JP2011049648A - Call control device, call control method, and call control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a call control technique which is free from complication of processing in spite of many connection types, and prevents addition of a new connection type from exerting an influence upon an entire system. <P>SOLUTION: A call control device 2 has: a plurality of originating-side call control means 23; a plurality of terminating-side call control means 24; a storage means 211 wherein identification information of the originating-side call control means and that of the terminating-side call control means, which are used for respective calls, are stored; a selection means 222 which selects an originating-side call control means corresponding to a connection type of an originating-side device and selects a terminating-side call control means corresponding to a connection type of a terminating-side device; and a signal control means 21 which stores the identification information of the originating-side call control means and that of the terminating-side call control means, which are selected by the selection means 222, into the storage means 211 and indicates call control processing to the selected originating-side call control means and terminating-side call control means. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a call control technique for controlling a call connection request from a terminal, and more particularly, to a call control technique for performing call connection control by switching a module according to a connection type.

  As a conventional call control system, for example, there is an outgoing / incoming separation system in which call control is separated into a calling side and a called side. When the call control is separated into the calling side and the called side, the calling side control unit and the calling subscriber circuit are connected to each other by providing a virtual internal trunk, which is a virtual trunk, in the exchange in the local station. The virtual internal trunk performs virtual connection control with the incoming side, and the called side control unit performs virtual connection control between the outgoing side of the virtual internal trunk and the called subscriber circuit. These controls are similar to the connection control between the calling subscriber circuit and the outgoing trunk when calling out of the station, or the connection control between the incoming trunk and the called subscriber circuit when receiving from outside the station. Become.

  As a result, the connection control between the intra-station connection and the out-of-station incoming connection is similar, and it is possible to achieve unity of call processing (see, for example, Patent Document 1).

Japanese Patent Application No. 08-33257

  However, the conventional call control method does not assume that there are a plurality of connection types. That is, there is one connection type for connecting the calling side control unit or the called side control unit and the subscriber circuit, and it is not assumed that there are a plurality of connection types. For this reason, when there are a plurality of connection types, it is necessary to configure a calling side control unit or a called side control unit that includes all the connection types, and as the number of included connection types increases, The processing of the control unit becomes complicated.

  In addition, when a new connection type is added later, the additional influence reaches the entire control unit. Furthermore, when executing a redirection or a new service and a complicated sequence across connection types must be realized, there is a problem that the processing of the control unit is further complicated and enlarged.

  The present invention has been made in view of the above circumstances, and the object of the present invention is not to complicate the processing even when there are many connection types, and even when a new connection type is added, there is an additional influence. It is to provide a call control technique that does not affect the whole.

  The present invention is a call control device for controlling a call connection request, which performs a call control process on the caller side for each connection type, and a call control process on the callee side for each connection type. A plurality of receiving side call control means, storage means for storing identification information of the calling side call control means used in each call and identification information of the receiving side call control means, and a plurality of calling side call control means Selecting a caller control unit corresponding to the connection type of the caller device from among the selections, and selecting a callee control unit corresponding to the connection type of the callee device from the plurality of callee call control units And the identification information of the calling side call control means selected by the selection means and the identification information of the called side call control means are stored in the storage means, and the selected calling side call control means and the called side call control means are selected. Signal control that instructs call control processing It has a means, a.

  The present invention also relates to a call control method for controlling a call connection request, wherein the call control device performs a call control process on the caller side for each connection type, and a plurality of caller side call control units for each connection type. A plurality of incoming call control units that perform call control processing on the incoming side, and a storage unit that stores the identification information of the outgoing call control unit and the incoming call control unit used in each call. And selecting a calling side call control unit corresponding to the connection type of the calling side device from the plurality of calling side call control units, and selecting a connection type of the called side device from the plurality of called side call control units. A selection step of selecting a corresponding called-side call control unit, and identification information of the calling-side call control unit selected in the selection step and identification information of the called-side call control unit are stored in the storage unit, and the selected Instruct call control processing to the calling side call control unit and the called side call control unit And a control step, is carried out.

  The present invention also provides a call control program for controlling a call connection request executed by a computer, wherein the computer performs call control processing on the calling side for each connection type, a plurality of calling side call control means, connection type A plurality of incoming side call control means for performing call control processing on the incoming side for each call, storage means for storing identification information of the outgoing call control means used in each call and identification information of the incoming call control means; A calling party call control unit corresponding to the connection type of the calling party apparatus is selected from among the calling party call control means of the other party, and the called party corresponding to the connection type of the called party apparatus is selected from the plurality of called party call control means Selection means for selecting a call control means, identification information of the calling side call control means selected by the selection means and identification information of the called side call control means are stored in the storage means, and the selected calling side call control means And Signal control means for instructing the call control process to the incoming side call control means, to function as a.

