eHRPD

Enhanced High Rate Packet Data

EPS

Evolved Packet System

IMS

IP Multimedia Subsystem

MO

Mobile Originated

MT

Mobile Terminated

PESQ

Perceptual Evaluation of Speech Quality

POLQA

Perceptual Objective Listening Quality Assessment

PRACK

Provisional ACK

RRC

Radio Resource Control

RTP

Real-Time Transport Protocol

SIP

Session Initiation Protocol

ViLTE

Video over LTE

VoLTE

Voice over LTE