JP4895024B2 - Communication control method, communication control program, communication control system, and communication control server - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication control method by which, when a fault occurs in communication with an opposed device, a service stop time of a communication controller from the occurrence of the fault to recovery is shortened by attempting the step-by-step recovery for a communication interface and the communication controller. <P>SOLUTION: The communication controller is connected with the opposed device and is provided with a communication interface coupled to the opposed device and a communication interface management section for controlling the communication interface, and when the communication interface management section receives a signal with a fault occurring in communication with the opposed device, the communication interface management section first attains fault removal by transmitting a re-initiation signal to the communication interface to re-initiate the communication interface. Only when the communication interface management section does not receive an initiation completion notice signal from the communication interface after the lapse of a predetermined time from the transmission of the re-initiation signal, the communication controller is re-initiated step by step, thereby a communication interruption time of the entire communication controller is shortened. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention provides a communication control device equipped with a communication interface coupled to a counter device, and attempts to recover the communication interface and the communication control device in stages when a failure occurs in communication with the counter device. The present invention relates to a communication control method, a communication control program, a communication control system, and a communication control server for shortening a service stop time of the communication control apparatus until recovery from a failure.

  Conventionally, when the SS7 (Signaling System No. 7) line termination device and the signal processing device are configured as separate devices in the common line signal system, there is a problem that the installation area and the introduction / maintenance cost increase.

  In order to solve these problems, a system design using a blade server in which the SS7 line termination function and the signal processing function are degraded has been devised.

  In a blade server with a degraded SS7 line card device, if the failure management function unit on the blade server detects a failure in the SS7 line card device, there is a possibility of a failure due to a software factor. Is possible.

  However, restarting a blade server equipped with an SS7 line card device involves restarting the blade server itself compared to restarting an SS7 line termination device in a configuration in which the SS7 line termination device and the signal processing device are separate devices. Therefore, there is a problem that the service interruption time becomes long.

  In addition, when the blade server itself restarts, a service that uses an SS7 line card device that has not detected a failure when a plurality of SS7 line card devices are mounted, or a service that does not use an SS7 line card device. There is a problem that interrupts.

  On the other hand, Patent Document 1 discloses a media gateway that performs necessary media format conversion between an existing circuit switching network and an IP (Internet Protocol) network, and a call on the IP network side by controlling each media gateway. In a gateway system that provides an IP network service via a circuit switching network using a plurality of media gateway controllers that perform connection control and a signaling gateway that provides a signaling transfer function between the circuit switching network and the IP network, When a failure occurs on the media gateway controller side, the signaling gateway has a function to request the opposite station of the circuit switched network to block the line controlled by the media gateway controller. By assigning a signaling station code that is used as a message routing address, even if a failure occurs on the media gateway controller side, it is possible to prevent call loss and inability to access the signaling station code. It is configured to be able to. That is, it has a feature of giving a signaling station code used as a routing address of a signaling message to a signaling gateway, and a method for solving a failure by a signal has been proposed.

  On the other hand, Patent Document 2 is generated in each unit having intelligent circuits such as a line interface unit, a line control unit, and a device control unit in a terminal device connected to a center device via an ISDN (Integrated Service Digital Network) line network. The monitoring means for detecting the failure, the reset means for resetting each part having the intelligent circuit when the failure is detected by the monitoring means, and the parts having the intelligent circuit are reset by the reset means. Thereafter, there is disclosed a terminal device characterized by comprising initialization means for initializing by setting initial values in each of these parts, and resetting the faulty part and then initializing the fault It is configured to automatically restart the device without it Therefore, even if recoverable fault occurs in the terminal device has a feature that recovered in a short time by a reset and initialization becomes so perform data transmission and reception.

JP 2002-290551 A JP-A-3-250835

  However, when a failure occurs, it is not always easy to specify the failure occurrence location. Here, resetting the apparatus to the initial state by restarting is an effective failure solving method. However, it is not easy to specify a location to be restarted, and it is often necessary to restart a plurality of times.

  Furthermore, it takes more time than necessary to restore the failure if the reboot is performed multiple times in the dark clouds. Therefore, it is most preferable to restart the optimum portion, and it is preferable that the area to be restarted is the minimum necessary. In addition, even when a plurality of restarts are required, it is necessary to minimize the delay in the recovery time by giving priority to restart of the minimum area.

  For example, in Patent Document 1, it is necessary to restart an optimum failure location when performing recovery by restart. However, it is not easy to identify the failure location. In addition, if the image is not restored by a single restart, multiple restarts may be required. In this case, the restart procedure needs to be clear.

  Furthermore, in Patent Document 2, it is easy to specify a location to be restarted by the state monitoring unit. However, this configuration is not necessarily resolvable when the same part is restarted a plurality of times. Whether multiple restarts are necessary or not is not easily determined because of the cause of the failure. For this reason, it is possible to recover the failure by performing a minimum restart by limiting the restart points. However, the method disclosed in Patent Document 2 cannot always cope with it clearly.

  Accordingly, an object of the present invention is to gradually recover the communication interface and the communication control device when a failure occurs in communication with the opposite device in a communication control device equipped with a communication interface coupled to the opposite device. It is to provide a communication control method, a communication control program, a communication control system, and a communication control server that shorten the service stop time of the communication control apparatus until recovery from a failure by trying.

  In order to solve the above problems, a communication control method according to the present invention includes, in a communication control device connected to a counter device, a communication interface coupled to the counter device, and a communication interface management unit that controls the communication interface. When the communication interface management unit receives a signal indicating a failure in communication with the opposite device, the communication interface management unit first transmits a restart signal to the communication interface to restart the communication interface. The communication interface management unit restarts the entire communication control unit in stages only when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission from the communication interface. The communication interruption time of the entire control device is shortened.

  Further, other functional blocks of the communication control device may continue to operate while the communication interface is restarted.

  Furthermore, the communication control device transitions to the communication control device failure when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission even by restarting the entire communication control device. Also good.

  In addition, the communication control device may stop communication with the opposite device before transitioning to the communication control device failure.

  Subsequently, the communication interface further includes an internal block therein, and when the communication interface management unit receives a signal indicating a failure in communication with the opposite device, the communication interface management unit first performs the communication. The communication interface internal block may be restarted by transmitting a restart signal to the interface internal block to eliminate the failure.

  Next, the communication interface management unit includes a communication interface management process as its internal process program, and when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission from the communication interface, The communication interface management process may be restarted to remove the failure.

  On the other hand, a plurality of communication interfaces may be provided, and the other communication interface may continue to operate while one communication interface is restarted.

