a two-way communication request from the content providing terminal transmits the content to the content providing terminal, thereby enabling two-way communication. Is disclosed.
[0004]
[Patent Document 1]
JP-A-2002-073516
[0005]
[Problems to be solved by the invention]
However, in the above-mentioned Patent Document 1, simply connecting the content receiving terminal to the network as the receiving terminal, and then additionally controlling the transmission session enables many terminal connections and two-way communication each time. Only. That is, Patent Literature 1 does not disclose any method for implementing a call session between call terminals that provides various additional call services while maintaining a call in a two-way communication environment.
[0006]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a multimedia communication system capable of performing various additional call services (for example, interactive presentation of materials) while maintaining a call between call terminals. The purpose is to provide.
[0007]
[Means for Solving the Problems]
A multimedia communication system according to the present invention includes a first call terminal, a second call terminal, and a call session for transmitting multimedia data between the first call terminal and the second call terminal. A control session for transmitting a control message between the first call terminal and the second call terminal; and a server controlling the first call terminal. A download session for transmitting a module to the second call terminal is further managed based on a control message transmitted via the session.
[0008]
According to this configuration, it is possible to perform various additional call services (for example, interactive presentation of materials) while maintaining multimedia communication between the call terminals.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0010]
FIG. 1 is a diagram illustrating an example of a configuration of a communication system according to an embodiment of the present invention. Here, a telemarketing service will be described as an example of the additional call service. The communication system shown in FIG. 1 has a call terminal U1 of a salesman on the store side, a call terminal U2 of a customer, and a service server S, which are connected via the Internet.
[0011]
FIG. 2 is a diagram for explaining functions of the call terminal and the service server according to one embodiment of the present invention. A television monitor (TV), a camera, and a microphone are connected to the call terminals U1 and U2, and the call terminals U1 and U2 input and output video to and from the call terminal user, and input devices (not shown) (eg, While receiving a user operation input of various controls using a remote controller, a keyboard, a mouse, and the like, an additional call service using multimedia data is performed between the call terminals U1 and U2 via the service server S. Here, the multimedia data is data including at least one of video, audio, image, and text.
[0012]
The service server S has a control command receiving unit S1 and an additional service unit S2. The control command receiving unit S1 transmits various control messages to the call terminals U1 and U2, or receives various control messages from the call terminals U1 and U2, and performs multimedia between the service server S and the call terminals U1 and U2. Open and close a communication session. That is, the control command receiving unit S1 performs session control of multimedia communication. In the service server S, the control command receiving unit S1 performs the session control on the additional service unit S2.
[0013]
The additional service unit S2 performs multimedia communication with the call terminals U1 and U2 in a session established between the call terminals U1 and U2. Various modules are stored in advance in the additional service unit S2. The additional service unit S2 performs an additional service (here, a telemarketing service) based on various modules for multimedia communication performed in the established session. Examples of the module include a catalog module including electronic catalog data of a specific product and a player function, and a customer questionnaire module.
[0014]
As described above, the call terminals U1 and U2 transmit a control message to the service server S or receive a control message from the service server S, establish a multimedia communication session with the service server S, and Has a function of controlling data communication in this established session. On the other hand, the service server S has a function of controlling opening / closing of a session with the communication terminals U1 and U2 and data communication in the opened session in accordance with a control message received from the communication terminals U1 and U2.
[0015]
Next, a processing sequence of the telemarketing service using the catalog module will be described. 3 to 7 are diagrams showing a processing sequence of a telemarketing service according to one embodiment of the present invention.
[0016]
(1) Call session establishment process (Fig. 3)
First, a process until a session is established between the call terminal U1 and the call terminal U2 will be described with reference to FIG. First, the call terminal U1 of the salesman transmits a message for establishing a call session with the call terminal U2 of the customer to the control command receiving unit S1 of the service server S. This opening message is transmitted from the control command receiving unit S1 to the call terminal U2.
[0017]
In response to the establishment message, the call terminal U2 transmits a ringing bell operation response and an acceptance response when accepting the call to the call terminal U1 via the control command receiving unit S1.
[0018]
In response to this acceptance response, the communication terminal U1 transmits an ACK (Acknowledgement: acknowledgment) to the communication terminal U2 via the control command receiving unit S1.
[0019]
Through this series of processing, a multimedia communication session is established between the call terminal U1 and the call terminal U2, and two-way communication of video data (multimedia data) is started.