  According to the present invention, it is possible to provide a call control technique that does not complicate processing even when there are many connection types, and that does not have an additional effect on the whole even when new connection types are added. .

1 is an overall configuration diagram of a call control system according to an embodiment of the present invention. It is a block diagram which shows the structure of a call control server apparatus. It is explanatory drawing for demonstrating the module transfer process of a call control server apparatus. It is explanatory drawing for demonstrating the module reselection process of a call control server apparatus. It is a flowchart which shows operation | movement of a call control server apparatus. It is a sequence chart which shows the example of a basic operation | movement of a call control system. It is a sequence chart which shows the operation example at the time of the module transfer of a call control system. It is a sequence chart which shows the operation example at the time of module reconnection of a call control system.

  Hereinafter, embodiments of the present invention will be described.

[System configuration]
FIG. 1 is a diagram illustrating an example of a call connection system according to an embodiment of the present invention. The call control system illustrated includes a call control server device 2 and a plurality of devices 3a, 3b, 3c, 4a, 4b, and 4c. The call control server device 2 controls call connection between devices via the network 1. The call control server device 2 includes a session control function and can support a plurality of connection types. Details will be described later.

  The plurality of devices can communicate with the call control server device 2 using SIP (Session Initiation Protocol). For example, other call control server devices, terminal devices, and talk devices (automatic voice guidance devices in telephone services) ) Etc.

  Each of the plurality of apparatuses uses SIP itself, but uses connection types having different allowed methods, headers, parameters, sequences, and the like. Here, the connection type of the device 3a is IF1, the connection type of the device 3b is IF2, the connection type of the device 3c is IF3, the connection type of the device 4a is IFa, the connection type of the device 4b is IFb, and the device 4c. The connection type is IFc.

  The call control server device 2 and the plurality of devices are connected to the network 1. The network 1 is a network capable of transmitting IP packets.

  In this system, for example, when the device 3a transmits initial INVITE with the connection type IF1, the call control server device 2 receives the initial INVITE, selects the originating module corresponding to the connection type IF1, and operates it (S11). The call control server device 2 selects and operates the destination module corresponding to the connection type of the device that is the transmission destination of the initial INVITE (for example, the connection type IFa of the device 4a) based on the operation result of the calling module. Yes (S12).

  As the call control server device 2 and the plurality of devices described above, for example, a general-purpose computer system including a CPU, a memory, an external storage device such as an HDD, an input device, and an output device can be used. . In this computer system, each function of each device is realized by the CPU executing a predetermined program loaded on the memory. For example, each function of the call control server device 2 and the plurality of terminals is the CPU of the call control server device 2 in the case of a program for the call control server device 2, and the CPU of each device in the case of a program for each device. Are realized by executing each of the above.

[Configuration of Call Control Server Device 2]
Next, the call control server device 2 will be described.

  FIG. 2 is a diagram illustrating a configuration example of the call control server device 2 in the system of FIG. FIG. 2 conceptually shows only the part related to the present invention among the functions of the call control server device 2.

  Note that the following description will be made assuming that the initial INVITE is transmitted from the connection type IF1, the connection type IF2, or the connection type IF3.

  The call control server device 2 includes a signal control unit 21, a pre-analysis unit 22, a calling module 23 (calling side call control unit), a destination module 24 (calling side call control unit), a subscriber data storage unit 25, .

  The signal control unit 21 includes a module storage unit 211, a signal reception unit 212, a pre-analysis correspondence unit 213, a module correspondence unit 214, and a signal transmission unit 215.

  The module storage unit 211 stores the type (identification information) of the selected calling module 23 and the type (identification information) of the destination module 24 while the dialog exists. The dialog means a period from when a call is made until the call is disconnected. The signal receiving unit 212 receives signals transmitted from the plurality of devices 3a, 3b, 3c, 4a, 4b, and 4c.

  The pre-analysis handling unit 213 instructs the pre-analysis unit 22 to select the originating module 23 according to the connection type based on the signal received by the signal receiving unit 212 and acquires the selection result from the pre-analysis unit 22. Also, the pre-analysis handling unit 213 receives the call according to the connection type of the device that is the signal transmission destination (for example, the connection type IFa of the device 4a) based on the processing result of the source module 23 received by the module handling unit 214. The pre-analysis unit 22 is instructed to select a module, and the selection result is acquired from the pre-analysis unit 22.

