JP5304150B2 - Communication server, communication method, communication program, and communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication server, a communication method, a communication program and a communication system, which control data communication in multi-party call without modifying the existing call control system. <P>SOLUTION: A session information acquiring section 510 in a communication server 50 acquires session information SI relating to a call between each of calling terminals 10_1-10_3 and a voice mixer 30 synthesizing and returning the received voices from a line switching server 40. A correspondence relation management section 520 manages the correspondence relation CR between calling terminals and information processing terminals used by the users U1-U3 on the basis of a telephone number TN of a calling terminal, received from each of the information processing terminals 20_1-20_3. A data communication control section 530 detects calling terminals indirectly connected via the voice mixer 30 based on the session information SI, and controls data communication between the information processing terminals corresponding to the detected calling terminals on the basis of the correspondence relation CR. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a communication server, a communication method, a communication program, and a communication system, and more particularly to a technique for controlling data communication between information processing terminals in conjunction with a call state of a call terminal.

  As a remote collaboration system for remote users to work together via a network, each user can operate the application and send / receive operation information between the applications. Systems have been proposed that simultaneously reference and draw, and send and receive files to and from each other.

  In such a remote collaboration system, a call system in which voice conversation is performed as a means for users to communicate with each other and a data operation system in which data such as materials, diagrams, and web pages are operated in synchronization are linked. A mechanism for realizing multimedia communication such as manipulating data while talking by voice is provided.

  However, telephones have been used for a long time as a telephone system that is generally used, and there is a demand for using telephones as usual for voice calls because of their stability and ease of use. On the other hand, in recent years, it has become easy to link various computer systems with the use of IP telephones, and a remote collaboration system that links an IP telephone system and a data operation system has been proposed. In a remote collaboration system using such a telephone system, the telephone call state is acquired by the data operation system, and the data operation system is changed in accordance with the call state, so that the data operation is performed together with the start of the telephone call. Interlocking processes such as starting the operation of the system or ending the operation of the data operation system at the end of the call can be realized.

  In a general IP telephone system, a telephone used by each user in a circuit switching server is managed by a SIP (Session Initial Protocol) -URI (Uniform Resource Identifier) or a telephone number, and a call state between telephones is managed by a plurality of SIPs. -Managed in units of sessions that indicate associations between URIs or telephone numbers. Each session is given a session ID as an ID that can be uniquely identified. By using this session ID, it is possible to specify a SIP-URI or a telephone number participating in each call session.

  For example, when a user makes a telephone call using a telephone, a new value is generated between the SIP-URI or telephone number assigned to the telephone in the circuit switching server and the SIP-URI or telephone number of the other user's telephone. A call session is created. When the user hangs up, the circuit switching server deletes the call session associated with the call.

  In a general circuit switching server, a call session is associated only with a one-to-one call, and only two telephones can participate in one call session. When performing a multi-party call in which three or more users call simultaneously on such a circuit-switched server, an audio mixer that behaves like a telephone is used. Each user who wants to make a call with three or more people makes a call to the audio mixer using a normal telephone. The circuit-switched server allocates a call session for each call from the telephone to the audio mixer in the same manner as a normal call. At this time, in each call session, one telephone is a voice mixer and the other telephone is a telephone used by a user.

  The audio mixer synthesizes and returns the audio received from each telephone. Each telephone can have conversations with three or more users by simply reproducing the sound transmitted from the sound mixer as in a normal call.

  When a certain user participating in a multi-party call disconnects, the call session between the voice mixer and the telephone that disconnected the call is deleted, and the voice transmission and reception of the user is stopped.

For example, Patent Document 1 describes a communication system that enables voice calls between the same group by grouping voice call terminals by a game server and connecting each group to the same voice mixer.
Special table 2007-523572 JP 2005-333446 A Japanese Patent Laid-Open No. 9-62597

  However, the general circuit switching server described above does not take into account the linkage processing with the data operation system, and when a multi-party call using a voice mixer is performed, each telephone and the voice mixer It only manages information related to the call session between them (hereinafter referred to as session information). Therefore, there is a problem that the data operation system cannot recognize a multi-party call even if session information is acquired from the circuit switching server, and cannot perform the interlocking process.

  Patent Document 2 describes a communication conference system in which each of a plurality of communication terminals connected to a network has a three-party call function. However, in this system, it is necessary that all communication terminals have a special protocol that supports three-party calls. Therefore, the user's request to use the above-described conventional telephone system (telephone and circuit switching server) as it is cannot be satisfied.

  Patent Document 3 describes a communication system in which one management terminal collectively manages voice communication and other data communication between other terminals connected via a network. However, this system also does not use the conventional telephone system as it is. In addition, when a measure for applying the technology related to this system to a conventional telephone system is taken, a complicated and large-scale implementation change such as providing a circuit switching server with a data communication control function is required.

  Accordingly, an object of the present invention is to provide a communication server, a communication method, a communication program, and a communication system capable of controlling data communication in a multiparty call without changing an existing call control system. And

  In order to achieve the above object, a communication server according to an aspect of the present invention synthesizes a received voice with each of the call terminals respectively used by a plurality of users from the circuit switching server and returns the synthesized voice to each call terminal. A session information acquisition unit that acquires session information related to a call with a speech synthesizer terminal, and each user uses based on the identification information of the call terminal received from each of the information processing terminals used by the plurality of users. A correspondence relationship management unit that manages a correspondence relationship between the call terminal and the information processing terminal, and based on the session information, detects a call terminal that is in an indirect call state via the speech synthesis terminal, and the correspondence relationship And a data communication control unit that controls data communication between the information processing terminals corresponding to the detected call terminal.

  In addition, a communication method according to an aspect of the present invention is provided between a call switching terminal used by each of a plurality of users from a circuit switching server and a voice synthesis terminal that synthesizes received voice and returns the voice to each call terminal. Session information related to the telephone call, and based on the identification information of the call terminal received from each of the information processing terminals respectively used by the plurality of users, the correspondence relationship between the call terminal used by each user and the information processing terminal is determined. Managing and detecting a call terminal in an indirect call state via the speech synthesis terminal based on the session information, and between information processing terminals corresponding to the detected call terminal based on the correspondence Control data communication.

