JP5227903B2 - Relay system, communication control device, terminal migration method, and communication control program - Google Patents

Description

  The present invention relates to a relay system, a communication control apparatus, a terminal transition method, and a communication control program that relay calls between terminals.

  Conventionally, in order to establish a telephone call between telephones, communication control devices such as a repeater, an exchange, and a SIP server have been used (for example, see Patent Documents 1 to 3).

  The SIP server relays communication between terminals when making a call from a terminal (telephone) accommodated in advance to another terminal or when receiving an incoming call from another terminal to a terminal accommodated in advance. On the network, there are a plurality of SIP servers with different performance and services to be provided, and each SIP server accommodates a different terminal.

  Here, the terminal has the address (IP address or the like) of the accommodation destination SIP server, and can access the accommodation destination SIP server using this address. Further, the SIP server also has location information (for example, IP address) of the accommodated terminal (accommodating terminal), and can access the accommodating terminal using this location information.

  On the other hand, the terminal may change the SIP server that is the accommodation destination for some reason. For example, when the SIP server becomes obsolete, a new SIP server is prepared, and the terminal accommodated in the aging SIP server (migration source) is accommodated in the new SIP server (migration destination). In addition, when switching the service contracted by the user, the SIP server (providing a service for newly contracting the user terminal accommodated in the SIP server (migration source) that provides the service contracted at the beginning) (Destination). Further, even when the SIP server accommodates more terminals than the capacity, a part of the terminals accommodated by the high load SIP server (migration source) is changed to the low load SIP server (migration destination). Contain.

  For example, in the case of an exchange as described in Patent Documents 1 to 3, the exchange used by the terminal is physically disconnected or connected to the exchange between the terminal and the exchange. Calls can be made immediately via the connected exchange.

  On the other hand, when the SIP server is used, when the SIP server that is the terminal accommodation destination is changed, it is necessary to newly set the address of the SIP server that becomes the new accommodation destination in the terminal. It is necessary to set the location information of the terminal even in the SIP server (migration destination).

  However, in order to set the address of the new migration destination SIP server at the terminal, the user needs to set the address of the notified SIP server (migration destination) at the terminal. It is not possible to know whether or not the setting of the new address of the SIP server is completed. In addition, when a plurality of accommodating terminals are transferred at the same time, the SIP server needs to set the location information of the plurality of accommodating terminals. Also, if there is an incoming call to the migration terminal or an incoming call from the migration terminal before the location information is set, the terminal accommodation destination is accurately set between the migration source SIP server, the migration destination SIP server and the terminal. A situation that cannot be grasped may occur. Therefore, conventionally, the provision of services to the terminal by the SIP server may be interrupted until the migration process is completed, and there is a problem that the terminal cannot make a call.

  In order to avoid interruption of the call, a management server that manages the relationship between the terminal and the SIP server of the accommodation destination is provided on the network separately from the SIP server, and the terminal accesses the management server for each call and is accommodated. Although there is a method of grasping the SIP server, this method has a complicated problem in each call processing.

JP-A-10-174144 JP-A-8-251642 JP-A-5-83404

  As described above, in the conventional communication control apparatus, when there is a transition of the terminal to be accommodated, there is a problem that it is necessary to interrupt incoming / outgoing calls at the terminal or to perform complicated processing. .

  Accordingly, the present invention provides a relay system, a communication control apparatus, a terminal transition method, and a communication control program that relay terminals reliably and easily migrate or add relay target terminals.

  The relay system according to the present invention includes a first communication control device that controls communication between an accommodation terminal that is accommodated in advance and another terminal, a terminal that is different from the accommodation terminal of the first control device, and an accommodation terminal that is accommodated in advance. A relay system having a second communication control device for controlling communication, wherein the first communication control device issues a request for requesting a call between an accommodation terminal whose accommodation status flag is set to accommodation availability and another terminal. When receiving the first call processing means for establishing communication with the accommodation terminal and the other terminal and the information change request for the accommodation terminal for changing the accommodation destination to the second communication control device, the first terminal data From the terminal data relating to the accommodation terminal accommodated in the first communication control device stored in the storage unit, information relating to the migration terminal to be processed by the change request is extracted, and the second that is the migration destination. When a request for a call with the transition terminal is received after transmitting the transmission means for transmitting to the communication control device and the data regarding the accommodation terminal, the flag regarding the accommodation state of the migration terminal is updated to containment when the flag regarding the accommodation state of the transition terminal is contained. And a first updating means for transmitting to the second communication control device a request for updating the accommodation state flag of the transition terminal from non-accommodation to accommodation existence, and the second communication control device has the accommodation state flag contained. When a request for requesting a call between the accommodation terminal set to the other terminal and another terminal is received, the first call processing means for establishing communication with the accommodation terminal and the other terminal and the first communication control device transmit When the information on the new accommodation terminal is received, the terminal data on the accommodation terminal accommodated in the second communication control device stored in the second terminal data storage unit is received. After registering the information regarding the new accommodation terminal and the request for the call from the transition terminal after registering the data regarding the accommodation terminal, if the flag regarding the accommodation status of the transition terminal is not accommodation, And a first update means for transmitting to the first communication control device a request for updating the accommodation state flag of the transition terminal from accommodation to non-accommodation.

