| T-Mobile
Technology.
T-Mobile operates an all-digital, national wireless network based on the
globally dominant GSM (Global System for Mobile Communications) technology.
There are more than 1 billion GSM subscribers worldwide. T-Mobile’s
entire network has been enhanced to provide 2.5G services with GPRS (General
Packet Radio Service), providing customers with wireless Internet access
through a variety of integrated devices at average speeds of 40 Kbps.
Augmenting the national data network, T-Mobile operates a Wi-Fi wireless
broadband network with service in more than 4,700 public locations across
the country under the name T-Mobile HotSpot.
Customers with a Wi-Fi-enabled laptop or PDA can access the network for
a high-speed wireless Internet connection at speeds 40 to 50 times faster
than standard dial-up Internet access.
 GSM
/ GPRS Technology.
GSM's proven, feature-rich digital technology provides customers with
integrated voice, high-speed data, paging and short message service capabilities,
as well as excellent sound quality and call reliability. The well-developed
network ensures that all calls and messages are processed quickly and
reliably. The all digital network delivers better sound quality than other
wireless services, including crisper, clearer voice quality and less static,
fading and background noise. Independent laboratory and field test reports
validate near parity with wire lines.
GPRS is a standardized packet-switched data service that is an extension
of the GSM architecture. GPRS is what makes the Internet wireless.
The GPRS standard uses upgraded radio base stations linked to a new network
based on 'packet' technology. With circuit switched networks, the user
dials the required number and the network connects the call, allocating
a circuit between the two parties until the call is ended. Packet technology
allows the user to be connected to their home carrier data services via
the subscriber's handset, PDA or laptop, and then send and receive data
as required throughout the day. The 2.5G GPRS network is only used when
data is being transmitted, but the user retains a virtual connection to
the chosen computer network throughout the day.
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Available
through GSA