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White Paper Z300
19 October 2005
Data connections
In order to browse via WAP, the user must have a
data communication connection configured in the
phone. This connection contains specific settings
and parameters to connect to an appropriate
server. Several data connections can be saved in
the Z300. To make it easier for the user, data con
-
nections can be provided by the operator via OTA
provisioning. For more information about configu
-
ration of WAP settings, see “Configuration of WAP
settings” on page 17.
Advantages of data connections include:
• Once the data connections are defined and
named, the user does not have to enter the set
-
tings for the connection again.
• Data connections can be re-used at any time.
• Individual data settings for working with WAP
can be stored and activated as needed.
• Data connections can be used for both GSM
Data and GPRS connection settings.
• Bearer type for WAP and corresponding bearer-
specific parameters may be selected.
• Data connections contain the necessary set-
tings for the Internet access point, including
modem pool phone number or IP address, user
ID and password.
General Packet Radio Services
The introduction of GPRS (General Packet Radio
Services) is one of the key steps in the evolution of
today’s GSM networks for enhancing the capabili
-
ties of data communication. Data traffic is increas-
ing enormously (over both wired and wireless
networks), with the growth in demand for Internet
access and services paralleling that for mobile
communications.
The demand for high-speed Internet access will be
the key driver for coming generations of wireless
services, and GPRS can deliver the necessary
speed. GPRS allows creation of innovative serv
-
ices, makes it possible to address new and previ-
ously inaccessible market segments and increases
customer loyalty.
GPRS applications can be developed as both hori-
zontal and vertical. Vertical applications are spe-
cific, including those for operations such as
reaching police and emergency, taxi, delivery or
automated services (vending machines, supervi
-
sion, vehicle tracking). Horizontal applications are
more generic and include those for Internet access,
e-mail, messaging, e-commerce and entertain
-
ment.
GPRS is able to take advantage of the global cov-
erage of existing GSM networks. Applications
developed for GPRS can be deployed on a large
scale and can reap the associated benefits. GPRS
also provides a secure medium for connections to
banking and financial services.
Using GPRS in the Z300
Instead of occupying an entire voice channel for
the duration of a data session, the Z300 sends/
receives data in small packets, as needed, much
like IP on the Internet. Because of this, the Z300
maintains a constant online connection, its data
transmission abilities summoned by the application
in use on an as-needed basis.
The GPRS specification includes four coding
schemes – CS1, CS2, CS3 and CS4 – that allow
data speeds of 9,050 bps, 13,400 bps, 15,600 bps
and max 21,400 bps per slot, respectively. The
Z300 works with all four coding schemes, but data
speed naturally varies according to network config
-
uration. At the moment, CS-3 and CS-4 are not
supported in any live network, i.e, present speed is
limited to 53,600 bps.