V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
DTR
       Draft Technical Report
V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
DTR
       Data Terminal Ready (MODEM, RS-232)
V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
DTR
       DeskTop Replacement [notebook]
V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
DTR
       DeskTop Reproduction (DTP)
V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
DTR
       Document Filing and Retrieval (DOAM, ISO, IEC, DIS 10166-1 f.)
The Free On-line Dictionary of Computing (30 December 2018):
Data Terminal Ready
DTR
    (DTR) The wire in a full RS-232 connection
   that tells the Data Communication Equipment (DCE, typically
   a modem) that the Data Terminal Equipment (DTE, typically
   a computer or terminal) is ready to transmit and receive
   data.
   (2000-04-05)