In operations research, a procedure for locating the maximum or minimum of a linear function of variables that are subject to linear constraints. Synonym linear optimization.

See network topology.

The property of a system in which, if input signals X and Y result in system output S(X) and S(Y) respectively, the input signal aX + bY will result in the output aS(X) + bS(Y), where S is the system transfer function and a and b are scalars.

A mode for which the field components in the direction of propagation are small compared to components perpendicular to that direction.
Note: The LP description is an approximation that is valid for a weakly guiding optical fiber, including typical telecommunications grade fibers.

See spectral width.

1. The communications facilities between adjacent nodes of a network. Synonym [loosely] telecommunications link.
2. A portion of a circuit connected in tandem with, i.e., in series with, other portions.
3. A radio path between two points, called a radio link.
4. In communications, a general term used to indicate the existence of communications facilities between two points. [JP 1-02]… (Read More →)

The process of provisioning signaling links with physically separate transmission routes between signaling points to mitigate impact of facility failures. [T1.226-1992]

1. The application of on-line crypto-operation to a link of a communications system so that all information passing over the link is encrypted in its entirety. [JP1-02]
2. Encryption of information between nodes of a communications system. [INFOSEC-99]

Deprecated term for Data Link Layer. See Open Systems Interconnection--Reference Model.

In the hierarchical structure of a primary or secondary station, the conceptual level of control or data processing logic that controls the data link.
Note: Link-level functions provide an interface between the station high-level logic and the data link. Link-level functions include (a) transmit bit injection and receive bit extraction, (b) address and control field interpretation, (c) command response generation,… (Read More →)