JP3228299B2 - Switching control method - Google Patents
Switching control methodInfo
- Publication number
- JP3228299B2 JP3228299B2 JP18585391A JP18585391A JP3228299B2 JP 3228299 B2 JP3228299 B2 JP 3228299B2 JP 18585391 A JP18585391 A JP 18585391A JP 18585391 A JP18585391 A JP 18585391A JP 3228299 B2 JP3228299 B2 JP 3228299B2
- Authority
- JP
- Japan
- Prior art keywords
- control unit
- communication control
- switching
- unit
- standby
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Detection And Prevention Of Errors In Transmission (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Hardware Redundancy (AREA)
- Computer And Data Communications (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は切替制御方式に関し、特
に予備切替機能を有した通信制御システムにおける現用
系の通信制御部および予備系の通信制御部と現用系の回
線対応部および予備系の回線対応部との論理的な接続を
切り替える切替制御方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching control system and, more particularly, to a communication control unit of an active system and a communication control unit of a standby system in a communication control system having a standby switching function. The present invention relates to a switching control method for switching a logical connection with a line corresponding unit.
【０００２】[0002]
【従来の技術】従来、この種の切替制御方式では、現用
系の通信制御部に障害が発生すると、現用系の通信制御
部内のサービスプロセッサから外部装置であるシステム
制御装置に障害報告がなされ、システム制御装置はリレ
ー等を用いて予備系の通信制御部に論理的に接続されて
いる回線対応部を予備系の回線対応部から現用系の回線
対応部に切り替え、現用系の通信制御部に論理的に接続
されている回線対応部を現用系の回線対応部から予備系
の回線対応部に切り替えている。2. Description of the Related Art Conventionally, in this type of switching control system, when a failure occurs in an active communication control unit, a failure is reported from a service processor in the active communication control unit to a system control device which is an external device. The system control device switches the line corresponding unit logically connected to the standby communication control unit from the standby line corresponding unit to the working line corresponding unit by using a relay or the like, and switches to the active communication control unit. The logically connected line corresponding unit is switched from the working line corresponding unit to the standby line corresponding unit.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来の切替制
御方式では、現用系の回線対応部および予備系の回線対
応部が現用系の通信制御部および予備系の通信制御部に
別々に物理的に接続されているので、システム制御装置
のリレー等の故障，切替動作に関する制御回路に使用さ
れている集積回路のバラツキ，現用系の通信制御部およ
び予備系の通信制御部と現用系の回線対応部および予備
系の回線対応部との物理的な接続における誤接続等があ
る場合には、予備系から現用系になるはずの通信制御部
に現用系の回線対応部および予備系の回線対応部が同時
に論理的に接続されてしまうことがあり、現用系の通信
制御部の障害発生と同時に予備系の通信制御部も障害に
なることがあるという問題点があった。In the conventional switching control method described above, the working line corresponding unit and the protection line corresponding unit are physically separated separately into the working communication control unit and the standby communication control unit. Connected to the system control unit, the variation of the integrated circuit used in the control circuit related to the failure of the relay and the switching operation of the system control device, the communication control unit of the working system and the communication control unit of the standby system and the line correspondence of the working system. If there is an erroneous connection in the physical connection between the standby system and the backup line support unit, the communication control unit that is supposed to change from the backup system to the work system must provide the working system backup unit and the backup system line support unit. May be logically connected at the same time, and there is a problem in that a failure occurs in the active communication control unit and at the same time a standby communication control unit also fails.
【０００４】本発明の目的は、上述の点に鑑み、外部装
置からの切替指示があると現用系の回線対応部および予
備系の回線対応部と現用系の通信制御部および予備系の
通信制御部とをそれぞれ未接続状態とし、その後に現用
系の回線対応部を予備系の通信制御部に接続するととも
に予備系の回線対応部を現用系の通信制御部に接続し
て、現用系の通信制御部および予備系の通信制御部の両
方が同時に障害になることがないようにした切替制御方
式を提供することにある。SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide an active communication system, a standby communication system, a working communication control unit, and a standby communication control unit when a switching instruction is received from an external device. To the standby system, then connect the active line interface to the standby communication controller and connect the standby line interface to the active communication controller, and An object of the present invention is to provide a switching control method in which both a control unit and a communication control unit of a standby system do not simultaneously become obstacles.