  Based on the selection result of the originating module 23 acquired by the pre-analysis handling unit 213, the module handling unit 214 instructs the corresponding originating module 23 to perform processing, and receives the processing result. Further, the module correspondence unit 214 instructs the corresponding arrival module 24 based on the selection result of the arrival module 24 acquired by the pre-analysis correspondence unit 213, and receives the processing result. The signal transmission unit 215 transmits signals to the plurality of devices 3a, 3b, 3c, 4a, 4b, and 4c.

  The pre-analysis unit 22 includes a reception result transmission unit 221 and a module selection unit 222. The reception result sending unit 221 receives the selection instruction for the calling module 23 or the receiving module 24 sent from the pre-analysis handling unit 213 of the signal control unit 21 and transmits the selection result.

  Based on the selection instruction received by the reception result sending unit 221, the module selection unit 222 uses the signal received by the signal reception unit 212 included in the selection instruction, the subscriber data stored in the subscriber data storage unit 25, and the like. The source module 23 is selected. Further, the module selection unit 222 stores the processing result of the calling module 23 received by the module corresponding unit 214 included in the selection instruction and the subscriber data storage unit 25 based on the selection instruction received by the reception result transmission unit 221. The destination module 24 is selected from the subscriber data and the like.

  The calling module 23 of this embodiment is a module that is provided for each connection type and functions as a calling stage of the connection stage according to the connection type of the call connection request. In the illustrated example, the originating module 23 includes an originating module IF1 23a corresponding to the connection type IF1, an originating module IF2 23b corresponding to the connection type IF2, and an originating module IF3 23c corresponding to the connection type IF3. If a new connection type is added, it will have more modules.

  The calling module IF1 23a includes a reception result sending unit 231a and a processing unit 232a. The reception result sending unit 231a receives the processing instruction of the calling module 23a sent from the module corresponding unit 214 of the signal control unit 21, and sends the processing result. The processing unit 232a operates as an originating stage of the connection stage based on the processing instruction received by the reception result sending unit 231a.

  The originating module IF2 23b includes a reception result sending unit 231b (not shown) and a processing unit 232b (not shown). Since the reception result sending unit 231b and the processing unit 232b are the same as the above reception result sending unit 231a and the processing unit 232a, the description thereof is omitted.

  The originating module IF3 23c includes a reception result sending unit 231c (not shown) and a processing unit 232c (not shown). Since the reception result sending unit 231c and the processing unit 232c are the same as the above reception result sending unit 231a and the processing unit 232a, the description thereof is omitted.

  The arrival module 24 of this embodiment is a module that is provided for each connection type and functions as an arrival stage of the connection stage based on the operation result of the originating module. In the illustrated example, the destination module 24 includes a destination module IFa 24a corresponding to the connection type IFa, a destination module IFb 24b corresponding to the connection type IFb, and a destination module IFc 24c corresponding to the connection type IFc. When a new connection type is added, there are more destination modules.

  The destination module IFa 24a includes a reception result sending unit 241a and a processing unit 242a. The reception result transmission unit 241a receives the processing instruction of the destination module 24a transmitted from the signal control unit 21, and transmits the processing result. The processing unit 242a operates as an arrival stage of the connection stage based on the processing instruction received by the reception result sending unit 241a.

  The arrival module IFb 24b includes a reception result sending unit 241b (not shown) and a processing unit 242b (not shown). Since the reception result sending unit 241b and the processing unit 242b are the same as the above reception result sending unit 241a and the processing unit 242a, the description thereof is omitted.

  The arrival module IFc 24c includes an acceptance result sending unit 241c (not shown) and a processing unit 242c (not shown). Since the reception result sending unit 241c and the processing unit 242c are the same as the above reception result sending unit 241a and the processing unit 242a, the description thereof is omitted.

  The subscriber data storage unit 25 stores subscriber data including the connection type of the terminal device operated by the subscriber.

[Module migration processing]
Next, a detailed description will be given of a module migration process for reselecting a destination module 24 when a change to another destination module 24 is requested as a result of operating the selected destination module 24.

  FIG. 3 is a diagram for explaining an example of module migration processing of the call control server device 2 of FIG. Here, a case where the device 3a transmits initial INVITE by the connection type IF1 will be described as an example.

  When the signal reception unit 212 receives the initial INVITE, the pre-analysis handling unit 213 instructs the pre-analysis unit 22 to select the calling module 23 according to the connection type IF1 (1). The pre-analysis unit 22 selects the type (identification information) of the originating module IF1 23a (2), and returns the selection result to the pre-analysis handling unit 213.