[0020]
(2) Module download processing (Fig. 4)
Next, the download processing of the catalog module will be described with reference to FIG. During the communication of the two-way video data (multimedia data), that is, while maintaining the communication of the video data (multimedia data), first, the call terminal U1 sends a download (DL) request message of the catalog module M to the service server. S is transmitted to the communication terminal U2 via the control command receiving unit S1. At this time, the control command receiving unit S1 executes the transfer of the download request message. This request message is composed of “S” indicating the service server S as the server ID, “catalog” as the module ID, and “linked with“ U1 ”” as the service description information.
[0021]
In addition, the catalog module M including the data of the electronic catalog of the automobile and the player function is stored in the additional service unit S2 of the service server S in advance.
[0022]
The communication terminal U2 that has received the download request message from the communication terminal U1 transmits a reception response to the download request and, in the case of accepting the download request, an acceptance response to the communication terminal U1 via the control command receiving unit S1. Thereafter, the call terminal U2 transmits a request message for opening a download session to the control command receiving unit S1. Then, an acceptance response to the establishment request message is transmitted from the control command receiving unit S1 to the telephone terminal U2, whereby a download session is established between the service server S and the telephone terminal U2. The opening request message transmitted from the call terminal U2 to the control command receiving unit S1 includes the module ID “catalog”. In addition, in the consent response transmitted from the control command receiving unit S1 to the telephone terminal U2, "catalog for PC terminal", "catalog for mobile terminal", and "catalog for STB (Set Top Box) terminal" are listed as catalog modules. included.
[0023]
After the establishment of the download session, the communication terminal U2 transmits a download start request instruction to the control command receiving unit S1. In response to the start request instruction, the control instruction receiving unit S1 in the service server S issues a module data transmission instruction to the additional service unit S2. Upon receiving this instruction, the additional service unit S2 transmits the catalog module M to the call terminal U2. If the call terminal U2 is an STB terminal, the module download start request instruction includes the type of the desired catalog module, that is, the “STB terminal catalog” selected from the catalog module list. Then, according to the contents of the start request instruction, the additional service unit S2 transmits the catalog module M for the STB terminal to the telephone terminal U2.
[0024]
When the transmission of the catalog module M is completed, the supplementary service unit S2 notifies the control command receiving unit S1 of the completion. In response to this notification, the control command receiving unit S1 transmits a download session end message to the telephone terminal U2. The call terminal U2 that has received the end message transmits an acceptance response of the end message to the control command receiving unit S1. Thereby, the download session is closed. After the download session is closed, the call terminal U2 transmits a completion response of the download request to the call terminal U1 via the control command receiving unit S1. In response to the completion response, the communication terminal U1 transmits an ACK to the communication terminal U2 via the control command receiving unit S1.
[0025]
In the above description, the catalog module M is stored in advance in the additional service unit S2 of the service server S. However, the catalog module M is stored in the telephone terminal U1 of the salesman or another server connected to the Internet. Is also good. Further, as for the function of the catalog module, for example, in addition to displaying an image photograph or an image video of the product, the catalog module may have a function of simultaneously displaying additional information such as the cost of the product and the number of schools.
[0026]
(3) Control session opening / display control processing (FIG. 5)
Next, the control session opening and display control processing will be described with reference to FIG. After the download of the catalog module M, the call terminal U2 executes the catalog module M to display and output the catalog of the automobile on the television monitor, and opens a catalog control session with the call terminal U1. A request for opening a catalog control session is transmitted to the control command receiving unit S1 of the above. This opening request message includes “next page (Next Page)” and “previous page (Back Page)” as a list of operation instructions of the catalog module.
[0027]
The control command receiving unit S1 that has received the establishment request message from the communication terminal U2 transfers the establishment request message to the communication terminal U1. The call terminal U1 that has received the establishment request transmits an acceptance response to the call terminal U2 via the control command receiving unit S1. In response to this acceptance response, the communication terminal U2 transmits an ACK to the communication terminal U1 via the control command receiving unit S1. As a result, a catalog control session for connecting the call terminals U1 and U2 is established.