【０００５】[0005]
【課題を解決するための手段】本発明の切替制御方式
は、現用系の通信制御装置と、予備系の通信制御装置
と、システム制御装置とを備え、現用系の通信制御部の
障害発生時に前記現用系の通信制御装置から障害報告信
号を受けた前記システム制御装置が前記現用系の通信制
御装置および前記予備系の通信制御装置に切替指示を出
して現用系の回線対応部を予備系の通信制御部に切替接
続し予備系の回線対応部を前記現用系の通信制御部に切
替接続する通信制御システムにおいて、前記現用系の通
信制御部および前記予備系の通信制御部の両方にそれぞ
れ物理的に接続された前記現用系の回線対応部および前
記予備系の回線対応部と、前記システム制御装置からの
切替指示があると前記現用系の回線対応部と前記現用系
の通信制御部との接続状態信号および前記予備系の回線
対応部と前記予備系の通信制御部との接続状態信号を未
接続状態とし前記システム制御装置から前記現用系の通
信制御装置に出される切替指示と前記システム制御装置
から前記予備系の通信制御装置に出される切替指示との
出力時間差よりも長い所定時間後に前記予備系の回線対
応部と前記現用系の通信制御部との接続状態信号および
前記現用系の回線対応部と前記予備系の通信制御部との
接続状態信号を接続状態とする現用系の切替制御部およ
び予備系の切替制御部と、これら現用系の切替制御部お
よび予備系の切替制御部からの接続状態信号に応じて前
記現用系の回線対応部および前記予備系の回線対応部と
前記現用系の通信制御部および前記予備系の通信制御部
との論理的な接続を切り替える現用系の切替接続部およ
び予備系の切替接続部とを有する。A switching control method according to the present invention comprises an active communication control device and a standby communication control device.
And a system controller , wherein when a failure occurs in the working communication control unit, a failure report signal is sent from the working communication control unit.
The system control device having received the
Switching instruction to the control device and the standby communication control device.
In a communication control system for switching connection of a working line corresponding unit to a protection communication control unit and switching connection of a protection line corresponding unit to the working communication control unit, the working communication control unit and The working line linking unit and the protection line linking unit physically connected to both the standby communication control unit, and the working line linking when there is a switching instruction from the system control device. The connection state signal between the corresponding unit and the communication control unit of the working system and the connection state signal between the line corresponding unit of the protection system and the communication control unit of the protection system are set to the unconnected state, and the system control device sets the connection state signal of the working system to Through
Switching instruction issued to a communication control device and the system control device
With the switching instruction issued to the standby communication control device from
After a predetermined time longer than the output time difference , a connection state signal between the protection line corresponding unit and the working communication control unit and a connection state signal between the working line corresponding unit and the standby communication control unit are output. A switching control unit for the working system and a switching control unit for the protection system to be connected, and the line corresponding unit for the working system and the switching unit according to the connection state signal from the switching control unit for the working system and the switching control unit for the protection system. An active system switching connection unit and a standby system switching connection unit for switching a logical connection between the line linking unit of the standby system, the communication control unit of the active system, and the communication control unit of the standby system.
【０００６】[0006]
【作用】本発明の切替制御方式では、現用系の回線対応
部および予備系の回線対応部が現用系の通信制御部およ
び予備系の通信制御部の両方にそれぞれ物理的に接続さ
れ、現用系の切替制御部および予備系の切替制御部がシ
ステム制御装置からの切替指示があると現用系の回線対
応部と現用系の通信制御部との接続状態信号および予備
系の回線対応部と予備系の通信制御部との接続状態信号
を未接続状態としシステム制御装置から現用系の通信制
御装置に出される切替指示とシステム制御装置から予備
系の通信制御装置に出される切替指示との出力時間差よ
りも長い所定時間後に予備系の回線対応部と現用系の通
信制御部との接続状態信号および現用系の回線対応部と
予備系の通信制御部との接続状態信号を接続状態とし、
現用系の切替接続部および予備系の切替接続部が現用系
の切替制御部および予備系の切替制御部からの接続状態
信号に応じて現用系の回線対応部および予備系の回線対
応部と現用系の通信制御部および予備系の通信制御部と
の論理的な接続を切り替える。According to the switching control system of the present invention, the working line protection unit and the protection line correspondence unit are physically connected to both the working communication control unit and the protection communication control unit, respectively. Shi switching control unit of the switching control unit and the spare system is
When a switching instruction is received from the system control unit, the connection state signal between the working line corresponding unit and the working communication control unit and the connection state signal between the standby line corresponding unit and the standby communication control unit are not connected. Set the state to active communication control from the system controller.
