摘要
自SDH问世以来 ,经不断补充、完善 ,使系统能满足各种客户信号的传输要求。经最近数年的研究 ,SDH的网络节点接口 (NNI)又有新发展 ,形成较稳定的标准稿 (G .70 7) ,准备通过并执行 ,我国相应的行业标准也已立项修改。
Being improved continuously, SDH can meet the transmmision requirements of various user signals. Through the research in recent years, the SDH network node interface(NNI) has also made new development, resulting in a more steady standard script(G.707) which will be passed and carried out. The corresponding industry standard has been established and modified.
出处
《电信快报》
2000年第9期8-14,共7页
Telecommunications Information