[0028]
After the establishment of the catalog control session, the call terminal U1 receives a catalog display operation input (“Next Page” or “Back Page”) from the terminal user (salesman). The display output to the television monitor connected to the call terminal U1 is changed (display the next page or the previous page), and the same display operation performed on the call terminal U1 is performed on the call terminal U2. The display operation instruction is transmitted to the communication terminal U2 through the catalog control session so as to be displayed. For example, when the display operation input of the user of the call terminal U1 is “to the next page (Next Page)”, the content of the display operation instruction transmitted to the call terminal U2 is also “to the next page (Next Page)”. become.
[0029]
The call terminal U2 that has received the display operation instruction changes the display output to the television monitor connected to the call terminal U2 according to the content of the display operation instruction. That is, if the content of the display operation instruction is “to the next page (Next Page)”, the next page of the catalog is displayed.
[0030]
Further, the communication terminal U2 that has received the display operation instruction transmits an acceptance response to the communication terminal U1 via the control command receiving unit S1. In response to this acceptance response, the communication terminal U1 transmits an ACK to the communication terminal U2 via the control command receiving unit S1.
[0031]
In the above description, the catalog control session between the call terminals U1 and U2 is established via the service server S like the call terminal U1 to the service server S and the service server S to the call terminal U2. . However, as shown in FIG. 6, a catalog control session may be established in which the call terminal U1 and the call terminal U2 are directly connected without passing through the service server S, and a display operation instruction may be directly transmitted and received between the call terminals. . Even in this case, it is needless to say that the same operation as performed on the call terminal U2 is also performed on the call terminal U1 by the display operation instruction.
[0032]
Further, the control command receiving unit S1 that has received the establishment request message from the call terminal U2 checks whether the call terminal U2 has already performed multimedia communication with the call terminal U1, and only when the communication terminal U2 is already communicating, does the call terminal U1. May be transferred to the control terminal U1 to prohibit the establishment of a control session with the communication terminal U1 when a call is not in progress. By doing so, it is possible to prevent interlocking operation from a third party.
[0033]
Next, a processing sequence between the control command receiving unit S1 and the additional service unit S2 in the service server S in the above (2) module download processing (FIG. 4) will be described. FIG. 7 is a diagram showing a processing sequence in the service server according to the embodiment of the present invention.
[0034]
The control command receiving unit S1 that has received the download request message from the call terminal U1 transfers the download request message to the call terminal U2.
[0035]
The communication terminal U2 that has received the download request message transmits a reception response to the download request and, in the case of accepting the download request, an acceptance response to the communication terminal U1 via the control command receiving unit S1 (not shown). Thereafter, the call terminal U2 transmits a request message for opening a download session to the control command receiving unit S1. The control command receiving unit S1 that has received the opening request message sends a data transfer preparation request to the additional service unit S2. The additional service unit S2 responds to the data transfer preparation request, and the control command receiving unit S1 that has received the response transmits an acceptance response to the establishment request message to the telephone terminal U2. Thus, a download session is established between the additional service unit S2 and the call terminal U2.
[0036]
After the establishment of the download session, the communication terminal U2 transmits a download start request instruction to the control command receiving unit S1. In response to the start request instruction, the control instruction receiving unit S1 issues a module data transmission instruction to the additional service unit S2. The additional service unit S2 responds to the transmission instruction, and the control command receiving unit S1 that has received the response transmits a download start response to the telephone terminal U2. Further, after responding, the additional service unit S2 transmits module data (catalog module M) to the call terminal U2.
[0037]
When the transmission of the module data (catalog module M) ends, the additional service unit S2 sends a data transmission end message to the control command receiving unit S1. In response to this message, the control command receiving unit S1 transmits a download session end message to the call terminal U2. The call terminal U2 that has received the end message transmits an acceptance response of the end message to the control command receiving unit S1. When receiving the acceptance response of the end message from the call terminal U2, the control command receiving unit S1 sends a response to the data transmission end message received from the additional service unit S2 to the additional service unit S2. Thereby, the download session is closed.
[0038]
After the download session is closed, the call terminal U2 transmits a completion response of the download request to the control command receiving unit S1. The control command receiving unit S1 that has received the completion response from the call terminal U2 transfers the completion response to the call terminal U1.
[0039]
FIG. 8 and FIG. 9 are diagrams showing catalog display examples at the call terminals U1 and U2. 8 and 9, a call terminal U1 is a call terminal installed in a store, and a call terminal U2 is a call terminal installed in a customer's home. In addition, on the television monitor of the call terminal U1, catalog photos 10, 50 of the automobile and the customer's face 20 photographed by the camera of the call terminal U2 are displayed. On the other hand, on the television monitor of the call terminal U2, catalog photographs 30 and 60 of the car and the face 40 of the salesman photographed by the camera of the call terminal U1 are displayed.
