JPH01296730A - Digital transmission system - Google Patents

Digital transmission system

Info

Publication number
JPH01296730A
JPH01296730A JP12687988A JP12687988A JPH01296730A JP H01296730 A JPH01296730 A JP H01296730A JP 12687988 A JP12687988 A JP 12687988A JP 12687988 A JP12687988 A JP 12687988A JP H01296730 A JPH01296730 A JP H01296730A
Authority
JP
Japan
Prior art keywords
channel
order group
signal
bipolar
low
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.)
Granted
Application number
JP12687988A
Other languages
Japanese (ja)
Other versions
JPH0683165B2 (en
Inventor
Yoshimasa Fujita
佳賢 藤田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP12687988A priority Critical patent/JPH0683165B2/en
Publication of JPH01296730A publication Critical patent/JPH01296730A/en
Publication of JPH0683165B2 publication Critical patent/JPH0683165B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To switch a channel caused by bipolar violation into a standby channel by generating the bipolar violation by intention to a low-order group output signal of a channel in which the bipolar violation is caused in the low-order group input signal. CONSTITUTION:When bipolar violation takes place in a signal on a channel k2 (1<k<n) of any of channels 12,..., n2 and the value exceeds an existing threshold level, the channel information is detected by a bipolar violation detection circuit 202 and the result of detection is given to a service data of a high- order group signal 203. The service data is analyzed by a bipolar violation generating circuit 302 to cause bipolar violation on a signal on the channel k3 by intention. A switcher control circuit 401 detects the bipolar violation to switch the channel k3 in the switcher 402 to the standby channel P3 and a switching command signal 403 switches the channel k2 to the standby channel P2 by the switcher control circuit 101. Thus, the channel is kept to the normal state.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、デジタル信号を多重化して伝送する方式に利
用する。特に、低次群側チャネルのバイポーラ反則情報
の転送手段に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is applied to a system for multiplexing and transmitting digital signals. In particular, the present invention relates to a means for transmitting bipolar foul information of a low-order group side channel.

〔概要〕〔overview〕

本発明は、低次群信号を多重化して高次群信号として伝
送するデジタル伝送方式において、低次群入力信号にバ
イポーラ反則が生じたチ；ネルの低次群出力信号に故意
にバイポーラ反則を発生させることにより、 バイポーラ反則の起こったチャネルをスタンバイチャネ
ルに切替えることができるようにしたものである。In a digital transmission system in which low-order group signals are multiplexed and transmitted as high-order group signals, the present invention intentionally generates bipolar fouling in the low-order group output signal of a channel in which bipolar fouling has occurred in the low-order group input signal. This allows the channel where a bipolar violation occurred to be switched to a standby channel.

〔従来の技術〕[Conventional technology]

従来、バイポーラ反則情報を高次群出力信号のサービス
データにのせて転送することは行われていなかった。Conventionally, bipolar foul information has not been transferred along with the service data of the higher-order group output signal.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

このような従来例では、バイポーラ反則の情報を高次群
出力信号のサービスデータにのせなかったので、特定の
低次群出力チャネルに故意にバイポーラ反則を発生させ
ることができなかった。In such a conventional example, bipolar foul information was not included in the service data of the high-order group output signal, so it was not possible to intentionally cause a bipolar foul to occur in a specific low-order group output channel.

本発明はこのような欠点を除去するもので、低次群出力
チャネルにバイポーラ反則を発生することができるデジ
タル伝送方式を提供することを目的とする。SUMMARY OF THE INVENTION The present invention aims to eliminate such drawbacks and provides a digital transmission system capable of generating bipolar faults in low-order output channels.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は、低次群人力信号を多重化して高次群信号を生
成する多重化回路を有する第一装置と、この第一装置か
ら到来する高次群信号を多重分離して低次群出力信号を
生成する多重分離回路を有する第二装置とを備えたデジ
タル伝送方式において、上記第一装置は、闇値を超える
回数のバイポーラ反則を生じた低次群人力信号を伝送す
るチャネルを検出し、この検出結果情報を高次群信号の
サービスデータに含ませる反則検出手段を有し、上記第
二装置は、高次群信号のサービスデータ上の上記反則検
出手段の検出結果情報に基づきバイポーラ反則を生じた
チャネルを特定し、このチャネルで伝送される低次群出
力信号にバイポーラ反則を発生させる反則発生手段を有
することを特徴とする。The present invention includes a first device having a multiplexing circuit that multiplexes low-order group human input signals to generate a high-order group signal, and multiplexing and demultiplexing the high-order group signals coming from the first device to generate a low-order group output signal. and a second device having a demultiplexing circuit, the first device detects a channel transmitting a low-order group human signal that has caused bipolar fouling a number of times exceeding the dark value, and detects the detection result. further comprising a foul detection means for including information in the service data of the higher order group signal, the second device identifying a channel in which a bipolar foul has occurred based on the detection result information of the foul detection means on the service data of the higher order group signal; The present invention is characterized in that it includes fouling generating means for generating bipolar fouling in the low-order group output signal transmitted through this channel.

