JPH01119131A - Alarm transfer system - Google Patents
Alarm transfer systemInfo
- Publication number
- JPH01119131A JPH01119131A JP27580487A JP27580487A JPH01119131A JP H01119131 A JPH01119131 A JP H01119131A JP 27580487 A JP27580487 A JP 27580487A JP 27580487 A JP27580487 A JP 27580487A JP H01119131 A JPH01119131 A JP H01119131A
- Authority
- JP
- Japan
- Prior art keywords
- relay device
- optical
- intermediate relay
- error
- terminal station
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 23
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000003780 insertion Methods 0.000 abstract description 5
- 230000037431 insertion Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
Landscapes
- Detection And Prevention Of Errors In Transmission (AREA)
- Dc Digital Transmission (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、中間中継装置を介し端局中継装置間で伝送フ
レーム内余剰ビットにより監視警報情報を転送する方式
に係り、特に中間中継装置の受信障害時に伝送システム
における現用、予備切替を可能ならしめた警報転送方式
に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method of transferring monitoring alarm information between terminal relay devices via an intermediate relay device using surplus bits in a transmission frame, and particularly relates to a method for transmitting monitoring alarm information between end station relay devices via an intermediate relay device. This invention relates to an alarm transfer system that enables switching between active and backup transmission systems in the event of a reception failure.
これまでの幹線系の伝送システムｌこおいて、部局中継
装置一端局中継装置間、端局申継装置−中間中継装置間
り監視警報（ＳＶ）情報を転送する場合には、文献［中
容量元ファイバケーブル伝送方式」（施−３３−８、負
１１６−１２５ ） ＃こ示されているものが知られて
いる。これによる場合情報伝送路とは別ｌこ、介在対等
を利用したデータ線が設けられ、これを利用して監視警
報情報が転送されるようになっている。In conventional trunk line transmission systems, when transmitting monitoring alarm (SV) information between a department relay device and an end station relay device, or between an end station relay device and an intermediate relay device, the literature [Medium capacity ``Original Fiber Cable Transmission System'' (Se-33-8, Negative 116-125) #The one shown is known. In this case, a data line using an intervening peer is provided separately from the information transmission path, and monitoring alarm information is transferred using this.
これまでにあっては専用のデータ線が要されていたもの
であるが、光ＰＣＭ伝送においてはケーブルのノンメタ
リック化等の観点力）ら、介在対等のメタリックケーブ
ルを設けずに情報伝送フレーム内の余剰ビットを利用し
て、監視警報情報を転送する方法が考えられる。しかし
ながら、この方法では中間中継装置において受信障害（
ＲＥＣ）となった場合、中間中継装置のＳＶ情報の転送
が不可となるため、中間中継装置内でＲＥＣ時には内部
クロックによって伝送フレームを立て直してＳＶ情報を
転送しなければならない。しかし、この方法においては
中間中継装置のＲｂＣ＋Ｗ報が伝送フレームり立て直し
のため消えてしまうので、端局側でその障害を検出し得
ないという問題が新たに生じ、ひいては伝送系囚障害に
より現用／予備の切替を行ない得ないという不具合が発
生することになる。Until now, a dedicated data line was required, but in optical PCM transmission, it is now possible to transmit data within the information transmission frame without installing an intervening metallic cable. One possible method is to use the surplus bits of 2 to transfer the monitoring and alarm information. However, with this method, reception failure (
REC), it becomes impossible to transfer the SV information of the intermediate relay device. Therefore, at the time of REC in the intermediate relay device, the transmission frame must be rebuilt using an internal clock and the SV information must be transferred. However, in this method, the RbC+W information of the intermediate relay device disappears due to the rebuilding of the transmission frame, which creates a new problem in that the terminal station cannot detect the failure. This will cause a problem in which backup switching cannot be performed.
本発明の目的は、受信障害に伴い中間中継装置で伝送フ
レームが立て直される場合でも、現用／予備の切替が可
能とされたＳｃ報転送方式を供するにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an SC message transfer system that allows switching between working and backup even when transmission frames are rebuilt at an intermediate relay device due to a reception failure.
上記目的は、伝送系ｌこて現用／予備切替安置となる障
害をＲＥＣエラー（ある特定ＧＩＪ誤り率より劣化した
場合発生する警報）とし、中間中継装置のＲＦＣ時に伝
送フレームを立て直す際、中間中継装置内で強制的にエ
ラーを発生させ、このエラーを端局中継装置に転送する
ことで達成される。The above purpose is to use REC errors (alarms that occur when the GIJ error rate has deteriorated more than a certain specific GIJ error rate) as a failure that causes the transmission system to switch between working and standby, and to This is achieved by forcibly generating an error within the device and transferring this error to the terminal relay device.
