標準號：BS DD CEN/TS 14821-4-2003
中文標準名稱：交通和旅游信息(TTI).通過蜂窩網絡的TTI文電.自主服務協議
英文標準名稱：Traffic and Travel Information (TTI). TTI messages via cellular networks. Service-independent protocols
標準類型：R07
發布日期：2003/7/9 12:00:00
實施日期：2003/7/9 12:00:00
中國標準分類號：R07
國際標準分類號：35.240.60
引用標準：EN ISO 14819;ISO/IEC 9797;ISO/IEC 10116;ISO/IEC 10118-2;ISO 11568-3;CCITT Recommendation E.212
適用范圍：This technical specification defines the specific interfaces and functionality of traffic telematics (TT)services based on the use of cellular networks. Device manufacturers are enabled to develop terminalequipment compatible to services based on this standard. This will allow for interoperability of differentterminal equipment and service providers which allows competition between service providers andterminal manufacturers. Furthermore it sets the scene for international availability of these services.This technical specification specifies· TT-specific interfaces between terminal and service centre. This especially incorporates themessage sets of the application data protocols and the service-independent communicationhandling (including conditional access and transport protocols).· Functionality, procedures and requirements of basic terminal components as well as their interactionwith the service centre. This especially comprises conditional access and security mechanisms.· Service Specifications, which are essential to ensure consistent behaviour of terminal and servicecentre.The services incorporated within this issue comprise:· breakdown and emergency services· interactive traffic information services· broadcast traffic information services· navigation services (route assistance, route advice, homing)· operator services· general information services· floating car data collectionIt is envisaged that future research and development will lead to improvements on the services listedabove as well as to the creation of new services. Nevertheless this technical specification provides theframework for seamless integration of new features and services into the existing architecture.