〔作用〕[Effect]

低次群側入力信号のバイポーラ反則を検出して高次群側
出力信号のサービスデータにその情報をのせる。高次群
側人力信号のサービスデータの内容を解析して特定の低
次群側出力信号に故意にバイポーラ反則を起こさせる。Bipolar fouling of the input signal on the low-order group side is detected and the information is added to the service data of the output signal on the high-order group side. The content of the service data of the human input signal on the higher-order group side is analyzed to intentionally cause a bipolar violation in a specific output signal on the lower-order group side.

〔実施例〕〔Example〕

以下、本発明の一実施例を図面に基づき説明する。図は
この実施例の構成を示すブロック構成図である。図の破
線内が本発明にかかわる部分であり、低次群入力信号１
１．２１、　、ｎｌを入力し、高次群信号２０３を出力
する多重化回路２０１　と、バイポーラ反則検出回路２
０２と、多重分離回路３０１と、高次群信号２０３のサ
ービスデータを解析し、特定低次群チャネルのバイポー
ラ反則値が一定値以上ならば低次群出力信号１４．２４
、　、ｎ４に故意にバイポーラ反則を起こさせるバイポ
ーラ反則発生回路３０２　とを備える。すなわち、この
実施例は、低次群入力信号１１．２１、　、ｎｌを多重
化して高次群信号２０３を生成する多重化回路２０１を
有する第一装置と、この第一装置から到来する高次群信
号２０３を多重分離して低次群出力信号１４．２４１、
ｎ４を生成する多重分離回路３０１を有する第二装置と
を備え、上記第一装置は、闇値を超える回数のバイポー
ラ反則を生じた低次群入力信号を伝送するチャネルを検
出し、この検出結果情報を高次群信号のサービスデータ
に含ませる反則検出手段であるバイポーラ反則検出回路
２０２を有し、上記第二装置は、高次群信号２０３のサ
ービスデータ上の上記反則検出手段の検出結果情報に基
づきバイポーラ反則を生じたチャネルを特定し、このチ
ャネルで伝送される低次群出力信号にバイポーラ反則を
発生させる反則発生手段であるバイポーラ反則発生回路
３０２を有する。Hereinafter, one embodiment of the present invention will be described based on the drawings. The figure is a block configuration diagram showing the configuration of this embodiment. The part within the broken line in the figure is related to the present invention, and the low-order group input signal 1
1.21, a multiplexing circuit 201 that inputs nl and outputs a high-order group signal 203, and a bipolar foul detection circuit 2
02, the demultiplexing circuit 301, and the service data of the high-order group signal 203, and if the bipolar foul value of the specific low-order group channel is above a certain value, the low-order group output signal 14.24
, , n4 intentionally causes a bipolar foul to occur. That is, this embodiment includes a first device having a multiplexing circuit 201 that multiplexes low-order group input signals 11.21, , nl to generate a high-order group signal 203, and a high-order group signal 203 arriving from this first device. Demultiplex and demultiplex low-order group output signal 14.241,
a second device having a demultiplexing circuit 301 that generates a signal n4; It has a bipolar foul detection circuit 202 which is a foul detection means for including information in the service data of the higher order group signal, and the second device detects a bipolar foul based on the detection result information of the foul detection means on the service data of the higher order group signal 203. The present invention includes a bipolar fault generation circuit 302 which is a fault generating means for specifying a channel in which a problem occurs and generating a bipolar fault in a low-order group output signal transmitted through this channel.

次に、この実施例の動作を説明する。低次群人力信号１
１．２１、　ｎｌはスイッチャ１０２を経由して多重化
回路２０１に人力する。ここで、チャネルＰ２はスタン
バイチャネルである。このときに、チャネル１２、　、
ｎ２のいずれかひとつのチャネルに２　（１＜ｋ＜ｎ）
上の信号にバイポーラ反則が生じ、その値が既定のスレ
ッシユホルドを超えたときにそのチャネル情報をバイポ
ーラ反則検出回路２０２で検出し、この検出結果を高次
群信号２０３のサービスデータにのせる。このサービス
データをバイポーラ反則発生回路３０２で解析し、チャ
ネルに３　（１＜ｋ＜ｎ）上の信号に故意にバイポーラ
反則を発生させる。スイッチャ制御回路４０１がこのバ
イポーラ反則を検出し、スイッチャ４０２の中のチャネ
ルに３をスタンバイのチャネルＰ３に切替える。これと
ともに、切替指令信号４０３によってスイッチャ制御回
路１０１でチャネルに２をスタンバイのチャネルＰ２に
切替える。Next, the operation of this embodiment will be explained. Low order group human power signal 1
1.21, nl is input to the multiplexing circuit 201 via the switcher 102. Here, channel P2 is a standby channel. At this time, channel 12, ,
2 for any one channel of n2 (1<k<n)
When a bipolar fault occurs in the above signal and its value exceeds a predetermined threshold, the bipolar fault detection circuit 202 detects the channel information, and the detection result is added to the service data of the higher order group signal 203. This service data is analyzed by a bipolar fault generation circuit 302, and a bipolar fault is intentionally generated in the signal on channel 3 (1<k<n). Switcher control circuit 401 detects this bipolar fault and switches channel 3 in switcher 402 to standby channel P3. At the same time, in response to the switching command signal 403, the switcher control circuit 101 switches channel 2 to standby channel P2.

