7.3. S7_IE_BLK Structure

The S7_IE_BLK data structure contains ISUP message parameters.

The S7_IE_BLK structure is defined as follows:

typedef struct { 
  short  length;                  /* must be less than MAXLEN_IEDATA  */ 
  char  data[S7_MAXLEN_IEDATA];  /* First IE (there may be more)     */ 
} S7_IE_BLK, *S7_IE_BLK_PTR;  

S7_MAXLEN_IEDATA is a constant defined in the header file. Parameter blocks should not be longer than this value.

Table 10. S7_IE_BLK Structure Fields 

Field	Description
length	IE data block length, which must be less than S7_MAXLEN_IEDATA
data[s7_MAXLEN_IEDATA]	Message parameters themselves, one after the other.

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