Evolutionary Stable Strategy, a system that resists disturbance, a stable balance between the various interacting agents in an ecosystem.

Evolutionarily stable strategy. A strategy which, if adopted by most of a population, cannot be bettered by any other strategy, and will therefore tend to become established by natural selection.

Eurest Support Services

Stands for Extended Service Set. More than one BSS can be configured as an Extended Service Set. An ESS is basically a roaming domain.

Education Support Services.

Extended Service Set. A set of one or more interconnected Basic Service Sets which appear as a single seamless network.

An acronym for Extended Service Set, this is a roaming domain. More than one BSS can be configured as an Extended Service Set.

Ethnic Specific Services

A designation for the switching equipment in Bell System central offices. In the independent telephone company industry, the abbreviation is EAX.

Excise System Specification

Electronic Suspension System; air spring suspension that adapts spring and damping characteristics and body level and height to vehicle driving and load conditions

Embedded Simulation System

executive support system. an executive information system with additional capabilities, including data analysis, decision support, electronic mail, and personal productivity tools

Electronics Switching System. Programmable, software-driven computing used to control the switching of calls, billing information and handling other related network functions. Replaced earlier generation of electromechanical switching equipment which was hardware-based.

Electronic Switching System, "class five" switch or 5ESS is the most common CO in the US.

Electronic switching system. A type of analog central office telephone switching system.

ELECTRONIC SWITCHING SYSTEM. A computer-controlled voice and/or data switch.

Electronic Spark Selection (Cadillac)

(Electronic Switching System): A central office with programmable telephone switching logic.

electronic switching system. Electronic versus electromechanical switching equipment.

(Electronic Switching System) - Common switching system used in most modern central offices (CO's). Usually refers to the AT&T #5 ESS, although also used in a generic manner.

Electronic Switching System. An electronic telephone switching system equipped with stored program control that provides features not present in electromechanical switches.

Electronic Switching System. One of AT&T/Lucent's family of stored, program-controlled (SPC) central office switches, including the 4ESS and 5ESS switches.

A system that uses computer-like operations to switch telephone calls.

Electronic Security Systems. That part of physical security concerned with the safeguarding of personnel and property by use of electronic systems. These systems include, but are not limited to, intrusion detection systems (IDS), automated entry control systems (AECS), and video assessment systems. See Biometric Readers, Controlled Perimeter, Perimeter Defenses.

A telephone system that uses TIME-DIVISION MULTIPLEXING (see also) to transmit digitized analog systems. Analog phone signals are digitized and assigned to time slots to carry multiple conversations over one transmission line. At the receiving end, the signals are broken out of their time slots, reconstructed and converted back to analog to be carried over conventional wires to their destinations.

Environmental Stress Screening. A combination of stresses designed to stimulate a product so that latent defects become patent. Performed on 100% of the products.

Environmental and Social Studies

Environmental Stress Screening. Manufacturing stage in which all assemblies are subjected to thermal stresses, with the aim of forcing all early failures to occur. Also known as reliability testing.

Environmental stress screening. A process which applies specific kinds of environmental stresses to products on an accelerated basis, but within their design parameters and limits to precipitate latent and intermittent flaws to detectable failures.

An acronym for Environmental Stress Screening. ESS is a process of subjecting products to rapid thermal changes. The stresses from this process will help find infant mortality in the product. Finding these failures before the product reaches the customer yields better quality, lower warranty expenses, and happier customers.

Environmental Stress Screening. A process by which components or assemblies are tested at the extremes of their normal operating conditions, usually in terms of temperature and voltage limits, for a period of hours or days in order to detect early life defects. It is not meant to be a destructive test.

see Environmental stress screening

Electric Service Station. A substation designation used by ComEd for the distribution system. An ESS provides electric service to one customer.