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JPH09509028A Expired / Lapsed JP ⏱️ 0.0 years remaining

Communication network having line switching protection device

Assignee: ジーピーティ リミテッド
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Filing: 1995-02-10
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Granted: —
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Expires: 2015-02-10
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Abstract

Abstract Translated from Japanese (57)【要約】 相互接続された複数のノード(1,2,3,4)を含むSDH(同期ディジタル階層)通信網を開示する。前記各ノード対(1,2および3,4)間に、作動チャネル(5,6)と、複数の作動チャネル(5,6)として機能する一個の保護チャネル(5)とが規定され、作動チャネルでの障害時には、作動チャネル(6)上を第一ノード(3)から第二ノード(4)へ送られる通信信号は、前記保護チャネル(7)に切り替えられる。第一ノード(3)は、通信信号と共にチャネル追跡信号を送るよう動作し、この追跡信号は各チャネルを識別するものである。第二ノード(4)は、第二ノードを終端ノードとする保護チャネル(7)上にチャネル追跡信号があるかを監視し、追跡信号があるときには、保護チャネル(7)上の追跡信号に関連する通信信号を第二ノード(4)に切り替え送信し、さらに他の宛て先への接続のために備える。 (57) [Summary] An SDH (Synchronous Digital Hierarchy) communication network including a plurality of interconnected nodes (1, 2, 3, 4) is disclosed. An activation channel (5, 6) and a protection channel (5) functioning as a plurality of activation channels (5, 6) are defined and activated between each pair of nodes (1, 2 and 3, 4). In case of channel failure, the communication signal sent from the first node (3) to the second node (4) on the working channel (6) is switched to the protection channel (7). The first node (3) is operative to send a channel tracking signal along with the communication signal, the tracking signal identifying each channel. The second node (4) monitors whether there is a channel tracking signal on the protection channel (7) terminating at the second node, and when there is a tracking signal, it relates to the tracking signal on the protection channel (7). The communication signal to be transmitted is switched to the second node (4) and transmitted, and further prepared for connection to another destination.

Inventors

  • 👤 チャップマン,ステファン,テイラー

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-09 08:47
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/08; H04J3/085; H04J2203/00; H04J2203/0001; H04J2203/0028; H04J2203/0039; H04J2203/0044; H04J2203/0057; H04J2203/006

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