Acronyms and Terms

Following is a list of common terms and acronyms related to our project that may be new to you.

If catch us using an acronym you don't recognize or you have one to add to this list, please contact us at


Term  Description 
2G Second Generation
3G Third Generation 
3GPP Third Generation Partnership Program
4G Fourth Generation 
AMPS Advanced Mobile Phone System 
APCO Association of Public Safety Communications Officials International 
APN Access Point Name 
AVL Automatic Vehicle Location 
BB Broadband 
BBWG Broadband Working Group 
BTOP Broadband Technologies Opportunities Program 
CAD Computer Aided Dispatch 
CAI Common Air Interface 
CAPEX Capital Expense 
CDPD Cellular Digital Packet Data 
CDMA Code Division Multiple Access 
CDMA2000 Code Division Multiple Access (3G)
CIO Chief Information Officer 
COML Communications Unit Leader 
dB Decibel 
DAS State of Ohio, Department of Administrative Services 
DAS Distributed Antenna System 
DHS US Department of Homeland Security 
EDGE Enhance Data for GSM Evolution (2G) 
EM Emergency Manager 
EMS Emergency Medical Service
eNodeB Evolved Node B (LTE)
EPC Evolved Packet Core (EPC)
ERIC Emergency Response Interoperability Center 
ESF Emergency Support Function 
E-UTRAN Evolved UMTS Terrestrial Radio Access Network 
FFO Federal Funding Opportunity 
FirstNet First Responder Network Authority 
FNN FirstNet Nationwide Network 
FY Fiscal Year 
GIS Geographic Information System 
GPRS General Packet Radio Service 
GPS Global Positioning System 
GSM Global System for Mobile Communications 
HSS Home Subscriber Service 
ID Identification 
IMS IP Multimedia Subsystem 
IMSI International Mobile Subscriber Identity 
IP Internet Protocol 
IPv4 Internet Protocol Version 4 
IPv6 Internet Protocol Version 6 
IPTV Internet Protocol Television 
IT Information Technology 
kbps Kilobits per second
LMR Land Mobile Radio 
LTE Long-Term Evolution 
M2M Machine-to-Machine 
MARCS Multi-Agency Radio Communications (Trunking) System 
MAC Media Access Controller 
MCC Mobile Country Code 
MDT Mobile Data Terminal
MEID Mobile Equipment Identifier 
Mhz Megahertz 
MIMO Multiple Input Multiple Output 
MME Mobile Management Entity 
MNC Mobile Network Code 
MOCN Multi-Operator Core Network 
MOU Memorandum of Understanding 
MPLS Multi-Protocol Label Switch 
MSIN Mobile Subscriber Identity Number 
NG911 Next-Generation 911 
NPSBN Nationwide Public Safety Broadband Network 
NPSTC National Public Safety Telecommunications Council 
NTIA National Telecommunications and Information Administration 
OFIP Ohio-FirstNet Implementation Project 
P25 Project-25 
PCRF Policy and Charging Rules Function 
PDN Packet Data Network 
PGW Packet Data Gateway 
PLMN Public Land Mobile Network 
POC Point of Contact 
PSAP Public Safety Answering Point 
PSBN Public Safety Broadband Network 
PSEN Public Safety Enterprise Network 
PTT Push-to-Talk 
QoS  Quality of Service 
RAN Radio Access Network 
RF Radio Frequency 
RFI Request for Information 
RFP Request for Proposal 
RMS Record Management System 
SCIP Statewide Communications Interoperability Plan 
SGW Serving Gateway 
SIEC Statewide Interoperability Executive Committee 
SIM Subscriber Identity Module 
SLIGP State and Local Implementation Grant Program 
SME Subject Matter Expert 
SMS Short Message Service 
SOP Standard Operating Procedure 
SOR Statement of Requirements 
SWIC Statewide Interoperability Coordinator 
T1 T-Carrier 1 
TDMA Time Division Multiple Access 
UE  User Equipment 
UICC Universal Integrated Circuit Card 
UMTS Universal Mobile Telecommunications System 
VoIP Voice over IP (Internet Protocol) 
VoLTE Voice over LTE (Long-Term Evolution) 
VPN Virtual Private Network 
W Watt 
XML  eXtensible Markup Language