System and method for communicating fault type and fault location messages
    33.
    发明授权
    System and method for communicating fault type and fault location messages 有权
    用于通信故障类型和故障定位消息的系统和方法

    公开(公告)号:US06912667B1

    公开(公告)日:2005-06-28

    申请号:US10094247

    申请日:2002-03-08

    CPC classification number: H04L1/24 H04J3/14 H04J2203/006

    Abstract: A system and method are provided for transporting FTFL messages in a G.709 network-connected simplex device. The method comprises: receiving messages from a first source in a digital wrapper frame format with overhead bytes in every frame; recovering FTFL information from the received message overhead bytes; and, selectively supplying modified FTFL information for transmit message overhead bytes to the first source. Recovering FTFL information from the received message overhead bytes includes recovering a 256 byte FTFL message, including a 128-byte forward message and a 128-byte backward message. Selectively supplying modified FTFL information for transmit message overhead bytes to the first source includes the substeps of: examining the received messages to determine errors; generating a backward message to report the determined errors; overwriting the received backward message with the generated backward message to create the modified FTFL information; and, in response to overwriting the received backward message with the generated backward message, sending a FTFL_status_out signal. Then, the method further comprises: transmitting messages to the first source with the modified FTFL information in response to the FTFL_status_out signal.

    Abstract translation: 提供了一种在G.709网络连接的单工设备中传送FTFL消息的系统和方法。 该方法包括:以数字包装帧格式接收来自第一源的消息,每帧中开销字节; 从接收的消息开销字节恢复FTFL信息; 并且向第一源选择性地提供用于发送消息开销字节的修改的FTFL信息。 从接收到的消息开销字节恢复FTFL信息包括恢复包括128字节转发消息和128字节反向消息的256字节FTFL消息。 将传输消息开销字节的修改的FTFL信息选择性地提供给第一源包括以下子步骤:检查接收到的消息以确定错误; 产生反向消息来报告确定的错误; 用生成的反向消息覆盖所接收的反向消息以创建修改的FTFL信息; 并且响应于利用生成的反向消息重写所接收的反向消息,发送FTFL_status_out信号。 然后,该方法还包括:响应于FTFL_status_out信号,将具有修改的FTFL信息的消息发送到第一源。

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