  In addition, the communication control device can be mounted with a plurality of server devices and is configured with a blade server having a common power supply and fan so that the communication control device is compactly manufactured and can restart a plurality of devices at the same time. And

  Furthermore, the communication interface is No. 7 is a communication interface circuit for connection of the common line signal system. 7 Common line signal network and IP network are connected.

  A communication control program according to the present invention comprises a communication interface coupled to a counter device and a communication interface management unit that controls the communication interface in a communication control device connected to the counter device. The communication interface management unit first transmits a restart signal to the communication interface to restart the communication interface and remove the failure when receiving a signal indicating that the communication with the opposite device has failed And the communication interface management unit restarts the entire communication control device stepwise only when the activation completion notification signal is not received from the communication interface after a predetermined time of transmission of the restart signal. The steps to reduce the interruption time And butterflies.

  Further, the other functional blocks of the communication control device continue to operate while the communication interface is restarted.

  Further, the communication control device transitions to the communication control device failure when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission even by restarting the entire communication control device. It is characterized by.

  In addition, the communication control device stops communication with the opposite device before making a transition to the communication control device failure.

  Subsequently, the communication interface further includes an internal block therein, and when the communication interface management unit receives a signal indicating a failure in communication with the opposite device, the communication interface management unit first performs the communication. The communication interface internal block is restarted by transmitting a restart signal to the interface internal block to eliminate the failure.

  Next, the communication interface management unit includes a communication interface management process as its internal process program, and when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission from the communication interface, The communication interface management process is restarted to eliminate the failure.

  On the other hand, a plurality of communication interfaces are provided, and the other communication interface continues to operate while one communication interface is restarted.

  In addition, the communication control device can be mounted with a plurality of server devices and is configured with a blade server having a common power supply and fan so that the communication control device is compactly manufactured and can restart a plurality of devices at the same time. And

  Furthermore, the communication interface is No. 7 is a communication interface circuit for connection of the common line signal system. 7 Common line signal network and IP network are connected.

  In addition, the communication control system according to the present invention includes a communication interface including a counter device and a communication control device connected to the counter device, a communication interface coupled to the counter device, and a communication interface that controls the communication interface. A management unit, and when the communication interface management unit receives a signal that causes a failure in communication with the opposite device, the communication interface management unit first transmits a restart signal to the communication interface, The function of resuming the communication interface by restarting the communication interface, and the entire communication control apparatus in stages only when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission from the communication interface When communication of the entire communication control device is interrupted by restarting Characterized in that it comprises a function to shorten the.

  Subsequently, the other functional blocks of the communication control device continue to operate while the communication interface is restarted.

  Next, the communication control device makes a transition to the communication control device failure when a start completion notification signal is not received after a predetermined time of restart signal transmission even by restarting the entire communication control device.

  On the other hand, the communication control device stops communication with the opposite device before making a transition to the communication control device failure.

  The communication interface further includes an internal block inside the communication interface. When the communication interface management unit receives a signal indicating a failure in communication with the opposite device, the communication interface management unit first selects the communication interface. The communication interface internal block is restarted by transmitting a restart signal to the internal block to eliminate the failure.

  Furthermore, the communication interface management unit includes a communication interface management process as its internal process program, and the communication interface management unit receives the activation completion notification signal after a predetermined time of restart signal transmission from the communication interface. The interface management process is restarted to eliminate the failure.

  In addition, a plurality of the communication interfaces are provided, and the other communication interface continues to operate while one of the communication interfaces is restarted.

  Subsequently, the communication control device can be mounted with a plurality of server devices, and is composed of a blade server with a common power supply and fan so that the communication control device can be manufactured in a compact manner and can restart a plurality of devices at the same time. Features.

  Next, the communication interface is No. 7 is a communication interface circuit for connection of the common line signal system. 7 Common line signal network and IP network are connected.

  On the other hand, the communication control server according to the present invention includes a communication interface coupled to the opposite device and a communication interface management unit that controls the communication interface in the communication control server connected to the opposite device, and the communication interface. When the management unit receives a signal indicating a failure in communication with the opposite device, the communication interface management unit first sends a restart signal to the communication interface to restart the communication interface and remove the failure. And the entire communication control server by gradually restarting the entire communication control server only when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission from the communication interface. A function to reduce the communication interruption time of And butterflies.

  The other functional blocks may continue to operate while the communication interface is restarted.

  Further, even if the entire restart is performed, the communication interface management unit transitions to the communication control device failure when the communication interface management unit does not receive the start completion notification signal after a predetermined time of restart signal transmission.

  In addition, communication with the opposite device is stopped before transitioning to a failure of the main body.

  Subsequently, the communication interface further includes an internal block therein, and when the communication interface management unit receives a signal indicating a failure in communication with the opposite device, the communication interface management unit first performs the communication. The communication interface internal block is restarted by transmitting a restart signal to the interface internal block to eliminate the failure.

  Subsequently, the communication interface management unit includes a communication interface management process as its internal process program, and the communication interface management unit receives the start completion notification signal after a predetermined time of restart signal transmission from the communication interface. The communication interface management process is restarted to eliminate the failure.

  Next, a plurality of the communication interfaces are provided, and the other communication interface continues to operate while one of the communication interfaces is restarted.

  On the other hand, the communication control device can be mounted with a plurality of server devices and is configured with a blade server having a common power supply and fan so that the communication control device is compactly manufactured and can restart a plurality of devices simultaneously. And

  The communication interface is No. 7 is a communication interface circuit for connection of the common line signal system. 7 Common line signal network and IP network are connected.

  The communication control method according to the present invention includes, in a communication control device connected to a counter device, a communication interface coupled to the counter device, and a communication interface management unit that controls the communication interface. When the communication interface management unit receives a signal that causes a failure in communication with the opposite device, the communication interface management unit first transmits a restart signal to the communication interface to restart the communication interface to remove the failure, The communication interruption time of the entire communication control device by restarting the entire communication control device in stages only when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission from the communication interface. By shortening the It is possible to minimize the occurrence time of the failure, outage time by restarting the minimum locations is minimized, not reboot or necessary, it is possible to prevent communication interruption.

  Further, since the other functional blocks of the communication control device continue to operate while the communication interface is restarted, the communication interface is restored by restarting a necessary part while ensuring the operation of the other functional blocks. Damage caused by the control device can be minimized.

  The communication control device transitions to the communication control device failure when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission even by restarting the entire communication control device. When recovery is performed by restarting some circuits, recovery is possible by restarting a minimum part in a minimum time. On the other hand, when the activation completion notification signal does not return, drastic restart is possible by further restart.

  The communication control device can prevent sudden signal interruption due to restart by stopping communication with the opposite device before transitioning to the communication control device failure.

