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| English | Russian |
| full duplex | полный дуплекс (A system capable of simultaneously transmitting information in both directions over a communications channel) |
| half-duplex | полудуплекс (Two-way electronic communication that takes place in only one direction at a time) |
| half-duplex | полудуплексный (Of or pertaining to two-way communication that takes place in only one direction at a time) |