Switch command issued to control device and reserve from system control device
Output time difference from the switching instruction issued to the communication controller
After a longer period of time, the connection state signal between the protection line control unit and the working communication control unit and the connection state signal between the working line correspondence unit and the protection communication control unit are connected,
The switching connection of the working system and the switching connection of the protection system are connected to the working line protection unit and the protection line switching unit in response to connection state signals from the working system switching control unit and the protection system switching control unit. The logical connection between the communication control unit of the system and the communication control unit of the standby system is switched.
【０００７】[0007]
【実施例】次に、本発明について図面を参照して詳細に
説明する。Next, the present invention will be described in detail with reference to the drawings.
【０００８】図１は、本発明の一実施例に係る切替制御
方式が適用された通信制御システムを示すブロック図で
ある。この通信制御システムは、システム制御装置１
と、現用系の通信制御装置２と、予備系の通信制御装置
３とから、その主要部が構成されている。FIG. 1 is a block diagram showing a communication control system to which a switching control system according to one embodiment of the present invention is applied. This communication control system includes a system control device 1
The active communication control device 2 and the standby communication control device 3 constitute the main part.
【０００９】現用系の通信制御装置２は、現用系の通信
制御部２１と、現用系の回線対応部２４と、現用系の切
替制御部２３とから構成されている。現用系の回線対応
部２４には、現用系の切替接続部２２が含まれており、
現用系の切替接続部２２は、現用系の切替制御部２３か
らの接続状態信号０Ａおよび０Ｂを受けて現用系の回線
対応部２４を現用系の通信制御部２１または予備系の通
信制御部３１に論理的に接続する選択回路を有してい
る。なお、ここでは、現用系の切替制御部２３からの接
続状態信号０Ａがオンのときに現用系の切替接続部２２
は現用系の回線対応部２４を接続ケーブル２０１を介し
て現用系の通信制御部２１に論理的に接続し、接続状態
信号０Ｂがオンのときに現用系の切替接続部２２は現用
系の回線対応部２４を接続ケーブル２０３を介して予備
系の通信制御部３１に論理的に接続するものとする。The working communication control device 2 comprises a working communication control unit 21, a working line correspondence unit 24, and a working switching control unit 23. The active line switching unit 24 includes the active switching connection unit 22.
Upon receiving the connection status signals 0A and 0B from the active switching control unit 23, the active switching connection unit 22 switches the active line corresponding unit 24 to the active communication control unit 21 or the standby communication control unit 31. Has a selection circuit that is logically connected to. Here, when the connection state signal 0A from the switching control unit 23 of the active system is on, the switching connection unit 22 of the active system is turned on.
Logically connects the working line corresponding unit 24 to the working communication control unit 21 via the connection cable 201, and when the connection state signal 0B is on, the working switching connection unit 22 connects to the working line. It is assumed that the corresponding unit 24 is logically connected to the standby communication control unit 31 via the connection cable 203.
【００１０】予備系の通信制御装置３は、予備系の通信
制御部３１と、予備系の回線対応部３４と、予備系の切
替制御部３３とから構成されている。予備系の回線対応
部３４は、予備として固定であり、回線対応部としては
現用系の回線対応部２４より機能が劣っているものとす
る。また、予備系の回線対応部３４には、現用系の回線
対応部２４と同様に、予備系の切替接続部３２が含まれ
ており、予備系の切替接続部３２は、予備系の切替制御
部３３からの接続状態信号１Ａおよび１Ｂを受けて予備
系の回線対応部３４を現用系の通信制御部２１または予
備系の通信制御部３１に論理的に接続する選択回路を有
している。なお、ここでは、予備系の切替制御部３３か
らの接続状態信号１Ａがオンのときに予備系の切替接続
部３２は予備系の回線対応部３４を接続ケーブル２０４
を介して現用系の通信制御部２１に論理的に接続し、接
続状態信号１Ｂがオンのときに予備系の切替接続部３２
は予備系の回線対応部３４を接続ケーブル２０２を介し
て予備系の通信制御部３１に論理的に接続するものとす
る。The standby communication controller 3 comprises a standby communication controller 31, a standby line controller 34, and a standby switching controller 33. It is assumed that the protection line corresponding unit 34 is fixed as a spare and has a lower function than the working line corresponding unit 24 as the line corresponding unit. In addition, the protection line switching unit 32 includes the protection switching connection unit 32 in the same way as the working line switching unit 24. The protection switching connection unit 32 controls the protection switching of the protection system. A selection circuit is provided which receives the connection state signals 1A and 1B from the unit 33 and logically connects the standby line corresponding unit 34 to the working communication control unit 21 or the standby communication control unit 31. Here, when the connection state signal 1A from the switching control unit 33 of the standby system is on, the switching connection unit 32 of the standby system connects the line corresponding unit 34 of the standby system to the connection cable 204.