  In addition, a communication program according to an aspect of the present invention includes a communication server that synthesizes a received voice with each of a call terminal used by each of a plurality of users from a circuit-switched server, and returns the synthesized voice to each call terminal. A call terminal and information used by each user based on processing for obtaining session information related to a call with the terminal and identification information of the call terminal received from each of the information processing terminals used by each of the plurality of users Based on the process for managing the correspondence relationship between the processing terminals and the session information, a call terminal in an indirect call state via the voice synthesis terminal is detected, and the detected call terminal is detected based on the correspondence relationship. And processing for controlling data communication between information processing terminals corresponding to the above.

  Furthermore, a communication system according to an aspect of the present invention combines a call terminal used by each of a plurality of users, an information processing terminal used by each of the plurality of users, and a received voice from each call terminal. Based on session information regarding each call obtained from the voice synthesis terminal to reply, a circuit switching server for controlling a call between each call terminal and the voice synthesis terminal, and the call exchange terminal, the voice synthesis terminal While detecting a call terminal in an indirect call state, based on the identification information of the call terminal received from each information processing terminal, managing the correspondence between the call terminal and information processing terminal used by each user, A communication server that controls data communication between information processing terminals corresponding to the detected call terminals.

  According to the present invention, it is possible to recognize a multi-party call and control data communication between information processing terminals using session information regarding a one-to-one call for each call terminal. There is no change in the control system.

  Embodiments 1 and 2 of a communication server according to the present invention and a communication system to which the communication server is applied will be described below with reference to FIGS. In the drawings, the same components are denoted by the same reference numerals, and redundant description is omitted as necessary for the sake of clarity.

[Embodiment 1]
FIG. 1 shows a configuration example of a communication system to which a communication server according to the present embodiment is applied. The communication system 1 is generally called telephone terminals 10_1 to 10_3 (hereinafter sometimes collectively referred to as reference numeral 10) and information processing terminals 20_1 to 20_3 (hereinafter collectively referred to as reference numeral 20) used by users U1 to U3, respectively. The voice mixer 30 that synthesizes and returns the voice received from the call terminal 10, the circuit switching server 40 that controls the call between the call terminal 10 and the voice mixer 30, and data between the information processing terminals 20. It is comprised from the communication server 50 which controls communication. Note that four or more call terminals and information processing terminals may be connected to the circuit switching server 40 and the communication server 50, respectively. Two or more audio mixers may be connected to the circuit switching server 40. Furthermore, instead of the audio mixer 30, a call terminal or the like having the same function may be used.

  The communication server 50 includes a session information acquisition unit 510 that acquires session information SI related to a call between the call terminal 10 and the audio mixer 30 from the circuit switching server 40, and a telephone received as identification information of the call terminal 10 from the information processing terminal 20. Based on the number TN, the correspondence relationship management unit 520 that manages the correspondence relationship CR between the call terminals and information processing terminals used by the users U1 to U3, and the indirect call state via the audio mixer 30 based on the session information SI And a data communication control unit 530 for controlling data communication between information processing terminals corresponding to the detected call terminal based on the correspondence relationship CR. In addition to the telephone number TN, for example, a character string composed of alphanumeric characters assigned to each communication terminal can be used as the identification information of the communication terminal 10.

  Here, the above-described data communication control is, as described later, relaying a data message MSG_D transmitted / received between information processing terminals corresponding to a call terminal in an indirect call state, or indirectly. Notifying each of the information processing terminals of the address information of all the information processing terminals corresponding to the call terminals in the call state, thereby causing the data message MSG_D to be directly transmitted and received between the information processing terminals. .

  Further, the call terminal and the audio mixer may be any as long as they can be connected to the circuit switching server. In general, a circuit-switched server is designed so that session information can be acquired from the outside in consideration of monitoring and inspection by an operator. Therefore, when the communication server according to the present embodiment is applied, no change is necessary in the existing call control system.

  Hereinafter, more detailed configuration examples and operation examples of the information processing terminal 20, the circuit switching server 40, and the communication server 50 illustrated in FIG. 1 will be described.

  As shown in FIG. 2, the circuit switching server 40 includes a circuit switching unit 410, a call state storage unit 420, a session information notification unit 430, and a notification target telephone number storage unit 440. The circuit switching unit 410 controls a call between the information processing terminal 10 and the audio mixer 30 and stores the call state in the call state storage unit 420. The session information notification unit 430 detects the storage of the call state in the call state storage unit 420 by the line switching unit 410 or a change thereof, and notifies the communication server 50 as session information SI. The notification target telephone number storage unit 440 stores a telephone number to be notified of the session information SI requested from the communication server 50 (hereinafter referred to as a notification target telephone number). That is, the circuit switching server 40 autonomously notifies the communication server 50 of the session information SI.

  In addition to the configuration shown in FIG. 1, the communication server 50 includes a transmission / reception unit (hereinafter referred to as a server-side transmission / reception unit) 540 that functions as a communication interface with the information processing terminal 20. Furthermore, the session information acquisition unit 510 in the communication server 50 sends a session information request unit 511 that requests the session information notification unit 430 to start notification of the session information SI, and the session information notification unit 430 sends a session. A session information receiving unit 512 that receives the information SI. In addition, the correspondence management unit 520 generates a correspondence CR based on the telephone number TN received from the information processing terminal 20 via the server-side transmission / reception unit 540 and notifies the session information request unit 511 of the notification target. A correspondence relationship generation unit 521 that instructs a telephone number and a correspondence relationship storage unit 522 that stores a correspondence relationship CR are provided. The data communication control unit 530 also combines a session information combining unit 531 that combines the session information SI output from the session information receiving unit 512 and the session information combined by the session information combining unit 531 (hereinafter referred to as a combined session). Refer to the combined information storage unit 532 for storing the information), the session information deletion unit 533 for deleting the session information from the combined information storage unit 532, and the combined session information stored in the combined information storage unit 532. And a call state change detecting unit 534 that detects whether or not the call state between the information processing terminal 20 and the audio mixer 30 has been changed.