  A communication control device according to the present invention is a communication control device that controls incoming call processing from another terminal to an accommodation terminal accommodated in advance and controls outgoing processing from the accommodation terminal accommodated in advance to another terminal. A call processing means for establishing communication between the accommodation terminal and the other terminal upon receiving a request for a call between the accommodation terminal for which the accommodation state flag is set to containment and the other terminal; When a change request for information related to an accommodation terminal whose accommodation destination is to be changed is input to the communication control device, terminal data relating to the accommodation terminal stored in the communication control device stored in the terminal data storage unit is processed by the change request. Extract information about the migration terminal, send it to other communication control devices that will be the migration destination, and send data about the accommodation terminal, then call with the accommodation terminal When the request for request is received, when the flag related to the accommodation state of the transition terminal is contained, it is updated to containment, and the other communication control device updates the accommodation state flag of the migration terminal from accommodation not to accommodation Update means for transmitting the request.

  The terminal migration method according to the present invention includes a first communication control device that controls communication between an accommodation terminal accommodated in advance and another terminal, and an accommodation terminal that accommodates a terminal different from the accommodation terminal of the first control device and accommodates in advance. A terminal transition method in a relay system having a second communication control device for controlling the communication of the first communication control device, wherein the first communication control device inputs a change request for information relating to the accommodation terminal that changes the accommodation destination to the second communication control device. In the first communication control device, information on the transition terminal to be processed in the change request is extracted from the terminal data on the accommodation terminal accommodated by the first communication control device stored in the first terminal data storage unit. And a step of transmitting to the second communication control device as the migration destination, and a new accommodating terminal transmitted from the first communication control device in the second communication control device. And in the second communication control device, in the second communication control device, in the terminal data related to the accommodation terminal accommodated in the second communication control device stored in the second terminal data storage unit, the received information relating to the new accommodation terminal. In the step of registering, when the first communication control device receives a request for a call with the transition terminal after transmitting the data regarding the accommodation terminal, when the flag regarding the accommodation state of the transition terminal is accommodation, A step of updating, a step of transmitting a request for updating the flag of the accommodation state of the transition terminal from non-accommodation to accommodation existence in the first communication control device, and a request in the second communication control device. Therefore, the method includes a step of updating the accommodation state flag from the non-accommodation state to the accommodation state.

  A communication control program according to the present invention stores a first communication control device that controls communication between a storage terminal that is stored in advance and another terminal, and a storage terminal that stores a terminal different from the storage terminal of the first control device and stores the terminal in advance. A communication control program in a relay system having a second communication control device for controlling the communication of the second communication control device, the step of inputting a change request for changing the accommodation destination to the second communication control device, and a first stored in the terminal data storage unit Extracting information about the migration terminal to be processed by the change request from the terminal data about the accommodation terminal accommodated by one communication control device, and transmitting the data about the accommodation terminal to the second communication control device to be the migration destination Later, when a request for requesting a call with the transition terminal is received, when the flag regarding the accommodation state of the transition terminal is “accommodated”, it is changed to “not accommodated”. The method comprising, executing the steps on a computer sending a request for updating the second communication control unit Nakara accommodate flag accommodating state transition terminal to accommodate perforated.

  ADVANTAGE OF THE INVENTION According to this invention, in a relay system, transfer of a terminal is realizable without interrupting provision of the service to a terminal.

It is the schematic explaining the relay system which concerns on the best embodiment of this invention. It is a sequence diagram explaining the process in the relay system shown in FIG. It is an example of the terminal data utilized with the communication control apparatus shown in FIG. It is a figure explaining the update of the terminal data shown in FIG. It is a flowchart explaining the process in the communication control apparatus shown in FIG. It is a flowchart explaining the process in the communication control apparatus shown in FIG. It is a flowchart explaining the process in the communication control apparatus shown in FIG. It is a figure explaining an example by which the terminal data shown in FIG. 4 were updated.

  Hereinafter, a relay system according to the best embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, in the terminal call system 1 according to the best embodiment of the present invention, a first communication control apparatus 10 to which a plurality of terminals 101 to 103 are connected and a first communication controller 10 to which a plurality of terminals 201 to 203 are connected. Two communication control devices 20 are connected via the first network 30. In addition, a plurality of terminals 51 to 53 are connected to the first network 30 via the second network 40.

  Specifically, the first communication control device 10 and the second communication control device 20 are devices that control communication of a telephone such as a SIP server, and the terminals 101 to 103 are accommodated in the first communication control device 10. Thus, it is possible to make a call with other terminals 201 to 203 and 51 to 53 via the first communication control device 10. Further, the terminals 201 to 203 are accommodated in the second communication control device 20 and can make a call with the other terminals 101 to 103 and 51 to 53 via the second communication control device 20.