Logically connected to the active communication control unit 21 via the connection control unit 21. When the connection state signal 1B is ON, the standby system switching connection unit 32
Is to logically connect the standby line corresponding unit 34 to the standby communication control unit 31 via the connection cable 202.
【００１１】図２は、本実施例の切替制御方式による接
続切替時の動作を示すタイミングチャートである。図２
を参照すると、現用系の切替制御部２３は、接続状態信
号０Ａをオンからオフにした後、所定時間が経過しては
じめて接続状態信号０Ｂをオフからオンにする。これに
より、接続状態信号０Ａおよび０Ｂの両者がオフの状
態、すなわち現用系の回線対応部２４が現用系の通信制
御部２１および予備系の通信制御部３１のどちらにも接
続されない未接続状態を作ってから予備系の通信制御部
３１に接続を切り替える。また、予備系の切替制御部３
３も、接続状態信号１Ｂをオンからオフにした後、所定
時間が経過してはじめて接続状態信号１Ａをオフからオ
ンにする。これにより、接続状態信号１Ａおよび１Ｂの
両者がオフの状態、すなわち予備系の回線対応部３４が
現用系の通信制御部２１および予備系の通信制御部３１
のどちらにも接続されない未接続状態を作ってから現用
系の通信制御部２１に接続を切り替える。上記所定時間
は例えば数１００ｍｓと比較的長く設定され、システム
制御装置１から出力される切替指示１０３および１０４
の出力タイミングが同時でなく別々に出力される場合の
時間の差をも十分にカバーできる時間となっている。FIG. 2 is a timing chart showing the operation at the time of connection switching by the switching control method of the present embodiment. FIG.
When the active switching control unit 23 switches the connection state signal 0A from on to off, the switching control unit 23 switches the connection state signal 0B from off to on only after a predetermined time has elapsed. As a result, the connection state signals 0A and 0B are both turned off, that is, the unconnected state in which the working line handling unit 24 is not connected to either the working communication control unit 21 or the standby communication control unit 31. After making the connection, the connection is switched to the communication control unit 31 of the standby system. Also, the switching control unit 3 of the standby system
3 also changes the connection state signal 1A from off to on only after a predetermined time has elapsed since the connection state signal 1B was changed from on to off. As a result, both of the connection state signals 1A and 1B are in the OFF state, that is, the standby line corresponding unit 34 is switched to the active communication control unit 21 and the standby communication control unit 31
The connection is switched to the active communication control unit 21 after an unconnected state that is not connected to either is created. The predetermined time is set to be relatively long, for example, several hundred ms, and the switching instructions 103 and 104 output from the system control device 1 are set.
Are sufficient to cover the difference in time when the output timings are output separately instead of simultaneously.
【００１２】次に、このように構成された本実施例の切
替制御方式の動作について説明する。Next, the operation of the switching control system of the present embodiment configured as described above will be described.
【００１３】いま、初期状態では、現用系の回線対応部
２４は接続ケーブル２０１に論理的に接続され、予備系
の回線対応部３４は接続ケーブル２０２に論理的に接続
されているものとする。すなわち、図２に示すように、
現用系の切替制御部２３は接続状態信号０Ａをオン、接
続状態信号０Ｂをオフとし、予備系の切替制御部３３は
接続状態信号１Ａをオフ、接続状態信号０Ｂをオンとし
ているものとする。In the initial state, it is assumed that the working line corresponding unit 24 is logically connected to the connection cable 201, and the standby line corresponding unit 34 is logically connected to the connection cable 202. That is, as shown in FIG.
