FTTD缩写的意思

ASC SOC DVVI Bps NDS GPS APARS SSG ETE IM CTDM UMTS mcu DCN CSE SSM EEROM DCT DPON STB DFSK DTD RIP ESC AP EWT QDOS ppm EF EAF SFB APADAS IS-IS DVC MADP ASI CICS AJG S3 CRC DL FED FCN DS GDPS CC EFCI CPS GIMM CNCC DTP CPM ABDL CAI EELS NCBA RAID DFOS AFC IOB