[0040]
As shown in FIG. 8, in a state where the same catalog pictures 10 and 30 are displayed in the shop and the customer's house, the call terminal U1 on the shop side inputs the catalog display operation input from the terminal user (salesman) (“Next (Next Page) or “Back Page”), the display on the television monitor is changed to the catalog photograph 50 as shown in FIG. Further, the call terminal U1 transmits a display operation instruction to the call terminal U2 through the catalog control session so that the same display operation as performed at the call terminal U1 is performed at the call terminal U2.
[0041]
Upon receiving the display operation instruction, the call terminal U2 changes the display on the television monitor to the catalog photograph 60 as shown in FIG. 9 according to the content of the display operation instruction. As a result, the same catalog photos 50 and 60 on the next page or the previous page are displayed at the store and the customer's house.
[0042]
Next, a processing flow of the service server S and a processing flow of the call terminals U1 and U2 will be described. FIG. 10 is a diagram showing a processing flow of the service server S, and FIG. 11 is a diagram showing a processing flow of the call terminals U1 and U2.
[0043]
First, a processing flow of the service server S will be described with reference to FIG. Upon receiving the message (S101), the service server S checks the destination of the message (S102).
[0044]
If the destination is addressed to the call terminal (S103), the message is transferred to the call terminal (S104).
[0045]
If the destination is the service server (S105), the contents of the message are checked (S106). If the content of the message is a download session establishment request message (S107), a download session with the requested call terminal is established (S108). If the content of the message is a module download request message (S109), the module download is started to the requesting call terminal (S110).
[0046]
After the processing in S104, S108, and S110, the process proceeds to S111. If the process is completed, the process ends. If the process is continued, the process returns to S101.
[0047]
Next, a processing flow of the call terminals S1 and S2 will be described with reference to FIG. Upon receiving the message or receiving the operation input (S201), each call terminal checks the contents of the message or the operation input (S202).
[0048]
If the operation input is an operation input for starting catalog sharing (S203), a transmission request for a download request message is transmitted (S204). If the content of the message is a module download request message (S205), a download session opening request message is transmitted (S206). If the content of the message is a catalog display operation message (S207), the catalog display is changed (S208). If the operation input is a catalog display operation input (S209), the catalog display is changed (S210).
[0049]
After the processing in S204, S206, S208, and S210, the process proceeds to S211. If the process is completed, the process ends. If the process is continued, the process returns to S201.
[0050]
Next, a configuration example of a message transmitted and received between the call terminal U1 and the service server S and between the service server S and the call terminal U2 will be described. FIG. 12 to FIG. 16 are diagrams illustrating a configuration example of a message according to an embodiment of the present invention. Each message is composed of a message header portion indicating a message transmission source, a message transmission destination, and a message name, and a body portion indicating the content of the message. As for the notation of the transmission source and the transmission destination in the message header portion, the notation of the call terminal, for example, the notation of the call terminal U1 is described as "U1 @ S" in the figure. This explicitly indicates that it is "the call terminal U1 in the domain S managed by the service server S" on the Internet.
[0051]
<Download request processing>
FIG. 12 is an example of a message in which the call terminal U1 requests the call terminal U2 to download a catalog module, and is configured by the following data.
[0052]
The message header indicates the source: “U1”, the destination: “U2”, the content of the message: “catalog module download request”, and the body includes the storage location of the download module: “catalog 01 in service server S”. (File) "and the catalog control session establishment destination:" U1 ".
[0053]
Here, the establishment destination data of the catalog control session indicates the transmission destination of the catalog display operation message shown in FIG. 16, and the download request message shown in FIG. 12 downloads the catalog module and sends it to the communication terminal U1 when the download module is executed. Request that a catalog control session be opened.
[0054]
In particular, when multiple salespersons sell on their own call terminals by not specifying the connection destination data of the control session in the catalog module but specifying it at the time of sending the message, a separate module tailored to each salesman's call terminal There is an advantage that the same catalog module can be used without having to prepare the same.
[0055]
<Download processing>
FIG. 13 shows an example of a message in which the call terminal U2 requests the service server S to open a download session, and is composed of the following data.
