JP2005217857A - Distribution type server system, and call information management method in distribution type server system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a distribution type server system capable of reducing concentration of communication onto a database server even when many call processing servers simultaneously receiving an event exist. <P>SOLUTION: In the distribution type server system 10 provided with: distribution type servers 12 for carrying out line connection between a caller terminal and a called terminal on the basis of call information to identify the caller terminals 13 from the distribution type server to which the terminal is connected and call information to identify the caller terminals 13 from the distribution type server to which the terminal is connected; and a database server 11 for storing the call information of the entire system, the distribution type server generates counter call information cross-referencing the call information of the called party to the call information of the caller and stores it and thereafter acquires new call information from the database server to make line connection when receiving an event requiring the new call information from a communication terminal during communication. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a distributed server system including a call information processing server and a database server that perform connection control between terminal devices based on call information, and a call information management method in the distributed server system.

For example, an IP phone such as an IP terminal is connected to a call processing server, which is a distributed server, as a terminal device. The call processing server controls line connection between the IP telephones based on the call source call information for identifying the IP telephone and the call destination call information.
By the way, the call information is held and managed by the database server to which the call processing server is connected. When a call is made with each IP phone, the call processing server sends the call information of the caller IP phone and the called party. IP phone call information is acquired from the database server, and line connection between the IP phones is controlled based on the acquired call information.

  After the line between the IP telephones is connected, when the user performs an operation such as hooking or holding, an event corresponding to the operation is output from the IP telephone to the call processing server. Upon receiving the operation event, the call processing server accesses the database server to perform processing according to the event, and acquires call information. The call processing server that has acquired the call information refers to the call information and performs control according to the event content.

  By the way, a plurality of the above-described call processing servers are provided for connecting a large number of IP phones. In other words, a plurality of call processing servers are connected to one database server. Accordingly, the call information of each terminal device is managed by a single database server, and distributed processing by a plurality of call processing servers is performed, whereby line connection between a large number of IP telephones can be controlled.

However, when a large number of call processing servers receive an event from an IP phone at the same time, there is a risk that access for acquiring call information from each call processing server to one database server will be concentrated, which is a problem. It was.
Accordingly, an object of the present invention is to provide a distributed server system capable of reducing communication concentration on a database server even when there are a large number of call processing servers that simultaneously receive events, and management of call information in the distributed server system. And to provide a method.

The present invention adopts the following configuration in order to solve the above points.
Call information for identifying a call source terminal device and a distributed server to which the terminal device is connected, a call destination terminal device, and a distributed server to which the terminal device is connected In a distributed server system comprising: a distributed server that performs line connection between a calling source terminal device and a called terminal device based on call information; and a database server that holds call information of the entire system. The distributed server generates and holds call information in which call information of a callee is associated with call information of a caller when performing the line connection, and then an event that requires new call information is generated. When received from a communication terminal device in communication, the new call information is acquired from the database server and line connection is performed.

  The database server holds the call information from the distributed server.

  In response to a rescue request from the terminal device that has detected the failure, the distributed server accepts the communication line managed by the distributed server to which the terminal device that has detected the failure is connected before the occurrence of the failure. Call information acquired and held from a distributed server is acquired from the database server.

  Call information for identifying a call source terminal device and a distributed server to which the terminal device is connected, a call destination terminal device, and a distributed server to which the terminal device is connected Call information in a distributed server system comprising: a distributed server that performs line connection between a call source terminal device and a call destination terminal device based on call information; and a database server that holds call information for the entire system. In the management method, the distributed server generates and holds call information in which call information of a callee is associated with call information of a caller when performing the line connection, and the call information When the distributed server receives an event requiring new call information from a communicating terminal device in communication, the distributed server obtains the new call information from the database server and performs line connection. Features.

  The database server holds the call information from the distributed server, and the distributed server is connected to the terminal device that has detected the failure in response to a rescue request from the terminal device that has detected the failure. In order to accept a communication line managed by the distributed server, the call information acquired and held from the distributed server before the occurrence of a failure is acquired from the database server.