〔発明の効果〕〔Effect of the invention〕

本発明は、以上説明したように、多重化回路でバイポー
ラ反則を検出し、それを転送し、多重分離回路でその情
報を解析してバイポーラ反則を起こさせるので、バイポ
ーラ反則が起こったチャネルスタンバイチャネルに切替
えてそのチャネルを正常状態に保持することができる効
果がある。As explained above, the present invention detects a bipolar fault in a multiplexing circuit, transfers it, and analyzes the information in a demultiplexing circuit to cause a bipolar fault to occur. This has the effect of allowing the channel to be maintained in a normal state by switching to

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明実施例の構成を示すブロック構成図。 １１．２１、　、ｎｌ・・・低次群入力信号、１２．２
２１、ｎ２、Ｐ２．１３．２３、　、ｎ３、Ｐ　３　・
・・チャネル、１４．２４、　、ｎ４・・・低次群出力
信号、１０１．４０１・・・スイッチャ制御回路、１０
２．４０２・・・スイッチャ、２０１・・・多重化回路
、２０２・・・バイポーラ反則検出回路、２０３・・・
高次群信号、３０１・・・多重分離回路、３０２・・・
バイポーラ反則発生回路、４０３・・・切替指令信号。The figure is a block configuration diagram showing the configuration of an embodiment of the present invention. 11.21, , nl...low-order group input signal, 12.2
21, n2, P2.13.23, , n3, P 3 ・
... Channel, 14.24, , n4 ... Low-order group output signal, 101.401 ... Switcher control circuit, 10
2.402... Switcher, 201... Multiplexing circuit, 202... Bipolar foul detection circuit, 203...
High order group signal, 301... demultiplexing circuit, 302...
Bipolar foul generation circuit, 403... switching command signal.

Claims (1)

【特許請求の範囲】 １、低次群入力信号を多重化して高次群信号を生成する
多重化回路を有する第一装置と、 この第一装置から到来する高次群信号を多重分離して低
次群出力信号を生成する多重分離回路を有する第二装置
と を備えたデジタル伝送方式において、 上記第一装置は、閾値を超える回数のバイポーラ反則を
生じた低次群入力信号を伝送するチャネルを検出し、こ
の検出結果情報を高次群信号のサービスデータに含ませ
る反則検出手段を有し、上記第二装置は、高次群信号の
サービスデータ上の上記反則検出手段の検出結果情報に
基づきバイポーラ反則を生じたチャネルを特定し、この
チャネルで伝送される低次群出力信号にバイポーラ反則
を発生させる反則発生手段を有する ことを特徴とするデジタル伝送方式。[Claims] 1. A first device having a multiplexing circuit that multiplexes low-order group input signals to generate a high-order group signal; and a device that demultiplexes the high-order group signals coming from the first device and outputs the low-order group signals. and a second device having a demultiplexing circuit that generates a signal, wherein the first device detects a channel transmitting a low-order group input signal that has caused a bipolar foul a number of times exceeding a threshold; The second device includes a foul detecting means for including this detection result information in the service data of the high order group signal, and the second device detects the channel in which the bipolar foul has occurred based on the detection result information of the foul detecting means on the service data of the high order group signal. 1. A digital transmission system, comprising: a fault generating means for generating a bipolar fault in a low-order group output signal transmitted on this channel.
JP12687988A 1988-05-24 1988-05-24 Digital transmission system Expired - Lifetime JPH0683165B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12687988A JPH0683165B2 (en) 1988-05-24 1988-05-24 Digital transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12687988A JPH0683165B2 (en) 1988-05-24 1988-05-24 Digital transmission system

Publications (2)

Publication Number Publication Date
JPH01296730A true JPH01296730A (en) 1989-11-30
JPH0683165B2 JPH0683165B2 (en) 1994-10-19

Family

ID=14946108

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12687988A Expired - Lifetime JPH0683165B2 (en) 1988-05-24 1988-05-24 Digital transmission system

Country Status (1)

Country Link
JP (1) JPH0683165B2 (en)

Also Published As

Publication number Publication date
JPH0683165B2 (en) 1994-10-19

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