  The pre-analysis correspondence unit 213 receives the selection result (3), stores the type (IF1) of the originating module 23 as the selection result in the module storage unit 211 (4), and sends it to the module correspondence unit 214. . Based on the selection result, the module correspondence unit 214 instructs the originating module IF1 23a to perform processing (5). The originating module IF1 23a performs processing (6) and returns the processing result to the module corresponding unit 214.

  The module correspondence unit 214 receives the processing result (7) and sends it to the pre-analysis correspondence unit 213. Based on the processing result, the pre-analysis corresponding unit 213 selects the destination module 24 corresponding to the connection type IFa of the device that is the transmission destination of the initial INVITE to the pre-analyzing unit 22, for example, the pre-analyzing unit 22. (8). The pre-analysis unit 22 selects the type (identification information) of the destination module IFa 24a (9), and returns the selection result to the pre-analysis handling unit 213.

  The pre-analysis handling unit 213 receives the selection result (10), and stores the type (IFa) of the destination module 24 as the selection result in the module storage unit 211 (11). Based on the selection result, the module corresponding unit 214 instructs the destination module IFa 24a to perform processing (12), the destination module IFa 24a performs processing (13), and returns the processing result to the module corresponding unit 214. (14).

  At this time, when the processing result is that the connection destination is changed to the device 4b of the connection type IFb instead of the device 4a of the connection type IFa (for example, the terminal device of the called subscriber is disconnected as a result of the processing) When it is necessary to switch to the talk connection), the pre-analysis handling unit 213 instructs the pre-analysis unit 22 to select the destination module 24 according to the connection type IFb (15). The pre-analysis unit 22 selects the type (identification information) of the destination module IFb 24b (16), and returns the selection result to the pre-analysis handling unit 213.

  The pre-analysis handling unit 213 receives the selection result (17), and overwrites / updates the type of the destination module 24 stored in the module storage unit 211 in (11) with the type selected later (18). Specifically, as shown in the figure, in the storage table of the module storage unit 211, the type of the calling module (IF1) and the type of the called module (IFa) are stored for each call number. ), The type (IFa) of the destination module is updated to (IFb).

  Based on the selection result, the module corresponding unit 214 instructs the destination module IFb 24b to perform processing (19). The destination module IFb 24b performs processing (20), and returns the processing result to the module corresponding unit 214. The module correspondence unit 214 receives the processing result (21), and the signal transmission unit 215 transmits the initial INVITE to the device b 4b.

[Module reconnection processing]
Next, the module reconnection process for re-operating the originating module 23 by adding conditions that were not initially operated and reconnecting the arrival module 24 based on the re-operation result will be described in detail.

  FIG. 4 is a diagram for explaining an example of module reselection processing of the call control server apparatus 2 of FIG.

  The case where the initial INVITE transmitted from the device 3a is received and the initial INVITE is transmitted to the device 4a will be described as an example.

  The signal reception unit 212 receives “301” (redirection response: Moved Permanently) transmitted from the device 4a that has received the initial INVITE. At this time, it is assumed that “IF1” is stored as the calling module 23 related to the call number of this dialog and “IFa” is stored as the called module 24 in the module storage unit 211.

  When the signal reception unit 212 receives “301”, the module storage unit 211 is referred to and the type “IFa” of the destination module 24 is acquired (1). As a result, the module correspondence unit 214 instructs the destination module IFa 24a to perform processing (2), the destination module IFa 24a performs processing (3), returns the processing result to the module correspondence unit 214, and the module correspondence unit 214 performs processing. The result is received (4).

  Further, the signal receiving unit 212 refers to the module storage unit 211 and acquires the type “IF1” of the calling module 23 (5). As a result, the module correspondence unit 214 instructs the source module IF1 23a to perform processing (6), the source module IF1 23a performs processing (7), returns the processing result to the module correspondence unit 214, and the module correspondence unit 214 performs processing. The result is received (8).

  Based on this processing result, when it is determined that the transmission destination of the initial INVITE is the device 4c of the connection type IFc (for example, when the processing results in redirection and it is necessary to reconnect to another device) The correspondence unit 213 instructs the pre-analysis unit 22 to select the destination module 24 according to the connection type IFc (9), and the pre-analysis unit 22 selects the type (identification information) of the destination module IFc 24c (10). The selection result is returned to the pre-analysis handling unit 213, and the pre-analysis handling unit 213 receives the selection result (11). Then, the preliminary analysis handling unit 213 overwrites / updates the type (IFa) of the destination module 24 in the module storage unit 211 with the type (IFc) selected later in (11) (12).