上記中間中継装置におけるエラーの発生は、例えば伝送
路の誤り監視をパリティチエツクで行なっている場合は
、中間中継装置のＲＥＣ’時ｔこ立て面された伝送フレ
ーム内のパリティビットとして逆パリティピッＨ−挿入
することで実現し得、これにより端局中継装置において
はそのエラーが検出可能となり、伝送システムの現用／
予備切替が誤動作することなく行ない得るものである。When an error occurs in the intermediate relay device, for example, when a parity check is used to monitor errors in the transmission path, the reverse parity bit H- This can be realized by inserting the
Preliminary switching can be performed without malfunction.
以下、本発明を添付した図（こより説明する。 The present invention will be explained below with reference to the attached drawings.
図は光中間中縫装置２を介し光端局中継装置１゜３間で
データを双方向に伝送する場合を示したものである。図
示の如く光中間中縫装置ｆｆ２はＳ方向α）リピータＲ
ＦＰ−８とこれと同一構成のＲ方向のリピータＲＦＰ−
Ｒとからなり、リピータＲＦＰ−８は具体的には光／電
気変換器４．余剰ピット抽出部５．パリティ検出・発生
部６．セレクタ？、余剰ビット挿入部８．フレーム同期
部９．′醒気／光変換器、オール１１“発生部１１を含
むよう（こして構成されたものとなっている。The figure shows a case where data is transmitted bidirectionally between the optical terminal relay devices 1 and 3 via the optical intermediate sewing device 2. As shown in the figure, the optical intermediate stitching device ff2 is connected to the S direction α) repeater R.
FP-8 and R-direction repeater RFP- with the same configuration
Specifically, the repeater RFP-8 consists of an optical/electrical converter 4.R. Surplus pit extraction section 5. Parity detection/generation section 6. selector? , surplus bit insertion section 8. Frame synchronization section 9. It is constructed so as to include a generating section 11, ``Awakening air/light converter, all 11''.
さて、ここで、光端局中継装置１と光端局中継装置庁２
とＯＪ間で受信障害ＲＦＣが発生した場合を想定すれば
、光／電気変換器４で４気信号に変換さ孔た光信号はフ
レーム同期部９１こ入力され、ここで受１ゴ障讐が検出
されるものとなっている。こ０つ障害検出にもとづき内
部クロックにもとづき伝送フレ一ムが再生される一方、
オールゝ１“発生部１１によって情報ビットをオール１
１“に設定するとともに、パリティ検出・発生部６で生
成されたパリティビットは、反転されたうえセレクタ７
を介し余剰ビット挿入部８でパリティビットとして挿入
されるようになっているものである。パリティビットが
挿入された伝送フレームはその後電気／光変換器１０を
介し光信号として光端局中継装置３１こ伝送されるが、
光端局中継装置３では光中間中縫装置（／Ｊ Ｓ Ｖ情
報を受信し得るばかりか、その受イａ障害をエラーに変
換して検出し得るので、現用／予備切替が可能となるも
のである（・〔発明の効果〕
以上述べた如く本発明によれば、ＳＶ情報そ伝送フレー
ム内の余剰ビットを利用して転送する際、中間中継装置
での障害発生時にも中間中継装置のＳＶ情報がへ局中継
装Ｅ道に転送され得るとともに、現用／予備切替を行な
い得るといった効果がある。Now, here, the optical terminal station relay device 1 and the optical terminal station relay device station 2
Assuming that a reception failure RFC occurs between OJ and OJ, the optical signal converted into a 4Q signal by the optical/electrical converter 4 is input to the frame synchronization unit 91, where the reception failure is detected. It is to be detected. Based on this fault detection, the transmission frame is regenerated based on the internal clock, while
All 1 “The information bits are all 1 by the generation unit 11.
1", and the parity bit generated by the parity detection/generation unit 6 is inverted and sent to the selector 7.
This bit is inserted as a parity bit by the surplus bit insertion unit 8 via the surplus bit insertion section 8. The transmission frame into which the parity bit has been inserted is then transmitted as an optical signal to the optical terminal relay device 31 via the electrical/optical converter 10.