  In addition, the information processing terminals 20_1 to 20_3 each have a transmission / reception unit (hereinafter referred to as a client-side transmission / reception unit) 210_1 to 210_3 (hereinafter may be collectively referred to as a reference numeral 210) that functions as a communication interface with the communication server 50. A telephone number acquisition unit 220_1 to 220_3 (hereinafter may be collectively referred to as reference numeral 220) for acquiring a telephone number from the call terminals 10_1 to 10_3, and a telephone number acquired by the telephone number acquisition unit 220_1 to 220_3. Phone number transmitters 230_1 to 230_3 (hereinafter may be collectively referred to as reference numeral 230) that transmit to the communication server 50 via the side transmitter / receivers 210_1 to 210_3, data exchange, file exchange function, chat function, shared whiteboard Provide users with various functions such as functions and document browsing functions Data Communications applications 240_1～240_3 and a (hereinafter occasionally represented by a reference numeral 240). Note that the telephone number acquisition unit 220 may use an input device such as a keyboard for receiving telephone number input from a user, or a circuit that reads a telephone number stored in advance in an internal memory. . Further, the client-side transmission / reception unit 210, the telephone number acquisition unit 220, and the telephone number transmission unit 230 may be implemented as independent applications, and may be interoperated using a general inter-process communication technology. Further, these applications may be downloaded from the communication server 50. That is, a general personal computer or the like can be used for the information processing terminal 20.

  Further, as shown in the drawing, “1001”, “1002”, “1003”, and “2001” are assigned to the telephone terminals 10_1 to 10_3 and the audio mixer 30 as telephone numbers TN. Addresses AD = “192.168.128.1”, “10.17.1.1”, and “10.17.1.2” are assigned to the information processing terminals 20_1 to 20_3, respectively.

  Next, the operation of the present embodiment will be described in detail with reference to FIGS.

  First, the call terminals 10_1 to 10_3 register the telephone numbers TN = “1001”, “1002”, and “1003” in the circuit switching server 40, respectively. The registration method at this time is not particularly limited. It is realized using the H.323 protocol or the like. The audio mixer 30 also registers the telephone number TN = “2001” in the circuit switching server 40 in the same manner as the call terminals 10_1 to 10_3. At this time, since the call has not yet started between the call terminal 10 and the audio mixer 30, nothing is recorded in the call state storage unit 420 in the circuit switching server 40.

  When the information processing terminal 20 is activated by the user, the information processing terminal 20 executes a transmission process of the cooperation information message MSG1 as shown in FIG. 3 (step S1). More specifically, as shown in FIG. 4, first, the telephone number acquisition unit 220 in the information processing terminal 20 acquires the telephone number TN of the telephone terminal 10 used by the user and gives it to the telephone number transmission unit 230 ( Step S101). Next, the telephone number transmission unit 230 acquires the address AD of the information processing terminal 20 (step S102). Then, the telephone number transmission unit 230 generates the cooperation information message MSG1 and transmits it to the communication server 50 via the client side transmission / reception unit 210 (step S103).

  For example, in the case of the information processing terminal 20_1 used by the user U1, the cooperation information message MSG1 shown below is transmitted. This message MSG1 indicates that the call terminal 10_1 with the telephone number TN = “1001” operates in cooperation with the information processing terminal 20_1 with the address AD = “192.168.128.1”.

  MSG1 [TN = 1001 & AD = 192.168.8.18.1]

  Returning to FIG. 3, the communication server 50 that has received the cooperation information message MSG1 executes a transmission process of the session information request message MSG2 (step S2). More specifically, as shown in FIG. 5, first, the server-side transmitting / receiving unit 540 in the communication server 50 receives the message MSG1 and transfers it to the correspondence management unit 520 (step S201). Receiving this, the correspondence generation unit 521 in the correspondence management unit 520 associates the telephone number TN and the address AD described in the message MSG1, and stores them in the correspondence storage unit 522 as a correspondence CR (step S202). . Table 1 below shows an example of the correspondence relationship CR stored in the correspondence relationship storage unit 522.

  In Table 1 above, the call terminal 10_1 with the telephone number TN = “1001” and the information processing terminal 20_1 with the address AD = “192.168.128.1” operate in cooperation, and the telephone number TN = “ The communication terminal 10_2 with 1002 "and the information processing terminal 20_2 with address AD =" 10.17.1.1 "operate in cooperation, and the communication terminal 10_3 with telephone number TN =" 1003 "and address AD = This indicates that the information processing terminal 20_3 of “10.17.1.2” is operating in cooperation.

  Then, the correspondence generation unit 521 requests the session information request unit 511 in the session information acquisition unit 510 to acquire session information related to the telephone number TN described in the cooperation information message MSG1. The session information request unit 511 generates a session information request message MSG2 and transmits it to the circuit switching server 40 (step S203). An example of the message MSG2 is shown below. This message MSG2 requests notification of session information regarding the call terminal 20_1 whose telephone number TN = “1001”.

  MSG2 [TN = 1001]

  Returning to FIG. 3, the circuit switching server 40 that has received the session information request message MSG2 executes a storing process of the telephone number to be notified (step S3). More specifically, as shown in FIG. 6, first, the session information notification unit 430 in the circuit switching server 40 receives the message MSG2 (step S301), and stores the message MSG2 in the notification target telephone number storage unit 440. The telephone number TN to be described is stored (step S302). Table 2 below shows a storage example in the telephone number storage unit 440 to be notified.

  Thereafter, as shown in step S4 of FIG. 3, the call terminal 10 transmits a call start request for designating the audio mixer 30 as an incoming call destination to the circuit switching server 40. Upon receiving this call start request, the circuit switching unit 410 in the circuit switching server 40 calls the voice mixer 30 designated as the destination (step S5). As a result, as shown by a dotted line in FIG. 3, the call terminal 10 and the audio mixer 30 are in a call state.

  At this time, the circuit switching unit 410 executes a session information message transmission process (1) (step S6). More specifically, as shown in FIG. 7, the circuit switching unit 410 stores the call state of the call terminal 10 and the voice mixer 30 in the call state storage unit 420 (step S601). For example, when all of the users U1 to U3 participate in the remote conference and the user U1 (call terminal 10_1) first makes a call to the voice mixer 30, for example, the call state storage unit In 420, the call state is stored as shown in Table 3 below.

