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OBU On Board Unit
OEM Original Equipment Manufacturing
OLN Optical Line Terminal
OLT Optical Line Termination
ONUs Optical Network Units
OSI Open Systems Interconnection
PAN Personal Area Network
PC‐LAN Personal Computer Local Area Network
PHY Robust radio
PM2.5 Particulate matter air pollution
PON Passive optical network
POTS Plain Old Telephone Service
PSTN Public Switch Telephone Network
PtP Point to point
PUE Power Usage Effectiveness
QoL Quality of Life
QoS Quality of service
QR Quick Response
RF Radio Frequency
RF‐ICs Radio Frequency‐Integrated Circuits
RFID Radio Frequency Identification Devices
RNC Radio Network Controller
ROADM Remote Optical Add‐Drop Multiplexing
ROI Return on investment
RSP Retail service provider
RSSI Receive Signal Strength Indicator
RSU Road side unit
SaaS Software as a Service
SAP Service Access Protocol
SCADA Supervisory Control and Data Management
SDDC Software‐Defined Data Center
SDH Synchronous Data Hierarchy
SGTF Smart grid task force
SMARTIE Secure and Smarter Cities Data Management
ITU‐T's Technical Reports and Specifications 333
