JPH03201738A - Modulator and demodulator switching system - Google Patents
Modulator and demodulator switching systemInfo
- Publication number
- JPH03201738A JPH03201738A JP34010089A JP34010089A JPH03201738A JP H03201738 A JPH03201738 A JP H03201738A JP 34010089 A JP34010089 A JP 34010089A JP 34010089 A JP34010089 A JP 34010089A JP H03201738 A JPH03201738 A JP H03201738A
- Authority
- JP
- Japan
- Prior art keywords
- modem
- standby
- center
- switching
- priority
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Detection And Prevention Of Errors In Transmission (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は運用変復調装置と予備変復調装置を切り替える
場合の変復調装置切替方式に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a modem switching system for switching between an operational modem and a standby modem.
従来の技術
従来、複数台のセンタ側変復調装置が各々リモート側変
復調装置と通信しており、センタ側変復調装置切替装置
に変復調装置障害時のバックアップのための予備変復調
装置が１台設置されている構成において、２台以上のセ
ンタ側変復調装置に障害が発生した場合、どの障害発生
変復調装置を予備変復調装置に切り替えるかを人間が判
断し、切替操作を行っていた。Conventional technology Conventionally, multiple center-side modems communicate with remote-side modems, and one standby modem is installed in the center-side modem switching device for backup in the event of a failure of the modem. In this configuration, when a failure occurs in two or more center-side modems, a human determines which modem should be switched to the standby modem and performs the switching operation.
発明が解決しようとする課題
従来の上記方式によれば、複数の変復調装置で障害が発
生した場合、どの変復調装置を予備変復調装置に□切り
替えるかを人間が判断し切替操作を行わなければならな
いために、変復調装置障害発生から予備変復調装置への
切替完了まで時間がかかっていた。Problems to be Solved by the Invention According to the above-mentioned conventional system, if a failure occurs in multiple modems, a person must determine which modem should be switched to the standby modem and perform the switching operation. Moreover, it took a long time from the occurrence of a failure in the modem to the completion of switching to the standby modem.
本発明は従来の上記実情に鑑みてなされたものであり、
従って本発明の目的は、従来の技術に内在する上記課題
を解決し、予め定められた優先順位に従って障害が発生
した適性な変復調装置を短時間で的確に予備変復調装置
に切替えることを可能とした新規な切替方式を提供する
ことにある。The present invention has been made in view of the above-mentioned conventional situation,
Therefore, an object of the present invention is to solve the above-mentioned problems inherent in the conventional technology, and to make it possible to accurately switch a failed modem to a standby modem in a short time according to a predetermined priority order. The objective is to provide a new switching method.
課題を解決するための手段
上記目的を達成する為に、本発明に係る変復調装置切替
方式は、複数台のセンタ側変復調装置が各々リモート側
変復調装置と通信しており、センタ側変復調装置切替装
置に変復調装置障害時のバックアップのための予備変復
調装置が１台設置されている構成において、センタ側変
復調装置切替装置には、運用変復調装置を予備変復調装
置に切り替えるための切替部と、変復調装置障害を検出
する変復調装置障害検出部と、変復調装置の優先順位を
記憶した優先順位記憶部と、これらを制御する制御部と
を備えて構成される。Means for Solving the Problems In order to achieve the above object, the modem switching system according to the present invention includes a plurality of center side modem devices each communicating with a remote side modem device, and a center side modem device switching device communicating with a remote side modem device. In a configuration in which one standby modem is installed as a backup modem in the event of a modem failure, the center side modem switching device includes a switching unit for switching the operating modem to the standby modem, and a switch unit for backing up the modem in the event of a failure of the modem. The present invention includes a modem fault detection section that detects a modem fault, a priority storage section that stores priorities of the modem devices, and a control section that controls them.
実施例
以下本発明をその好ましい一実施例について第１図を参
照して具体的に説明する。EXAMPLE Hereinafter, a preferred embodiment of the present invention will be specifically explained with reference to FIG.
第１図は本発明の一実施例を示すブロック構成図である
。FIG. 1 is a block diagram showing one embodiment of the present invention.
第１図を参照するに、センタ側変復調装置１がセンタ側
変復調装置切替装置６と専用ｔｉ！１１を介してリモー
ト側変復調装置３と接続され、センタ側５変復調装置２
がセンタ側変復調装置切替装置６と専用線１２を介して
リモート側変復調装置４と接続された構成において、セ
ンタ側変復調装置切替装置６内には、変復調装置１およ
び２よりの信号によって変復調装置の障害検出を行う変
復調装置障害検出部１３と、変復調装置１または２を予
備変復調装ｆ５に切り替えるための切替部７．８．９．
１０と、それらを制御する制御部１４と、変復調装置１
．２の優先順位を記憶した優先順位記憶部１５が設けら
れている。Referring to FIG. 1, the center side modem 1 is connected to the center side modem switching device 6 and the dedicated ti! 11 to the remote side modem 3, and the center side 5 modem 2
is connected to the remote modem 4 via the center modem switching device 6 and the dedicated line 12. A modem failure detection unit 13 that performs failure detection, and a switching unit 7.8.9 that switches the modem 1 or 2 to the backup modem f5.
10, a control unit 14 that controls them, and a modulation/demodulation device 1
．． A priority storage section 15 is provided which stores priority orders of 2.
上記の構成において、変復調装ｆ１．２の順で障害が発
生し、変復調装置１を予備変復調装置５に、または変復
調装置２を予備変復調装置５に切り替える方法を以下に
記述する。In the above configuration, a method for switching the modem 1 to the backup modem 5 or the modem 2 to the backup modem 5 when a failure occurs in the modem f1.2 will be described below.