  Here, the description will be made assuming that the terminal 101 accommodated in the first communication control apparatus 10 is accommodated in the second communication control apparatus 20. That is, in the example illustrated in FIG. 1, the first communication control device 10 is a migration source device, and the second communication control device 20 is a migration destination device. As described above, when the communication control device that is the accommodation destination of the terminal 101 changes, it is necessary to update the information related to the terminal 101 from the first communication control device 10 that is the migration source to the second communication control device 20 that is the migration destination.

  For example, as shown in the sequence diagram of FIG. 2, when the first communication control device 10 receives a request for changing the information of the terminal 101 registered in the first communication control device 10 from the terminal 101 (S1), The first communication control device 10 transmits information registered to the terminal 101 to the second communication control device 20 (S2). The second communication control device 20 registers the received information (S3), and transmits a registration completion notification to the first communication control device 10 (S4). The target information includes user information related to a user who uses the terminal 101, location information related to the position of the terminal 101, service information related to the operation status of the service of the terminal 101, and the like.

  When the registration of information related to the terminal 101 is completed in the second communication control device 20, the first communication control device 10 transmits a change notification notifying that the change has been completed to the terminal 101 (S5).

  When the registration of information is completed, the terminal accommodation state is updated in the first communication control device 10 at a predetermined timing (S6), and the terminal accommodation state is also updated in the second communication control device 20. (S7). Here, in the 1st communication control apparatus 10 and the 2nd communication control apparatus, the accommodation state of the same terminal needs to respond | correspond. That is, when the terminal 101 is “accommodated” in the first communication control device 10, it must be “not accommodated” in the second communication control device, and when the terminal 101 is “accommodated” in the first communication control device 10. It must be “accommodated” in the second communication control device. Therefore, the update timing of the accommodation state is important, and the update timing will be described in detail later.

  As shown in FIG. 1, the first communication control device 10 serving as a migration source is a general information processing device including a central processing unit (CPU) 11, a storage device 12, and a communication interface (communication I / F) 13. . In the first communication control device 10, the communication control program P1 stored in the storage device 12 is read and executed, whereby the incoming call processing means 111, the outgoing call processing means 112, the user information transmission means 113, the location information transmission means. 114, a service information transmission unit 115, a state update unit 116, a synchronization check unit 117, and a location information processing unit 118 are mounted on the CPU 11.

  The storage device 12 stores terminal data D1 along with the communication control program P1. The terminal data D1 is data relating to the terminal accommodated in the first communication control apparatus 10 or the terminal accommodated in the past. For example, “user information” relating to the user who owns the terminal 101, position information of the terminal 101 The data includes “location information” related to the service information and “service information” related to the operation state of the service registered by the user with respect to the terminal 101.

  In the example of the terminal data D1 shown in FIG. 3A, the user information includes “user terminal ID”, “user name”, and “password”. The “location information” of the terminal data D1 is, for example, the IP address or URL of the terminal 101. Further, in the example of the terminal data D1, the service information includes whether or not the operation start of the “transfer service” and the “answering machine service” is set in the terminal. In addition, in the terminal data D1 shown in FIG. 3A, a flag relating to “accommodating state” for specifying whether or not the terminal is accommodated, whether or not the terminal “migration processing” is present, and the destination or source communication control device are specified. Includes "migration destination / source". In the example shown in FIG. 3A, the terminal data D1 includes user information, location information, and service information. However, each information may be stored separately.

  When the incoming call processing unit 111 receives a request for a call with the accommodation terminals 101 to 103 from another destination terminal, the incoming call processing unit 111 transmits a request for the call to the accommodation terminal for which a call is requested. Further, when there is a response from the terminals 101 to 103 that transmitted the request, the incoming call processing means 111 establishes a call between the responding accommodating terminal and the destination terminal that requested the call.

  When receiving a request for requesting a call with another terminal from any of the accommodating terminals 101 to 103, the transmission processing unit 112 transmits a request for requesting a call to the destination terminal for which the call is requested. Further, when there is a response from the communication destination terminal that transmitted the request, the transmission processing means 112 establishes a call between the responding communication destination terminal and the accommodating terminal that is requesting the call.

  The user information transmission unit 113 reads the terminal data D1 stored in the storage device 12 at a predetermined timing, extracts the corresponding user information, and transmits it to the second communication control device 20 that is the migration destination. For example, the predetermined timing is the timing at which a request for changing the registered user information is received from the terminal 101 that is designated in advance to change the accommodation destination, or the input device that the first communication control apparatus 10 has. And a timing when a request is input from another server device (not shown) or the like.

  The location information transmission unit 114 reads the terminal data D1 stored in the storage device 12 at a predetermined timing, extracts the location information of the terminal 101, and transmits it to the second communication control device 20 that is the migration destination. For example, the predetermined timing is the timing at which a request for changing the location information registered from the terminal 101 designated in advance as the accommodation destination is changed, or the input device included in the first communication control device 10. And a timing when a request is input from another server device (not shown) or the like.