  According to the distributed server system of the present invention, when the distributed server performs line connection control, it generates and holds call information in which call information of a callee is associated with call information of a caller, When an event is received, the call information is acquired from the database server only when new call information is required. Therefore, the number of accesses to the database server due to the event can be reduced. Communication concentration can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, in the distributed server system 10 of the present invention, a plurality of call processing servers 12 are connected to a database server 11, and an IP phone 13 such as an IP terminal is connected to each call processing server 12 as a terminal device. Many are connected.

  The database server 11 includes a database 14 common to the systems. This database 14 holds each call information of each IP phone 13 in the entire system. The call information includes at least terminal identification information including a hard number (serial number) and a call number of the IP telephone for identifying the IP telephone, and a call processing server for identifying the call processing server 12 to which the IP telephone is connected. And is referred to when line connection control is performed by the call processing server 12 to be described later.

Further, the database server 11 associates a communication function for outputting call information in response to a request from the call processing server 12 with call information of the caller and call information of the callee at the call processing server 12. A function of acquiring call information from the call processing server 12 and temporarily holding and managing the call information.
The call information associated with the call information of the caller and the call information of the callee temporarily held in the call database server is deleted based on an instruction from the call processing server 12, and a relief process described later is performed. In response to the request from the call processing server 12 at the rescue destination, the stored call information is output to the call processing server 12 at the rescue destination.

As shown in FIG. 2, the call processing server includes a communication unit 121, an event control unit 122, a storage unit 123, a connection control unit 125, a failure relief unit 126, and a control unit that comprehensively controls each unit. 124.
The communication unit 121 has a function of communicating with a plurality of IP telephones 13, the database server 11, and each call processing server 12 other than the call processing server via a transmission path.

  When the event control unit 122 acquires event information from the IP phone 13 in communication via the communication unit 121, the event control unit 122 determines whether the event needs to acquire new call information. In this determination, when the event requires new call information, the event control unit 122 performs control to request the necessary call information from the database server 11 via the communication unit 121.

  For example, the event control unit 122 that has acquired event information indicating events such as dialing, hooking, and holding during a call does not perform control for acquiring new call information. On the other hand, the event control unit 122 that has acquired event information indicating an event such as transfer or proxy response received by another person performs control to acquire new call information necessary for transfer control or proxy response control. As a result, access to the database server 11 is performed only when call information is required without accessing the database server 11 for each event, so that the amount of communication between the call processing server 12 and the database server 11 can be reduced. Can do.

  The storage unit 123 (call processing server memory) holds call information in which call source call information acquired from the database server 11 is associated with call destination call information. Accordingly, the storage unit 123 holds call information for each connected line. The call information stored in the storage unit 123 is transmitted to the database server 11 and temporarily stored and managed by the database server 11.

The connection control unit 125 performs connection control of a telephone line called a call connection and IP phone recognition control called a control connection.
The call connection is control for performing peer-to-peer connection between the caller IP phone and the callee IP phone, and the control connection recognizes an IP phone whose load is distributed by a load balancer or the like. That is, the connection control unit 125 performs recognition processing of the IP phone 13 connected to the call processing server 12, in other words, the IP phone 13 to be managed by the call processing server 12.

The connection control unit 125 acquires the hardware number assigned to the IP phone 13 from the recognized IP phone 13 and stores the hardware number in the storage unit 123. Therefore, by referring to the hardware number of the storage unit 123, the IP telephone 13 being managed by the call processing server 12 can be grasped.

  By the way, when the event control unit 122 of the call processing server 12 outputs the hard number acquired by the connection control unit 125 to the database server 11 via the communication unit 121, the event control unit 122 searches the database 14 of the database server 11 based on the hard number. It has a function of acquiring the obtained call information from the database server 11 via the communication unit 121.

The connection control unit 125 has a function of accepting a connection of an IP telephone that is connected to a failed call processing server when an abnormality occurs in another call processing server.
When the IP telephone connected to the call processing server in which the failure has occurred recognizes that the connection cannot be confirmed, the IP telephone requests connection to another call processing server that is operating normally and requests connection relief. Upon receiving the failure relief request, the connection control unit 125 performs recognition processing of the IP telephone 13 that has requested relief and acquires a hardware number, and then outputs a relief control instruction to the failure relief unit 126.