  Table 3 above shows that the calling terminal 10_1 having the telephone number = “1001” and the receiving voice mixer 30 having the telephone number = “2001” are in a call (connect). This indicates that the call session ID is “1”. The call session ID may be set to any value as long as it can be uniquely specified.

  Then, the session information notification unit 430 detects that a new call state is stored in the call state storage unit 420 (step S602), and the notification target telephone number storage unit 440 stores the source or destination of the call state. It is confirmed whether or not a telephone number is registered (step S603). If no telephone number is registered, the session information notification unit 430 ends the process. On the other hand, if any telephone number is registered, the session information notification unit 430 generates a session information message MSG3a and transmits it to the communication server 50 (step S604). An example of the message MSG3a is shown below. This message MSG3a is a call state (STATUS) between the communication terminal 10_1 of the caller (FROM) whose telephone number is “1001” and the voice mixer 30 of the callee (TO) whose telephone number is “2001”. Is in a call and the call session ID (SESSION) is “1”.

  MSG3a [STATUS = connect & SESSION = 1 & FROM = 1001 & TO = 2001]

  Returning to FIG. 3, the communication server 50 that has received the session information message MSG3a executes a transmission process (1) of the call state change message MSG4 (step S7). More specifically, as shown in FIG. 8, the session information receiving unit 512 in the communication server 50 receives the message MSG3a in which STATUS = “connect” is set, and transfers the message MSG3a to the session information combining unit 531 (step S31). S701). The session information combining unit 531 extracts the source telephone number and the destination telephone number from the message MSG3a (step S702), and records corresponding to any of the telephone numbers are registered in the combined session information storage unit 532. It is confirmed whether or not there is (step S703).

  If the record is not registered, the session information combining unit 531 newly generates a combined session ID (step S704) and describes it in the message MSG3a in association with the combined session ID in the combined session information storage unit 532. The telephone call state, the caller telephone number, and the destination telephone number are stored (step S705). Table 4 below shows a storage example in the combined session information storage unit 532.

  In Table 4 above, in the call with the call session ID = “1”, the caller terminal 10_1 having the telephone number = “1001” and the destination audio mixer 30 having the telephone number = “2001” communicate with each other. It indicates that the connection session ID is “A1”. The combined session ID may be set to any value as long as it can be uniquely specified.

  The session information combining unit 531 notifies the call state change detecting unit 534 of the combined session ID generated in step S704. The call state change detection unit 534 acquires all the records related to the combined session ID from the combined session information storage unit 532 (step S706). Then, the session information combining unit 531 generates a call state change message MSG4 for the phone number whose call state is “connect” among the phone numbers included in the acquired record (step S707). An example of the message MSG4 is shown below. In this message MSG4, the call terminal 10_1 with the telephone number (P1) = “1001” and the audio mixer 30 with the telephone number (P2) = “2001” participate in the session with the combined session ID = “A1”. Indicates that

  MSG4 [STATUS = connect & SESSION = A1 & P1 = 1001 & P2 = 2001]

  Then, the call state change detection unit 534 registers in the correspondence generation unit 521 the address corresponding to the phone number whose call state is “connect” among the phone numbers included in the record acquired in step S706. Inquire whether or not. The correspondence generation unit 521 searches for the telephone number recorded in the correspondence relationship storage unit 522, and if there is a corresponding telephone number, returns the address corresponding to the telephone number (step S708). For example, when the telephone numbers “1001” and “2001” are searched, the address “192.168.128.1” is returned to the call state change detection unit 534 according to Table 1 above. If there is no corresponding telephone number, the call state change detection unit 534 ends the process.

  Then, the call state change detecting unit 534 transmits the call state change message MSG4 to the information processing terminal having the address acquired in step S708 via the server side transmitting / receiving unit 540 (step S709). For example, the message MSG4 is transmitted to the information processing terminal 20_1 having the address “192, 168.18.1”. Note that the processing of steps S710 to S712 shown in FIG. 8 will be described later.

  Returning to FIG. 3, the information processing terminal 20 that has received the call state change message MSG4 controls the processing of the data communication application (step S8). More specifically, as shown in FIG. 9, first, the client side transmitting / receiving unit 210 in the information processing terminal 20 receives the message MSG4 and transfers it to the telephone number transmitting unit 230 (step S801). The telephone number transmission unit 230 confirms whether or not the telephone number transmitted from the terminal itself is described in the message MSG4 (step S802). If the telephone number is not described, the telephone number transmission unit 230 checks the data communication application 240. An instruction is given to stop the processing (step S803). On the other hand, if the telephone number is described, the telephone number transmission unit 230 instructs the data communication application 240 to perform processing for the other telephone number described in the message MSG4 (step S804). ).

  The data communication application 240 adds the other telephone number to the desired data message MSG_D (see FIG. 1) and transmits it to the communication server 50. Receiving this, the communication server 50 refers to the correspondence CR and transfers the message MSG_D to the information processing terminal corresponding to the other telephone number. The communication server 50 may add the address of the information processing terminal corresponding to the other telephone number to the call state change message MSG4. In this case, the data message MSG_D can be directly transmitted and received between the data communication applications.

  Next, when the user U2 (call terminal 10_2) makes a call to the audio mixer 30, the process of step S601 shown in FIG. 7 is executed, so that the call state storage unit 420 is as shown in Table 5 below. Be changed.

  Then, the processes of steps S602 to S604 are executed, and thus the session information message MSG3a shown below is notified from the circuit switching server 40 to the communication server 50. This message MSG3a indicates that the call state between the caller communication terminal 10_2 (phone number = "1002") and the callee voice mixer 30 (phone number = "2001") is in a call, and the call session Indicates that the ID is “2”.

  MSG3a [STATUS = connect & SESSION = 2 & FROM = 1002 & TO = 2001]

  Then, the processing of steps S701 to S703 shown in FIG. 8 is executed, and thus whether or not a record corresponding to either telephone number = “1002” or “2001” is registered in the combined session information storage unit 532. Is confirmed.

