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The present document specifies the Service Information (SI) data which forms a part of Digital Video Broadcasting 
(DVB) bitstreams, in order that the user can be provided with information to assist in selection of services and/or events 
within the bitstream, and so that the Integrated Receiver Decoder (IRD) can automatically configure itself for the 
selected service. SI data for automatic configuration is mostly specified within ISO/IEC 13818-1 [1] as Program 
Specific Information (PSI). 
The present document specifies additional data which complements the PSI by providing data to aid automatic tuning of 
IRDs, and additional information intended for display to the user. The manner of presentation of the information is not 
specified in the present document, and IRD manufacturers have freedom to choose appropriate presentation methods. 
It is expected that Electronic Programme Guide (EPG) will be a feature of Digital TeleVision (TV) transmissions. 
The definition of an EPG is outside the scope of the present document (i.e. the SI specification), but the data contained 
within the SI specified in the present document may be used as the basis for an EPG. 
Rules of operation for the implementation of the present document are specified in ETSI TS 101 211 [i.1].