  Upon receiving the relief control instruction from the connection control unit 125, the failure relief unit 126 acquires the hardware number assigned to the IP phone 13 that has requested relief. Then, the failure relief unit 126 performs control to output relief information indicating failure relief together with the hardware number to the database server 11 via the communication unit 121. When the database server 11 that has acquired the rescue information together with the hardware number identifies the call information corresponding to the hardware number from the stored call information, the database server 11 outputs the call information to the call processing server 12 that is the rescue destination.

  The connection control unit 125 that has acquired the call information from the call processing server 12 via the communication unit 121 causes the storage unit 123 to store the acquired call information. As a result, even if a failure occurs in the call processing server 12 in communication, the call processing server 12 in which the failure has occurred in the call processing server 12 that is operating normally can acquire call information during communication. Based on the acquired call information, it is possible to accept the line connection between IP telephones that are being communicated and managed by the call processing server 12 in which the call has occurred, and it is possible to repair the failure.

Next, the operation of the distributed server system 10 of the present invention will be described with reference to FIG.
The operation at the time of calling / incoming call, the operation at the time of calling and the operation at the time of disconnection will be described in order.
The call processing server 12 performs connection control in order to recognize the IP phone 13 to be managed. As a result, the call processing server 12 acquires the hardware number of the connected IP phone 13.
The call processing server 12 determines whether or not the IP phone is to be managed based on the acquired hardware number. This determination is made with reference to management permission information in which a hardware number is associated with management availability. This management permission information is set by an administrator of the call processing server 12 so as to be held in the call processing server 12 in advance.

  The call processing server 12 that has recognized the connection of the IP phone 13 to be managed by the above determination identifies the terminal identification information including at least the hardware number and the call number of the IP phone 13 and the call processing server that manages the IP phone 13. Call information including call processing server identification information for generating the call information is generated. The generated call information is held in the storage unit 123 of the call processing server 12, transmitted from the call processing server 12 to the database server 11, and held in the database 14 of the database server 11.

  When a call is made from the IP phone 13 after the connection control is performed, the call processing server 12 stores the call source call information held in the storage unit 123 based on the call source call number. Identify. The call processing server 12 adds the billing information and the called party call number transmitted from the caller IP telephone 13 to the specified call information, and generates caller call information anew. The generated call information is held in the storage unit 123.

  When generating call source call information, the call processing server 12 obtains call destination call information from the database server 11 based on the call destination call number. The call destination call information is generated when the call processing server 12 that manages the call destination IP telephone 13 performs connection control of the call destination IP telephone 13, and the call information is the call destination IP telephone. Is transmitted from the call processing server 12 that manages the database to the database server 11 and held in the database 14 of the database server 11.

When the call processing server 12 acquires the call source call information and the call destination call information, the call processing server 12 generates call information in association with the call information, and holds the call information in the storage unit 123. To do.
This call information is held in the call processing server 12 that manages the caller IP telephone, but this call information is also generated and held in the call process server 12 that manages the caller IP telephone 13. Is done.
That is, when the call processing server 12 that manages the call source IP phone requests the call processing server 12 that manages the call destination IP phone 13 to connect to the call destination IP phone 13. The call processing server 12 managing the call destination IP phone 13 specifies the call source IP phone 13 whose call information corresponding to the call number of the call destination identifies the call destination IP phone 13 and obtains by the line connection request. Based on the call number of the IP phone 13, call destination call information is acquired from the database server 11, and call information in which the call destination call information is associated with the call source call information is generated, The call information is held (calling / calling phase).

  When call information is generated by the call processing server 12 on the calling side and the call processing server 12 on the called side and a call is started, each call information is output to the database server 11 and the database of the database server 11 14 is held. That is, the database 14 of the database server 11 acquires and holds the call information generated by the call processing server 12 on the calling side and the call information generated by the call processing server 12 on the called side ( Busy phase).