  Based on the selection result, the module corresponding unit 214 instructs the destination module IFc 24c to perform processing (13), the destination module IFc 24c performs processing (14), and returns the processing result to the module corresponding unit 214. Received (15), the signal sending unit 215 sends the initial INVITE to the device 4c.

[Operation of Call Control Server Device 2]
Next, the operation of the call control server device 2 will be described.

  FIG. 5 is a flowchart showing an operation example of the call control server device 2 of FIG.

  The signal receiving unit 212 receives a signal from a predetermined device (step A1), and refers to the module storage unit 211 to determine whether or not a source module and a destination module have been selected (step A2). Here, it is assumed that initial INVITE is transmitted from the device 3a of the connection type IF1. It is assumed that the initial INVITE includes the connection type of the transmission source device, call identification information, connection destination information, and the like.

  When receiving the initial INVITE, the module storage unit 211 has not selected the calling module 23 and the called module 24 corresponding to the call number of the call (that is, the types of the calling module 23 and the called module 24 are stored). (Step A2: NO), the pre-analysis handling unit 213 instructs the pre-analysis unit 22 to select the originating module 23 according to the connection type IF1 (Step A3). The pre-analysis unit 22 selects the type / identification information (module ID, etc.) of the calling module IF1 23a corresponding to the connection type IF1 (step A4), and returns the selection result.

  For example, the pre-analysis unit 22 stores in advance a correspondence table in which the connection type is associated with the type / identification information of the originating module, and a correspondence table in which the connection type is associated with the type / identification information of the destination module. Suppose you are.

  The pre-analysis correspondence unit 213 receives the selection result (step A5), and associates the type of the calling module 23 designated by the selection result with the call number generated based on the call identification information included in the initial INVITE. It memorize | stores in the memory | storage part 211 (step A6). Then, the module corresponding unit 214 designates the connection destination information included in the initial INVITE and instructs the calling module IF1 23a to perform processing (step A7), and the calling module IF1 23a performs call control processing on the calling side ( Step A8), the processing result is returned, and the module correspondence unit 214 receives it (Step A9).

  The processing result here includes information as to whether or not the connection destination device is a device accommodated in the own call control server device 2. Here, when the device to be connected is a device accommodated in the own call control server device 2, it is assumed that the connection type of the device is IFa.

  Based on such processing results, the pre-analysis handling unit 213 determines that the transmission destination of the initial INVITE is the device 4a of the connection type IFa, and causes the pre-analysis unit 22 to determine the connection type of the device 4a that is the transmission destination of the initial INVITE. The selection of the arrival module 24 corresponding to IFa is instructed (step A10).

  The pre-analysis unit 22 selects the type / identification information (module ID, etc.) of the destination module IFa 24a (step A11), returns the selection result, and the pre-analysis correspondence unit 213 receives it (step A12). Then, the pre-analysis correspondence unit 213 stores (overwrites) the type of the destination module 24 in association with the call number in the module storage unit 211 (step A13).

  Then, the module correspondence unit 214 instructs the destination module IFa 24a to perform processing (step A14). The destination module IFa 24a performs call control processing (signal transmission processing to the connection destination terminal, etc.) on the called side (step A15), returns the processing result, and the module correspondence unit 214 receives it (step A16). The processing result includes success (OK) or failure (NG) of the signal transmission processing which is call control processing on the called side.

  If the processing result is successful (OK), the module correspondence unit 214 determines that there is no change in the connection destination (step A17: None), and if the processing result is failure (NG), determines that there is a change in the connection destination. (Step A17: Present).

  When there is no change in the connection destination (step A17: none), the signal transmission unit 215 transmits initial INVITE to the connection destination device 4a (connection type IFa) (step A18). On the other hand, if there is a change in the connection destination (step A17: present), the process returns to step A10 and the destination module 24 is reselected. As a case where the connection destination is changed, for example, when the connection destination terminal 4a is busy (busy) or is not responding, it is conceivable to change the connection destination to a talk device. In this case, the selection of the destination module 24 corresponding to the connection type of the talk device is instructed (step A10).

  If the signal receiving unit 212 receives the signal in step A1 and the module storage unit 211 is referred to and the calling module and called module corresponding to the signal have been selected (step A2: YES), the signal The accepting unit 212 determines whether the signal needs reconnection processing (step A19). Whether or not the signal requires reconnection processing may be determined based on whether or not the signal is “30X” (redirection response), for example. When the reconnection process is not necessary (step A19: NO), the process ends.

