E911 EBCMCS E-commerce ECSD E-DCH EDGE EDGE Compact EFR EGPRS E-GSM EIRP ELT EMC EMI EMS Encryption End-to-end security EPG EPIRB ERMES ERP (Effective Radiated Power) ERP (Enterprise Resource Planning) ESN eTEN Ethernet ETSI Eureka 147 EuroDAB
