AGPS Assisted Global Positioning System
AMPS Advanced Mobile Phone System
ANI Automatic Number Identification
API Application Programming Interface
ARPU Average Revenue Per User
BaaS Backend as a Service
BREW Binary Runtime Environment for Wireless
BSC Base Station Controller
BLE Bluetooth Low Energy or Bluetooth Smart
BTA Basic Trading Area
BTS Base Transceiver System
CDMA Code Division Multiple Access
CDPD Cellular Digital Packet Data
CLEC Competitive Local Exchange Carrier
CPE Customer Premises Equipment
CSS Cascading Style Sheet
DOM Document Object Model
DSP Digital Signal Processor
DVB-H Digital Video Broadcast – Handheld
EDGE Enhanced Data for GSM Evolution
ESMR Enhanced or Extended Specialized Mobile Radio
EV-DO Evolution Data Only
FDD Frequency Division Duplex
GMSC Gateway Mobile Switching Center
GPRS General Packet Radio Service
GPS Global Positioning System
GSM Global Systems for Mobile Communications (originally Groupe Special Mobile (French))
HLR Home Location Register
HSDPA High Speed Downlink Packet Access
HSUPA High Speed Uplink Packet Access
HTML HyperText Markup Language
IaaS Infrastructure as a Service
iDEN Integrated Digital Enhanced Network (Motorola TDMA)
ILEC Independent Local Exchange Carrier
IMS IP Multimedia Subsystem
IoT Internet of Things
IP Internet Protocol
J2ME Java 2 Platform, Micro Edition (old)
Java ME Java Platform, Micro Edition (new)
LAN Local Area Network
LEC Local Exchange Carrier
LoRa Long-range (Radio)
LoRaWAN Long-range (Radio) WAN
LTE Long Term Evolution
M2M Machine-to-machine (Communication)
MIMO Multiple Input, Multiple Output
MMDS Multichannel Multipoint Distribution Service
MMS Multimedia Messaging Service
MOU Minutes of Use
MSC Mobile Switching Center
MT Mobile Terminated (e.g. SMS)
MO Mobile Originated (e.g. SMS)
MVNO Mobile Virtual Network Operator
NFC Near Field Communication
OS Operating System
OTA Over The Air
PaaS Platform as a Service
P2P Peer-To-Peer
PCS Personal Communications System
PHS Personal Handyphone System
POTS Plain Old Telephone Service
PSAP Public Safety Answering Point
PSTN Public Switched Telephone Network (= POTS)
PTT Push To Talk
QR Quick Response (Code)
RBOC Regional Bell Operating Company
RF Radio Frequency
RFID Radio Frequency Identification
RNC Radio Network Controller
RTT Round-trip Time
SaaS Software as a Service
SIM Subscriber Identity Module
SIP Session Initiation Protocol
SMR Specialized Mobile Radio
SMS Short Message Service
SVG Scalable Vector Graphics
TDD Time Division Duplex
TDMA Time Division Multiple Access
TD-SCDMA Time Division Synchronous Code Division Multiple Access (phew!)
UMA Unlicensed Mobile Access
UMTS Universal Mobile Telecommunications System
UWB Ultra Wideband
VoIM Voice over Instant Messaging = VoIP
VoIP Voice over Internet Protocol
WAN Wide Area Network
WAP Wireless Application Protocol
W-CDMA Wideband Code Division Multiple Access
WICD Web Integration Compound Document
Wi-Fi Wireless Fidelity (IEEE 802.11b WLAN)
WiMAX (or WirelessMAN) Wireless Metropolitan Area Network (IEEE 802.16)
WLAN Wireless Local Area Network (typically IEEE 802.11)
WLL Wireless Local Loop
VLR Visitor Location Register
WML Wireless Markup Language
VoIP Voice over IP
XHTML Extended HyperText Markup Language