Sony Ericsson T20e manual Bearer Type Characteristics, GSM Data Access, SMS Access

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Bearer Type Characteristics

The phone accesses WAP services over SMS or IP, where IP is provided over GSM Data. Typi- cal differences which distinguish the bearer types are listed below this diagram.

GSM Data Access

•Circuit connection of data call means that the phone is connected during the WAP session.

•Connection-oriented WAP (user option) uses error recovery services to provide high reliabil- ity.

•Comparably higher transmission speed than with SMS access.

•Pricing of GSM Data access can be compared to pricing of data calls in the network.

•GSM Data is suitable for Complex Pull services, Browsing and Data transfer.

•GSM Data is not suitable for Provisioning, Pager service.

SMS Access

•SMS point-to-point is used and not SMS Cell Broadcast.

•The connection is maintained by the automatic exchange of ”messages” between the phone and the SMS Service Center.

•Comparably lower transmission speed than with GSM Data access.

•Pricing of SMS access can be compared to pricing of the normal SMS in the network.

•SMS is suitable for Messaging services, Info services, Provisioning.

•SMS is not suitable for Browsing or Data transfer.

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Contents Mobile Phone T20e White Paper Page Contents Page Preface Purpose Of This DocumentProduct Overview WAP Services Using WAP In The T20eSMS Access Bearer Type CharacteristicsGSM Data Access Connection-oriented And Connection-less WAP Gateway CharacteristicsSecurity Using WAP Over-The-Air Provisioning Of WAP Settings Configuration Of WAP SettingsPowerful Messaging and Chat Enhanced Messaging Service EMSPicture Editor PicturesMelodies Mobile Chat Via SMS Cable Connection ConnectivityInfrared Modem Functions and Features In-phone Functions And FeaturesMore In-phone Functions And Features Start-up And Shut-down ShowsFixed Dialling And Restricted Calls Network-Dependent FeaturesMore Network-dependent Features SIM Application Toolkit SIM AT Services Supported By The T20eService Mode Support T20e GET Input More TimePolling OFF Poll IntervalSET UP Call SET UP MenuUser Interaction With SIM AT SMS PP DownloadSend Short Mess Terminology and Abbreviations Hdml HdtpHtml HttpUssd VADVAS WAELinks Trademarks And Acknowledgements Related InformationDocuments Appendix Technical Specifications Ambient TemperaturesGeneral Exterior DescriptionGmsk Performance And Technical CharacteristicsDimension GSM 900/E-GSM Dimension GSM Dimension Full rate Enhanced full rateCurrent Consumptions, Talk And Standby Times Speech CodingWAP/WML WAP Browser Technical DataFeature Support in the T20e WAP browser Enhanced Messaging Service Technical Data EMS Feature Support in T20eEMS Feature Support in T20e Page Index