User's Manual

Dolphin® 9900 Mobile Computer User’s
Guide–Preliminary
Rev (a) 02
3/5/08
8 - 1
8
Working with GSM (Only for HD5990LUP)
Overview
The Dolphin 9900 can be configured with an integrated Siemens
®
GSM/GPRS quad-band radio module
for WWAN communications.
Quad Band Antenna
Dolphin terminals configured with a GSM radio feature an external antenna that is optimized for power
output and receiver sensitivity. This is an omni-directional antenna with zero dBm gain.
For the MC-75 radio, there are two different antennas based on geographical location; each supports two
bandwidths:
Europe Supports 900 MHz and 1800 MHz bands.
North America Supports 850 MHz and 1900 MHz bands.
Capabilities
Dolphin terminals with integrated GSM/GPRS radios are optimized for the following two-way voice and
data communications:
• GSM voice data ("dial-up")
• GPRS Class 10: Data transmissions average 40-60 Kbps (available speed depends on the wireless
network carrier).
You can use the GSM radio for voice communication and data communication but not at the same time.
If you want to communicate over the phone (voice), you cannot send data. If you want to send data, you
cannot use the phone.
Requirements
Using GSM/GPRS requires a:
• Network subscription to a GSM/GPRS network (you need to know what service providers are in your
geographic area), and
• An installed SIM card that has been activated by the network service provider (see SIM Card
Installation on page 8-2).
GSM Short for Global System for Mobile communications, GSM is an open, non-proprietary wireless
WAN system that is constantly evolving and growing.
GPRS Short for General Packet Radio Service, GPRS is a non-voice value added service that allows
packet-switched data to be instantly sent and received across mobile telephone networks.