E

• EIA/TIA 568A/568B: The standards for the pinouts of the RJ-45 connectors and twisted-pair cable for commercial and residential installations.
• Encapsulating Security Payload (ESP) transport mode: IPSec ESP mode includes the message actions of the AH mode and the encryption of the payload only.
• Entrance facility: The location where a service provider's network and the subscriber's backbone interconnect.
• Environmental threats: Weather, natural disaster, catastrophic event, and other events from the natural world.
• Error-correction code (ECC) memory: Includes a dedicated memory unit that provides parity and error-correction to the other memory units.
• Extensible Authentication Protocol (EAP): Combines with authentication methods and acts as middleware between the client and an authentication server.
• External bus: Provides a means for peripherals and expansion components...