  The communication interface further includes an internal block in the communication interface. When the communication interface management unit receives a signal indicating a failure in communication with the opposite device, the communication interface management unit first starts the communication interface internal block. The communication interface internal block is restarted by sending a restart signal to the fault to eliminate the fault, so that the fault is not caused by the malfunction of the entire communication interface but is caused by a partial failure. When the problem is solved by only restarting, the restarting part can be limited to the minimum necessary, and the communication interruption time can be limited to the minimum.

  The communication interface management unit includes a communication interface management process as its internal process program, and the communication interface management unit receives the activation completion notification signal after a predetermined time of restart signal transmission from the communication interface. If the failure is caused by the communication interface management process by restarting the process and the failure is removed by restarting the communication interface management process, the communication is stopped by restarting. Damage can be minimized.

  Multiple communication interfaces are provided, and when one communication interface restarts, the other communication interface continues to operate, so even when a failure occurs, the operable interface can be used to minimize the impact of the failure. Limit.

  The communication control device can be equipped with multiple server devices and is composed of a blade server with a common power supply and fan so that it can be compactly manufactured and multiple devices can be restarted simultaneously. And the occupied space for each server can be minimized.

  The communication interface is No. 7 is a communication interface circuit for connection of the common line signal system. By connecting the 7 common line signal network and the IP network, it is possible to cope with an environment such as a VoIP (Voice over Internet Protocol) environment.

  Hereinafter, embodiments of the present invention will be described using a plurality of examples.

  In addition, this invention is not limited to said embodiment, Embodiment can be changed suitably within the range of the technical idea of this invention.

  FIG. 1 is a block diagram of a communication control system according to the first embodiment of the present invention. The first embodiment is characterized in that the SS7 line card and all blade servers are restarted in stages. First, the configuration of the first embodiment will be described, and then its operation will be described.

  In FIG. 1, the block indicated by the instruction number 2 is a blade server having a common power source and a common fan and incorporating a plurality of blades, and the block indicated by the instruction number 4 is an opposing device that is connected to the blade server 2 in an opposing manner. Specifically, it is a transmission device in a common line signal network.

  In the blade server 2, the SS7 line card 6, which is a connection interface with the opposite device in the common line signal network, and the failure signal of the SS7 line card 6 are received to detect the operating state of the SS7 line card 6, It has a failure management function unit 8 that transmits an activation signal as necessary.

  The opposing device 4 has a function of communicating with the SS7 line card 6 using the SS7 method and a function of detecting a link break with the SS7 line card 6.

  The SS7 line card 6 is composed of a peripheral device including an interface element including a central processing element and a storage element, a communication unit between the internal bus and the IP network, and a communication unit with SS7 in detail. In the software or circuit configuration built in the storage element, a function for communicating with the opposite device 4 by the SS7 method, a function for transmitting a failure notification to the failure management function unit 8, and an initialization from the failure management function unit 8 It includes a function for receiving an instruction, a function for transmitting a startup completion notification to the failure management function unit 8, a function for transmitting a startup failure notification to the failure management function unit 8, and a function for restarting the SS7 line card 6.

  Specifically, the failure management function unit 8 includes a central processing element and a storage element, and a peripheral device including an interface element including a communication unit between the internal bus and the SS7 line card 6. In the built-in software or circuit configuration, a function for receiving a failure notification from the SS7 line card 6, a function for transmitting an initialization command to the SS7 line card device 6, and a startup completion notification from the SS7 line card 6 A function to receive the activation failure notification from the SS7 line card 6, a function to restart the blade server 2, and a function to transition the blade server 2 to the hardware failure state.

  Next, the operation of the first embodiment of the present invention will be described below using a flowchart of a communication control program according to the communication control method shown in FIGS.

  In the first embodiment, the SS7 line card 6 and the opposite apparatus 4 are linked and communicated by the SS7 common signal line system (SA2). At this time, the failure management function unit 8 monitors whether or not a failure has occurred in the SS7 line card 6.

  When a failure occurs in the SS7 line card 6 (SA4), the SS7 line card 6 gives a failure occurrence notification signal to the failure management function unit 8 (SA8).

  The opposing device 4 detects a link break between the SS7 line card 6 and the opposing device 4 and ends the communication with the SS7 line card 6 (SA6).

  The failure management function unit 8 gives an initialization command communication signal to the SS7 line card 6 (SA10).

  The SS7 line card 6 receives the initialization command communication signal (SA10) and restarts the SS7 line card 6 (SA12). When the restart (SA12) is normally completed, the SS7 line card 6 transmits a start completion notification signal to the failure management function unit 8 as a start result notification (SA14). When the restart is not completed normally, a start failure notification signal is transmitted to the failure management function unit 8 as a start result notification (SA14).

  When the failure management function unit 8 receives the activation completion notification signal as the activation result notification (SA14) or the activation failure notification signal as the activation result notification (SA14), or has not received the notification for a certain period of time, the SS7 line card Activation determination is performed (SA16). Specifically, when the activation completion notification signal is received as the activation result notification, it is determined that the activation is completed, and the recovery of the SS7 line card 6 is completed (SA18). In this case, since the communication interruption time is the restart time of only the SS7 line card 6, unnecessary restart does not occur and the recovery can be performed in a very short time. Further, since there is no influence when there is another circuit configuration, the service stop area due to the occurrence of a failure is also limited.

  On the other hand, when the activation failure notification signal (SA14) is received as the activation result notification, or when the notification is not received for a certain time, the activation is not completed. In this case, the failure management function unit 8 restarts the blade server 2 having the SS7 line card 6 (SA20).

  After the restart of the blade server 2 (SA20) is completed, turning to FIG. 3, the failure management function unit 8 transmits an initialization command signal to the SS7 line card 6 (SA22).

  The SS7 line card 6 receives the initialization command signal (SA22) from the failure management function unit 8, and restarts the SS7 line card 6 (SA24).

  When the restart (SA24) is normally completed, the SS7 line card 6 transmits an activation completion notification signal to the failure management function unit 8 as an activation result notification (SA26). If the restart is not completed normally, a start failure notification is transmitted to the failure management function unit 8 as a start result notification (SA26).

  When the failure management function unit 8 receives the activation completion notification or the activation failure notification as the activation result notification (SA26), or has not received the notification for a certain period of time, the failure management function unit 8 determines the activation of the SS7 line card 6 (SA28). .

  When the activation is completed in the SS7 line card 6 activation determination (SA28), the recovery of the SS7 line card 6 is completed (SA30). If the activation has failed in the SS7 line card 6 activation determination (SA28), the failure management function unit 8 cannot automatically restore the SS7 line card 6, and therefore causes the blade server 2 to transition to the hardware failure state (SA32).

