5.1. IE_BLK

The IE_BLK data structure is used to set up and send and receive information to and from the B channel using the gc_SetInfoElem( )or the gc_SndMsg( ) function. The cclib field of the GC_IE_BLK structure (defined in the Global Call API Library Reference) uses the IE_BLK structure to define the Information Element (IE) block to be sent using the gc_SetInfoElem( ) or gc_SndMsg( ) function. The IE_BLK data structure is defined as follows:

typedef struct {
   short   length;                   /* must be less than MAXLEN_IEDATA  */
   char    data[MAXLEN_IEDATA];      /* application defined data */
} IE_BLK, *IE_BLK_PTR;  

See Table 36 for descriptions of the IE_BLK fields.

Table 36. IE_BLK Fields

Field	Description
length	Length of data block in bytes. Value must be less than MAXLEN_IEDATA as defined in gcisdn.h.
data[MAXLEN_IEDATA]	Data for user's IE block. Must be formatted to meet CCITT recommendations. The maximum length of the data field is MAXLEN_IEDATA.

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