E - Definitions

  • E

    E-carrier system

    To see the relationship between the E-carrier system, the T-carrier system, and DS0 multiples, see digital signal X. E1 (or E- is a European digital transmission format devised by the ITU-TS and given the name by the Conference of European Postal and Telecommunication Administration (CEPT).

  • E-ZPass

    E-ZPass is a toll collection system in the northeastern U.S. that uses RFID technology to allow a driver to pass through a tollbooth and pay the toll without stopping the vehicle.

  • E.164

    E.164 is an international numbering plan for public telephone systems in which each assigned number contains a country code (CC), a national destination code (NDC), and a subscriber number (SN).

  • east-west traffic

    East-west traffic, in a networking context, is the transfer of data packets from server to server within a data center. The label east-west comes from network diagram drawings that usually depict local area network (LAN) traffic horizontally.

  • ECC (error correction code or error checking and correcting)

    ECC (either "error correction [or correcting] code" or "error checking and correcting") allows data that is being read or transmitted to be checked for errors and, when necessary, corrected on the fly.

  • edge device

    An edge device is any piece of hardware that controls data flow at the boundary between two networks.

  • edge router

    An edge router is a specialized router located at a network boundary that enables a campus network to connect to external networks.

  • egress

    Egress (pronounced EE-grehs, from Latin egressus, or going out) is the act of going out of something.

  • egress filtering

    Egress filtering is a process in which outbound data is monitored or restricted, usually by means of a firewall that blocks packets that fail to meet certain security requirements.

  • EIGRP (Enhanced Interior Gateway Routing Protocol)

    EIGRP (Enhanced Interior Gateway Routing Protocol) is a network protocol that lets routers exchange information more efficiently than with earlier network protocols.

  • electronic program guide (EPG)

    An electronic program guide (EPG) is an application used with digital set-top boxes and newer television sets to list current and scheduled programs that are or will be available on each channel and a short summary or commentary for each program.

  • ELF (extremely low frequency)

    ELF (extremely low frequency) refers to an electromagnetic field having a frequency much lower than the frequencies of signals typically used in communications.

  • email response management service (ERMS)

    An email response management service (ERMS) is a set of programs that automatically handles email messages and attachments according to user-defined rules... (Continued)

  • Embrane

    Embrane is a company that makes software products for the delivery of SDN (sofware-defined networking) services, including load balancers, firewalls and VPNs.

  • encapsulation

    In general, encapsulation is the inclusion of one thing within another thing so that the included thing is not apparent.

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