It is assumed that the switching control unit 23 of the active system turns on the connection state signal 0A and turns off the connection state signal 0B, and the switching control unit 33 of the standby system turns off the connection state signal 1A and turns on the connection state signal 0B.
【００１４】この状態から、現用系の通信制御部２１に
障害が発生すると、障害報告信号１０１を活性化してシ
ステム制御装置１に障害報告を行う。In this state, when a failure occurs in the active communication control unit 21, the failure report signal 101 is activated and a failure report is made to the system controller 1.
【００１５】障害報告を受けたシステム制御装置１は、
現用系の切替制御部２３および予備系の切替制御部３３
に対し切替指示１０３および１０４をほぼ同時に出力す
る。The system control device 1 receiving the failure report,
Switching controller 23 of the active system and switching controller 33 of the standby system
The switching instructions 103 and 104 are output almost simultaneously.
【００１６】切替指示１０３を受けた現用系の切替制御
部２３は、接続状態信号０Ａをオフとし、現用系の切替
接続部２２に現用系の回線対応部２４と現用系の通信制
御部２１との論理的な接続の切離しを指示する。この結
果、現用系の回線対応部２４は、接続ケーブル２０１を
介して論理的に接続されていた現用系の通信制御部２１
から切り離される。Upon receiving the switching instruction 103, the active switching control unit 23 turns off the connection status signal 0A, and the active switching connection unit 22 sends the active line response unit 24 and the active communication control unit 21 To disconnect the logical connection. As a result, the working line corresponding unit 24 becomes the working communication control unit 21 that has been logically connected via the connection cable 201.
Disconnected from
【００１７】同様に、切替指示１０４を受けた予備系の
切替制御部３３は、接続状態信号１Ｂをオフとし、予備
系の切替接続部３２に予備系の回線対応部３４と予備系
の通信制御部３１との論理的な接続の切離しを指示す
る。この結果、予備系の回線対応部３４は、接続ケーブ
ル２０２を介して接続されていた予備系の通信制御部３
１から切り離される。Similarly, upon receiving the switching instruction 104, the standby switching control unit 33 turns off the connection state signal 1B, and causes the standby switching connection unit 32 to communicate with the standby line corresponding unit 34 and standby communication control. The disconnection of the logical connection with the unit 31 is instructed. As a result, the standby line controller 34 connects to the standby communication controller 3 connected via the connection cable 202.
Disconnected from 1.
【００１８】所定時間経過後、現用系の切替制御部２３
は、接続状態信号０Ｂをオンとし、現用系の切替接続部
２２に現用系の回線対応部２４と予備系の通信制御部３
１との論理的な接続を指示する。この結果、現用系の回
線対応部２４は、接続ケーブル２０３を介して予備系の
通信制御部３１に論理的に接続される。After a lapse of a predetermined time, the switching controller 23 of the active system
Turns on the connection state signal 0B, and connects the working line switching unit 22 and the working line
1 is instructed to be logically connected. As a result, the active line corresponding unit 24 is logically connected to the standby communication control unit 31 via the connection cable 203.
【００１９】同様に、予備系の切替制御部３３は、接続
状態信号１Ａをオンとし、予備系の切替接続部３２に予
備系の回線対応部３４と現用系の通信制御部２１との論
理的な接続を指示する。この結果、予備系の回線対応部
３４は、接続ケーブル２０４を介して現用系の通信制御
部２１に論理的に接続される。Similarly, the switching control unit 33 of the standby system turns on the connection state signal 1A, and the switching connection unit 32 of the standby system logically connects the line corresponding unit 34 of the standby system and the communication control unit 21 of the working system. To make a proper connection. As a result, the protection line corresponding unit 34 is logically connected to the working communication control unit 21 via the connection cable 204.
【００２０】このように、本実施例の切替制御方式で
は、現用系の回線対応部２４が予備系の通信制御部３１
に論理的に接続されるときには、予備系の通信制御部３
１と予備系の回線対応部３４とはすでに未接続状態とな
っており、また予備系の回線対応部３４が現用系の通信
制御部２１に論理的に接続されるときには、現用系の通
信制御部２１と現用系の回線対応部２４とはすでに未接
続状態となっていることになる。このため、現用系の通
信制御部２１または予備系の通信制御部３１が同時に現
用系の回線対応部２４および予備系の回線対応部３４に
接続されて障害になることはなくなる。As described above, in the switching control method of the present embodiment, the working line corresponding unit 24 is replaced by the standby communication control unit 31.
