sdh(synchronous digital hierarchy) meaning in English

同步数位阶级

The sdh ( synchronous digital hierarchy ) is originally developed from the pdh ( plesiochronous digital hierarchy )
它是目前光纤通信系统中应用最广泛的数字传输体制。
Sdh ( synchronous digital hierarchy ) has some primary advantages such as synchronous multiplexing , standard optical interface and strong network management compared with pdh ( plesiochronous digital hierarchy )
同步数字体制( sdh )与传统的伪同步数字体制( pdh )相比,有三大核心优势,即同步复用、标准光接口和强大的网管能力。
How to transmit high volume data effectively and economically on current sdh ( synchronous digital hierarchy ) transmission network is an important research area in transmission technology . this paper first introduces the background of eos
如何利用现有的sdh ( synchronousdigitalhierarchy )网络高效而经济地传输数据业务，目前正成为传输技术中重要的研究课题。