  At this time, as shown in Table 4 above, since the record corresponding to the telephone number = “2001” is already registered, the session information combining unit 531 further transmits the source telephone number = “1001” of the record. In addition, it is confirmed whether or not the destination telephone number = “2001” matches the transmission source telephone number = “1002” and the destination telephone number = “2001” extracted from the session information message MSG3a (step S710). If both caller telephone numbers and both call destination telephone numbers match, the session information combining unit 531 determines that a duplicate message MSG3a has been notified and ends the process.

  Now, since both caller telephone numbers are different from each other, the session information combining unit 531 proceeds to step S711, and acquires the combined session ID = “A1” of the record from the combined session information storage unit 532 (step S711). The session information combining unit 531 then associates the combined session information storage unit 532 with the combined session ID = “A1” as shown in Table 6 below, and creates a new record (call state = “connect”, call session ID). = "2", source telephone number = "1002", destination telephone number = "1003") is added (step S712).

  Then, the call state change detection unit 534 executes Steps S706 to S709 to create and transmit a call state change message MSG4 shown below. In the example of Table 6 above, the message MSG4 includes the information processing terminal 20_1 (address = “192.168.128.1”) corresponding to the call terminal 10_1 (phone number = “1001”) and the call terminal 10_2 (phone). Corresponding to the information processing terminal 20_2 (address = “10.17.1.1”) corresponding to the number = “1002”), that is, the communication terminal in an indirect call state via the audio mixer 30 Transmitted to the information processing terminal. In addition, the message MSG4 below includes the call terminal 10_1 with the telephone number (P1) = “1001” and the audio mixer 30 with the telephone number (P2) = “2001” in the session with the combined session ID = “A1”. , Telephone number (P3) = “1002” indicates that it is participating.

  MSG4 [STATUS = connect & SESSION = A1 & P1 = 1001 & P2 = 2001 & P3 = 1002]

  Accordingly, data communication (relay by the communication server 50 of the data message MSG_D or direct transmission / reception) between the information processing terminals 20_1-20_2 is enabled.

  In Table 6 above, telephone number = “2001” is recorded twice. However, in the above call state change message MSG4, duplicate telephone numbers are combined into one in consideration of the processing load on the information processing terminal 20. ing.

  Finally, when the user U3 (call terminal 10_3) calls the voice mixer 30, the call state storage unit 420 is changed as shown in Table 7 below by the same processing as described above, and the combined session information storage unit 532 is changed as shown in Table 8 below.

  Therefore, the following call state change message MSG4 is transmitted to the information processing terminals 20_1 to 20_3.

  MSG4 [STATUS = connect & SESSION = A1 & P1 = 1001 & P2 = 2001 & P3 = 1002 & P4 = 1003]

  Returning to FIG. 3, the circuit switching unit 410 in the circuit switching server 40 receives the end of the call from the call terminal 10 (step S9), and disconnects the call with the voice mixer 30 (step S10). As a result, as shown by the alternate long and short dash line in FIG.

  At this time, the circuit switching unit 410 executes a session information message transmission process (2) (step S11). More specifically, as shown in FIG. 10, the circuit switching unit 410 deletes the call state between the call terminal 10 and the voice mixer 30 from the call state storage unit 420 (step S1101). Taking the case where the call state storage unit 420 is in the state shown in Table 7 above and the call terminal 10_2 (phone number = “1002”) terminates the call with the audio mixer 30, for example, the call state storage unit 420 Deletes the record corresponding to the call session ID = “2”.

  Then, the session information notification unit 430 detects that the call state has been deleted from the call state storage unit 420 (step S1102), and the notification target telephone number storage unit 440 stores the caller or destination phone number related to the call state. Is registered (step S1103). If no telephone number is registered, the session information notification unit 430 ends the process. On the other hand, if any telephone number is registered, the session information notification unit 430 generates a session information message MSG3b and transmits it to the communication server 50 (step S1104). An example of the message MSG3b is shown below. This message MSG3b indicates that the call with the call session ID = “2” has ended (bye).

  MSG3b [STATUS = bye & SESSION = 2]

  Returning to FIG. 3, the communication server 50 that has received the session information message MSG3b executes a transmission process (2) of the call state change message MSG4 (step S12). More specifically, as shown in FIG. 11, when the session information receiving unit 512 in the communication server 50 receives the message MSG3b in which STATUS = “bye” is set (step S1201), the call session ID is displayed in the message MSG3b. Is specified (step S1202). When the call session ID is specified, the session information receiving unit 512 extracts the call session ID from the message MSG3b and transfers it to the session information deleting unit 533.

  The session information deletion unit 533 checks whether or not a record related to the call session ID is registered in the combined session information storage unit 532 (step S1203). When the corresponding record is not registered in the combined session information storage unit 532, the session information deletion unit 533 ends the process. On the other hand, when the corresponding record is registered in the combined session information storage unit 532, the session information deletion unit 533 changes the call state of the record to “bye” (step S1204). When the session information message MSG3b is received, the combined session information storage unit 532 is changed as shown in Table 9 below.

  Then, the session information deletion unit 533 notifies the call state conversion detection unit 534 of the combined session ID = “A1” of the record whose communication state is changed to “bye”. The call state change detection unit 534 acquires all records related to the combined session ID from the combined session information storage unit 532 (step S1205). Then, the call state change detecting unit 534 generates a call state change message MSG4 for the telephone number whose call state is “connect” among the telephone numbers included in the acquired record (step S1206). An example of the message MSG4 is shown below. This message MSG4 does not include the telephone number = “1002” whose call state is “bye”.

  MSG4 [STATUS = connect & SESSION = A1 & P1 = 1001 & P2 = 2001 & P3 = 1003]

  Then, the call state change detection unit 534 inquires of the correspondence generation unit 521 whether or not an address corresponding to the telephone number included in the record acquired in step S1205 is registered. The correspondence generation unit 521 searches for the telephone number recorded in the correspondence relation storage unit 522, and if there is a corresponding telephone number, returns the address corresponding to the telephone number (step S1207). In the example of Table 9, the addresses “192.168.128.1”, “10.17.1.1”, and “10.17.1.2” are returned to the call state change detection unit 534.

