The operations and operands that form part of an attempted access [10181-3].

A Central Office code assigned by the CO Code Administrator and implemented in the PSTN for specific routing and rating requirements as of the LERG Routing Guide effective date.

A device that requires a source of energy for its operation and has an output that is a function of present and past input signals.
Note: Examples of active devices include controlled power supplies, transistors, LEDs, amplifiers, and transmitters.

Used to differentiate package levels (e.g., item versus pallet).

A condition of readiness for a key to be used to secure information from the originator, and to process received secure information. [After X9.17]

Within a laser, the material that emits coherent radiation or exhibits gain as the result of electronic or molecular transitions to a lower energy state or states, from a higher energy state or states to which it had been previously stimulated.
Note: Examples of active laser media include certain crystals, gases, glasses, liquids, and semiconductors. Synonym laser medium.

1. A satellite carrying a station intended to transmit or retransmit radio communication signals. [NTIA] [RR]
Note: An active satellite may perform signal processing functions such as amplification, regeneration, frequency translation, and link switching, to make the signals suitable for retransmission.
2. An Earth satellite carrying a station intended to transmit or re-transmit radiocommunication signals. [47CFR]

1. A detection device that requires input energy from a source other than that which is being sensed.
Note: An example of an active sensor is a photoconductive cell.
2. In surveillance, a detection device that emits energy capable of being detected by itself.
Note: An example of an active sensor is a measuring instrument that generates a signal, transmits… (Read More →)

A signaling link that has successfully completed the initial alignment procedures and carries (or is ready to carry) signaling traffic. [T1.226-1992]

See star coupler, multiport repeater.