Of silica-based optical fibers, the transmission window at approximately
1. 55 m.
Note: The third window is the minimum-loss window in silica-based fibers. [After FAA]

A point (a) that is an extrapolated convergence--not directly measurable--of intermodulation distortion products in the desired output and (b) that indicates how well a receiver performs in the presence of strong nearby signals.
Note: Determination of a third-order intercept point is accomplished by using two test frequencies that fall within the first intermediate frequency mixer passband. Usually, the test frequencies… (Read More →)

A range of one thousand telephone numbers within an NPA-NXX beginning with X000 and ending with X999, where X is a value from 0 to 9.

Thousands-block number pooling is a process by which the 10,000 numbers in a central office code (NXX) are separated into ten sequential blocks of 1,000 numbers each (thousands-blocks), and allocated separately within a rate center (FCC 00-104 §5
2. 20 (a)).

1. In computer conferencing, a set of sequential messages containing closely related information. [After 2382-pt.35] Synonyms discussion thread, followup.
2. A single flow of control within a process [POSIX.0].

1. Capabilities, intentions, and attack methods of adversaries to exploit, or any circumstance or event with the potential to cause harm to, information or an information system. [NIS]
2. Any circumstance or event with the potential to harm an information system (IS) through unauthorized access, destruction, disclosure, modification of data, and/or denial of service. [INFOSEC-99]
3. The likelihood of an… (Read More →)

Examination of information to identify the elements comprising a threat. [INFOSEC-99]

[A] formal description and evaluation of threat to an information system (IS). [INFOSEC-99]

Synonym triplet.

A switching system service feature that permits users to add a third party at a different number during a call, without the assistance of an attendant.