Codan Radio P25 Training Guide - Manual (Page 10)

TRAINING GUIDE | P25 RADIO SYSTEMS
Chapter 1: Introduction To P25 Page 2
P25 LMR equipment is authorized or licensed in the U.S., Canada and Australia.
in the U.S. under the National Telecommunications and Information Administration (NTIA) or Federal
Communications Commission (FCC) rules and regulations.
in Canada under Industry Canada (IC) rules and regulations.
in Australia under the Australian Communications and Media Authority (ACMA) rules and regulations.
Although developed primarily for North American public safety services, P25 technology and products
are not limited to public safety alone and have also been selected and deployed in other private system
applications, worldwide. The Project 25 users’ process is governed by an eleven-member steering
committee made up of nine U.S. federal, state and local government representatives and two co-
directors. Project 25 has four main objectives:
• ensure competition in system life cycle procurements through Open Systems Architecture
• allow effective, effi cient and reliable intra-agency and inter-agency communications
• provide enhanced functionality and capabilities with a focus on public safety needs
• improve radio spectrum effi ciency
TIA (Telecommunications Industry Association) is a national trade organization of manufacturers
and suppliers of telecommunications equipment and services. It has substantial experience in the
technical aspects of radio communications and in the formulation of standards with reference thereto.
TIA is accredited by the American National Standards Institute (ANSI
® ) as a Standards Developing
Organization.
P25 PHASES
P25 compliant technology was deployed in two phases.
Phase 1
Phase 1 FDMA radio systems operate in 12.5 KHz analog, digital or mixed mode. Phase 1 radios
use Continuous 4 level FM (C4FM) non-linear modulation for digital transmissions. Phase 1 P25
compliant systems are backward compatible and interoperable with legacy systems, across system
boundaries, and regardless of system infrastructure. In addition, the P25 suite of standards provide an
open interface to the RF Sub-System to facilitate interlinking of different vendors’ systems.