切替部７および８はともに変復調装置１の向きに、切替
部９および１０はともに変復調装置２の向きに切り替わ
っている状態としておく。The switching units 7 and 8 are both switched to face the modem 1 , and the switching units 9 and 10 are both switched to face the modem 2 .
変復調装置１および２は常時自己の状態をチエツクして
おり、自己の障害を検出した場合には、センタ側変復調
装置切替装置６内の変復調装置障害検出部１３に信号を
送り自己の障害を通知する。The modems 1 and 2 constantly check their own status, and when they detect a failure, they send a signal to the modem failure detection unit 13 in the center modem switching device 6 to notify them of the failure. do.
変復調装置１で障害が発生すると、変復調装置障害検出
部１３よりの信号によって制御部１４は切替部７．８を
予備変復調装置５側に切り替えるように制御する。これ
によって変復調装置１が予備変復調装置５によってバッ
クアップされる。When a failure occurs in the modulator/demodulator 1, the control unit 14 controls the switching unit 7.8 to switch to the backup modulator/demodulator 5 side based on a signal from the modulator/demodulator failure detector 13. As a result, the modem 1 is backed up by the backup modem 5.
その後、変復調装置２の障害を変復調装置障害検出部１
３が検出すると、変復調装置障害検出部１３よりの信号
によって制御部１４は、優先順位記憶部１５の内容を参
照し、変復調装置１の優先順位が変復調装置２の優先順
位より高い場合には、切替部７．８．９．１０を現在の
状態のままとする。Thereafter, the modem failure detection unit 1 detects the failure of the modem 2.
3, the control section 14 refers to the contents of the priority storage section 15 based on a signal from the modem failure detection section 13, and if the priority of the modem 1 is higher than the priority of the modem 2, The switching unit 7.8.9.10 is left in its current state.
逆に、変復調装置２の優先順位が変復調装置１の優先順
位より高い場合には、制御部１４は、切替部７．８を変
復調装置１側に戻し、切替部９．１０を予備変復調装置
５側に切り替える。これによって変復調装置２は予備変
復調装置５によってバックアップされる。Conversely, if the priority of the modem 2 is higher than the priority of the modem 1, the control section 14 returns the switching section 7.8 to the modem 1 side, and switches the switching section 9.10 to the preliminary modem 5. Switch to the side. As a result, the modem 2 is backed up by the backup modem 5.
発明の詳細
な説明したように、本発明の変復調装置切替方式によれ
ば、複数台のセンタ側変復調装置が各々リモート側変復
調装置と通信しており、センタ側変復調装置切替装置に
変復調装置障害時のバックアップのための予備変復調装
置が１台設置されている構成において、２台以上のセン
タ側変復調装置に障害が発生した場合、センタ側変復調
装置切替装置に記憶された変復調装置の優先順位を参照
して、優先順位が高い変復調装置を予備変復調装置と切
り替えるために、従来のように障害が発生した変復調装
置のうちどの変復調装置を予備変復調装置に切り替える
かを人間が判断し操作する必要がなくなる。As described in detail, according to the modem switching system of the present invention, a plurality of center-side modem devices are each communicating with a remote-side modem device, and the center-side modem device switching device is notified when a modem failure occurs. In a configuration where one backup modem/demodulator is installed for backup, if a failure occurs in two or more center modem/demodulators, refer to the priority order of the modem stored in the center modem/demodulator switching device. This eliminates the need for humans to judge and operate which modem among the failed modems should be switched to the backup modem, as in the past, in order to switch the modem with a higher priority to the backup modem. .
第１図は本発明の一実施例を示すブロック構成図である
。FIG. 1 is a block diagram showing one embodiment of the present invention.
Claims (1)
調装置と通信しており、センサ側変復調装置切替装置に
変復調装置障害時のバックアップのための予備変復調装
置が１台設置されている構成において、２台以上のセン
タ側変復調装置に障害が発生した場合、前記センタ側変
復調装置切替装置に記憶された優先順位を参照して、優
先順位が高いセンタ側変復調装置のバックアップを常に
行うように運用変復調装置と予備変復調装置を切り替え
ることを特徴とする変復調装置切替方式。In a configuration in which multiple center-side modem devices are each communicating with a remote-side modem device, and one backup modem device is installed in the sensor-side modem switching device for backup in the event of a modem failure, two If a failure occurs in any of the above center-side modem switching devices, the operational modem is configured to always back up the center-side modem with a higher priority by referring to the priorities stored in the center-side modem switching device. A modem switching method characterized by switching a backup modem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34010089A JPH03201738A (en) | 1989-12-28 | 1989-12-28 | Modulator and demodulator switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34010089A JPH03201738A (en) | 1989-12-28 | 1989-12-28 | Modulator and demodulator switching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03201738A true JPH03201738A (en) | 1991-09-03 |
Family
ID=18333718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34010089A Pending JPH03201738A (en) | 1989-12-28 | 1989-12-28 | Modulator and demodulator switching system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03201738A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0583374A (en) * | 1991-09-24 | 1993-04-02 | Nec Commun Syst Ltd | Modulator / demodulator with detour control function |
| WO2000043882A1 (en) * | 1999-01-20 | 2000-07-27 | Fujitsu Limited | Database switching apparatus |
-
1989
- 1989-12-28 JP JP34010089A patent/JPH03201738A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0583374A (en) * | 1991-09-24 | 1993-04-02 | Nec Commun Syst Ltd | Modulator / demodulator with detour control function |
| WO2000043882A1 (en) * | 1999-01-20 | 2000-07-27 | Fujitsu Limited | Database switching apparatus |
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