4.4. USRINFO_ELEM

The USRINFO_ELEM data structure is used to return User-to-User Information (UUI) data using the gc_GetCallInfo( ) or the gc_GetSigInfo( ) function. The USRINFO_ELEM data structure is defined as follows:

    typedef struct {
      unsigned char length;    /* protocol_discriminator + user information
                                  length */
      unsigned char protocol_discriminator;
      char usrinformation[256];
   } USRINFO_ELEM, *USRINFO_ELEM_PTR; 

Table 43. USRINFO_ELEM Fields 

Field	Description
length	First byte defines the length of the data block in bytes. Value must be the sum of the protocol_discriminator length plus the usrinformation length.
protocol_discriminator	Second byte defines the network protocol.
usrinformation	Data containing the application dependent user information.

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