  As described above, the present invention has the following effects.

  The first effect is that when the failure factor of the SS7 line card 6 is mild, communication is possible by restarting only the SS7 line card 6, and the service stop time is shortened.

  The second effect is that during the restart of the SS7 line card 6, the blade server can continue the service without using the SS7 line card.

  Subsequently, a second embodiment of the present invention will be described below. The second embodiment is an embodiment characterized in that an internal block is included in the SS7 line card. First, the configuration of the second embodiment will be described, and then its operation will be described.

  FIG. 4 is a block diagram of a communication control system according to the second embodiment of the present invention. The block indicated by the instruction number 10 is a blade server that includes a common power source and a common fan and incorporates a plurality of blades. The block indicated by the instruction number 12 is an opposing device that is oppositely connected to the blade server 10. Is a transmission device in the common line signal network.

  In the blade server 10, the SS7 line card 14, which is a connection interface with the opposite device in the common line signal network, and the failure signal of the SS7 line card 14 are received to detect the operating state of the SS7 line card 14, It has a failure management function unit 16 that transmits an activation signal as necessary.

  The opposite device 12 has a function of communicating with the SS7 line card 14 by the SS7 method and a function of detecting a link break with the SS7 line card 14.

  Specifically, the SS7 line card 14 includes a peripheral device including a central processing element, a storage element, an interface element including a communication unit for an internal bus and an IP network, and a communication unit for the SS7. In addition, in the software or circuit configuration built in the central processing element or the storage element, a function for communicating with the opposing device 12 by the SS7 method, a function for transmitting a fault occurrence notification to the fault management function unit 16, and a fault The function of receiving an initialization command from the management function unit 16, the function of transmitting a startup completion notification to the failure management function unit 16, the function of transmitting a startup failure notification to the failure management function unit 16, and the SS7 line card 14 are restored. Contains the function to be activated.

  Here, an interface element including a communication unit with SS7 in the SS7 line card 14 is further defined as an internal block 18. The internal block 18 is configured such that only this block can be restarted from the outside. The internal block 18 further has a function of transmitting an internal block failure occurrence notification to the failure management function unit 16, a function of receiving an internal block initialization command from the failure management function unit 16, and an internal block activation to the failure management function unit 16. It includes a function for transmitting a completion notification, a function for transmitting an internal block activation failure notification to the failure management function unit 16, and a function for restarting the internal block of the SS7 line card 14.

  The fault management function unit 16 includes a central processing element and a storage element, and a peripheral device including an interface element including a communication unit between the internal bus and the SS7 line card 14 in detail. In the built-in software or circuit configuration, a function for receiving a failure notification from the SS7 line card 14, a function for transmitting an initialization command to the SS7 line card device 14, and a startup completion notification from the SS7 line card 14 A function of receiving an activation failure notification from the SS7 line card 14, a function of receiving an internal block failure notification from the SS7 line card 14, and a function of transmitting an internal block initialization command to the SS7 line card device 14. A function for receiving an internal block activation completion notification from the SS7 line card 14, and an internal function from the SS7 line card 14. A function of receiving block starting failure notification, a function to restart the blade server 10, containing the function of shifting the blade server 10 to the hard failure condition.

  Next, the operation of the second embodiment of the present invention will be described below with reference to a flowchart of a communication control program according to the communication control method shown in FIGS.

  In the second embodiment, the SS7 line card 14 and the opposite apparatus 12 are linked and communicated using the SS7 common signal line system (SB2). At this time, the failure management function unit 16 monitors whether or not a failure has occurred in the SS7 line card 14.

  When a failure occurs in the SS7 line card 14 (SB4), the internal block 18 of the SS7 line card 14 provides an internal block failure occurrence notification signal to the failure management function unit 16 (SB8).

  The opposite device 12 detects a link break between the SS7 line card 14 and the opposite device 12, and ends the communication with the SS7 line card 14 (SB6).

  The failure management function unit 16 gives an internal block initialization command communication signal for initializing the internal block 18 to the SS7 line card 14 (SB10).

  The SS7 line card 14 receives the internal block initialization command communication signal (SB10) and restarts the internal block 18 in the SS7 line card 14 (SB12). When the restart (SB12) is normally completed, the SS7 line card 14 transmits an internal block activation completion notification signal to the failure management function unit 16 as an internal block activation result notification (SB14). When the internal block restart is not normally completed, an internal block start failure notification signal is transmitted to the failure management function unit 16 as an internal block start result notification (SB14).

  The failure management function unit 16 receives a notification when an internal block activation completion notification signal is received as an internal block activation result notification (SB14) or when an internal block activation failure notification signal is received as an internal block activation result notification (SB14) or for a certain period of time. If not, SS7 line card internal block activation determination is performed (SB16). Specifically, when the internal block activation completion notification signal is received as the internal block activation result notification, it is determined that the internal block activation is completed, and the recovery of the internal block of the SS7 line card 14 is completed (SB18). In this case, the time during which communication is interrupted is the restart time of only the internal block of the SS7 line card 14, so that unnecessary restart does not occur, and the recovery is performed in a very short time. Further, since there is no influence when there is another circuit configuration, the service stop area due to the occurrence of a failure is also limited.

  On the other hand, when the internal block activation failure notification signal is received as the internal block activation result notification (SB14), or when the notification is not received for a certain time, the activation is not completed. In this case, the failure management function unit 16 transmits an initialization command signal to the SS7 line card 14 (SB20). The SS7 line card 14 as a whole receives the initialization command signal (SB20) and restarts (SB22).

  After the restart of the entire SS7 line card 14 (SB22) is completed, turning to FIG. 6, when the SS7 line card 14 is successfully restarted (SB22), the start completion notification signal is sent as the start result notification (SB24). Is transmitted to the failure management function unit 16. When the restart is not completed normally, a start failure notification is transmitted to the failure management function unit 16 as a start result notification (SB24).

  When the failure management function unit 16 receives the activation completion notification or the activation failure notification as the activation result notification (SB24), or has not received the notification for a certain period of time, the failure management function unit 16 determines whether to activate the SS7 line card 14 (SB26). .

  When the activation is completed in the SS7 line card 14 activation determination (SB26), the recovery of the SS7 line card 14 is completed (SB28). When the activation has failed in the SS7 line card 14 activation determination (SB26), the failure management function unit 16 restarts the blade server 10 because the SS7 line card 14 cannot be automatically restored (SB30).

  After the restart of the blade server 10 (SB30) is completed, the failure management function unit 16 transmits an initialization command signal to the SS7 line card 14 (SB32).

  The SS7 line card 14 receives the initialization command signal (SB32) from the failure management function unit 16 and restarts the SS7 line card 14 (SB34).