  The service information transmission means 115 reads the terminal data D1 stored in the storage device 12 at a predetermined timing, extracts the corresponding service information, and transmits it to the second communication control device 20 that is the migration destination. For example, the predetermined timing refers to the timing at which a request for changing the service information registered from the terminal 101 designated in advance as the accommodation destination is changed, or the input device that the first communication control device 10 has. And a timing when a request is input from another server device (not shown) or the like.

  When the transfer of the accommodation terminal is completed, the state update unit 116 updates the accommodation state from “present” to “none”. Here, the accommodation state update timing is the timing at which processing related to the terminal to which the incoming call processing unit 111 or the outgoing call processing unit 112 should have started, or a request for updating the accommodation state from the second communication control device 20 is received. It is the timing. The incoming call processing unit 111 and the outgoing call processing unit 112 execute processing with reference to the presence / absence of the accommodation state. However, when the accommodation terminal is migrated, the accommodation states of the migration source and the migration destination correspond as described above. There must be. Accordingly, when the accommodation state of the terminal that has been migrated is changed from “present” to “none”, the second communication control device 20 that is the migration destination also changes the accommodation status of the same terminal from “none” to “present”. It needs to be changed. Therefore, when the accommodation state is updated at the timing when the incoming call processing unit 111 or the transmission processing unit 112 is released, the state update unit 116 transmits a request for the second communication control device 20 to update the accommodation state. To do.

  The synchronization check means 117 periodically reads the terminal data D1 stored in the storage device 12, and also reads information contained in the terminal data D2 stored in the second communication control device 20 from the second communication control device 20. When the information contained in the received and read terminal data D1 and the information contained in the terminal data D2 received from the second communication control device 20 are collated to determine whether or not they match. , Synchronize information that did not match.

  When the location information processing unit 118 receives a request (so-called Register request) for notifying location information of each terminal from the accommodated terminals 101 to 103, the location information processing unit 118 updates the location information of the terminal data D1 according to the received request. It is.

  FIG. 4 (a) shows an example of terminal data D1 when the accommodating terminal 101 is being migrated. 4A compares the data before the terminal 101 shown in FIG. 3A before the migration process is performed, the migration process is changed from “No” to “Yes”, and the migration destination / original is changed to “No. The difference is that “identification information of 2 communication control device 20” is added.

  As shown in FIG. 2, the second communication control device 20 serving as a transfer destination is a general information processing device including a central processing unit (CPU) 21, a storage device 22, and a communication interface (communication I / F) 23. . In the second communication control device 20, the communication control program P2 stored in the storage device 22 is read and executed, whereby the incoming call processing means 211, the outgoing call processing means 212, the user information registration means 213, the location information registration means. 214, a service information registration unit 215, a status update unit 216, a synchronization check unit 217, and a location information processing unit 218 are mounted on the CPU 21.

  The storage device 22 stores terminal data D2 together with the communication control program P2. The terminal data D2 is data related to the terminal accommodated in the second communication control apparatus 20, and includes, for example, “user information” regarding the user who owns the terminal 201, “location information” regarding the position information of the terminal 201, and the user This data includes “service information” related to the operation status of the service registered for the terminal 201.

  In the example of the terminal data D2 shown in FIG. 3B, the user information includes “user terminal ID”, “user name”, and “password”. The “location information” of the terminal data D2 is, for example, the IP address or URL of the terminal 201. Furthermore, in the example of the terminal data D2, the service information includes whether or not the operation start of the “transfer service” and the “answering machine service” is set in the terminal. Further, in the terminal data D2 shown in FIG. 3B, the “accommodation state” indicating whether or not the terminal is accommodated, the presence or absence of the “migration process” of the terminal, the “migration destination” that identifies the migration destination or the migration source communication control device / Yuan ".

  When the incoming call processing unit 211 receives a request for a call with the accommodation terminals 201 to 203 from another destination terminal, the incoming call processing unit 211 transmits a request for the call to the accommodation terminal for which a call is requested. Further, when there is a response from the terminals 201 to 203 that transmitted the request, the incoming call processing means 211 establishes a call between the responding accommodating terminal and the destination terminal that requested the call.

  When receiving a request for requesting a call with another terminal from any of the accommodating terminals 201 to 203, the transmission processing unit 212 transmits a request for requesting a call to the destination terminal requested to call. In addition, when there is a response from the communication destination terminal that transmitted the request, the transmission processing unit 212 establishes a call between the responding communication destination terminal and the accommodating terminal requesting the call.

  When the user information registration unit 213 receives the user information transmitted from the first communication control device 10 that is the transfer source, the user information registration unit 213 adds the received new user information to the terminal data D2 stored in the storage device 22, and the terminal data Update D2. When the received new user information is added to the terminal data D2, the user information registration unit 213 transmits a registration completion notification indicating that the registration of the new user information has been completed to the first communication control apparatus 10 that is the transfer source.

