User's Manual

Table Of Contents
14221-1500-2000, Rev. K
27
5. INTRODUCTION
5.1 GENERAL
The XG-25P is available in two models: the Scan model with a limited 6-button front-mounted keypad
and the System model with a 15-button DTMF front-mounted keypad. The Harris XG-25P portable radio
delivers end-to-end digital voice and IP data communications. It is designed to support multiple
operating modes including:
P25 Trunked Mode
P25 Digital Conventional Mode
EDACS
®
(Enhanced Digital Access Communications System) or ProVoice™ Trunked Modes
Conventional Analog Mode
OpenSky
®
Trunked Protocol (OTP)
The XG-25P portables can include all of these modes or just one. Additional modes of operation can be
added with software updates.
The XG-25P supports a full range of advanced digital trunking features, including Talk Group calls,
priority scanning, emergency calls, late call entry, and dynamic reconfiguration. It performs autonomous
roaming for wide area applications. High quality voice coding and robust audio components assure
speech clarity.
In trunked modes, the user selects a communications “operating” system (i.e., EDACS, ProVoice, or P25)
and group. While communicating in a trunked mode, channel selection is transparent to the user and is
controlled via digital communication with the system controller (e.g., a CSD in an EDACS system). This
provides advanced programmable features and fast access to communication channels.
In Conventional Analog mode, the user selects a channel and communicates directly on that channel. A
channel is a transmit/receive radio frequency pair.
The exact operation of the radio depends on the operating mode, the radio’s programming, and the
particular radio system. Most features described in this manual can be enabled through programming.
Consult your System Administrator for the particular features programmed into your XG-25P. Then refer
to the corresponding section(s) within this manual for feature and operation information.
The XG-25P series portable radios operate reliably even under adverse conditions. These radios meet
MIL-STD-810G specifications for wind driven rain, humidity, and salt fog.