| |
|
E |
| E1 |
 |
Communications circuit provided by long-distance carriers
for voice and data transmission (2.054 Mbps in Europe
or 1.544 Mbps in U.S.); may be divided in 24 separate
64 Kb channels; T-1 in US. |
| E |
|
3
European designation for T-3 |
| EBCDIC |
|
Extended Binary Coded Decimal Interchange Code, an
9-bit data-exchange code used in IBM mainframes, other
computer systems, and associated communications equipment.
EBCDIC and ASCII are the two most widely used data
codes. |
| EC |
|
Echo Control/Cancellation |
| ECMA |
|
European Computer Manufacturers Association |
| EDGE |
|
Enhanced Data rates for GSM Evolution |
| EDI |
|
Electronic Data Interchange, method for passing orders,
invoices and other transactions electronically between
locations or organizations. |
| EDL |
|
Ethernet Data Link |
| EEPROM |
|
Electronically Erasable Programmable Read-Only Memory |
| EFA |
|
Envelope
Function Address |
| EIA |
|
Electronic
Industries Association |
| EGP |
|
Exterior Gateway Protocol, (TCP/IP) The service by
which gateways exchange information about what systems
they can reach; generally, an exterior gateway protocol
is any internetworking protocol for passing routing
information between autonomous systems. |
| EISA |
|
Extended Industry Standard Architecture, PC bus systems
that is an alternative to IBM's Micro Channel Architecture
(MCA). The EISA architecture, backed by an industry
consortium headed by Compaq, is compatible with the
IBM AT bus; MCA is not. |
| EMC |
|
Electro Magnetic Current |
| EML |
|
Element Management Layer |
| EMS |
|
Element Management System |
| Encapsulation |
|
Wrapping a data set in a protocol header. For example,
Ethernet data is wrapped in a specific Ethernet header
before network transit. Also, a method of bridging
dissimilar networks where the entire frame from one
network is simply enclosed in the header used by the
link-layer protocol of the other network. |
| Encryptio |
|
n Applying a specific algorithm to data so
as to alter the data's appearance and prevent other devices
from reading the information. Decryption applies the
algorithm in reverse to restore the data to its original
form. |
| |
|
|
| End
node |
|
A
node such as a PC that can only send and receive information
for its own use. It cannot route and forward
information to another node.
EtherTalk Apple Computer's protocol for Ethernet transmissions |
| End
system |
|
End-user
device on a network. Also, a nonrouting host or node
in an OSI network. |
| Enterprise
network |
|
Larger
network connecting most major points in a company.
Differs from a WAN in that it is typically
private and contained within a single organization. |
| Entity |
|
Individual, manageable device in a network. Also, OSI
terminology for a layer protocol machine. An entity
within a layer performs the functions of the layer
within a single computer system, accessing the layer
entity below and providing services to the layer entity
above at local service access points. |
| EPROM |
|
Erasable Programmable Read-Only Memory |
| EPS |
|
Equipment
Protection Switching |
| ES-ES |
|
End
System to End System Protocol |
| ESF |
|
Extended Super Frame. |
| ESP |
|
Established
Service Provider |
| ES-IS |
|
End system to intermediate system protocol, the OSI
protocol by which end systems such as networks personal
computers announce themselves to intermediate systems
such as hubs. |
| Ethernet |
|
IEEE-standard data link protocol that specifies how
data is placed on and aretrieved from a common transmission
medium. Forms the underlying transport vehicle used
by several upper-level protocols, including TCP/IP
and XNS. See CSMA/CD for a description of Ethernet's
media-access method. Contrast TR (token ring). |
| EtherTalk |
|
Apple Computer's protocol for Ethernet transmissions |
| |
|
|