  Then, the call state change detecting unit 534 transmits the call state change message MSG4 to the information processing terminal having the address acquired in step S1207 via the server side transmitting / receiving unit 540 (step S1208). In the example of Table 9 above, the call state change message MSG4 is transmitted to each of the information processing terminals 20_1 to 20_3.

  Finally, the call state change detection unit 534 deletes the record whose communication connection state is “bye” from the combined session information storage unit 532 (step S1209).

  Returning to FIG. 3, the information processing terminal 20 that has received the call state change message MSG4 executes steps S801 to S804 shown in FIG. When the message MSG4 is received, the information processing terminal 20_2 does not include the telephone number = “1002” transmitted from the own terminal, and stops the processing of the data communication application 240_2. Since the information processing terminals 20_1 and 20_3 include the telephone numbers = “1001” and “1003” transmitted from the own terminal in the message MSG4, respectively, the processing for the other telephone numbers “1003” and “1001” included in the message MSG4 (That is, data communication between the information processing terminals 20_1 and 20_3).

[Embodiment 2]
In this embodiment, the circuit switching server notifies the session information when an inquiry is made from the outside (communication server), unlike the case where the circuit switching server autonomously notifies the session information as in the first embodiment. Deal with cases that are simple.

  More specifically, the circuit switching server 40 shown in FIG. 12 replaces the session information notification unit 430 and the notification target telephone number storage unit 440 shown in FIG. 2 in response to an inquiry from the communication server 50. An inquiry reception unit 450 that notifies the session information recorded in the storage unit 420 is provided.

  Correspondingly, the communication server 50 according to the present embodiment keeps constant session information regarding the telephone terminal whose telephone number is managed by the correspondence management unit 520 instead of the session information request unit 511 shown in FIG. A session information inquiry unit 513 for inquiring at time intervals is provided. Here, a fixed time interval may be used for the session information inquiry time interval by a program. Alternatively, the time interval stored in a file or memory may be read and used. In this case, the operator of the communication server 50 can change / adjust the time interval.

  Next, the operation of the present embodiment will be described. Note that the registration processing of the telephone numbers of the call terminal 20 and the audio mixer 30 to the circuit switching server 40 and the transmission processing of the cooperation information message by the information terminal 20 (see FIG. 4) are the same as in the first embodiment. The description is omitted.

  The session information inquiry unit 513 in the communication server 50 replaces the process of step S203 shown in FIG. 5 (generation / transmission of the session information request message MSG2) with all the telephones stored in the correspondence storage unit 522. In addition to acquiring the number, the inquiry information 450 in the circuit switching server 40 is inquired for session information of each telephone number at regular time intervals. The inquiry method at this time is not particularly limited, but may be realized using, for example, SQL (Structured Query Language), or may be realized using a network interface that the circuit switching server 40 has uniquely.

  If the session information inquiry unit 513 can acquire session information regarding the telephone number inquired from the inquiry reception unit 450, the session in which STATUS = “connect” is set in the same manner as in step S604 illustrated in FIG. The information message MSG3a is generated and transmitted to the session information receiving unit 512.

  For example, a session information inquiry regarding the telephone number = “1001” (communication terminal 20_1) is performed, and the session information with the telephone number = “2001” (voice mixer 30) is acquired with the call session ID = “1”. If it is possible, the session information inquiry unit 513 generates the following session information message MSG3a.

  MSG3a [STATUS = connect & SESSION = 1 & FROM = 1001 & TO = 2001]

  Since the subsequent processing is the same as that of the first embodiment, the description thereof is omitted.

  On the other hand, when the session information regarding the telephone number inquired from the inquiry reception unit 450 cannot be acquired, the session information inquiry unit 513 generates a session information message MSG3c in which STATUS = “bye” is set, and receives the session information. To the unit 512.

  For example, when the session information inquiry about the telephone number = “1002” (communication terminal 20_2) is executed but cannot be acquired, the session information inquiry unit 513 generates the session information message MSG3c as follows.

  MSG3c [STATUS = by & PHONE = 1002]

  As shown in FIG. 13, the session information receiving unit 512 first receives a session information message MSG3c in which STATUS = “bye” is set (step S1301). Then, the session information receiving unit 512 extracts a telephone number from the message MSG3c (step S1302), and searches the combined session information storage unit 532 for a record related to the telephone number (step S1303). If no record related to the telephone number is found, the session information receiving unit 512 ends the process.

  On the other hand, when a record related to the telephone number is retrieved, the session information receiving unit 512 extracts the call session ID from the record and transfers it to the session information deleting unit 533 (step S1304). The subsequent processing is the same as steps S1203 to S1209 shown in FIG.

  As described above, even when a simple circuit switching server is used, the communication server can control data communication between information processing terminals.

  Note that the present invention is not limited to the above-described embodiments, and it is apparent that various modifications can be made by those skilled in the art based on the description of the scope of the claims. For example, each process of the communication server shown in the above embodiment can be provided as a program for causing a computer to execute the processes.