Is logically connected to the standby communication control unit 3
1 and the standby system line correspondence unit 34 are already unconnected, and when the standby system line correspondence unit 34 is logically connected to the active system communication control unit 21, the active system communication control unit This means that the unit 21 and the working line corresponding unit 24 have already been disconnected. Therefore, there is no possibility that the active communication control unit 21 or the standby communication control unit 31 is connected to the active line corresponding unit 24 and the standby line corresponding unit 34 at the same time, so that there is no obstacle.
【００２１】なお、上記実施例では、通信制御装置２を
現用系、通信制御装置３を予備系としたが、予備系の通
信制御部３１から障害報告信号１０２が出力された場合
も、前述したのとほぼ同様の動作が行われることになる
ので、通信制御装置２および通信制御装置３は交互に役
割を交換可能であることはいうまでもない。In the above-described embodiment, the communication control device 2 is used as the active system and the communication control device 3 is used as the standby system. Since substantially the same operation as described above is performed, it goes without saying that the communication control device 2 and the communication control device 3 can alternately exchange roles.
【００２２】[0022]
【発明の効果】以上説明したように本発明は、システム
制御装置から切替指示があったときに現用系の回線対応
部および予備系の回線対応部と現用系の通信制御部およ
び予備系の通信制御部とをそれぞれ未接続状態としシス
テム制御装置から現用系の通信制御装置に出される切替
指示とシステム制御装置から予備系の通信制御装置に出
される切替指示との出力時間差よりも長い所定時間後に
現用系の回線対応部を予備系の通信制御部に接続すると
ともに予備系の回線対応部を現用系の通信制御部に接続
するようにしたことにより、システム制御装置のリレー
の故障，ケーブルの誤接続時，切替動作に関係する制御
回路に使用される集積回路のバラツキ，システム制御装
置からの切替指示の多少のずれ等が発生した場合でも現
用系の回線対応部および予備系の回線対応部が予備系か
ら現用系となる通信制御部に論理的に二重に接続される
ことがなく、ひいては現用系の通信制御部および予備系
の通信制御部の両方が同時に障害となる不具合を未然に
防止できるという効果がある。As described above, the present invention provides a system
Cis and working system of the line interface and the standby system line interface and working system of the communication control unit and a communication control unit of the standby system unconnected state, respectively when the control unit there is a switching instruction
Switching issued from the system controller to the active communication controller
Instructions and output from the system controller to the standby communication controller
After a predetermined time longer than the output time difference from the switching instruction to be performed , the working line corresponding unit is connected to the standby communication control unit and the standby line corresponding unit is connected to the active communication control unit. Therefore, even if a failure of the relay of the system control device, incorrect connection of the cable, variation of the integrated circuit used for the control circuit related to the switching operation, slight deviation of the switching instruction from the system control device, etc. occur. The working line protection unit and the protection system line correspondence unit are not logically and redundantly connected from the protection system to the working communication control unit, and thus the working system communication control unit and the protection system communication are not connected. There is an effect that both control units can be simultaneously prevented from becoming a trouble.
【図１】本発明の一実施例に係る切替制御方式が適用さ
れた通信制御システムを示すブロック図である。FIG. 1 is a block diagram showing a communication control system to which a switching control method according to one embodiment of the present invention is applied.
【図２】本実施例の切替制御方式による接続切替時の動
作を示すタイミングチャートである。FIG. 2 is a timing chart showing an operation at the time of connection switching by the switching control method of the present embodiment.