  FIG. 4B shows an example in which new user information is registered in the terminal data D2 shown in FIG. FIG. 4B is an example of terminal data D2 when the accommodating terminal 101 of the first communication control device 10 is transferred to the second communication control device 20. In the example shown in FIG. 4B, “user terminal ID”, “user name”, and “password” are added as user information, and the accommodation state corresponding to this user information is “none”. The migration process is “present”. Note that the terminal data D2 illustrated in FIG. 4B corresponds to the terminal data D1 illustrated in FIG.

  When the location information registration unit 214 receives the user information transmitted from the migration source first communication control device 10, the location information registration unit 214 adds the received new location information to the terminal data D2 stored in the storage device 22, and the terminal data Update D2. In addition, the location information registration unit 214 transmits a registration completion notification that the registration of new location information has been completed to the first communication control apparatus 10 that is the migration source.

  FIG. 4C shows an example in which new location information is registered in the terminal data D2 shown in FIG. In the example shown in FIG. 4C, “location information” is added.

  When the service information registration unit 215 receives the service information transmitted from the first communication control device 10 that is the transfer source, the service information registration unit 215 adds the received new service information to the terminal data D2 stored in the storage device 22, and the terminal data Update D2. In addition, the service information registration unit 215 transmits a registration completion notification indicating that the registration of new service information has been completed to the first communication control apparatus 10 that is the migration source.

  FIG. 4D shows an example in which new service information is registered in the terminal data D2 shown in FIG. In the example shown in FIG. 4D, “forwarding service state” and “answering machine service state” are added as service information.

  When the transfer of the accommodation terminal is completed, the state update unit 216 updates the accommodation state from “none” to “present”. Here, the accommodation state update timing is the timing at which processing related to the terminal to which the incoming call processing unit 211 or the outgoing call processing unit 212 should have started, or a request for updating the accommodation state from the first communication control device 10 is received. It is the timing. The incoming call processing means 211 and the outgoing call processing means 212 execute processing with reference to the presence / absence of the accommodation state. However, when the accommodation terminal is migrated, the accommodation states of the migration source and the migration destination correspond as described above. There must be. Therefore, when the accommodation status of the terminal that has been migrated is changed from “present” to “none”, the first communication control device 10 that is the migration destination also changes the accommodation status of the same terminal from “none” to “present”. It needs to be changed. Therefore, when the accommodation state is updated at the timing when the processing is started by the incoming call processing unit 211 or the transmission processing unit 212, the state update unit 216 transmits a request for the first communication control device 10 to update the accommodation state. .

  The synchronization check means 217 periodically reads the terminal data D2 stored in the storage device 22, receives information included in the terminal data D1 from the first communication control device 10, and is included in the read terminal data D2. The information and the information included in the terminal data D1 received from the first communication control device 10 are collated to determine whether or not they match. If they do not match, the information that does not match is synchronized. Here, at least one of the synchronization check means 217 of the second communication control device 20 and the synchronization check means 117 of the first communication control device 10 transmits information and collates with the other. It is only necessary to share the collation result and synchronize the information that did not match.

  When the location information processing unit 218 receives a request (so-called Register request) for notifying the location information of each terminal from the accommodated terminals 201 to 203, the location information processing unit 218 updates the location information of the terminal data D2 according to the received request. It is.

  Next, the accommodation state update processing will be described with reference to the flowcharts shown in FIGS. In the communication control apparatuses 10 and 20 according to the present invention, the accommodation state of the terminal for which all the transition processing (steps S2 to S5 in FIG. 2) has been completed at the time of incoming call or outgoing call is updated.

  FIG. 5 is a flowchart for explaining processing (incoming processing) when the transfer-source first communication control apparatus 10 receives a request for a call from another terminal to the terminal 101. The incoming call processing unit 111 of the first communication control apparatus 10 determines whether the accommodation state of the terminal 101 is “present” at the time of receiving a request (S20).

  When the accommodation state of the terminal 101 as the destination terminal is “present” (YES in S20), the incoming call processing unit 111 determines that the incoming call is an incoming call to the accommodation terminal of the first communication control device 10, and The incoming call process is executed directly from the first communication control apparatus 10 to the terminal 101 (S21).

  Here, when the process of shifting the terminal 101 to the second communication control device 20 is not actually completed, the destination terminal 101 transmits a response to the first communication control device 10. Therefore, when there is a direct response from the terminal 101 to the incoming call process in step S21 (YES in S22), the first communication control device 10 continues the incoming call process started in step S21 (S23).

  On the other hand, when the processing of the transition of the terminal 101 to the second communication control device 20 has actually been completed, the destination terminal 101 does not transmit a response to the first communication control device 10, and the second communication control terminal A response is sent to 20. Therefore, the first communication control apparatus 10 does not receive a direct response from the terminal 101 to the incoming call processing in step S22 (NO in S22) and receives a response from the terminal 101 via the second communication control apparatus 20. (YES in S24) It is determined that the transition process of the terminal 101 to the second communication control device 20 is completed, and the state update unit 116 updates the accommodation state of the terminal 101 from “present” to “none” ( S25). Further, as described above, since the accommodation states of the first communication control device 10 that is the migration source and the second communication control device 20 that is the migration destination need to correspond, the second communication control device 20 accommodates the terminal 101. The state is updated from “none” to “present” (S26). Furthermore, since the incoming communication processing of the terminal 101 accommodated in the second communication control device 20 cannot be executed by the first communication control device 10 alone, the incoming call processing means 111 of the first communication control device 10 is the second communication control device. Incoming call processing is started via S20 (S27).

