SDH與PDH傳送網(wǎng)詞匯D

Data communications channel (DCC) 　數(shù)據(jù)通信通路
    Data communications netwrok (DCN) 　數(shù)據(jù)通信網(wǎng)
    Default 默認值，缺省值
    Defect 　缺陷
    Defect second (DS) 缺陷秒
    Descramble 　解擾
    Differential group delay (DGD) 　微分群時延
    Digit sequence integrity (DSI) 　數(shù)字序列完整性
    Digital cross connect equipment (DXC) 　數(shù)字交叉連接設(shè)備
    Dispersion accommodation (DA) 　色散調(diào)節(jié)
    Dispersion shift single mode fiber (DSM) 色散位移單模光纖
    Dispersion supported transmission (DST) 色散支持傳輸