  When the restart (SB34) is normally completed, the SS7 line card 14 transmits an activation completion notification signal to the failure management function unit 16 as an activation result notification (SB36). If the restart is not completed normally, a start failure notification is transmitted to the failure management function unit 16 as a start result notification (SB36).

  When the failure management function unit 16 receives the activation completion notification or the activation failure notification (SB36), or has not received the notification for a certain period of time, the failure management function unit 16 determines whether to activate the SS7 line card 14 (SB38).

  When the activation is completed in the SS7 line card 14 activation determination (SB38), the recovery of the SS7 line card 14 is completed (SB40). If the activation has failed in the SS7 line card 14 activation determination (SB38), the failure management function unit 16 cannot automatically restore the SS7 line card 14, and therefore causes the blade server 10 to transition to the hardware failure state (SB42).

  As described above, the present invention has the following effects.

  The first effect is that when the cause of failure of the SS7 line card 14 is mild, communication is possible by restarting only the internal block 18 of the SS7 line card 14, and the service stop time is shortened.

  The second effect is that during the restart of the SS7 line card 14, the blade server can continue the service without using the SS7 line card device.

  Subsequently, a third embodiment of the present invention will be described below. The third embodiment is an embodiment characterized in that the management process as the software can be restarted separately in the failure management function unit. First, the configuration of the third embodiment will be described, and then its operation will be described.

  FIG. 8 is a block diagram of the communication control system according to the third embodiment of the present invention. The block indicated by the instruction number 22 is a blade server that includes a common power source and a common fan and incorporates a plurality of blades. The block indicated by the instruction number 24 is an opposing device that is oppositely connected to the blade server 22. Is a transmission device in the common line signal network.

  In the blade server 22, the SS7 line card 26, which is a connection interface with the opposite device in the common line signal network, and the failure signal of the SS7 line card 26 are received to detect the operating state of the SS7 line card 26, It has a failure management function unit 28 that transmits an activation signal as necessary.

  The opposing device 24 has a function of communicating with the SS7 line card 26 by the SS7 method and a function of detecting a link break with the SS7 line card 26.

  In detail, the SS7 line card 26 includes a peripheral device including a central processing element, a storage element, an interface element including a communication unit for an internal bus and an IP network, and a communication unit for the SS7. In addition, in the software or circuit configuration incorporated in the central processing element or the storage element, a function for communicating with the opposing device 24 by the SS7 method, a function for transmitting a fault occurrence notification to the fault management function unit 28, and a fault The function of receiving an initialization command from the management function unit 28, the function of transmitting a startup completion notification to the failure management function unit 28, the function of transmitting a startup failure notification to the failure management function unit 28, and the SS7 line card 28 are restored. Contains the function to be activated.

  The fault management function unit 28 includes a central processing element and a storage element, and a peripheral device including an interface element including a communication unit between the internal bus and the SS7 line card 26 in detail. A management process 30 is included as the built-in software.

  Here, a function of receiving a failure notification from the SS7 line card 26 as software built in the failure management function unit 28, a function of transmitting an initialization command to the SS7 line card device 26, and an activation from the SS7 line card 26 Management process 30 includes a process having a function of receiving a completion notification, a function of receiving a startup failure notification from the SS7 line card 26, a function of restarting the blade server 22, and a function of transitioning the blade server 22 to a hardware failure state. And

  Next, the operation of the third embodiment of the present invention will be described below with reference to the flowchart of the communication control program according to the communication control method shown in FIG. 9, FIG. 10, and FIG.

  In the third embodiment, the SS7 line card 26 and the opposite apparatus 28 are linked and communicated by the SS7 common signal line system (SC2). At this time, the failure management function unit 28 monitors whether or not a failure has occurred in the SS7 line card 26.

  When a failure occurs in the SS7 line card 26 (SC4), the SS7 line card 26 gives a failure occurrence notification signal to the failure management function unit 28 (SC6).

  The opposing device 24 detects the link disconnection between the SS7 line card 26 and the opposing device 24 and ends the communication with the SS7 line card 26 (SC8).

  The failure management function unit 28 provides an initialization command communication signal for initializing the SS7 line card 26 (SC10).

  The SS7 line card 26 receives the initialization command communication signal (SC10) and restarts the SS7 line card 26 (SC12). When the restart (SC12) is normally completed, the SS7 line card 26 transmits an activation completion notification signal to the failure management function unit 28 as an activation result notification (SC14). When the restart of the SS7 line card 26 is not normally completed, an activation failure notification signal is transmitted to the failure management function unit 28 as an activation result notification (SC14).

  When the failure management function unit 28 receives the activation completion notification signal (SC14) as the activation result notification or the activation failure notification signal (SC14) as the activation result notification, or when no notification is received for a certain period of time, the SS7 line card Activation determination is performed (SC16). Specifically, when the activation completion notification signal is received as the activation result notification, it is determined that the activation is completed, and the recovery of the SS7 line card 26 is completed (SC18). In this case, since the communication interruption time is the restart time of only the SS7 line card 26, unnecessary restart does not occur and the recovery can be performed in a very short time. Further, since there is no influence when there is another circuit configuration, the service stop area due to the occurrence of a failure is also limited.

  On the other hand, when the activation failure notification signal is received as the activation result notification (SC14), or when the notification is not received for a certain time, the activation is not completed. In this case, the failure management function unit 28 executes a restart command for the management process 30 (SC20). The management process 30 is restarted by stopping all the management processes 30 that control and manage the SS7 line card 26. Subsequently, the failure management function unit 28 transmits an initialization command signal to the SS7 line card 26 (SC22).

  In FIG. 10, the entire SS7 line card 26 receives the initialization command signal (SC22) and restarts (SC24).

  After the restart of the entire SS7 line card 26 (SC24) is completed, when the SS7 line card 26 is successfully restarted (SC24), the failure completion function unit 28 sends a start completion notification signal as a start result notification (SC26). Send to. When the restart is not completed normally, a start failure notification is transmitted to the failure management function unit 28 as a start result notification (SC26).

  When the failure management function unit 28 receives the activation completion notification or the activation failure notification as the activation result notification (SC26), or does not receive the notification for a certain period of time, the failure management function unit 28 performs activation determination of the SS7 line card 26 (SC28). .

  When the activation is completed in the SS7 line card 28 activation determination (SC28), the recovery of the SS7 line card 26 is completed (SC30). Here, since the SS7 line card 26 is recovered by restarting the SS7 line card 26 and the management process 30 and restarting the SS7 line card 26, it is possible to collect the devices to be restarted and their parts to a minimum. Since unnecessary restarts can prevent other processes from being stopped, the effect of stopping the SS7 line card 28 can be minimized.

