double-duplex

double-duplex

(communications)
(From telegraphy) A full-duplex link with two telegraphers (a sender and a receiver) at each end, to simultaneously transmit in both directions.

Compare: single-duplex.
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References in periodicals archive ?
20 Verandha Place in Cobble Hill is a landmarked pre-Civil War carriage house that has been converted to a double-duplex.
As per the statement of Fretz, The upgrade will make the lift station a double-duplex style facility, which can be operated as two separate stations if needed, in case of a breakdown or maintenance needs.