  On the other hand, when reconnection processing is necessary (step A19: YES), the signal receiving unit 212 refers to the module storage unit 211, and the type of the called module 24 of the call number (here, “IFa”). Is acquired (step A20). Then, the module correspondence unit 214 instructs the called module IFa 24a to perform processing (step A21), and the called module IFa 24a performs call control processing on the called side (signal transmission processing to the connection destination terminal, etc.) (step S21). A22), the processing result is returned, and the module correspondence unit 214 receives it (step A23).

  Further, the module correspondence unit 214 refers to the module storage unit 211 and acquires the type (here, “IF1”) of the calling module 23 of the call number (step A24). Then, the module correspondence unit 214 instructs the source module IF1 23a to perform processing (Step A25), the source module IF1 23a performs processing (Step A26), returns the processing result, and the module correspondence unit 214 receives (Step S25). A27).

  The module correspondence unit 214 determines whether or not the connection destination has been changed. If there is no change (step A28: none), the signal transmission unit 215 transmits a signal to the device 3a (connection type IF1) (step A29).

  If the connection destination is changed in step A28 (step A28: present), the process returns to step A10 to reselect the destination module 24. For example, the determination of whether or not the connection destination is changed includes, for example, information on the connection destination in the signal “30X” (redirection response), and is determined based on this information.

[System Operation]
Next, the operation of the call control system of this embodiment will be described with reference to FIGS.

  FIG. 6 is a sequence chart showing a basic operation example of the present embodiment.

  In the sequence chart shown in the figure, a sequence among the terminal device 3a, the call control server device 2, the call control server device 4aa, and the terminal device 4ab is shown. The terminal device 3a is a specific device of the device 3a shown in FIG. Further, the call control server device 4aa and the terminal device 4ab are specific devices of the device 4a shown in FIG.

  When the terminal device 3a (connection type IF1) transmits INVITE (1) (step B1), the calling module IF1 23a and the called module IFa 24a of the call control server device 2 respectively perform call control processing, and the call control server device 4aa (connection) INVITE (2) is transmitted to type IFa (step B2), 100Trying (1) is transmitted to terminal device 3a (step B3), and terminal device 3a receives 100Trying (1).

  When the call control server device 4aa receives INVITE (2), it transmits INVITE (3) to the terminal device 4ab (step B4). The terminal device 4ab that has received INVITE (3) transmits 180 Ringing (1) to the call control server device 4aa (step B5), and the call control server device 4aa transmits 180 Ringing (2) to the call control server device 2. (Step B6).

  The terminating module IFa 24a and the originating module IF1 23a of the call control server device 2 process 180Ringing and transmit 180Ringing (3) to the terminal device 3a to the terminal device 3a (step B7).

  When the terminal device 4ab transmits 200OK (1) to the call control server device 4aa (step B8), the call control server device 4aa transmits 200 OK (2) to the call control server device 2 (step B9). The destination module IFa 24a and the calling module IF1 23a of the call control server device 2 process 200OK (2) and transmit 200OK (3) to the terminal device 3a (step B10). When the terminal device 3a receives 200 OK (3), the terminal device 3a and the terminal device 4ab are in a call state (step B11).

  In addition, the process of B1-B2 demonstrated above is a process corresponded to A1-A18 shown in FIG.

  FIG. 7 is a sequence chart showing an operation example when performing module migration according to the present embodiment.

  In the sequence chart shown in the figure, a sequence among the terminal device 3a, the call control server device 2, and the talk device 4b is shown. The terminal device 3a is a specific device of the device 3a shown in FIG. The talk device 4b is a specific device of the device 4b shown in FIG.

  When the terminal device 3a (connection type IF1) transmits INVITE (1) (step C1), the calling module IF1 23a and the called module IFa 24a of the call control server device 2 respectively perform call control processing. Here, in the call control processing (signal transmission processing to the connection destination terminal, etc.) on the called side of the called module IFa 24a, connection to the talking device 4b and migration of the called module 24 are necessary, and connection of the talking device 4b is required. It is assumed that the destination module IFb 24b corresponding to the type IFb is selected.

  Through the processing of the originating module IF1 23a and the terminating module IFb 24b, the call control server device 2 transmits INVITE (2) to the talk device 4b (connection type IFb) (step C2) and 100Trying (1) to the terminal device 3a. Is transmitted (step C3).

