IDUGInternational DB2 Users Group
IAPPIndustrial Automation Planning Panel / International Association of Presentation Professionals
ABMEAsynchronous Balanced Mode Extended
PTANPerformance Testing Alliance for Networks
NDNNational Distribution Network / Non-Delivery Notification
ROTFLroll(ing) on the floor laughing (also ROFL; ROFL)
DHHSDepartment of Health and Human Services
MLPMaynard List Price / MultiLink Procedures / MultiLink Protocol
CTOSConvergent technologies Operating System
BITNICBITNET Network Information Center
MACMacintosh Computer / Management and Administrative Computing / Media Access Control / Medium Access Control / Message Authentication / Multi Access Computers / Multiplexed Analog Components
TELOPTELeconference OPerator
HHO1/2KHa Ha Only Half Kidding
IBNI'm Buck Naked / Integrated Business Network
ROFFNARRolling on the Floor for no Apparent Reason