Delhi On-line Trading System 
Digital Office Timing Supply 
digital-optical technology system 
Directly Observed Treatment, Short-cou… 
Dredging Operations Technical Support 
Dynamic Ocean Tracking System 
Data Object Traceability System 
Department of Transportation Services 
Designated Order Turnaround System 
Directly observed therapy, short cours… 
Directly Observed Treatment Strategy 
Director of Training and Simulations 
Document tracking system 
Dynamic Ocean Track System