written request; requisition
request for budgetary appropriations
chemical oxygen demand; COD
overriding necessity; absolute requirement; an absolute must
biochemical oxygen demand; BOD
dialogue establishment request outstanding
handshake request outstanding
request for forwarding address; PD PR
Automatic Request for Repetition; ARQ
ARQ; Automatic Repeat reQuest
receipt notification request indication
non-receipt notification request indication
originator requested alternate recipient
partial-attribute-request
requester; requesting SS user