White Paper Z300
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
•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
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,
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
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,
19 | October 2005 |