| E1 |
European digital transmissions format; equivalent of North American T1. |
| E911 |
Enhanced 9-1-1 service. Provides the identity and the approximate location of the calling phone |
| EAP |
IETF Extensible Authentication Protocol |
| Eb |
Energy of an information bit |
| EBCDIC |
EBCDIC "Extended Binary Coded Decimal Interchange Code is an 8-bit character encoding used on IBM mainframes |
| EBGP |
External BGP. BGP between routers in two different networks. |
| EC |
Exchange Carrier |
| EDI |
Electronic Data Interchange. Used to transfer business-level data between companies (e.g. invoices, purchase orders). Nowadays, more attention is on XML for this purpose |
| EIA |
Electronics Industry Alliance |
| EMC |
Electro-Magnetic Compatibility |
| EMI |
Electro-Magnetic Interference. Disruption of device operation in vicinity of electromagnetic field (EM field) in radio frequency (RF) spectrum; caused by another electronic device. |
| EoS |
Ethernet over SONET. Standards-based approach of data transmission over Bellcore SONET/SDH. |
| Erlang |
Measure of traffic load. Calculated as rate at which calls arrive divided by the rate at which they are completed |
| Erlang B |
A traffic model used to engineer resource groups when blockage is low, and the average holding time is known |
| Erlang C |
A traffic model commonly used for provisioning data circuits |
| ERP |
Effective Radiated Power |
| ESF |
Extended Superframe Format. DS1 format that is used for most T1 links |
| Ethernet |
Ethernet is a frame-based computer networking technology for local area networks (LANs). It defines wiring and signaling for the physical layer, and frame formats and protocols for the media access control (MAC)/data link layer of the OSI model. Ethernet is mostly standardized as IEEE's 802.3. |
| Ethernet Extender |
Device's) that allow Ethernet to work at distances exceeding the specified 100 meter maximum Typically point-to-point device(s), operating at full-duplex to avoid collision issues. |
| ETSI |
European Telecommunications Standards Institute |
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