The document establishes guidance in implementation and usage of the functionality described in the STI standard EN 300 797. Subsets of the STI standard are defined in order to make interoperable solutions possible for different suppliers of STI devices. The subsets are called STI Levels. Interoperability is ensured if the STI Logical Interface (LI) and STI Physical Interfaces (STI-PI,X) are the same for entities transporting DAB Service Components, Service Information and control messages in a DAB collection network. The present document only particularises the Logical Interface (LI) layer of the STI, i.e. the syntax for STI-D frames and STI-C messages, to provide interoperability. The document defines a functional hierarchy of levels. Higher levels comprise lower levels. Three levels are specified where the highest STI Level does not comprise all STI functionality that could be implemented using EN 300 797. Some of the functionality is not included due to the fact that it is not assumed to be widely used. This functionality may optionally be added to any of the defined STI Levels. The document defines the minimum functionality an upstream or downstream entity shall provide on each level to be considered compliant with that level.
| Edition : | 1.1.1 |
| Number of Pages : | 25 |
| Published : | 12/01/2001 |