  On the other hand, if the activation has failed in the SS7 line card 26 activation determination (SC28), the failure management function unit 28 restarts the blade server 22 because the SS7 line card 26 cannot be automatically restored (SC32).

  After the restart of the blade server 22 (SC32) is completed, the failure management function unit 28 transmits an initialization command signal to the SS7 line card 26 (SC34).

  The SS7 line card 26 receives the initialization command signal (SC34) from the failure management function unit 28 and restarts the SS7 line card 26 (SC36).

  When the restart (SC36) is normally completed, the SS7 line card 26 transmits an activation completion notification signal to the failure management function unit 28 as an activation result notification (SC38). When the restart is not completed normally, a start failure notification is transmitted to the failure management function unit 28 as a start result notification (SC38).

  When the failure management function unit 28 receives the activation completion notification or the activation failure notification as the activation result notification (SC38), or does not receive the notification for a certain period of time, the failure management function unit 28 determines whether to activate the SS7 line card 26 (SC40).

  When the activation is completed in the SS7 line card 26 activation determination (SC40), the recovery of the SS7 line card 26 is completed (SC42).

  As shown in FIG. 11, when the activation failure has occurred in the SS7 line card 26 activation determination (SC40), the failure management function unit 28 cannot automatically restore the SS7 line card 26, so the blade server 22 is brought into a hardware failure state. Transition is made (SC44).

  As described above, the present invention has the following effects.

  The first effect is that when the failure factor of the SS7 line card 26 is minor, the failure management function unit 28 can communicate by restarting only the management process 30 and the SS7 line card 26, and the service stop time is shortened. .

  The second effect is that the blade server can continue the service that does not use the management process 30 while the management process 30 is restarted.

  Subsequently, a fourth embodiment of the present invention will be described below. In the fourth embodiment, when a blade server is provided with a plurality of SS7 line cards, when one of the SS7 line cards fails, the service of another SS7 line card can be continued. This is a featured embodiment. First, the configuration of the fourth embodiment will be described, and then its operation will be described.

  FIG. 12 is a block diagram of a communication control system according to the fourth embodiment of the present invention. In this embodiment, an embodiment using a blade server in which two SS7 line cards are incorporated will be described.

  The block indicated by the instruction number 32 is a blade server that includes a common power source and a common fan and incorporates a plurality of blades. The block indicated by the instruction number 34 is a first opposing device that is connected opposite to the blade server 32. Specifically, the transmission device is in the common line signal network, and the block indicated by the instruction number 36 is a second opposite device that is connected to the blade server 32, specifically in the common line signal network. It is a transmission device.

  Inside the blade server 32, there is a connection interface between the first SS7 line card 38, which is a connection interface with the first counter device 34 in the common line signal network, and the second counter device 36 in the common line signal network. The failure signal of the second SS7 line card 40, the first SS7 line card 38 and the second SS7 line card 40 is received, and the operation state of each SS7 line card 38, 40 is detected and necessary. In response to this, it has a failure management function unit 42 that transmits an activation signal.

  The first opposing device 34 has a function of communicating with the first SS7 line card 38 by the SS7 method and a function of detecting a link break with the first SS7 line card 38.

  The second opposing device 36 has a function of communicating with the second SS7 line card 40 by the SS7 method and a function of detecting a link break with the second SS7 line card 40.

  Specifically, the first SS7 line card 38 includes a peripheral device including a central processing element, a storage element, an interface element including a communication unit for an internal bus and an IP network, and a communication unit for SS7. In addition, in the software or circuit configuration built in the central processing element or storage element, a function of communicating with the first opposing device 34 by the SS7 method, and a function of transmitting a failure occurrence notification to the failure management function unit 42 A function of receiving an initialization command from the failure management function unit 42, a function of transmitting a startup completion notification to the failure management function unit 42, a function of transmitting a startup failure notification to the failure management function unit 42, and an SS7 line card The function of restarting 38 is included.

  Specifically, the second SS7 line card 40 includes a peripheral device including a central processing element, a storage element, an interface element including a communication unit for an internal bus and an IP network, and a communication unit for SS7. In addition, in the software or circuit configuration built in the central processing element or storage element, a function for communicating with the second opposing device 36 by the SS7 method, and a function for transmitting a fault occurrence notification to the fault management function unit 42 A function of receiving an initialization command from the failure management function unit 42, a function of transmitting a startup completion notification to the failure management function unit 42, a function of transmitting a startup failure notification to the failure management function unit 42, and an SS7 line card Includes the function to restart 40.

  The fault management function unit 42 is composed of a central processing element, a storage element, and a peripheral device including an interface element including a communication unit between the internal bus and each SS7 line card 38, 40. In the software or circuit configuration built in the storage element, a function for receiving a failure notification from the first SS7 line card 38, a function for transmitting an initialization command to the first SS7 line card device 38, A function of receiving a startup completion notification from the first SS7 line card 38, a function of receiving a startup failure notification from the first SS7 line card 38, a function of receiving a failure occurrence notification from the second SS7 line card 40, A function of transmitting an initialization command to the second SS7 line card device 40, a function of receiving an activation completion notification from the second SS7 line card 40, and a second SS7 Harboring a function of receiving a boot failure notification from line card 40, a function of restarting the blade server 32, the function of shifting the blade server 32 to the hard failure condition.

  Next, the operation of the fourth embodiment of the present invention will be described below using the flowchart of the communication control program according to the communication control method shown in FIGS.

  In the fourth embodiment, the first SS7 line card 38 and the first opposing device 34 are linked and communicated by the SS7 common signal line system (SD2). At this time, the failure management function unit 42 monitors whether or not a failure has occurred in the first SS7 line card 38.

  Further, the second SS7 line card 40 and the second opposite device 36 are linked and communicated by the SS7 common signal line system (SD4). At this time, the failure management function unit 42 monitors whether or not a failure has occurred in the second SS7 line card 40.

  Here, a case where a failure occurs in the first SS7 line card 34 will be described. When a failure occurs in the first SS7 line card 34 (SD6), the first SS7 line card 34 provides a failure occurrence notification signal to the failure management function unit 38 (SD8).

  The first counter device 40 detects a link break between the first SS7 line card 38 and the first counter device 34, and ends the communication with the SS7 line card 38 (SD10). Since this communication end (SD10) is processed independently of the blade server 32, the order of subsequent procedures does not affect the present invention.

  The failure management function unit 42 provides an initialization command communication signal for initializing the first SS7 line card 38 (SD12).

