Type 0 Extension 5 - mattpascoe135/dab GitHub Wiki

#Type 0 Extension 5 The service component language feature is used to signal a language associated with a service component. The feature is encoded in Extension 5 of FIG type 0 (FIG 0/5). Figure 45 shows the structure of the service component language field which is part of the Type 0 field (see also figure 4).

ext 5

The following definitions apply:

###L/S flag: this 1-bit flag shall indicate whether the service component identifier takes the short or the long form, as follows:

0: short form;

1: long form.

###Short form:

  • MSC/FIC flag: this 1-bit flag shall indicate whether the component is carried in the MSC in Stream mode or in the FIC, and whether the subsequent field contains the SubChId or the FIDCId (see clause 6.3.1), as follows:

    0: MSC in Stream mode and SubChId identifies the sub-channel;

    1: FIC and FIDCId identifies the component.

  • SubChId (Sub-channel Identifier): this 6-bit field shall identify the sub-channel in which the service component is carried;

  • FIDCId (Fast Information Data Channel Identifier): this 6-bit flag shall identify the service component carried in the FIDC (see clause 6.3.1);

  • Language: this 8-bit field shall indicate the language of the audio or data service component. It shall be coded according to TS 101 756 [16], tables 9 and 10.

###Long form:

  • Rfa: this 3-bit field shall be reserved for future additions. The bits shall be set to zero until they are defined;

  • SCId: this 12-bit field shall identify the service component (see clause 6.3.1);

  • Language: see above.