1XRTT - Single carrier (1x) Radio Transmission Technology
3G - Third generation wireless
AASHTO - American Association of State Highway Transportation Officials
ACSB - Amplitude Compandered Single Sideband
AGILE - Advanced Generation of Interoperability for Law Enforcement
AM - Amplitude Modulation
AMPS - Advanced Mobile Phone System
ANSI - American National Standards Industry
APCO - Association of Public-Safety Communications Officials, International
ATIS - Alliance for Telecommunications Industry Solutions
AuC - Authentication Center
ATIS - Alliance for Telecommunications Industry Solutions
AuC - Authentication Center
AVL - Automatic Vehicle Location
BJA - Bureau of Justice Assistance
BJS - Bureau of Justice Statistics
CAD - Computer-aided Dispatch
CAD - Computer-aided Dispatch
CALEA - Commission on Accreditation for Law Enforcement Agencies
CALEA - Communications Assistance for Law Enforcement Act
CAPRAD - Computer Assisted Pre-coordination Resource and Database
CCITT - International Telegraph and Telephone Consultative Committee
CDMA - Code Division Multiple Access
CDPD - Cellular Digital Packet Data
CFR - Code of Federal Regulations
COPS - Community Oriented Policing Services
COTS - Commercial Off-the-Shelf Software
CPG - Converged Packet Gateway
CRADA - Cooperative Research and Development Agreement (from the NTIA's Public Safety Research Center)
CTCSS - Continuous Tone-Coded Squelch System
CDCSS - Continuous Digital-Coded Squelch System
DAWS - Digital Advanced Wireless Services
dB - Decibel
DoC - Department of Commerce
DoD - Department of Defense
DOJ - Department of Justice
DOT - Department of Transportation
DSP - Digital Signal Processing
EHF - Extremely High Frequency
EIR - Equipment Identity Register
EIR - Equipment Identity Register
EIS - Environmental Impact Statement
EMS - Emergency Medical Service
EPC - Evolved Packet Core
EPC - Evolved Packet Core
ERP - Effective Radiated Power
ESA - Endangered Species Act
ESMR - Enhanced Specialized Mobile Radio
ETSI - European Telecommunications Standards Institute
FAA - Federal Aviation Administration
FBI - Federal Bureau of Investigation
FCC - Federal Communications Commission
FCCA - Forestry Conservation Communication Association
FDMA - Frequency Division Multiple Access
FEMA - Federal Emergency Management Agency
FLEWUG - Federal Law Enforcement Wireless Users Group
FM - Frequency Modulation
FSK - Frequency Shift Keying
GEO - Geosynchronous Earth Orbit
GHz - Gigahertz (1 billion cycles per second)
GITSB - Government Information Technology Services Board
GPRS - General Packet Radio Service
GPS - Global Positioning System
GSA - General Services Administration
GSM - Global System for Mobile Communications
HALE - High Altitude Long Endurance
HAP - High Altitude Platform
HF - High Frequency
HLR - Home Location Register
HSS - Home Subscriber Server
HLR - Home Location Register
HSS - Home Subscriber Server
Hz - Hertz (cycles per second)
IACP - International Association of Chiefs of Police
IAFC - International Association of Fire Chiefs
ICS - Incident Command System
IEEE - Institute of Electrical and Electronic Engineers
IGA - Intergovernmental Agreement
IM - Intermodulation
IMSA - International Municipal Signal Association
ISP - Internet Service Provider
JPA - Joint Powers Authority
KHz - Kilohertz (1,000 cycles per second)
LAN - Local Area Network
LCRA - Lower Colorado River Authority
LEAA - Law Enforcement Assistance Administration
LEO - Low Earth Orbit, also Law Enforcement Online
LLEBG - Local Law Enforcement Block Grants
LOS - Line of Sight
MBTA - Migratory Bird Treaty Act
MEO - Medium Earth Orbit
MESA - Mobile Broadband for Emergency and Safety Applications
MHz - Megahertz (1 million cycles per second)
MIU - Mobile Imaging Unit
MME - Mobile Management Entity
MSC - Mobile Switching Center
MME - Mobile Management Entity
MSC - Mobile Switching Center
MTSO - Mobile Telephone Switching Office
NAMPS - Narrowband Advanced Mobile Phone System
NASTD - National Association of State Telecommunications Directors
NATO - North Atlantic Treaty Organization
NCC - National Coordination Committee
NENA - National Emergency Number Association
NCIC - National Crime Information Center
NCJRS - National Criminal Justice Reference Service
NCS - National Communications Systems
NEPA - National Environmental Policy Act
NENA - National Emergency Number Association
NHPA - National Historic Preservation Act
NIC - Network Interface Card
NIJ - National Institute of Justice
NIST - National Institute of Standards and Technology
NLECTC - National Law Enforcement and Corrections Technology Center
NPSPAC - National Public Safety Planning Advisory Committee
NPSTC - National Public Safety Telecommunications Council
NSS - Network Switching Subsystem
NSS - Network Switching Subsystem
NTIA - National Telecommunications and Information Administration
OET - Office of Engineering and Technology
OJJDP - Office of Juvenile Justice and Delinquency Prevention
OJP - Office of Justice Programs
OLES - Office of Law Enforcement Standards
OSS-RC - Operations Support System-Radio and Core
OSS-RC - Operations Support System-Radio and Core
OST - Office of Science and Technology
OTAR - Over-The-Air-Rekeying
PAN - Personal Area Network
PBX - Private Branch Exchange
PCMCIA - Personal Computer Memory Card International Association
PCRF - Policy and Charging Rules Function
PCRF - Policy and Charging Rules Function
PCS - Personal Communications System
PDA - Personal Digital Assistant
PGW - Packet Data Network Gateway
PGW - Packet Data Network Gateway
PLMRS - Private Land Mobile Radio Service
POCSAG - Post Office Code Standardization Advisory Group
PSAP - Public Safety Access Point (such as 911 Call Center or dispatch)
PSCC - Public Safety Coordinating Council
PSPP - Public Safety Partnership Project
PSTN - Public Switched Telephone Network
PSWAC - Public Safety Wireless Advisory Committee
PSWN - Public Safety Wireless Network
RAN - Radio Access Network
RF - Radio Frequency
RFI - Request for Information
RFP - Request for Proposals
RFQ - Request for Quotation
RPC - Regional Planning Committee
SDMA - Space Division Multiple Access
SDR - Software Defined Radio
SGW - Serving Gateway
SGW - Serving Gateway
SHF - Super High Frequency
SIEC - State Interoperability Executive Committee
SIS - State Identification Systems
SMR - Specialized Mobile Radio
SMS - Short Messaging System
TCP/IP - Transmission Control Protocol/Internet Protocol
TDMA - Time Division Multiple Access
TETRA - TErrestrial TRunked Radio
TIA - Telecommunications Industry Association
TIIAP - Telecommunications and Information Infrastructure Assistance Program
TOP - Technology Opportunities Program (formerly TIIAP)
UART - Universal Receiver/Transmitter
UE - User Equipment
UE - User Equipment
UHF - Ultra High Frequency
ULS - Universal Licensing System
UWB - Ultra Wide Band
VHF - Very High Frequency
VLR - Visitor Location Register
VLR - Visitor Location Register
VoIP - Voice Over Internet Protocol
WAN - Wide Area Network
WAP - Wireless Access Point
WLAN - Wireless Local Area Network
WRC - World Radio Conference
WSCA - Western States Contracting Alliance
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