DD-50 means 50-pin D-SUB
series D subminiature connector in
Hardware
Similar to DD-50
ADTM - Apollo Desktop Teleconferencing Module
ADU - Analog-to-Digital Unit
ADU - Automatic Duplex Unit
ADV - Almost Dead Video
AEC - Automatic Emulation Change
AEMS - Advanced Environmental Monitoring System
AFA - Architecture Feasibility Assessment
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