ITU-T N.51-1988 标准详情
- 标准号:ITU-T N.51-1988
- 中文标题:适用于国际电视传输的定义
- 英文标题:deinitions for application to international televi-sion transmissions
- 标准类别:国际电信联盟标准
- 发布日期:1988-11-01
A television circuit section, circuit, link or connection is considered to be permanent for maintenance purposes if it is always available for use when required, whether or not it is continuously in use. Such a circuit may be used for the purposes of
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