发明名称 |
Supervisory apparatus for transmission lines |
摘要 |
A supervisory apparatus able to prevent recirculation of a supervisory frame when sending a supervisor frame for supervision, which supervises an optical communications apparatuses connected to transmission lines in cooperation with the same by adding a sequence number to a supervisory frame when sending the supervisory frame.
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申请公布号 |
US6671469(B1) |
申请公布日期 |
2003.12.30 |
申请号 |
US20000499728 |
申请日期 |
2000.02.08 |
申请人 |
FUJITSU LIMITED |
发明人 |
FUKAGAWA TAKASHI;KUMANO SATOSHI;TERAI NOBORU;OKI KATSUHIRO;KUROKAWA TAKATSUGU |
分类号 |
H04B10/02;H04B10/08;H04B10/20;H04B17/00;H04L29/08;(IPC1-7):H04B10/17 |
主分类号 |
H04B10/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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