  When the accommodation state of the terminal 101 that is the destination terminal is “None” in step S20 (NO in S20), the incoming call processing means 111 indicates that the incoming call is not an incoming call to the accommodation terminal of the first communication control device 10 And a request for requesting execution of the incoming call processing is transmitted to the terminal 101 to the second communication control apparatus 20 at the transfer destination (S28).

  When no response is received from the terminal 101 via the second communication control device 20 in step S24 (NO in S24), the incoming call processing unit 111 interrupts this process because the process cannot be continued (S29).

  As described above, in the communication control devices 10 and 20 according to the present invention, when an incoming call is received at a terminal, the incoming call process is performed directly if the accommodation state of the terminal that is the incoming call is “present”. If there is no direct response from the terminal having the accommodation state “Yes” and there is a response from the terminal 101 via the communication control device 20, the accommodation state is updated and the communication control of the accommodation destination is performed. Incoming call processing is performed in cooperation with the device 20. Further, when the accommodation state of the terminal that is the destination is “None”, the communication control device 20 that is the transfer destination is caused to execute incoming processing.

  FIG. 6 shows a case where the first communication control apparatus 10 that is the migration source receives a request for requesting a call from the terminal 101 to another terminal (so-called INVITE request) and a request for updating location information (so-called Register request). It is a flowchart explaining the process (request process). In the following, in order to explain the processing (call processing) when a request for a call request is received, a case where the processing is performed by the call processing means 112 will be described as an example. However, in the case of a location information registration request, location information The location information processing unit 114 related to this performs each process.

  In the first communication control device 10, if the communication control device that is the transmission destination of the request included in the request at the time of receiving the request is its own device (YES in S <b> 31), the transmission processing unit 112 performs the processing requested by the request. It determines with it being the process target of a 1st communication control apparatus, and starts a normal request process (request process 1) (S32).

  On the other hand, when the transmission destination of the request is not the first communication control apparatus 10 but the second communication control apparatus 20 (NO in S31), the first communication control apparatus 10 sends a request process (request process 2) to the call processing means 212. Is started (S33).

  FIG. 7 is a flowchart for explaining the request processing 2 performed by the second communication control device 20 in step S33 in the flowchart of FIG. The transmission processing means 212 of the second communication control device 20 determines whether or not the accommodation state of the terminal 101 that is the transmission source terminal is “present” (S34).

  When the accommodation state of the terminal 101 that is the transmission source terminal is “present” in the second communication control device 20 (YES in S34), the transmission processing means 212 determines that the transmission is processing performed from the second communication control device 20. The process is continued (S35).

  On the other hand, in the second communication control device 20, when the accommodation state of the terminal 101 which is the transmission source terminal is “None” (NO in S34), in the case of the transition process “Yes” of the terminal 101, the state update unit 216 It is determined that the migration process of the terminal 101 to the second communication control device 20 is completed, and the accommodation state of the terminal 101 is updated from “none” to “present” (S36). In addition, since it is necessary to make the accommodation states of the second communication control device 20 that is the migration destination and the first communication control device 10 that is the migration source correspond to each other, the state update unit 216 accommodates the terminal 101 in the first communication control device 10. A request for updating the state from “present” to “not present” is transmitted (S37). Thereafter, the calling processing means 212 executes a calling process to the callee terminal (S38).

  As described above, in the communication control devices 10 and 20 according to the present invention, when the accommodation state of the terminal serving as the transmission destination is “None”, the transfer control of the corresponding terminal is “Yes”. On the premise of the above, a request process is performed and an accommodation state update process of the terminal is performed.

  In addition, according to the above description, the example in which the first communication control device 10 is the migration source and the second communication control device 20 is the migration destination is described. However, each communication control device 10, 20 is the migration source or It is not only compatible with one of the migration destinations. That is, although illustration is omitted, if the first communication control device 10 has the same function as the registration means 213 to 215 of the second communication control device 20, it becomes a transition destination, and the second communication control device 20 also performs the first communication. If it has the same function as the transmission means 113-115 of the control apparatus 10, it will become a transfer source.

  As described above, in the relay system 1 according to the present invention, the communication control devices 10 and 20 store the flags regarding the accommodation status of the terminals 101 to 103 and 201 to 203, and there is an incoming call to the accommodated terminal. Or when there is a call from the accommodated terminal, the process is executed with reference to the accommodated state flag. In addition, the update of the accommodation state is performed by the first communication control device 10 that is the migration source and the second communication control device 20 that is the migration destination when there is an incoming call to the migration terminal that has migrated the accommodation destination or a transmission from the migration terminal. Going at the same time.

