YD/T 1744-2008.Security Protection Requirements for Transport Network. 1范围 YD/T 1744规定了传送网(含光传送网、微波接...
YD通讯标准
YD通讯标准
YD通讯标准
YD/T 1744-2009 传送网安全防护要求
YD/T 1744-2009.Security protection requirements for transport network. 1范围 YD/T 1744规定了传送网(含光传送网、微波接...