In integrated services digital networks, (ISDN), a time-ordered set of all block payloads that have labels containing the same information, i.e., containing the same identifiers.

In integrated services digital networks (ISDN), an interface structure that provides telecommunications services and signaling by means of labeled channels.

In integrated services digital networks (ISDN), multiplexing by concatenation of the blocks of the channels that have different identifiers in their labels.

In integrated services digital networks (ISDN), a labeled channel in which the block payloads or the duration of each successive block is random.

Use of sophisticated signal recovery equipment in a laboratory environment to recover information from data storage media. [INFOSEC-99]

Lawfully Authorized Electronic Surveillance

The interval between a Toll-Free Number’s reservation in the 800 Service Management System (SMS/800) and its conversion to Working Status, as well as the period of time between disconnection or cancellation of a Toll-Free Number and the point at which that Toll-Free Number may be reassigned to another Toll-Free Subscriber.

See Lambertian source.

See Lambertian source.

An optical source that obeys Lambert's cosine law, i.e., that has an intensity directly proportional to the cosine of the angle from which it is viewed.
Note: Conventional (surface-emitting) LEDs are approximately Lambertian. They have a large beam divergence. This results in a radiation pattern that resembles a sphere. Thus, most of their total optical output is not coupled into… (Read More →)