Here, the operation of the call processing server 12 that has acquired events such as hold, on-hook, and transfer from the caller IP phone 13 during a call will be described.
The event control unit 122 that has acquired the event acquired through the communication unit 121 determines whether the event needs to acquire new call information in order to perform control corresponding to the event.

For example, when there are events such as dialing, holding, on-hook, and the like, since no new call information is required in these events, the event control unit 122 does not access the database server 11 and performs various events. Perform the corresponding control.
On the other hand, for example, when there are events such as transfer and proxy response, since new call information is required in these events, the event control unit 122 communicates with the communication unit to obtain the necessary call information from the database server 11. 121 is started. The event control unit 122 that has acquired the call information from the database server 11 by this control performs control such as transfer and proxy response using the acquired call information.

  As described above, since the event control unit 122 accesses the database server 11 only when new call information is required, the number of accesses between the call processing server 12 and the database server 11 is reduced. be able to.

  Next, an operation when a communication line is disconnected from, for example, the destination IP phone 13 during a call will be described. When the communication line is disconnected from the destination IP phone 13, the call source server 12 that has detected the communication line deletes the call information stored in the call processing server 12, and also the database server. 11 is output to the database server 11. Upon receiving the deletion request, the database server 11 deletes the requested call information from the database 14. Similarly, the call processing server 12 on the calling side that has detected the disconnection of the communication line disconnects the communication line with the caller IP telephone 13 and deletes the generated call information. Further, the call processing server 12 on the calling side outputs a request for deleting the call information generated by the call processing server 12 from the database 14 to the database server 11 (disconnection phase).

Here, an operation for relieving a failure in the call processing server 12 during the call phase will be described with reference to FIG.
When an abnormality occurs in the call processing server 12 and the IP phone 13 managed by the call processing server 12 and the call processing server recognizes that the call cannot be confirmed, the other IP call 13 is operating normally. Ask the server for connection relief.

  That is, when the IP telephone 13 connected to the call processing server 12 in which the failure has occurred recognizes that the connection cannot be confirmed, the IP telephone 13 outputs a rescue request to another call processing server that is operating normally. The call processing server 12 that has received the repair request performs connection control of the IP telephone 13 that has requested the repair by the connection control unit 125. That is, recognition processing of the IP phone 13 that has requested relief is performed, and the hardware number is acquired.

After completing the connection control, the connection control unit 125 instructs the failure relief unit 126 to perform relief control.
Upon receiving the instruction, the failure relief unit 126 refers to the storage unit 123 and determines whether or not the call information of the IP telephone 13 that has requested relief is already held.

  The occurrence of a failure may occur in the transmission path in addition to the call processing server 12. For example, the call processing server 12 that manages the IP phone 13 is operating normally, and the IP phone 13 also requests failure relief even when noise occurs on the transmission line and the line is temporarily disconnected. . In such a case, even if the line is temporarily interrupted, noise may be removed from the transmission line and the line state in the transmission line may be recovered before the failure relief from the IP telephone 13 is requested. . In such a case, the IP telephone 13 may request the call processing server 12 that was originally managed to make a repair request to the request destination for the fault repair. In such a case, the call processing server 12 that has requested the relief already stores the call information of the IP phone 13 that has requested the relief in the storage unit 123. finish.

  On the other hand, when the call information of the IP phone 13 that has requested relief is not held, the failure relief unit 126 determines whether the database server 11 holds the call information of the IP phone 13 that has requested relief. Is instructed to the database server 11 to check the presence / absence of the call information of the IP phone 13 that has requested relief.

  Upon receiving the instruction, the database server 11 refers to the database 14 to check the presence / absence of the call information of the IP telephone 13 that has requested relief, and outputs the result to the call processing server 12. The failure relief unit 126 of the call processing server 12 that has received the investigation result disconnects the line so as to disconnect the line from the IP telephone 13 that has requested the relief when the call result does not hold the call information. Run the phase.