  The first SS7 line card 38 receives the initialization command communication signal (SD12) and restarts the first SS7 line card 38 (SD14). The first SS7 line card 38 transmits a start completion notification signal to the failure management function unit 42 as a start result notification (SD16) when the restart (SD14) is normally completed. When the restart of the first SS7 line card 38 is not normally completed, an activation failure notification signal is transmitted to the failure management function unit 42 as an activation result notification (SD16).

  When the failure management function unit 42 receives the activation completion notification signal as the activation result notification (SD16) or the activation failure notification signal as the activation result notification, or has not received the notification for a certain period of time, the failure management function unit 42 determines whether to activate the SS7 line card. Perform (SD18). Specifically, when the activation completion notification signal is received as the activation result notification, it is determined that the activation is completed, and the recovery of the first SS7 line card 38 is completed (SD20). In this case, since the time during which communication is interrupted is the restart time of only the first SS7 line card 34, unnecessary restart does not occur and the recovery is performed in a very short time. Further, since there is no influence when there is another circuit configuration, the service stop area due to the occurrence of a failure is also limited.

  On the other hand, when the activation failure notification signal is received as the activation result notification (SD16), or when the notification is not received for a certain time, the activation is not completed. In this case, the failure management function unit 42 transmits a communication stop command to the second SS7 line card 40 (SD22).

  When the second SS7 line card 40 receives the communication stop command (SD22) from the failure management function unit 42, the second SS7 line card 40 stops communication with the second opposing device 36 (SD24) and sends a communication stop completion notification to the failure management function unit 42. (SD26).

  Upon receiving the communication stop completion notification (SD26), the failure management function unit 42 restarts the blade server 32 having the first SS7 line card 38 (SD28).

  As shown in FIG. 14, after the restart of the blade server 32 (SD28) is completed, the failure management function unit 42 transmits an initialization command to the first SS7 line card 38 (SD30), and at the same time, the second SS7 line card. An initialization command is transmitted to 40 (SD32).

  The first SS7 line card 38 receives the initialization command (SD30) from the failure management function unit 42, and restarts the first SS7 line card 38 (SD34). The second SS7 line card 40 receives the initialization command (SD32) from the failure management function unit 42 and restarts the second SS7 line card 40 (SD36).

  The first SS7 line card 38 transmits a start completion notification to the failure management function unit 42 as a start result notification (SD38) when the restart (SD34) is normally completed. When the restart is not completed normally, a start failure notification is transmitted to the failure management function unit 42 as a start result notification (SD38).

  The second SS7 line card 40 transmits a startup completion notification to the failure management function unit 42 as a startup result notification (SD40) when the restart (SD36) is normally completed. If the restart is not completed normally, a start failure notification is transmitted to the failure management function unit 42 as a start result notification (SD40).

  The fault management function unit 42 does not receive a notification when it receives a startup completion notification or a startup failure notification (SD38 / SD40) from the first SS7 line card 38 and the second SS7 line card 40, or for a certain period of time. In this case, the SS7 line card device activation determination is performed (SD42).

  When the activation is completed in the SS7 line card device activation determination (SD42), the recovery of the first SS7 line card 38 is completed (SD44). In the case where the activation has failed in the SS7 line card device activation determination (SD42), the failure management function unit 42 cannot automatically restore the first SS7 line card 38, so that the blade server 32 transitions to the hardware failure state ( SD46).

  As described above, the present invention has the following effects.

  As described above, the present invention has the following effects in addition to the above embodiments.

  The first effect is that the normal SS7 line card device can continue the service while the failed SS7 line card device is restarted.

  The second effect is that communication until a transition to the hardware failure state is made by stopping communication with the opposite device communicating with the SS7 line card device in which no failure has occurred before restarting the blade server. The loss can be reduced.

  The present invention is applicable to a device that terminates an SS7 line in a network having an SS7 line.

  Specifically, the present invention is applicable to SG (Signaling Gateway) that performs SS7 and IP conversion processing, STP (Signal Transfer Point) in the SS7 network, SEP (Signal End Point), and the like.

It is a block diagram of the communication control system for demonstrating the 1st Example of this invention. It is a flowchart of the communication control program according to the communication control method for demonstrating the 1st Example of this invention. It is a flowchart of the communication control program according to the communication control method for demonstrating the 1st Example of this invention. It is a block diagram of the communication control system for demonstrating the 2nd Example of this invention. It is a flowchart of the communication control program according to the communication control method for demonstrating the 2nd Example of this invention. It is a flowchart of the communication control program according to the communication control method for demonstrating the 2nd Example of this invention. It is a flowchart of the communication control program according to the communication control method for demonstrating the 2nd Example of this invention. It is a block diagram of the communication control system for demonstrating the 3rd Example of this invention. It is a flowchart of the communication control program according to the communication control method for demonstrating the 3rd Example of this invention. It is a flowchart of the communication control program according to the communication control method for demonstrating the 3rd Example of this invention. It is a flowchart of the communication control program according to the communication control method for demonstrating the 3rd Example of this invention. It is a block diagram of the communication control system for demonstrating the 4th Example of this invention. It is a flowchart of the communication control program according to the communication control method for demonstrating the 4th Example of this invention. It is a flowchart of the communication control program according to the communication control method for demonstrating the 4th Example of this invention.

Explanation of symbols

2 Blade Server 4 Opposing Device 6 SS7 Line Card 8 Fault Management Function Unit 10 Blade Server 12 Opposing Device 14 SS7 Line Card 16 Fault Management Function Unit 18 Internal Block 22 Blade Server 24 Opposing Device 26 SS7 Line Card 28 Fault Management Function Unit 30 Management Process 32 Blade server 34 First counter device 36 Second counter device 38 First SS7 line card 40 Second SS7 line card 42 Fault management function unit

Claims (36)

