half-duplex transmission; half-duplex communications
Technical computing term for a communication mode where data can be sent in both directions, but only one direction at a time.
Walkie-talkies use half-duplex communication.
In half-duplex communication, you cannot transmit and receive at the same time.
Standard kanji form for this technical term.
Variant using numeral 2 instead of 二; less common but attested.
Compound of 半 (half), 二重 (double, two-way), and 通信 (communication). A calque from English 'half-duplex'.