[0056]
The message header indicates the source: “U2”, the destination: “S”, and the content of the message: “Download session establishment request”. Note that there is no body part.
[0057]
FIG. 14 shows an example of a message in which the call terminal U2 requests the service server S to start the download of the catalog module, and is configured by the following data.
[0058]
The message header indicates the transmission source: “U2”, the transmission destination: “S”, the content of the message: “download start request”, and the body part indicates the storage location of the download module: “catalog 01 in service server S ( File).
[0059]
Here, since the call terminals are generally not necessarily the same model and the same format, it is desirable to store a module for each model with equivalent catalog contents in the service server S and provide a download module suitable for the call terminal. . At this time, instead of specifying the URL of the module file in the download module storage location data of the catalog module download request message (FIG. 12), a module set name composed of modules for each model is specified, and the A record specifying the module set name is provided in the body of the establishment request message (FIG. 13), and in response to the record, list information including the module file name and its compatible model is received. It may be specified in the download module storage location record of the download start request message (FIG. 14).
[0060]
<Catalog control processing>
FIG. 15 shows an example of a message in which the call terminal U2 requests the call terminal U1 to open a catalog control session, and is configured by the following data.
[0061]
The message header part indicates the transmission source: “U2”, the transmission destination: “U1”, the content of the message: “catalog control session establishment request”, and the body part indicates the catalog control session establishment destination: “U2”, catalog Type of operation instruction: Indicates "NextPage (to next page), BackPage (to previous page), JumpPage [#] (to specified page [page number #])".
[0062]
Here, as a type of the catalog operation command, a catalog which is sequentially arranged and displayed and which allows a page turning operation is assumed, such as "NextPage, BackPage, JumpPage [#]". However, if the operation is for an object of a displayed product, “CloseUp Item1 (enlarged display of product 1)” or the like may be used. In the case of a video showing the movement of a product or a content that performs a simulation operation, “Play (playback)”, “Stop (stop)”, “Open Door1 (open door 1)”, “TurnOn Light1” (light 1) May be lit)).
[0063]
FIG. 16 shows an example of a catalog display operation message from the call terminal U1 to the call terminal U2, which is constituted by the following data.
[0064]
The message header part indicates the transmission source: “U1”, the transmission destination: “U2”, the content of the message: “catalog display operation”, and the body part indicates the catalog operation instruction: “NextPage”.
[0065]
Here, when the terminals U1 and U2 establish a directly connected session to exchange control information, the update of the catalog display operation message between the call terminals U1 and U2 via the service server S is performed according to the catalog control session establishment request. It can be executed by describing the communication conditions of the session directly connected to the body in the message. At this time, the message structure is not limited to the message structure described above, but may be a message in a unique format defined by a module.
[0066]
Next, the configuration of the catalog module will be described. FIG. 17 is a diagram showing a configuration of a catalog module according to one embodiment of the present invention. As shown in FIG. 17, the catalog module includes catalog data and catalog display control player data. The catalog data includes product description data including product codes, performance qualities, usage methods, product photos, and the like of products, and display layout data including product data layout at the time of display, background images, page configurations, and the like. included. The catalog display control player data includes program data for displaying catalog data and performing an operation of changing the display state by a call terminal user's operation or a display operation message from a communication partner's call terminal.
[0067]
After downloading the catalog module as shown in FIG. 17, the internal operation program of the call terminal U2 loads and activates the catalog display control player data, and reproduces and executes the catalog module. FIG. 18 shows a reproduction processing flow of the catalog module in the call terminal U2.
[0068]
First, an initial display screen (first page) of catalog contents is displayed on the television monitor of the call terminal 2 (S301). Next, the call terminal U2 establishes a catalog control session with the call terminal U1 that is the destination of the catalog control session described in the message (S302). Next, a catalog display operation message is received from the call terminal U1, or a catalog display operation input of the user of the call terminal U2 is received, and the contents of the operation message or the display operation input are confirmed (S303).
[0069]
Then, according to the received operation message or the operation input received at the call terminal U2, the display output of the television monitor of the call terminal U2 is changed. For example, if the content of the operation message or the operation input is “NextPage” (S304), the next page is displayed (S305), and if it is “BackPage” (S306), the previous page is displayed (S307), and JumpPage [#] If so (S308), the designated page # is displayed (S309).
