Corporate Careers Partners Suppliers EN Products Solutions Support Services How to buy Resources Contact Home Resources Glossary Glossary Technology evolves at a rapid-fire pace. That’s why we’ve built an easy-to-use glossary to help you better understand the terms, technologies and trends that impact your business. Search Show only animated A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9 E_Port E1 EB EBS E-business or e-commerce EC ECC Echo Cancellation ECN ECT EDFA EDGE EE_Credit EE_Credit_CNT EFM EFMA EFS eHEC EIA EIR E-LAN Electromagnetic Spectrum Electronic Industry Association (EIA) Element Management System (EMS) E-Line EMS End-to-end Network End-to-End Service Modeling ENIU EOF EOW EPC EPG EPL EPLan EPON ER Erbium-Doped Fiber Amplifier Error Vector Magnitude (EVM) ES ESCON ESR Ethernet Ethernet in the First Mile (EFM) Ethernet Service OAM (SOAM) Ethernet Version 2 Ethernet Virtual Private Line (EVPL) ETSI European Telecommunications Standards Institute (ETSI) EVC EVDO EVM EVPL EVPLan Excessive Collision Error EXI EXP Explicit Congestion Notification (ECN) Extranet Contact Webinars Blog About Corporate Contact Discover Products Solutions How to buy Learn Resources Webinars Blog Glossary Follow LinkedIn Facebook Twitter YouTube WeChat Subscribe to our newsletter Keep up to date with the latest EXFO news. © 2017 - 2021 EXFO Inc. All Rights Reserved. User privacy notice Cookie policy