  On the other hand, when the call information is held in the investigation result from the database server 11, the failure relief unit 126 controls the communication unit 121 in order to acquire the call information from the database server 11. The call information held in response to this request is output from the database server 11 to the call processing server 12. The failure relief unit 126 that has acquired the call information of the IP telephone 13 that has requested relief via the communication unit 121 uses the call processing server identification information indicating the failure call processing server 12 in the call information to provide relief. New call information replaced with call processing server identification information indicating the previous call processing server 12 is generated. As a result, the line of the IP telephone 13 that has requested relief can be connected based on the newly generated call information.

  The failure relief unit 126 activates the communication unit 121 so that the generated call information is held in the storage unit 123 and also held in the database 14 of the database server 11. As a result, even if a failure occurs in the call processing server 12 that is the rescue destination, the failure can be relieved by another call processing server 12 that is operating normally.

  As described above, according to the distributed server system 10 of the present invention, when the call processing server 12 performs incoming / outgoing control, the call information of the call source is associated with the call information of the call destination. Call information is generated and managed, and when an event is received during communication, the event control unit 122 determines whether the event requires new call information, and requires new call information. Only when the call information is acquired from the database server 11. Thereby, since access to the database server 11 is performed only when new incoming call information is required, the number of accesses to the database server 11 due to events can be reduced, and communication concentration on the database server 11 can be reduced. Can be reduced.

  Furthermore, according to the distributed server system 10 of the present invention, the call processing server 12 generates the call information of the IP phone 13 that is communicating, and holds the call information in the database server 11 as well as the failure relief request. Is received by the call processing server 12 that is operating normally, the connection control unit 125 of the call processing server 12 performs the connection control of the IP telephone 13, and the failure relief unit 126 requests the relief of the failure. Since the call information of the IP phone 13 is acquired from the database 14 of the database server 11 and the communication line is connected based on the acquired call information, it is managed by the call processing server 12 where the failure has occurred. The line connection of the IP telephone 13 can be relieved.

  In the above-described embodiment, an IP telephone has been described as an example. However, a distributed server system may be constructed using IP terminals other than the IP telephone and various terminal devices having a communication function.

It is a block diagram of the distributed system of this invention. It is a block diagram of a call processing server. It is a figure which shows operation | movement of the distributed system of this invention. It is a figure which shows the relief operation at the time of failure occurrence.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Distributed server system 11 Database server 12 Call processing server 13 IP telephone 14 Database

Claims (5)

Call information for identifying a call source terminal device and a distributed server to which the terminal device is connected, a call destination terminal device, and a distributed server to which the terminal device is connected In a distributed server system including a distributed server that performs line connection between a calling source terminal device and a called terminal device based on call information, and a database server that holds call information of the entire system,
When the distributed server performs the line connection, an event that requires new call information after generating and holding call information in which call information of a callee is associated with call information of a caller is generated. Is received from a communication terminal device in communication, the new call information is acquired from the database server and a line connection is established.   The distributed server system according to claim 1, wherein the database server holds the call information from the distributed server.   In response to a rescue request from the terminal device that has detected the failure, the distributed server accepts the communication line managed by the distributed server to which the terminal device that has detected the failure is connected before the occurrence of the failure. 3. The distributed server system according to claim 2, wherein call information acquired and held from the distributed server is acquired from the database server. Call information for identifying a calling terminal device and a distributed server to which the terminal device is connected, a call destination terminal device, and a distributed server to which the terminal device is connected Call information in a distributed server system comprising: a distributed server that performs line connection between a call source terminal device and a call destination terminal device based on call information; and a database server that holds call information for the entire system. In the management method of
The distributed server generates and holds call information in which call information of a callee is associated with call information of a caller when performing the line connection;
After holding the call information, when the distributed server receives an event requiring new call information from a communication terminal device in communication, the distributed server acquires the new call information from the database server and connects to the line. Call information management method in a distributed server system. The database server holds the call information from the distributed server,
In response to a rescue request from the terminal device that has detected the failure, the distributed server accepts the communication line managed by the distributed server to which the terminal device that has detected the failure is connected before the occurrence of the failure. 5. The call information management method in a distributed server system according to claim 4, wherein the call information acquired and held from the distributed server is acquired from the database server.

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