See call-second.

1. In telephony, pertaining to the operation of a selector or other similar device to find and establish a connection with an idle circuit of a chosen group.
2. Pertaining to the failure of a device to achieve a state of equilibrium, usually by alternately overshooting and undershooting the point of equilibrium.

Hardware

1. A functional unit in which two or more different technologies are combined to satisfy a given requirement.
Note: Examples of hybrids include (a) an electronic circuit having both vacuum tubes and transistors, (b) a mixture of thin-film and discrete integrated circuits, and (c) a computer that has both analog and digital capability.
2. A resistance hybrid.
3. A hybrid… (Read More →)

An expression of the degree of electrical symmetry between two impedances connected to two conjugate sides of a hybrid set or resistance hybrid.
Note 1: Hybrid balance is usually expressed in dB.
Note 2: If the respective impedances of the branches of the hybrid that are connected to the conjugate sides of the hybrid are known, hybrid balance may be… (Read More →)

An optical communications cable having two or more different types of optical fibers, e.g., single-mode and multimode fibers.

A single transformer that effectively has three windings, and which is designed to be configured as a circuit having four branches, i.e., ports, that are conjugate in pairs.
Note: The primary use of a hybrid coil is to convert between 2-wire and 4-wire operation in concatenated sections of a communications circuit. Such conversion is necessary when repeaters are introduced in… (Read More →)

A communications network that uses a combination of line facilities, i.e., trunks, loops, or links, some of which use only analog or quasi-analog signals and some of which use only digital signals. Synonyms hybrid network, hybrid system.

A computer that processes both analog and digital data.

A connector that contains contacts for more than one type of service.
Note: Examples of hybrid connectors are those that have contacts for both optical fibers and twisted pairs, electric power and twisted pairs, or shielded and unshielded twisted pairs.