| Term |
Description |
| EAP |
EAP (Extensible Authentication Protocol) is a point-to-point protocol extension used under the 802.1x framework that provides support for additional authentication methods within PPP.
See also: LEAP, EAP-FAST |
|
| EAP-FAST |
EAP-FAST (Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling). It is a follow-on authentication technology to LEAP introduced by Cisco to provide protection against dictionary attacks.
See also: EAP, LEAP |
|
| egress |
| A measure of the degree to which signals from a nominally closed coaxial cable system are transmitted through the air. Also known as Signal Leakage. The FCC requires that egress be monitored and controlled by CATV system operators. |
|
| EIA |
| Electronic Industries Association. A trade organization in Washington representing manufacturers of electronic equipment in the United States. |
|
| EIRP |
| EIRP (effective isotropically radiated power) - the arithmetic product of (a) the power supplied to an antenna and (b) its gain. |
|
| EMI |
| EMI (Electromagnetic Induction/Interference) is a term used to describe disturbances to electrical signals that can arise from a wide range of sources. EMI can affect all types of copper communications cables. Optical fiber is completely immune to EMI. |
|
| encapsulation |
| The process of putting data inside a larger "package" (or packet, transmission unit) that includes a header and possibly an end-of-packet identifier. The encapsulation may be thought of as putting a letter in an envelope for transport to another location. |
|
| encryption |
| The process of rendering a digital signal unintelligible to any receiver that doesn’t have some unique piece of information needed to recover that signal. |
|
| ESSID |
ESSID (Extended Service Set Identifier) is a unique identifier which is attached to the header of packets sent over a WLAN. The ESSID differentiates one WLAN from another, so all access points and all devices attempting to connect to a specific WLAN must use the same ESSID. A device will not be permitted to join the network group unless it can provide the same unique ESSID. An ESSID is also referred to as a Network Name because essentially it is a name that identifies a wireless network. The ESSID is a 32-character maximum string and is case-sensitive.
See aslso: SSID |
|
| Ethernet |
Ethernet is an IEEE data communications protocol originally developed for premises and local access networks (IEEE 802.3). It was originally developed for peer-to-peer communications using shared media over relatively short distances. Ethernet has been substantially improved over the years and now operates in a wide variety of settings. Ethernet is currently the most widely deployed LAN protocol in the world.
Some of the newer variants of the standard include;
Fast Ethernet - Ethernet at 100 Megabits per second.
Gigabit Ethernet (Gig-E) - Ethernet at 1000 Megabits per second. |
|
| ETSI |
European Telecommunications Standards Institute (ETSI) is an independent, non-profit organization that produces telecommunications standards.
ETSI is officially responsible for standardization of Information and Communication Technologies (ICT) within Europe. These technologies include telecommunications, broadcasting and related areas.
ETSI Website |
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| Term |
Description |
Glossary