NetworkSupportChapter —4
142 700Series Color MobileComputer User’s Manual
GSM/GPRS CORE Module (760 Computers with WAN Radios)
GSM (Global System for Mobile communications) is an open, nonpr o-
prietary wireless system. GPRS (General Packet Radio Service) is the high-
speed dataevolution of GSM that supports Internet Protocol (IP), enab-
ling access to Internet and intranet content and applications from GPRS
wireless devices.

WANMonitor — General

The WAN Monitor COREmodule displays helpful information about the
GSM/GPRSradio option built into your 760 Computer.T he following
illustrations are for a GSM/GPRS Siemens MC45 radio.
Below are descriptions and meanings for each piece of infor mation pro-
vided via the General tab. Note that the information is listed alphabetically.
ATT Wireless
Network
Lists the name of the service providing th e network support.
Band Identifiesthe frequency spectrum used by the radio module.
BER (Bit Error Rate) The average number of bits transmitted in error.
f/w Identifiesthe firmware version, if available.
h/w Identifiesthe hardware version, if available.
NetworkType The networktype which would list “GSM-GPRS.”
Phone Number Identifiesthe telephone number assigned to the SIM card.
Radio ESN The ElectronicSerial Number (ESN) assigned to this radio module. “Unavailable” appearsif a
numbercannot be read from the radio. This number, which you give to yourprovider, is either
onth e boxor on a label inside the battery compartment. The label would include the term
“ESN” and a bar code alongw ith the serial number.
Registeredon
homenetwork
Ifthe WAN radio module has registered with a service providernetwork, one of these appears:
SRegisteredon home network: Radio module is registered on its “home”network.
SRegisteredon roamed network: Radio module registeredon another service provider’s network.
SRadio Not Registered: There is no network within range of this radio module.
RSSI Displaysthe Received Signal Strength Indicator (RSSI) frequencyor lists “Unavailable” if there
is no signal orth e signal cannotbe re trieved fromthe radio module.
SerialStatus Indicateswhether serial communications passed (“Serial com OK”) or failed (“Serial com FAIL”)
in its lasttransaction. A status of “Serial com FAIL” typically indicates that the 760 Computer is
unable toe stablish communicationwith the radio module installed within.
History:
This displays an active history of this radio module’s connection qu ality.
FriendlyIndicator:
Usually indicates the signal strength for this radio module. Three filled
dots indicate a high quality or strong signal. Three e mpty dots indicate
that the signal is out of range or there is no signal detected.