Filter
Top Products
White Paper Z300
20 October 2005
The GSM system limits the ability to use all eight
time slots, so the Z300 uses up to four time slots
for receiving data, and one slot for transmitting.
This means the speed for receiving data is up to
85,600 bps and up to 21,400 bps for sending data.
Using GPRS with the Z300 has several advantages,
for example:
• Constant connection
• High speed
• Automatic access to increased bandwidth while
downloading large files such as pictures and
sounds
• Cost efficiency
• Use of transmission capacity only when needed
to reduce cost
• WAP over GPRS
• Access to Internet via WAP at high speed and
with a constant connection.
• Provide settings
• Receive GPRS configuration settings from the
provider over the air, OTA, making manual con
-
figuration unnecessary.
• User controlled settings
• Take advantage of full user control in the data
connections menu, establishing multiple
descriptions and accessing advanced settings
for GPRS.
Interruption of GPRS data account
When the user is using WAP via GPRS on the
Z300, the GPRS connection is automatically dis
-
connected when the user answers an incoming
call. However, when the call has ended, the user is
given the possibility to resume the WAP session.
SIM application toolkit
The SIM Application Toolkit (SIM AT) is a smart
card-centric method of deploying programs that
applies only to GSM and to SMS and USSD trans
-
ports. Programs must be distributed on smart
cards. WAP is an Internet-centric method of
deploying programs that is independent of network
technology. Programs and content are kept cen
-
trally on web servers and downloaded as required.
While there is some overlap, WAP is a particularly
good choice while deploying programs that also
have an HTML version for desktop use. Work is
currently underway on building interfaces between
the two technologies.
For an operator, a company or service provider,
SIM AT offers a powerful way to deploy programs
and services to users, without the need for new or
upgraded equipment. All necessary setup and pro
-
gramming is distributed to users over the air,
directly to their phones. In the Z300, a separate
menu is available for functions residing on the SIM
card. These can include submenus for controlling
functions, and also functions that allow the phone
to initiate calls, send data, and display information
to the user.