  When the talk device 4b that has received INVITE (2) transmits 200 OK (1) to the call control server device 2 (step C4), the call control server device 2 receives it, and the destination module IFb 24b and the originating module IF1 23a perform call control. Then, 200OK (2) is transmitted to the terminal device 3a (step C5). When the terminal device 3a receives 200 OK (2), the terminal device 3a and the talk device 4b become communicable, and a predetermined talk (voice guidance) is sent from the talk device 4b to the terminal device 3a ( Step C6).

  The above-described processing of C1 to C2 is processing corresponding to A1 to A17: A1 and A10 to A18 shown in FIG.

  FIG. 8 is a sequence chart showing an operation example when performing module reconnection in the present embodiment.

  The sequence chart shown in the figure shows a sequence among the terminal device 3a, the call control server device 2, the call control server device 4a, and the terminal device 4c. The terminal device 3a is a specific device of the device 3a shown in FIG. The call control server device 4a is a specific device of the device 4a shown in FIG. The terminal device 4c is a specific device of the device 4c shown in FIG.

  When the terminal device 3a (connection type IF1) transmits INVITE (1) (step D1), the calling module IF1 23a and the called module IFa 24a of the call control server device 2 process the call control server device 4a (connection type IFa). INVITE (2) is transmitted to the terminal device 3a (step D2), 100Trying (1) is transmitted to the terminal device 3a (step D3), and the terminal device 3a receives it.

  The call control server device 4a receives INVITE (2) and transmits a redirection response of “301” to the call control server device 2 (step D4). Upon receiving the redirection response “301”, the call control server device 2 determines that the destination module IFa 24a and the source module IF1 23a perform processing, and that the destination module IF1 23a needs to be reconnected. Then, the destination module IFc 24c is selected, and INVITE (3) is transmitted to the terminal device 4c (connection type IFc) by the processing of the originating module IF1 23a and the destination module IFc 24c (step D5), and the terminal device 4c receives it. .

  When the terminal device 4c that has received INVITE (3) transmits 180 Ringing (1) (step D6), the call control server device 2 receives it, the incoming module IFc 24c and the originating module IF1 23a process it, and the terminal device 3a receives 180 Ringing. (2) is transmitted (step D7), and the terminal device 3a receives it.

  When the terminal device 4c transmits 200OK (1) (step D8), the call control server device 2 receives it, the destination module IFc 24c and the originating module IF1 23a process it, and transmits 200OK (2) to the terminal device 3a. (Step D9) When the terminal device 3a receives the data, the terminal device 3a and the terminal device 4c are in a call state (step D10).

  The above-described processes D4 to D5 are processes corresponding to A19 to A28: A1 and A10 to A18 shown in FIG.

  The present embodiment described above provides a call control technique that does not complicate processing even when there are many connection types, and that does not have an additional effect even when new connection types are added. Can do.

  That is, in this embodiment, a calling module and a receiving module are prepared for each connection type, a calling module that functions as a calling stage of the connection stage is selected according to the connected connection type, the calling module is operated, and the calling module is operated. Based on the operation result of the module, a destination module that functions as a destination stage of the connection stage is selected, the destination module is operated, and the type of the selected source module and destination module is stored while a call exists. In other words, in this embodiment, call control is performed by switching between the calling module and the called module according to the connection type.

  As a result, it is possible to easily deal with cases where there are many connection types or new connection types are added, and it is possible to reduce the number of times the calling module and called module are selected during a call. become.

  Further, in the present embodiment, when the selected destination module is operated, as a result of requesting a change to another destination module, it is possible to realize module migration that allows reselection of the destination module.

  Further, in the present embodiment, the originating module can be re-operated with conditions that did not exist when it was first operated, and the arrival module can be re-selected based on the re-operation result. As a result, when executing redirection or a new service, it is possible to easily cope with the realization of a complicated sequence across connection types.

  In addition, this invention is not limited to the said embodiment, Many deformation | transformation are possible within the range of the summary.

DESCRIPTION OF SYMBOLS 1 Network 2 Call control server apparatus 21 Signal control part 211 Module memory | storage part 212 Signal reception part 213 Preanalysis corresponding part 214 Module response part 215 Signal transmission part 22 Preanalysis part 221 Reception result transmission part 221 Module selection part 23a Origination module 231a Reception Result sending unit 232a Processing unit 23b Source module IF2
23c module IF3
24 arrival module 24a arrival module IF1
241a Reception result sending unit 242a Processing unit 24b Arrival module IF2
24c arrival module IF3
25 Subscriber data storage unit 3a, 3b, 3c, 4a, 4b, 4c

Claims (9)

