149 E&M Ear and Mouth E-COM Electronic Computer Originated Mail E911 Enhanced 911 EA Electronic Arts EAAT Equal Access Alternative Technologies EADAS Engineering and Administrative Acquisition System EADAS Engineering and Administrative Data Acquisition System EADAS/NM EADAS/Network Management EAEO Equal Access End Office EAP Employee Assistance Program EAR Export Administration Regulations EARN European Academic Research Network EAROM Electrically Alterable Read Only Memory EAS Extended Announcement System EASD Equal Access Service Data EBCDIC Extended Binary Coded Decimal Interexchange Code EBDI Electronic Business Data Interchange EC Exchange Carriers ECAD Engineering Computer Aided Design ECAP Electronic Customes Access Program ECC East Coast Crackers ECC Enter Cable Change ECC Error Correction Code ECCS Economic C (Hundred) Call Seconds ECF Enhanced Connectivity Facility ECFA Electronic Communications Forwarding Act ECHO Elite Crackers/Hackers Orginization ECL Error Code Logging ECO Engineering Change Order ECPT Electronic Coin Public Telephone ECR Electronic Rats ECS Electronic Crossconnect System EDAC Electromechanical Digital Adaptor Circuit EDC Engineering Data Center EDC Error Detection Code EDC Error Detection and Correction EDI Electronic Data Interchange EDI Electronic Document Interchange or Electronic Data Interchange EDP Electronic Data Processing EDP Electronic Data Processing EDRS Engineering Data Resources Services EDSX Electronic Digital Signal Cross-Connect EDU Education Computer Systems EDWG ESnet DECnet Working Group EE End to End Signaling EEC Electronic Equipment EECT End-to-End Call Trace EEDP Expanded Electronic Dialing Plan EEE Electronic Equipment Enclosures EEHO Either End Hop Off EEI Equipment-to-Equipment Interface EFF Electronic Frontier Foundation EFRAP Electronic Feeder Route Analysis Program EFT Electronic Fund Transfer EFTS Electronic Funds Transfer System EGA Enhanced Graphics Adapter EI Ending Inventory EIA Electronics Industries Association EIES Electronic Information Exchange System EIS Enterprise Integration Services EIS Expanded Inband Signaling EISA Enhanced Industry Standard Architecture EISS Economic Impact Study System EIU Extended Interface Unit EJS Elite Justice Society EKTS Electronic Key Telephone Service EKTS Electronic Key Telephone Sets EL Electroluminescent ELD Electroluminescent Displays ELDS Exchange Line Data Service ELF Employee Locater Facility EMA Electronic Mail Association EMA Enterprise Management Architecture EMACS Editing Macros EMC ElectroMagnetic Capability EMC Elite Mafia against Copyright EMI Electromagnetic Interference EML Expected Measured Loss EMS Expanded Memory Specification ENET Ethernet ENFIA Exchange Network Facility for Interstate Access ENG Engineering ENQ Enquire EO End Office EOE Electronic Order Exchange EOF End Of File EOL End Of Life EOS Extended Operating System EOTT End Office Toll Trunking EOTT End of Toll Trunking EPA Elite Programming Association EPAH Ethical Phreakers and Hackers EPG External Products Group EPIC Excellence Produced in Creativity EPL Electronic Program Language EPLS Engineering Price List System EPP Executive Partner Program EPROM Erasable Programmable Read Only Memory EPSCS Enhanced Private Switched Communications Service ER Error Register ERAR Error Return Address register EREP Environmental Recording Editing and Printing ERF Emergency Restoration Facility ERL Echo Return Loss ERP Effective Radiated Power ERU Error Return Update ES ElektroShok ESA European Space Agency ESAC Electronic Surveillance Assistance Center ESB Emergency Service Bureau (911) ESB Entry Systems Business ESD Electronic Systems Development ESDI Enhanced Small Device Interface ESDP Educational Services Development and Publishing ESF Extended SuperFrame ESF Extended SuperFrame Format ESG Engineering Systems Group ESL Emergency Stand-Alone ESLF Eastern Seaboard Liberation Front ESN Electronic Serial Number ESN Electronic Switched Network ESO Engineering Support Operations ESOC European Space Operations Center ESP Ecstatic Sound Productions ESP Enhanced Serial Port ESP Enhanced Service Providers ESRIN European Space Research Institute ESS Electronic Switching System ESSX Electronic Switching System Exchange ESVN Executive Secure Voice Network ESW Every Strange Warez ET&Q Engineering, Technology and Quality ETA Express Traders Alliance ETAS Emergency Technical Assistance ETD Entombed ETE Eternity ETF Electronic Toll Fraud ETN Electronic Tandem Network ETS Electronic Tandem Switching ETS Electronic Translation System ETSACI Electronic Tandem Switching Administration Channel Interface ETSSP Electronic Tandem Switching Status Panel EU End User EUPOT End User-Point of Termination EUSR End User EVGA Expanded Video Graphics Array EVIL Exotic Visions In Liquid EWR Elite Warez Review EXCOM Executive Committee