It is the block diagram which showed the example of schematic structure of Embodiment 1 of the communication system which concerns on this invention. It is the block diagram which showed the detailed structural example of Embodiment 1 of the communication system which concerns on this invention. It is the sequence diagram which showed the example of whole operation | movement of Embodiment 1 of the communication system which concerns on this invention. It is the flowchart figure which showed the example of a transmission process of the cooperation information message in Embodiment 1 of the communication system which concerns on this invention. It is the flowchart figure which showed the example of a transmission process of the session information request message in Embodiment 1 of the communication system which concerns on this invention. It is the flowchart figure which showed the memory processing example of the telephone number for notification in Embodiment 1 of the communication system which concerns on this invention. It is the flowchart figure which showed an example of the transmission process of the session information message in Embodiment 1 of the communication system which concerns on this invention. It is the flowchart figure which showed an example of the transmission process of the call state change message in Embodiment 1 of the communication system which concerns on this invention. It is the flowchart figure which showed the example of process control of the application for data communications in Embodiment 1 of the communication system which concerns on this invention. It is the flowchart figure which showed the other example of the transmission process of the session information message in Embodiment 1 of the communication system which concerns on this invention. It is the flowchart figure which showed the other example of the transmission process of the call status change message in Embodiment 1 of the communication system which concerns on this invention. It is the block diagram which showed the detailed structural example of Embodiment 2 of the communication system which concerns on this invention. It is the flowchart figure which showed the example of transmission processing of the call state change message in Embodiment 2 of the communication system which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Communication system 10 Call terminal 20 Information processing terminal 30 Audio mixer 40 Line switching server 50 Communication server 210 Client side transmission / reception part 220 Telephone number acquisition part 230 Telephone number transmission part 240 Data communication application 410 Line switching part 420 Call state storage part 430 Session information notification unit 440 Notification target telephone number storage unit 450 Inquiry reception unit 510 Session information acquisition unit 511 Session information request unit 512 Session information reception unit 513 Session information inquiry unit 520 Correspondence relationship management unit 521 Correspondence relationship generation unit 522 Correspondence relationship Storage unit 530 Data communication control unit 531 Session information storage unit 532 Combined session information storage unit 533 Session information deletion unit 534 Call state change detection unit 540 Server side transmission / reception unit SI session information TN Phone AD address CR correspondence MSG_D data message MSG1 cooperation information message MSG2 session information request message MSG3a~MSG3c session information message MSG4 call state change message

Claims (24)

