Intermec 700 Series User Manual page 102

SECTION 4
WWAN Radio Options
The 700 Series Computer can integrate either the GSM/GPRS or the
CDMA/1xRTT radio along with the 802.11b radio and the Wireless Printing op-
tion. The WWAN radio option accommodates any Wireless WAN requirements,
such as taking the 700 Series Computer off the premises in a delivery vehicle to
cover a much larger area.
GSM/GPRS
The GSM (Global System for Mobile communications) and GPRS (General Pack-
et Radio Service) wireless infrastructure increases voice capacity, enables person-
alized "user-aware" services, and creates networking efficiencies to help wireless
service providers drive reduced operating costs.
CDMA/1xRTT SB555
Code Division Multiple Access (CDMA) is a form of "spread-spectrum," a family
of digital communication techniques used in military applications for years. The
core principle of spread-spectrum is the use of noise-like carrier waves, and, as
the name implies, bandwidths much wider than that required for simple point-
to-point communication at the same data rate.
GSM is an open, nonproprietary system. One of its great strengths is the
international roaming capability. This provides seamless and same-stan-
dardized same-number contactability world-wide. GSM satellite roaming
has extended service access to areas with unavailable terrestrial coverage.
GPRS is the high-speed data evolution of GSM. GPRS supports Internet
Protocol (IP), enabling access to Internet and intranet content and applica-
tions from GPRS wireless devices. The anticipated data rate for GPRS is
115 Kbps and throughput rates of 30–60 Kbps have been achieved initially.
This high speed capability enables vehicle applications to become real-time
and to use the Internet for access to corporate data or information in the
form of traffic or navigation.
1XRTT, the first phase of CDMA2000, is designed to support up to 144 KB
per second packet data transmission and to double the voice capacity of cur-
rent generation CDMA networks.
SB555 Embedded Module, from Sierra Wireless, provides complete wire-
less functionality and integrates easily into the most compact and slender
mobile applications with its small flexible design. The SB555 offers maxi-
mum coverage and access to entire CDMA networks.
700 Series Color Mobile Computer User's Manual
Network Support
4-25