A call control device for controlling a call connection request,
A plurality of calling side call control means for performing call control processing on the calling side for each connection type;
A plurality of called-side call control means for performing call control processing on the called side for each connection type;
Storage means for storing identification information of the calling side call control means and identification information of the called side call control means used in each call;
The calling side call control means corresponding to the connection type of the calling side apparatus is selected from the plurality of calling side call control means, and the connection type of the called side apparatus is selected from the plurality of called side call control means. A selection means for selecting a called-side call control means;
The identification information of the calling side call control means and the identification information of the called side call control means selected by the selection means are stored in the storage means, and call control is performed on the selected calling side call control means and the called side call control means. And a signal control means for instructing processing. The call control device according to claim 1,
The signal control means causes the selection means to reselect the called side call control means corresponding to the connection type of the predetermined called side device when the call control processing of the called side call control means selected by the selection means fails. A call control device characterized by storing identification information of the reselected caller side call control means in the storage means and instructing the reselected callee side call control means to perform call control processing. The call control device according to claim 1 or 2,
When the signal control means receives the reconnection request, the signal control means acquires the identification information of the calling side call control means and the identification information of the called side call control means corresponding to the call of the reconnection request from the storage means, and acquires the information Instructing call control processing to the caller side call control means and the callee side call control means of each identification information,
Receiving side call control means corresponding to a connection type of a predetermined called terminal specified by the reconnection request is selected by the selection means, and identification information of the reselected receiving side call control means is stored in the storage means. And instructing call control processing to the reselected incoming call control means. A call control method for controlling a call connection request,
The call control device
A plurality of calling side call control units that perform call control processing on the calling side for each connection type, and
A plurality of incoming call control units that perform call control processing on the incoming side for each connection type; and
A storage unit for storing the identification information of the calling side call control unit used in each call and the identification information of the called side call control unit;
A caller control unit corresponding to the connection type of the calling device is selected from the plurality of caller control units, and a connection type of the called device is selected from the plurality of caller control units. A selection step of selecting a called party call control unit;
The identification information of the calling side call control unit selected in the selection step and the identification information of the called side call control unit are stored in the storage unit, and call control is performed in the selected calling side call control unit and the called side call control unit. And a control step for instructing processing. The call control method according to claim 4, wherein
If the call control process of the called call control unit selected in the selection step fails,
A reselection step of reselecting the called call control unit corresponding to the connection type of the predetermined called device;
Storing the identification information of the reselected called party call control unit in the storage unit, and further performing a recontrol step of instructing the reselected called side call control unit to perform call control processing. Call control method. The call control method according to claim 4 or 5, wherein:
If a reconnection request is received,
The identification information of the calling side call control unit and the identification information of the called side call control unit corresponding to the call of the reconnection request is acquired from the storage unit, and the calling side call control unit and the called side call of each of the acquired identification information An instruction step for instructing the control unit to perform call control processing;
A reselection step of reselecting the called call control unit corresponding to the connection type of the predetermined called device specified in the reconnection request;
Storing the identification information of the reselected called party call control unit in the storage unit, and further performing a recontrol step of instructing the reselected called party call control unit to perform call control processing. Call control method. A call control program for controlling a call connection request executed by a computer,
The computer,
A plurality of calling side call control means for performing call control processing on the calling side for each connection type,
Multiple incoming call control means for performing incoming call control processing for each connection type,
Storage means for storing the identification information of the calling side call control means and the identification information of the called side call control means used in each call;
The calling side call control means corresponding to the connection type of the calling side apparatus is selected from the plurality of calling side call control means, and the connection type of the called side apparatus is selected from the plurality of called side call control means. A selection means for selecting the called side call control means;
The identification information of the calling side call control means and the identification information of the called side call control means selected by the selection means are stored in the storage means, and call control is performed on the selected calling side call control means and the called side call control means. A call control program that functions as signal control means for instructing processing. A call control program according to claim 7,
The signal control means causes the selection means to reselect the called side call control means corresponding to the connection type of the predetermined called side device when the call control processing of the called side call control means selected by the selection means fails. A call control program characterized by storing identification information of the reselected incoming call control means in the storage means and instructing the reselected incoming call control means to perform call control processing. A call control program according to claim 7 or claim 8,
When the signal control means receives the reconnection request, the signal control means acquires the identification information of the calling side call control means and the identification information of the called side call control means corresponding to the call of the reconnection request from the storage means, and acquires the information Instructing call control processing to the caller side call control means and the callee side call control means of each identification information,
Receiving side call control means corresponding to a connection type of a predetermined called terminal specified by the reconnection request is selected by the selection means, and identification information of the reselected receiving side call control means is stored in the storage means. And instructing call control processing to the reselected called-side call control means.

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