A session information acquisition unit for acquiring session information relating to a call between each of the call terminals respectively used by a plurality of users and a voice synthesis terminal that synthesizes the received voice and returns the call to each call terminal from the circuit switching server; ,
A correspondence management unit that manages the correspondence between the call terminal used by each user and the information processing terminal based on the identification information of the call terminal received from each of the information processing terminals used by each of the plurality of users;
Based on the session information, a call terminal in an indirect call state via the voice synthesis terminal is detected, and data communication between information processing terminals corresponding to the detected call terminal is performed based on the correspondence relationship. A data communication control unit for controlling ,
The session information includes identification information of a call terminal that is a call source, identification information of a voice synthesis terminal that is a call destination, and call state information that indicates whether the call terminal and the voice synthesis terminal are in a call state. ,
In the session information acquired by the session acquisition unit, the data communication control unit transmits the session information indicating that the identification information of the voice synthesis terminal matches and the call state information is in a call state. Detecting all call terminals including identification information as call terminals in the indirect call state,
Communication server. A session information acquisition unit for acquiring session information relating to a call between each of the call terminals respectively used by a plurality of users and a voice synthesis terminal that synthesizes the received voice and returns the call to each call terminal from the circuit switching server; ,
A correspondence management unit that manages the correspondence between the call terminal used by each user and the information processing terminal based on the identification information of the call terminal received from each of the information processing terminals used by each of the plurality of users;
Based on the session information, a call terminal in an indirect call state via the voice synthesis terminal is detected, and data communication between information processing terminals corresponding to the detected call terminal is performed based on the correspondence relationship. A data communication control unit for controlling,
The session information includes identification information of a calling terminal in a call state and identification information of a destination voice synthesis terminal,
In the session information acquired by the session acquisition unit, the data communication control unit converts all the call terminals whose identification information is included in the session information that matches the identification information of the voice synthesis terminal as the indirect Detect as a call terminal in a typical call state,
Communication server. In claim 1 or 2 ,
The circuit-switched server autonomously outputs the session information;
The communication server, wherein the session information acquisition unit requests the circuit switching server to output only session information related to a call terminal from which the identification information has been received by the correspondence management unit. In claim 1 or 2 ,
The communication server, wherein the session information acquisition unit acquires, from the circuit switching server, session information relating to a call terminal for which the identification information has been received by the correspondence management unit, at regular time intervals. In any one of Claims 1-4 ,
The data communication control unit notifies identification information of the detected call terminal to each information processing terminal corresponding to the call terminal, and data transmitted and received between the information processing terminals based on the notified identification number A communication server characterized by relaying. In any one of Claims 1-4 ,
The data communication control unit notifies each of the information processing terminals of the address information of all the information processing terminals corresponding to the detected call terminal, so that the data is directly transmitted and received between the information processing terminals. A communication server characterized by that. In claim 1 ,
In the session acquisition unit, the data communication control unit acquires identification information of one of the detected call terminals as a caller, and acquires session information indicating that the call state information is not in a call state A communication server that determines that the one call terminal has transitioned from the indirect call state to the non-call state. In claim 2 ,
When the session information including the identification information of one call terminal among the detected call terminals as a transmission source is not acquired by the session acquisition unit, the data communication control unit receives the indirect call A communication server that judges that a transition has been made from a typical call state to a non-call state. In claim 7 or 8 ,
The data communication control unit notifies identification information of other call terminals other than the one call terminal among the detected call terminals to each information processing terminal corresponding to the detected call terminal, A communication server that relays data transmitted and received between information processing terminals corresponding to the other call terminals based on the notified identification number. In claim 7 or 8 ,
The data communication control unit sends address information of an information processing terminal corresponding to another calling terminal other than the one calling terminal among the detected calling terminals to each information processing terminal corresponding to the detected calling terminal. A communication server characterized in that data is directly transmitted and received between information processing terminals corresponding to the other call terminals. From the circuit-switched server, obtain session information regarding a call between each of the call terminals used by each of the plurality of users and a voice synthesis terminal that synthesizes the received voice and sends it back to each call terminal;
Based on the identification information of the call terminal received from each of the information processing terminals respectively used by the plurality of users, managing the correspondence between the call terminal and the information processing terminal used by each user,
Based on the session information, a call terminal in an indirect call state via the voice synthesis terminal is detected, and data communication between information processing terminals corresponding to the detected call terminal is performed based on the correspondence relationship. control and,
The session information includes identification information of a call terminal that is a call source, identification information of a voice synthesis terminal that is a call destination, and call state information that indicates whether the call terminal and the voice synthesis terminal are in a call state. All the call terminals whose identification information is included in the session information indicating that the identification information of the speech synthesis terminal matches and the call state information is in a call state in the acquired session information. Is detected as a call terminal in the indirect call state,
Communication method. From the circuit-switched server, obtain session information regarding a call between each of the call terminals used by each of the plurality of users and a voice synthesis terminal that synthesizes the received voice and sends it back to each call terminal;
Based on the identification information of the call terminal received from each of the information processing terminals respectively used by the plurality of users, managing the correspondence between the call terminal and the information processing terminal used by each user,
Based on the session information, a call terminal in an indirect call state via the voice synthesis terminal is detected, and data communication between information processing terminals corresponding to the detected call terminal is performed based on the correspondence relationship. Control
When the session information includes identification information of a caller terminal that is in a call state and identification information of a destination voice synthesis terminal, the identification information of the voice synthesis terminal is included in the acquired session information. Detecting all call terminals whose identification information is included in the matching session information as a caller as call terminals in the indirect call state;
Communication method. In claim 11 or 12,
When the circuit switching server autonomously outputs the session information, the circuit switching server requests the circuit switching server to output only the session information related to the call terminal that has received the identification information. In claim 11 or 12,
A communication method, comprising: acquiring session information about a call terminal that has received the identification information from the circuit switching server at regular time intervals. In any one of claims 11 to 14,
The identification information of the detected call terminal is notified to each information processing terminal corresponding to the call terminal, and data transmitted and received between the information processing terminals is relayed based on the notified identification number. Communication method. In any one of claims 11 to 14,
A communication method characterized in that address information of all information processing terminals corresponding to the detected call terminal is notified to each of the information processing terminals, and data is directly transmitted and received between the information processing terminals. . In claim 11 ,
When the session information indicating that the call state information is not in a call state is obtained including identification information of one call terminal among the detected call terminals as a transmission source, the one call terminal is indirect A communication method characterized in that it is determined that a transition has been made from a non-calling state to a non-calling state. In claim 12 ,
When session information including identification information of one call terminal among the detected call terminals as a transmission source is not acquired, it is determined that the one call terminal has transitioned from the indirect call state to the non-call state A communication method characterized by: In claim 17 or 18 ,
Notifying each information processing terminal corresponding to the detected call terminal of the identification information of the other call terminals other than the one call terminal among the detected call terminals, and based on the notified identification number A communication method characterized by relaying data transmitted and received between information processing terminals corresponding to the other call terminals. In claim 17 or 18 ,
Notifying each information processing terminal corresponding to the detected call terminal of address information of an information processing terminal corresponding to another call terminal other than the one call terminal among the detected call terminals, and A communication method characterized in that data is directly transmitted and received between information processing terminals corresponding to the other call terminals. In the communication server,
A process of acquiring session information regarding a call between each of the call terminals used by each of a plurality of users and a voice synthesis terminal that synthesizes the received voice and sends the voice back to each call terminal from the circuit switching server;
Based on the identification information of the call terminal received from each of the information processing terminals used by each of the plurality of users, a process for managing the correspondence between the call terminal used by each user and the information processing terminal;
Based on the session information, a call terminal in an indirect call state via the voice synthesis terminal is detected, and data communication between information processing terminals corresponding to the detected call terminal is performed based on the correspondence relationship. Process to control,
The session information includes identification information of a call terminal that is a call source, identification information of a voice synthesis terminal that is a call destination, and call state information that indicates whether the call terminal and the voice synthesis terminal are in a call state. All the call terminals whose identification information is included in the session information indicating that the identification information of the speech synthesis terminal matches and the call state information is in a call state in the acquired session information. , As a call terminal in the indirect call state,
Communication program for executing In the communication server,
A process of acquiring session information regarding a call between each of the call terminals used by each of a plurality of users and a voice synthesis terminal that synthesizes the received voice and sends the voice back to each call terminal from the circuit switching server;
Based on the identification information of the call terminal received from each of the information processing terminals respectively used by the plurality of users, a process for managing the correspondence between the call terminal and the information processing terminal used by each user;
Based on the session information, a call terminal in an indirect call state via the voice synthesis terminal is detected, and data communication between information processing terminals corresponding to the detected call terminal is performed based on the correspondence relationship. Process to control,
When the session information includes identification information of a caller terminal that is in a call state and identification information of a destination voice synthesis terminal, the identification information of the voice synthesis terminal is included in the acquired session information. A process of detecting all call terminals whose identification information is included as a caller in matching session information as call terminals in the indirect call state;
Communication program for executing Call terminals used by multiple users,
An information processing terminal used by each of the plurality of users;
A voice synthesizer that synthesizes and returns the received voice from each call terminal;
A circuit switching server that controls a call between each call terminal and the voice synthesis terminal;
Based on the session information regarding each call acquired from the circuit switching server, the call terminal in an indirect call state via the voice synthesis terminal is detected, and the call terminal identification information received from each information processing terminal is detected. A communication server for managing the correspondence between the call terminal and the information processing terminal used by each user, and for controlling data communication between the information processing terminals corresponding to the detected call terminal ,
The session information includes identification information of a call terminal as a call source, identification information of a voice synthesis terminal as a call destination, and call state information indicating whether the call terminal and the voice synthesis terminal are in a call state. ,
The communication server includes all the identification information as a transmission source in the session information indicating that the identification information of the speech synthesis terminal matches and the call state information is in a call state in the acquired session information. , As a call terminal in the indirect call state,
Communication system. Call terminals used by multiple users,
An information processing terminal used by each of the plurality of users;
A voice synthesizer that synthesizes and returns the received voice from each call terminal;
A circuit switching server that controls a call between each call terminal and the voice synthesis terminal;
Based on the session information regarding each call acquired from the circuit switching server, the call terminal in an indirect call state via the voice synthesis terminal is detected, and the call terminal identification information received from each information processing terminal is detected. A communication server for managing the correspondence between the call terminal and the information processing terminal used by each user, and for controlling data communication between the information processing terminals corresponding to the detected call terminal,
The session information includes identification information of a calling terminal in a call state and identification information of a destination voice synthesis terminal,
The communication server calls all the call terminals whose identification information is included in the session information with the same identification information of the speech synthesis terminal in the acquired session information, in the indirect call state. Detect as device,
Communications system.

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