The devices in SDH network possess the function of extracting timing reference from STM-N.
SDH网络设备必需具有从STM - n线路信号中提取定时参考的功能。
The devices in SDH network must have the function of extracting timing reference from STM-N.
SDH网络设备必须具有从STM - N线路信号中提取定时参考的功能。
The design results of this paper is in order to lay the foundation for forming the transmission network of SDH (STM-N).
本文的设计成果为进一步形成SDH (STM - N)的传输网络奠定了基础。
The design results of this paper is in order to lay the foundation for forming the transmission network of SDH (STM-N).
本文的设计成果为进一步形成SDH (STM - N)的传输网络奠定了基础。
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