PMDPhysical Medium Dependent (Sublayer) / PostMaster Daemon (usually as pmd)
NEXTNear End X-Talk / Near-End Cross Talk
AOSIPAirline Open Systems Interconnection Profile
PVCPermanent Virtual Channel / Permanent Virtual Circuit(s) / Permanent Virtual Connection / Permanent Virtual Connections / Polyvinyl Chloride
SASFESEF/AIS Alarm Signal
MPWMacintosh Programmers' Workshop
PIAPain in the as* / Peripheral Interface Adapter / Plug-In Administrator /
HUTGHigh Usage Trunk Group
VMCFVirtual Machine Communications Facility
BSSBasic Synchronized Subset
CIUCommunications Interface Unit
SVIDSystem V Interface Definition
MSAUMulti-Station Access Unit
AIIMAssociation for Information and Image Management
NIUFNorth american ISDN Users' Forum
GFRGrim File Reaper (pervasive data destroyer)
PMDPhysical Medium Dependent (Sublayer) / PostMaster Daemon (usually as pmd)