quadruplex

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quadruplex

(communications)
A kind of telegraphy system developed by Thomas A. Edison in the 1870s combining diplex and duplex communications to support simultaneous transmission of two messages in each direction.
References in periodicals archive ?
According to the automatic grouping of PCR primers by MultiPLX software (Kaplinski et al., 2005), two five-plex sets were obtained from the first ten loci, while one quadplex and one triplex were developed from the later seven loci (Table 1).
The campus is comprised of the following housing and care settings: the Manor (155 skilled nursing beds), the Hearthstone (32 assisted living units), and the Villas (72 quadplex villa units).
In our quadplex bungalow neighborhoods, I see high density.
It can be configured for a variety of applications including alternating or non-alternating duplex, duplex separate pump stop, triplex, and quadplex applications.
Other features include: two 2" sleeves with covers, 1 live quadplex outlet, automatic defrost, fluorescent interior light and an adjustable control range from 2 C to 10 C, preset at C.
Every single-family home, duplex, triplex or quadplex in this neighborhood has a water view.