  A communication control device connected to a counter device includes a communication interface coupled to the counter device and a communication interface management unit that controls the communication interface, and the communication interface management unit has a problem in communication with the counter device. When the communication interface management unit receives the signal, the communication interface management unit first transmits a restart signal to the communication interface to restart the communication interface to remove the failure. A communication control method for shortening the communication interruption time of the entire communication control device by restarting the entire communication control device in a stepwise manner only when the activation completion notification signal is not received after a predetermined time from the restart signal transmission.   The communication control method according to claim 1, wherein another functional block of the communication control device continues to operate while the communication interface is restarted.   The communication control device makes a transition to the communication control device failure when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission even when the entire communication control device is restarted. The communication control method according to claim 1.   The communication control method according to claim 3, wherein the communication control device stops communication with the opposite device before transitioning to the communication control device failure.   The communication interface further includes an internal block in the communication interface. When the communication interface management unit receives a signal indicating a failure in communication with the opposite device, the communication interface management unit first starts the communication interface internal block. The communication control method according to claim 1, wherein a failure signal is removed by transmitting a restart signal to the communication interface to restart the communication interface internal block.   The communication interface management unit includes a communication interface management process as its internal process program, and the communication interface management unit receives the activation completion notification signal after a predetermined time of restart signal transmission from the communication interface. The communication control method according to claim 1, wherein the fault is eliminated by restarting the process.   2. The communication control method according to claim 1, wherein a plurality of the communication interfaces are provided, and the operation of the other communication interface is continued while one of the communication interfaces is restarted.   8. The communication control device can be mounted with a plurality of server devices and is configured with a blade server having a common power source and fan, so that the communication control device is compactly manufactured and can restart a plurality of devices at the same time. The communication control method according to any one of the above.   The communication interface is No. 7 is a communication interface circuit for connection of the common line signal system. The communication control method according to claim 1, wherein the 7 common line signal network and the IP network are connected.   A communication control device connected to a counter device includes a communication interface coupled to the counter device and a communication interface management unit that controls the communication interface, and the communication interface management unit has a problem in communication with the counter device. The communication interface management unit first transmits a restart signal to the communication interface to restart the communication interface to remove the fault, and the communication interface management unit The step of shortening the communication interruption time of the entire communication control device by restarting the entire communication control device stepwise only when the activation completion notification signal is not received after a predetermined time of transmission of the restart signal from the communication interface. Communication control program.   The communication control program according to claim 10, wherein another function block of the communication control device continues to operate while the communication interface is restarted.   The communication control device makes a transition to the communication control device failure when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission even when the entire communication control device is restarted. The communication control program according to claim 10.   13. The communication control program according to claim 12, wherein the communication control apparatus stops communication with the opposite apparatus before transitioning to the communication control apparatus failure.   The communication interface further includes an internal block in the communication interface. When the communication interface management unit receives a signal indicating a failure in communication with the opposite device, the communication interface management unit first starts the communication interface internal block. 11. The communication control program according to claim 10, wherein a failure signal is removed by transmitting a restart signal to the communication interface to restart the communication interface internal block.   The communication interface management unit includes a communication interface management process as its internal process program, and the communication interface management unit receives the activation completion notification signal after a predetermined time of restart signal transmission from the communication interface. The communication control program according to claim 10, wherein the fault is eliminated by restarting the process.   11. The communication control program according to claim 10, wherein a plurality of the communication interfaces are provided, and the operation of the other communication interface is continued while one of the communication interfaces is restarted.   17. The communication control device can be mounted in a plurality of server devices and is configured by a blade server having a common power source and fan so that the communication control device is compactly manufactured and can restart a plurality of devices at the same time. The communication control program according to any one of the above.   The communication interface is No. 7 is a communication interface circuit for connection of the common line signal system. The communication control program according to any one of claims 10 to 17, wherein the 7 common line signal network and the IP network are connected. In a communication control system including a counter device and a communication control device connected to the counter device, the communication control system includes a communication interface coupled to the counter device, and a communication interface management unit that controls the communication interface.
When the communication interface management unit receives a signal indicating that communication with the opposite device has failed, the communication interface management unit first sends a restart signal to the communication interface to restart the communication interface. The ability to remove obstacles,
The communication interruption time of the entire communication control device by restarting the entire communication control device in stages only when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission from the communication interface. Communication control system with a function of shortening.   20. The communication control system according to claim 19, wherein the other functional blocks of the communication control device continue to operate while the communication interface is restarted.   20. The communication control device makes a transition to the communication control device failure when a restart completion notification signal is not received after a predetermined time of restart signal transmission even by restarting the entire communication control device. Communication control system.   The communication control system according to claim 21, wherein the communication control device stops communication with the opposite device before transitioning to the communication control device failure.   The communication interface further includes an internal block in the communication interface. When the communication interface management unit receives a signal indicating a failure in communication with the opposite device, the communication interface management unit first starts the communication interface internal block. The communication control system according to claim 19, wherein a failure signal is removed by transmitting a restart signal to the communication interface to restart the internal block of the communication interface.   The communication interface management unit includes a communication interface management process as its internal process program, and the communication interface management unit receives the activation completion notification signal after a predetermined time of restart signal transmission from the communication interface. 20. The communication control system according to claim 19, wherein the fault is eliminated by restarting the process.   20. The communication control system according to claim 19, wherein a plurality of the communication interfaces are provided, and the operation of the other communication interface is continued while one of the communication interfaces is restarted.   26. The communication control device can be mounted in a plurality of server devices and is configured by a blade server having a common power source and fan, so that the communication control device is compactly manufactured and can restart a plurality of devices at the same time. The communication control system according to any one of the above.   The communication interface is No. 7 is a communication interface circuit for connection of the common line signal system. The communication control system according to any one of claims 19 to 26, wherein the 7 common line signal network and the IP network are connected. In the communication control server connected to the opposite device, a communication interface coupled to the opposite device, and a communication interface management unit for controlling the communication interface,
When the communication interface management unit receives a signal indicating that communication with the opposite device has failed, the communication interface management unit first sends a restart signal to the communication interface to restart the communication interface. The ability to remove obstacles,
The communication interruption time of the entire communication control server by restarting the entire communication control server in stages only when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission from the communication interface. Communication control server provided with a function for shortening.   29. The communication control server according to claim 28, wherein the other functional blocks continue to operate while the communication interface is restarted.   29. The communication control according to claim 28, further comprising a transition to the communication control device failure when the communication interface management unit does not receive a start completion notification signal after a predetermined time of restart signal transmission even by a total restart. server.   31. The communication control server according to claim 30, wherein communication with the opposite device is stopped before a transition to a failure of the main body.   The communication interface further includes an internal block in the communication interface. When the communication interface management unit receives a signal indicating a failure in communication with the opposite device, the communication interface management unit first starts the communication interface internal block. 30. The communication control server according to claim 28, wherein a failure signal is removed by transmitting a restart signal to the communication interface to restart the communication interface internal block.   The communication interface management unit includes a communication interface management process as its internal process program, and the communication interface management unit receives the activation completion notification signal after a predetermined time of restart signal transmission from the communication interface. 29. The communication control server according to claim 28, wherein a fault is eliminated by restarting the process.   29. The communication control server according to claim 28, wherein a plurality of the communication interfaces are provided, and the operation of the other communication interface is continued while one of the communication interfaces is restarted.   35. The communication control device can be mounted with a plurality of server devices and is configured with a blade server having a common power source and fan so that the communication control device is compactly manufactured and can restart a plurality of devices at the same time. The communication control server according to any one of the above.   The communication interface is No. 7 is a communication interface circuit for connection of the common line signal system. 36. The communication control server according to claim 28, wherein the 7 common line signal network and the IP network are connected.

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