User's Manual

14221-1400-2000
18
5. INTRODUCTION
The P5500 series portable radio is available in two models: the P5550 Scan model with a limited 6-button
front-mounted keypad and the P5570 System model with a 15-button DTMF front-mounted keypad.
Figure 5-1: P5550 Scan and P5570 System Models
The P5500 portable radio delivers end-to-end encrypted digital voice and IP data communications. It is
designed to support multiple operating modes including:
• EDACS
®
(Enhanced Digital Access Communications System)
• ProVoice™ Trunked Mode
• OpenSky
®
Trunked Protocol
• P25 Trunked Mode
• P25 Digital Conventional Mode
• Conventional Analog Mode
The P5500 portables can include all of these modes or just one. Additional modes of operation can be
added with software updates.
The P5500 supports a full range of advanced digital trunking features, including voice group calls,
priority scanning, emergency calls, late call entry, and dynamic reconfiguration. It performs autonomous