e-keying

electronic keying, used in ATCA and MTCA systems, replacing the mechanical keying as used i.e. with cPCI

E1

1st multiplex level of SDH (Europe), 2.0Mbps

E3

3rd multiplex level of SDH (Europe), 34Mbps

EEPROM

Electronically Erasable Programmable ROM

EFR

Enhanced Full Rate, audio compression format for wireless applications, based on ACELP

eMBB

enhanced mobile broadband

EMMC

Enhanced Module Management Controller

eNodeB

evolved NodeB - equipment that facilitates wireless communication between user equipment (UE) and a 4G mobile network

EVRC-A

Enhanced Variable Rate Codec A, voice codec used in CDMA2000 networks, replacing QCELP.

EVRC-B

Enhanced Variable Rate Codec B, voice codec used in 3GPP2 networks, replacing EVRC-A.