Honeywell International Inc. 7900L0P Manuale Utente

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Dolphin® 7900 Mobile Computer User’s Guide - Prelim. Draft Rev (a)
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Wireless WAN Communications with GSM/GPRS 
Overview
Dolphin 7900 terminals can be configured with Wireless Wide Area Network (WWAN) via an integrated Siemens
® 
GSM/GPRS 
tri-band radio module. 
GSM - GSM stands for Global System for Mobile communications. It is an open, non-proprietary wireless wide area networking 
system that is constantly evolving and growing. One of its great strengths is international roaming capability, which provides 
standardized dialing in more than 170 countries. 
GPRS - GPRS stands for General Packet Radio Service. It is a non-voice value added service that allows packet switched data 
and information to be instantly sent and received across a mobile telephone network.
Powering Up the GSM/GPRS Radio Driver
When the mobile computer is first initialized, the radio driver for the GSM module is installed. Before using the radio, make sure 
that the GSM radio is powered up. For more information, see 
The Radio Manager
 on page 
4-8.
Tri-Band Antenna
Requirements
Using GMS/GPRS on a Dolphin 7900 terminal requires:
•           a network subscription to a GSM/GPRS network (you need to know what service providers are in your geographic area), and
•           a SIM card installed on the terminal.
Capabilities
Dolphin 7900 computers with integrated GSM/GPRS WWAN radios are optimized for the following two-way voice and data 
communications:   
•           GSM voice data ("dial-up")
•           SMS (Short Message Service) text messages
•           GPRS Class 10 - data transmissions average. 40-60 Kbps (wireless network carrier dependent)
Dolphin 7900 terminals configured with a GSM/GPRS 
radio feature a tri-band antenna that supports 900, 
1800 and 1900 MHz frequencies for worldwide mobile 
applications.