The optical terminal station relay device 3 not only can receive the optical intermediate stitching device (/JSV information), but also converts the reception failure into an error and detects it, making it possible to switch between working and standby. (・[Effects of the Invention] As described above, according to the present invention, when SV information is transferred using surplus bits in a transmission frame, even when a failure occurs in an intermediate relay device, the SV of the intermediate relay device is This has the advantage that information can be transferred to the central office relay equipment and that working/standby switching can be performed.
第１図は、本発明に係る中間中継装置？ｌｌを介し端局
中継装置間でデータを伝送する場合を示す図である。
１．３・・・光端局中継装置
２・・・光中間中縫装置 ４・・・光／を気液換器５・
・・余剰ビット抽出部
６・・・パリティ検出・発生部
７・・・セレクタ ８・・・余剰ビット挿入部９
・・・フレーム同期部 １０・・・電気／光変換器１１
・・・オール、％ １／／発生部FIG. 1 shows an intermediate relay device according to the present invention. FIG. 2 is a diagram showing a case where data is transmitted between terminal relay devices via I. 1.3... Optical terminal station relay device 2... Optical intermediate stitching device 4... Optical/air-liquid exchanger 5...
... Surplus bit extraction section 6... Parity detection/generation section 7... Selector 8... Surplus bit insertion section 9
...Frame synchronization unit 10...Electrical/optical converter 11
...all,% 1//occurrence part
Claims (1)
監視警報情報を主信号伝送フレーム内余剰ビットにより
転送する方式において、中間中継装置の受信障害時該装
置内のクロックによつて伝送フレームを再び立て直した
うえ該装置の監視警報情報を端局中継装置に転送する際
、中間中継装置内で伝送路エラーを強制的に発生させ、
受信障害警報をエラー警報に変換して転送することを特
徴とする警報転送方式。1. In a method in which monitoring and alarm information is transferred between terminal relay devices using surplus bits in the main signal transmission frame with an intermediate relay device intervening in the middle, when there is a reception failure in the intermediate relay device, the information is transmitted by the clock within the device. When the frame is rebuilt and the monitoring alarm information of the device is transferred to the terminal relay device, a transmission path error is forcibly generated within the intermediate relay device,
An alarm transfer method characterized by converting a reception failure alarm into an error alarm and transmitting the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27580487A JPH01119131A (en) | 1987-11-02 | 1987-11-02 | Alarm transfer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27580487A JPH01119131A (en) | 1987-11-02 | 1987-11-02 | Alarm transfer system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01119131A true JPH01119131A (en) | 1989-05-11 |
Family
ID=17560645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27580487A Pending JPH01119131A (en) | 1987-11-02 | 1987-11-02 | Alarm transfer system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01119131A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59226536A (en) * | 1983-06-08 | 1984-12-19 | Hitachi Ltd | Error transfer system |
-
1987
- 1987-11-02 JP JP27580487A patent/JPH01119131A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59226536A (en) * | 1983-06-08 | 1984-12-19 | Hitachi Ltd | Error transfer system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2697519B2 (en) | Intelligent interconnect and data transmission method for broadband optical networks | |
| JPH01119131A (en) | Alarm transfer system | |
| JPS5931904B2 (en) | Power supply system in optical information transmission network | |
| JP2947311B2 (en) | Slave monitoring system in ring communication system | |
| JPS63221725A (en) | Optical transmission system | |
| JP2932359B2 (en) | Fault notification circuit | |
| JPS59119935A (en) | Fault informing system | |
| JP3701525B2 (en) | Optical transmission system and optical transmission device | |
| JP2956391B2 (en) | Subscriber line interface of optical subscriber transmission equipment | |
| JPS6298837A (en) | Trouble monitor system for optical digital transmission line | |
| JPS6141182B2 (en) | ||
| JPH02134041A (en) | Line concentrator system | |
| JPS61187444A (en) | Method for diagnosing station | |
| JPH1093536A (en) | Inter-unit interface system for transmitter | |
| JPS61144943A (en) | Optical local network system | |
| JP2800018B2 (en) | Baseband network system | |
| JP3351881B2 (en) | Data communication method and data communication device | |
| JP3183918B2 (en) | Broadband trunk loop network | |
| JPH11112457A (en) | Fault specifying system for intermediate repeater device | |
| JPH08149101A (en) | Method and device for switching redundant system | |
| JPH0144063B2 (en) | ||
| JPS58172044A (en) | Data highway system | |
| JPS58111541A (en) | Signal transmission system | |
| JPH0481052A (en) | Fault monitoring system for subscriber system digital transmission system | |
| JPS63250926A (en) | Repeating device for optical network |