  Therefore, in the relay system 1 according to the present invention, the terminal can be reliably transferred by a simple configuration and processing without interruption of service from the terminal.

DESCRIPTION OF SYMBOLS 1 ... Terminal call system 10,20 ... Communication control device 11,21 ... CPU
111 ... Incoming call processing means 112 ... Outgoing processing means 113 ... User information sending means 114 ... Location information sending means 115 ... Service information sending means 116 ... Status update means 117 ... Synchronization check means 118 ... Location information processing means 211 ... Incoming call processing means 212 ... transmission processing means 213 ... user information registration means 214 ... location information registration means 215 ... service information registration means 216 ... status update means 217 ... synchronization check means 218 ... location information processing means 12, 22 ... storage device D1 ... terminal data D2 ... Terminal data P1, P2 ... Communication control program 13, 23 ... Communication I / F
30 ... 1st network 40 ... 2nd network 101-103, 201-203, 51-53 ... terminal

Claims (9)

A first communication control device that controls communication between the accommodation terminal accommodated in advance and another terminal, and a second communication that accommodates a terminal different from the accommodation terminal of the first control device and controls communication of the accommodation terminal accommodated in advance A relay system having a control device,
The first communication control device
A first call processing means for establishing communication between the accommodation terminal and the other terminal upon receiving a request for a call between the accommodation terminal and the other terminal for which the accommodation state flag is set to containment;
When a change request for information on the accommodation terminal that changes the accommodation destination is input to the second communication control device, the terminal data on the accommodation terminal accommodated in the first communication control device stored in the first terminal data storage unit, Transmitting means for extracting information on the migration terminal to be processed in the change request and transmitting the information to the second communication control device as the migration destination;
When a request for requesting a call with the transition terminal is received after transmitting the data regarding the accommodation terminal, the flag regarding the accommodation state of the transition terminal is updated to accommodation when the flag regarding the accommodation state of the transition terminal is contained, and the second communication control A first updating means for transmitting a request for updating the accommodation state flag of the transition terminal from the non-accommodation state to the accommodation existence to the device,
The second communication control device
A first call processing means for establishing communication between the accommodation terminal and the other terminal upon receiving a request for a call between the accommodation terminal and the other terminal for which the accommodation state flag is set to containment;
When the information about the new accommodation terminal transmitted from the first communication control device is received, the received new terminal data about the accommodation terminal stored in the second communication control device stored in the second terminal data storage unit is received. Registration means for registering information about the accommodation terminal;
When a request for a call is received from the transition terminal after registering the data regarding the accommodation terminal, when the flag regarding the accommodation state of the transition terminal is not accommodation, the flag is updated to accommodation and the first communication control device And a second updating means for transmitting a request to update the accommodation state flag of the transition terminal from accommodation existence to accommodation absence. When the first update unit receives a request to update the accommodation state flag from the second communication control device, the first update unit updates the accommodation state flag held in the first communication control device,
The said 2nd update means will update the flag of the accommodation state currently hold | maintained in the 2nd communication control apparatus, if the request to update the flag of the accommodation state is received from the said 1st communication control apparatus. The relay system according to 1. The first communication control device transmits / receives information about the accommodation terminal to / from the second communication control device, and the information managed by the first communication control device and the second communication control device manage Synchronization means to synchronize information with
The second communication control device transmits / receives information on the accommodation terminal to / from the first communication control device, and the information managed by the second communication control device and the first communication control device manage The relay system according to claim 1, further comprising a synchronization unit that synchronizes the information with the information. A communication control device that controls incoming call processing from another terminal to the accommodation terminal accommodated in advance and controls outgoing processing from the accommodation terminal accommodated in advance to the other terminal,
A call processing means for establishing communication with the accommodation terminal and the other terminal upon receiving a request for a call between the accommodation terminal and the other terminal whose accommodation state flag is set to contain;
When a change request for information on the accommodation terminal that changes the accommodation destination to another communication control device is input, from the terminal data related to the accommodation terminal stored in the communication control device stored in the terminal data storage unit, the change request is processed Transmitting means for extracting information on the migration terminal to be transmitted to the other communication control device as the migration destination;
When a request for a call with the accommodation terminal is received after transmitting data related to the accommodation terminal, the flag regarding the accommodation state of the transition terminal is updated to containment when the flag regarding the accommodation state of the transition terminal is contained, and the other communication control is performed. Updating means for transmitting a request to update the accommodation state flag of the transition terminal from the non-accommodating state to the accommodating state to the device;
A communication control apparatus comprising: A communication control device that controls incoming call processing from another terminal to the accommodation terminal accommodated in advance and controls outgoing processing from the accommodation terminal accommodated in advance to the other terminal,
A call processing means for establishing communication with the accommodation terminal and the other terminal upon receiving a request for a call between the accommodation terminal and the other terminal whose accommodation state flag is set to contain;
When information on a new accommodation terminal transmitted from another communication control device is received, information on the received new accommodation terminal is added to the terminal data on the accommodation terminal accommodated in the communication control device stored in the terminal data storage unit. Registration means to register;
