Project 25 Documents & Standards Reference

Description and Specification Documents

Two types of documents are used to describe and specify the interface, service, or equipment: one type provides an overview, the other type defines the protocols.

• The Overview document describes the operation and functions associated with a standard, but it does not prescribe a standard. Thus, the overview document is considered informative. The overview document provides background relating to the P25 SoR (Project 25 Statement of requirements), shows its relationship to the overall P25 (Project 25) system model, and provides guidance to users, system designers, and manufacturers.

• The Protocol documents are considered normative. They provide the required messages, formats, and specifications necessary for the P25 interfaces, services, and equipment to be interoperable and meet the users’ needs.