１ システム制御装置 ２ 現用系の通信制御装置 ３ 予備系の通信制御装置 ２１ 現用系の通信制御部 ２２ 現用系の切替接続部 ２３ 現用系の切替制御部 ２４ 現用系の回線対応部 ３１ 予備系の通信制御部 ２２ 予備系の切替接続部 ２３ 予備系の切替制御部 ２４ 予備系の回線対応部 １０１，１０２ 障害報告信号 １０３，１０４ 切替指示 ０Ａ，０Ｂ 現用系の接続状態信号 １Ａ，１Ｂ 予備系の接続状態信号 ２０１〜２０４ 接続ケーブル REFERENCE SIGNS LIST 1 System control device 2 Working communication control device 3 Standby communication control device 21 Working communication control unit 22 Working switching connection unit 23 Working switching control unit 24 Working line corresponding unit 31 Standby protection unit Communication control unit 22 Switching connection unit of standby system 23 Switching control unit of standby system 24 Line control unit of standby system 101, 102 Failure report signal 103, 104 Switching instruction 0A, 0B Connection state signal of active system 1A, 1B Standby system Connection status signal 201-204 Connection cable
Claims (1)
制御装置と、システム制御装置とを備え、現用系の通信
制御部の障害発生時に前記現用系の通信制御装置から障
害報告信号を受けた前記システム制御装置が前記現用系
の通信制御装置および前記予備系の通信制御装置に切替
指示を出して現用系の回線対応部を予備系の通信制御部
に切替接続し予備系の回線対応部を前記現用系の通信制
御部に切替接続する通信制御システムにおいて、 前記現用系の通信制御部および前記予備系の通信制御部
の両方にそれぞれ物理的に接続された前記現用系の回線
対応部および前記予備系の回線対応部と、前記システム制御 装置からの切替指示があると前記現用
系の回線対応部と前記現用系の通信制御部との接続状態
信号および前記予備系の回線対応部と前記予備系の通信
制御部との接続状態信号を未接続状態とし前記システム
制御装置から前記現用系の通信制御装置に出される切替
指示と前記システム制御装置から前記予備系の通信制御
装置に出される切替指示との出力時間差よりも長い所定
時間後に前記予備系の回線対応部と前記現用系の通信制
御部との接続状態信号および前記現用系の回線対応部と
前記予備系の通信制御部との接続状態信号を接続状態と
する現用系の切替制御部および予備系の切替制御部と、 これら現用系の切替制御部および予備系の切替制御部か
らの接続状態信号に応じて前記現用系の回線対応部およ
び前記予備系の回線対応部と前記現用系の通信制御部お
よび前記予備系の通信制御部との論理的な接続を切り替
える現用系の切替接続部および予備系の切替接続部とを
有することを特徴とする切替制御方式。An active communication control device and a standby communication
A control unit and a system control unit , wherein when a failure occurs in the active communication control unit, the active communication control unit
The system control device that has received the harm report signal is
Switch to the communication control device of
A communication control system for issuing an instruction to switch and connect the working line corresponding unit to the standby communication control unit and to switch and connect the standby line corresponding unit to the working communication control unit; and parts and the spare system communication control unit respectively both physically connected to said active system line interface unit and the standby system line interface portion of the active system and there is a switching instruction from the system controller the system was of a connection state signal to the line interface and the connection status signal to the communication control unit of the working system and the standby system line interface and the standby system of the communication control unit of the unconnected state
Switching issued from the control device to the working communication control device
Instruction and communication control of the standby system from the system controller
After a predetermined time longer than the output time difference from the switching instruction issued to the device, a connection state signal between the protection-system line corresponding unit and the working communication control unit and communication between the working line corresponding unit and the protection system. A switching control unit for the active system and a switching control unit for the standby system for connecting the connection state signal to the control unit, and a switching control unit for the active system and a switching control unit for the standby system. An active system switching connection unit and a standby system switching connection for switching a logical connection between a working line corresponding unit and the standby system line corresponding unit and the working system communication control unit and the standby system communication control unit. And a switching control method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18585391A JP3228299B2 (en) | 1991-07-01 | 1991-07-01 | Switching control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18585391A JP3228299B2 (en) | 1991-07-01 | 1991-07-01 | Switching control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0514322A JPH0514322A (en) | 1993-01-22 |
| JP3228299B2 true JP3228299B2 (en) | 2001-11-12 |
Family
ID=16178028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18585391A Expired - Fee Related JP3228299B2 (en) | 1991-07-01 | 1991-07-01 | Switching control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3228299B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5885648B2 (en) * | 2012-12-18 | 2016-03-15 | 株式会社小松製作所 | Drilling tooth and drilling tool |
| EP3088116B1 (en) | 2013-12-25 | 2018-06-27 | Senju Metal Industry Co., Ltd. | Vacuum soldering apparatus and control method therefor |
-
1991
- 1991-07-01 JP JP18585391A patent/JP3228299B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0514322A (en) | 1993-01-22 |
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