[0070]
When a catalog display operation input is received from the user of the call terminal U2 in S303 (S310: own terminal U2), a catalog display operation message is transmitted to the call terminal U1 (S311).
[0071]
Then, upon receiving a catalog display operation message from the call terminal U1 or receiving a catalog display operation input by the user of the call terminal U2, the process returns to S303 and repeats S303 to S312.
[0072]
In the present embodiment, since a catalog having a page configuration is assumed, a page turning operation has been described as a catalog display operation. However, even when a plurality of products are displayed on one screen and the operation of changing the arrangement or the operation of enlarging and displaying a topical product is performed, by providing such a display processing function to the catalog display control player, , An arrangement change operation and an enlarged display operation can be executed.
[0073]
Next, the configuration of a session will be described with reference to FIGS. 19 and 20. As described above, in the present embodiment, the Internet is used while being divided into sessions according to the type of data to be transmitted. That is, a call session for transmitting multimedia data, a control session for transmitting a control message, and a download session for transmitting module data are used separately. As a usage form, a session configuration shown in FIGS. 19 and 20 can be adopted. That is, as shown in FIG. 19, both the control session and the call session can be established between the call terminal U1 and the call terminal U2 via the service server S. In addition, as shown in FIG. 20, a control session can be established between the call terminal U1 and the call terminal U2 via the service server S, and the call session can be established directly without using the service server S. . 19 and 20, the download session is established only between the service server S and the call terminal U2, that is, only between one of the call terminals. It is also possible to establish a download session between. In both cases of FIGS. 19 and 20, in the service server S, the control session is connected to the control command receiving unit S1, and the call session and the download session are connected to the additional service unit S2.
[0074]
Next, a session configuration according to the type of call will be described. Examples of the type of call include a voice call (such as a telephone), a voice / video call (such as a video conference), and a text call (such as an instant message). Hereinafter, a session configuration corresponding to each call will be described.
[0075]
(1) In the case of establishing a call session via the service server S in a voice call (FIG. 21)
In this case, as shown in FIG. 21, voice data is transmitted via the service server S between the call terminal U1 and the call terminal U2. The call terminal U1 includes a call control unit U11 that controls a call according to a control message transmitted through the control session, and a multimedia data control unit U12 that controls multimedia data transmitted through the call session. And
[0076]
(2) In the case of establishing a call session without going through the service server S by voice call (FIG. 22)
In this case, as shown in FIG. 22, voice data is directly transmitted between the call terminal U1 and the call terminal U2 without passing through the service server S.
[0077]
(3) In the case of establishing a call session via the service server S in the audio / video call (FIG. 23)
In this case, as shown in FIG. 23, audio data and video data are transmitted via the service server S between the call terminal U1 and the call terminal U2.
[0078]
(4) A case where a call session is established without a service server S in a voice / video call (FIG. 24)
In this case, as shown in FIG. 24, audio data and video data are directly transmitted between the call terminals U1 and U2 without passing through the service server S.
[0079]
(5) In the case of establishing a call session via the service server S in a character call (FIG. 25)
In this case, as shown in FIG. 25, character data is transmitted between the call terminal U1 and the call terminal U2 via the service server S. In the case of a text call, a keyboard (KB) is connected to the call terminals U1 and U2.
[0080]
(6) In the case of establishing a call session without going through the service server S in a text call (FIG. 26)
In this case, as shown in FIG. 26, character data is directly transmitted between the call terminal U1 and the call terminal U2 without passing through the service server S.
[0081]
(7) In case of transmitting text data by including text data in a control message as a text data transmission message (FIG. 27)
In this case, as shown in FIG. 27, a communication session is not established between the communication terminal U1 and the communication terminal U2, and character data is transmitted via the service server S using the control session. As the character data transmission control function, an SIP instant message transmission function can be used.
[0082]
As described above, according to the present embodiment, a plurality of call terminals and a service server are connected to the Internet and installed, and a message is exchanged between the plurality of call terminals via the service server to download a catalog module, By executing the catalog control session opening / closing process and the module control process, it is possible to realize a telemarketing service that presents interactive materials in addition to multimedia calls between call terminals. As a result, for example, during a sales call with a customer using a calling terminal, a salesman selects an appropriate product catalog and presents it to the customer terminal, or interacts with the customer while turning over the catalog displayed on the customer terminal. A sales system can be realized.
