Sony Ericsson J200 manual Bearer type characteristics, Security using WAP

Improve productivity

Improve and simplify the communication flow within an organization by making information avail- able to mobile users. A company or organization can use a WAP gateway to provide a secure con- nection to the company network for their users.

The WAP profiles

The J200 holds up to five WAP profiles, each with a group of network settings and a home page. If you provide a corporate WAP service on your Intranet, it is useful to enter an Intranet WAP profile in user phones. The WAP profile holds network settings

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and user identification. Users can easily switch between corporate services and WAP services on the Internet, simply by switching WAP profile.

Connection-orientated WAP

The J200 supports connection-oriented WAP over GSM as well as GPRS data. In general, this means that the connection between the WAP browser in the phone and the WAP Gateway is maintained in a session with error recovery services. This provides high reliability with a reduced risk of errors in trans- mission, and improves efficiency in WAP browsing.

Bearer type characteristics

The J200 accesses WAP services over IP. IP can be provided either over GSM Data or GPRS, depend- ing on network services.

Typical differences that distinguish the bearer types are listed below.

GPRS access

•The connection is maintained “constantly”, with data transmitted in packets, and transmission capacity of the application in use on an as- needed basis.

•GPRS offers higher transmission speed than with GSM Data or SMS access.

GSM data access

•Circuit connection of data calls, means that the phone is connected during the entire WAP ses- sion.

•Pricing is comparable to that of data calls in the network.

•Pricing of GPRS can be dependent on the actual use of bandwidth, which means the user is charged for the volume of data transmitted, rather than the duration of the connection.

•While transmitting large amounts of data, band- width can be increased automatically to allow faster transmission speed.

•Ideal for complex pull services, browsing, data transfer, provisioning, pager services, messag- ing services, info services, push initiations.

Security using WAP

The J200 supports WAP 1.2.1, a version of the Wireless Application Protocol that includes WTLS class 2.

While using certain WAP services, the user may want more security than normal, for example when using banking services. The user establishes a secure connection between the phone and the WAP gateway.

13 November 2004