AT缩写的意思

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