Troubleshooting guide

Cingular Communication Manager Help
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If you are moving while connected, your wireless connection may drop if
signal is lost (approaching -110 dBm). Prior to losing signal your wireless
device should start to scan for a stronger signal from a roaming provider in
order to improve the performance of the connection. If your device
automatically switches to a roaming provider, the data session will be lost
for a short interval. Disconnects will likely result in interruption of
application functionality and data transfers that are underway. Critical
work that cannot be interrupted should not be performed while moving in
order to minimize this risk.
Note: Signal strength is not the only variable factor in determining the
throughput of your wireless connection. Distance from cell site, network
availability and traffic, device, applications, tasks, file size, transmission
limitations and interference, and other factors also impact the speed of your
connection.
GSM Network Types: GPRS, EDGE, UMTS
Cingular offers GPRS, EDGE and UMTS services.
GPRS (General Packet Radio Service) is an IP-based service for GSM
cellular networks, and has been deployed worldwide. GPRS/EDGE
supports IP-based applications and provides a mobile extension of the
Internet, or private intranets. More information on GPRS can be found at
http://www.cingular.com/midtolarge/gsm_gprs
EDGE (Enhanced Data Rates for Global Evolution) is a powerful
enhancement to the radio technology used by GPRS. EDGE dramatically
improves national wide area wireless data throughput rates and network
capacity, while providing full backward compatibility for GPRS devices
and applications. More information on EDGE can be found at
http://www.cingular.com/midtolarge/edge
The Cingular UMTS network offers wireless mobility at broadband speeds.
UMTS is currently available in six metro markets: San Francisco, Seattle,
Phoenix, Dallas, San Diego and Detroit. For more information and the latest
updates on availability go to http://www.cingular.com/midtolarge/umts
.
How to disconnect from a Cingular Data network
To disconnect from any network connection using the Cingular
Communication Manager, simply click the disconnect button in the
primary user interface or exit the application using the X in the right hand
upper corner of the user interface.