6. Data Structure Reference
315
makecall_blk.isdn.facility_coding_value = 0xFF;
makecall_blk.isdn.usrinfo_bufp = NULL;
makecall_blk.isdn.nsfc_bufp = NULL;
For more on the MAKECALL_BLK structure, see the cc_MakeCall( ) function
description in Chapter 5. ISDN Function Reference.
6.9. NONCRN_BLK
The NONCRN_BLK structure contains information related to a GLOBAL or
NULL call reference number (CRN). The messages are sent to the network using
the SndNonCallMsg( ) function.
The structure is defined as follows:
#define MAXLEN_IEDATA 254
typedef struct
{char sapi;
char ces;
short length;
char data[MAXLEN_IEDATA];
} NONCRN_BLK, *NONCRN_BLK_PTR;
Table 38. NONCRN_BLK Field Descriptions
Field Description
sapi The Service Access Point Identifier. For call control procedures,
this value is always zero.
ces The Connection Endpoint Suffix. For the User side, the value is
always one. For the Network side, this value is between one and
eight.
length The total bytes in the data field.
data This field contains the information element(s) to be sent.