E&M Ear and Mouth (a signaling method)
E-Mail Electronic Mail
E-TDMA Expanded Time Division Multiple Access
EB Exabyte (1,000,000,000,000,000,000 bytes)
EBCDIC Extended Binary Code Decimal Interchange Code (IBM Corp.)
ECMA European Computer Manufacturers Association
ECSA Exchange Carriers Standards Association
ED Ending Delimiter
EDFA Erbium-Doped Fiber Amplifier
EDI Electronic Data Interchange
EDIFACT Electronic Data Interchange For Administration and Transport
EDRO Enhanced Diversity Routing Option (AT&T)
EEROM Electronically Erasable Read-Only Memory
EFF Electronic Frontier Foundation
EFRC Enhanced Full Rate Codec
EFS Encrypting File System (Microsoft Corp.)
EFT Electronic Funds Transfer
EGP External Gateway Protocol
EHF Extremely High Frequency (more than 30 GHz)
EIA Electronic Industries Association
EIR Equipment Identity Register
EISA Extended Industry Standard Architecture
EMI Electromechanical Inteference
EMS Element Management System
EOC Embedded Overhead Channel
EOT End of Transmission
EP Extension Point
ERP Enterprise Resource Planning
ESCON Enterprise System Connection (IBM Corp.)
ESD Electronic Software Distribution
ESF Extended Super Frame
ESMA Enterprise Storage Management Architecture (Legato Systems)
ESMR Enhanced Specialized Mobile Radio
ESMTP Extended Simple Mail Transfer Protocol
ESN Electronic Serial Number
ETC Exempt Telecommunication Companies
ETSI European Telecommunication Standards Institute
EVRC Enhanced Variable Rate Encoder