After registering data relating to the accommodation terminal, upon receiving a request for a call from the transition terminal, when the flag relating to the accommodation status of the transition terminal is not accommodation, the flag is updated to accommodation and the other communication control device Updating means for transmitting a request to update the flag of the accommodation status of the transition terminal from accommodation existence to accommodation absence;
A communication control apparatus comprising: A first communication control device that controls communication between the accommodation terminal accommodated in advance and another terminal, and a second communication that accommodates a terminal different from the accommodation terminal of the first control device and controls communication of the accommodation terminal accommodated in advance A terminal migration method in a relay system having a control device,
In the first communication control device, a step of inputting a change request for information on the accommodation terminal that changes the accommodation destination to the second communication control device;
In the first communication control device, information on the transition terminal to be processed in the change request is extracted from the terminal data on the accommodation terminal accommodated in the first communication control device stored in the first terminal data storage unit, Transmitting to the second communication control device to be the transfer destination;
In the second communication control device, receiving information related to a new accommodation terminal transmitted from the first communication control device;
In the second communication control device, registering the received information about the new accommodation terminal in the terminal data about the accommodation terminal accommodated by the second communication control device stored in the second terminal data storage unit;
In the first communication control device, after transmitting data relating to the accommodation terminal, upon receiving a request for requesting a call with the transition terminal, the flag regarding the accommodation state of the transition terminal is updated to containment when the flag regarding the accommodation state of the transition terminal is contained And steps to
In the first communication control device, a step of transmitting a request to update the accommodation state flag of the transition terminal from non-accommodation to accommodation existence to the second communication control device;
In the second communication control device, in accordance with the request, the step of updating the flag of the accommodation state from non-accommodation to possession,
A terminal transition method comprising: A first communication control device that controls communication between the accommodation terminal accommodated in advance and another terminal, and a second communication that accommodates a terminal different from the accommodation terminal of the first control device and controls communication of the accommodation terminal accommodated in advance A terminal migration method in a relay system having a control device,
In the first communication control device, a step of inputting a change request for information on the accommodation terminal that changes the accommodation destination to the second communication control device;
In the first communication control device, information on the transition terminal to be processed in the change request is extracted from the terminal data on the accommodation terminal accommodated in the first communication control device stored in the first terminal data storage unit, Transmitting to the second communication control device to be the transfer destination;
In the second communication control device, receiving information related to a new accommodation terminal transmitted from the first communication control device;
In the second communication control device, registering the received information about the new accommodation terminal in the terminal data about the accommodation terminal accommodated by the second communication control device stored in the second terminal data storage unit;
In the second communication control device, after registering data relating to the accommodation terminal, when receiving a request for a call from the transition terminal, the flag relating to the accommodation state of the transition terminal is updated to accommodation when the flag regarding the accommodation state of the transition terminal is not accommodation. Steps,
In the second communication control device, a step of transmitting a request for updating the accommodation state flag of the transition terminal from accommodation to non-accommodation to the first communication control device;
In the first communication control device, in accordance with the request, a step of updating the accommodation state flag from accommodation existence to accommodation absence;
A terminal transition method comprising: A first communication control device that controls communication between the accommodation terminal accommodated in advance and another terminal, and a second communication that accommodates a terminal different from the accommodation terminal of the first control device and controls communication of the accommodation terminal accommodated in advance A communication control program in a relay system having a control device,
Inputting a change request for information on the accommodation terminal that changes the accommodation destination to the second communication control device;
From the terminal data relating to the accommodation terminal accommodated by the first communication control device stored in the terminal data storage unit, information relating to the migration terminal to be processed by the change request is extracted, and the second communication control device serving as the migration destination is extracted. Sending, and
After receiving the request for a call with the transition terminal after transmitting the data regarding the accommodation terminal, when the flag regarding the accommodation state of the transition terminal is accommodation, the step of updating to accommodation,
Transmitting a request to update the accommodation state flag of the transition terminal from non-accommodating to accommodating existence to the second communication control device;
Is executed by a computer serving as the first communication control apparatus. A first communication control device that controls communication between the accommodation terminal accommodated in advance and another terminal, and a second communication that accommodates a terminal different from the accommodation terminal of the first control device and controls communication of the accommodation terminal accommodated in advance A communication control program in a relay system having a control device,
Receiving information on a new accommodation terminal from the first communication control device;
Registering the received information on the new accommodation terminal in the terminal data on the accommodation terminal accommodated in the second communication control device stored in the terminal data storage unit;
After registering data relating to the accommodation terminal, upon receiving a request for a call from the transition terminal, when the flag regarding the accommodation state of the transition terminal is not accommodation, updating to accommodation,
Transmitting a request to update the accommodation state flag of the transition terminal from accommodation existence to accommodation absence to the first communication control device;
Is executed by a computer serving as the second communication control device.

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