Project 25 Documents & Standards Reference
FDMA Air Interface
Project 25 (P25) FDMA for its Phase 1 conventional and trunked radio systems:
Project 25 was established by joint efforts of:
■ The Association of Public Safety Communications
Officials International (APCO)
■ National Association of State Technology
(formerly Telecommunications) Directors (NASTD)
■ Selected Federal Agencies
■ The National Communications System (NCS).
Project 25 was set up to address the need for common digital public safety radio communications standards for First Responders and Homeland Security/Emergency Response professionals.