Scope of the System and Standards Definition

This Enhanced Digital Access Communications System and Standards Definition describes the functional elements of an FDMA, digital, trunked, Land Mobile Radio communication system, as well as defining the basic system architecture. This document provides the basic expectations of Enhanced Digital Access Communications Systems, and outlines the organization of the family of documents. This document also serves as a foundation for the coherent development of the remaining documents within the family of documents. Additional and more specific information can be referenced in each of the corresponding documents within this family.

Scope of the Family of Documents

As a group, the family of documents describe the Enhanced Digital Access Communications System, inclusive of the equipment requirements which allow both compatibility and interoperability between various systems and elements. These systems provide advanced digital land mobile radio services for private radio communications, and services for industrial, SMR, federal, public safety and utility organizations, on all levels, including local, state and national. The family of documents will be backward compatible and interoperable with existing installed Enhanced Digital Access Communications Systems (EDACS®)¹ per the defined technical definition of section 4. This document describes trunked systems utilizing digital signaling, digital voice, and analog voice for conventional mutual aid operation.

This family of documents is applicable to Land Mobile equipment licensed under National Telecommunications And Information Administration (NTIA) and Federal Communications Commission (FCC) rules and regulations. They are suitable for 12.5 kHz or 25 kHz channels and designed for VHF, UHF, 800 and 900 MHz frequency bands. The family or specific documents within the family may be applicable in situations other than those noted above. interested parties are encouraged to use the documents as appropriate but are cautioned t'o carefully compare the documents to the specific requirements of their application or equipment.

¹ EDACSB® is a registered trademark of Ericsson