[0083]
【The invention's effect】
As described above, according to the present invention, it is possible to perform various additional call services (for example, interactive presentation of materials) while maintaining a call between call terminals.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a configuration of a communication system according to an embodiment of the present invention.
FIG. 2 is a diagram for explaining functions of a call terminal and a service server according to one embodiment of the present invention;
FIG. 3 is a diagram showing a processing sequence of a telemarketing service according to one embodiment of the present invention;
FIG. 4 is a diagram showing a processing sequence of a telemarketing service according to one embodiment of the present invention.
FIG. 5 is a diagram showing a processing sequence of a telemarketing service according to one embodiment of the present invention.
FIG. 6 is a diagram showing a processing sequence of a telemarketing service according to one embodiment of the present invention.
FIG. 7 is a diagram showing a processing sequence of a telemarketing service according to one embodiment of the present invention.
FIG. 8 is a diagram showing a catalog display example at the call terminal U1 and the call terminal U2 according to one embodiment of the present invention.
FIG. 9 is a diagram showing an example of catalog display at the call terminal U1 and the call terminal U2 according to one embodiment of the present invention.
FIG. 10 is a diagram showing a processing flow of the service server S according to one embodiment of the present invention;
FIG. 11 is a diagram showing a processing flow of the call terminals U1 and U2 according to one embodiment of the present invention.
FIG. 12 is a diagram showing a configuration example of a message according to an embodiment of the present invention;
FIG. 13 is a diagram showing a configuration example of a message according to an embodiment of the present invention.
FIG. 14 is a diagram showing a configuration example of a message according to an embodiment of the present invention.
FIG. 15 is a diagram showing a configuration example of a message according to an embodiment of the present invention;
FIG. 16 is a diagram showing a configuration example of a message according to an embodiment of the present invention;
FIG. 17 is a diagram showing a configuration of a catalog module according to an embodiment of the present invention.
FIG. 18 is a diagram showing a reproduction processing flow of a catalog module in the call terminal U2 according to one embodiment of the present invention.
FIG. 19 shows an example of a session configuration according to an embodiment of the present invention.
FIG. 20 shows an example of a session configuration according to an embodiment of the present invention.
FIG. 21 shows an example of a session configuration according to an embodiment of the present invention.
FIG. 22 shows an example of a session configuration according to an embodiment of the present invention.
FIG. 23 shows an example of a session configuration according to an embodiment of the present invention.
FIG. 24 shows an example of a session configuration according to an embodiment of the present invention.
FIG. 25 shows an example of a session configuration according to an embodiment of the present invention.
FIG. 26 shows an example of a session configuration according to an embodiment of the present invention.
FIG. 27 shows an example of a session configuration according to an embodiment of the present invention.
[Explanation of symbols]
S service server
S1 control command receiving unit
S2 Additional Service Department
U1, U2 call terminal

Claims (6)

A first call terminal;
A second calling terminal;
A server for managing a call session for transmitting multimedia data between the first call terminal and the second call terminal;
A multimedia communication system comprising:
The server comprises:
A control session for transmitting a control message between the first call terminal and the second call terminal;
Further managing a download session for transmitting a module to the second call terminal based on a control message transmitted by the first call terminal via a control session;
A multimedia communication system, comprising: The second call terminal, when receiving a control message transmitted by the first call terminal via a control session, transmits a download session opening request to the server via the control session,
The multimedia communication system according to claim 1, wherein: The second call terminal controls operation of a module according to a control message transmitted by the first call terminal via a control session;
The multimedia communication system according to claim 1, wherein: A server used in the multimedia communication system according to claim 1,
Receiving means for receiving a control message transmitted by the first call terminal or the second call terminal via a control session;
Transmitting means for transmitting multimedia data between the first call terminal and the second call terminal via a call session in accordance with an instruction from the receiving means;
A server comprising: The receiving means, when receiving a control message, opens a download session between the first call terminal and the second call terminal,
5. The server according to claim 4, wherein: A server that manages a call session for transmitting multimedia data between the first call terminal and the second call terminal,
Receiving a module download request transmitted by the first telephone terminal via a control session for transmitting a control message between the first telephone terminal and the second telephone terminal; To the second call terminal,
When receiving an acceptance response to the module download request from the second call terminal via the control session, open a download session for transmitting a module to the second call terminal;
A session management method, comprising:

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