V21
V21 or V.21 may refer to :
- ITU V.21, an ITU-T modem recommendation for full-duplex communication between two analogue dial-up modems
- Fokker V.21, a German Fokker D.VII prototype with tapered wings
- Venture 21, an American sailboat design
This is an old revision of this page, as edited by Ahunt (talk | contribs) at 20:12, 7 March 2022 (Venture 21). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
V21 or V.21 may refer to :