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6. Data Structure Reference
The data structures used by selected ISDN functions are described in this chapter.
These structures are used to control the operation of functions and to return
information. The data structures defined include:
• CC_RATE_U
• channel_id
• DCHAN_CFG
• DLINK
• DLINK_CFG
• IE_BLK
• L2_BLK
• MAKECALL_BLK
• NONCRN_BLK
• PARM_INFO
• SPID_BLK
• TERM_BLK
• TERM_NACK_BLK
• ToneParm
• USPID_BLK
• USRINFO_ELEM
• WAITCALL_BLK
The data structure definition is followed by a table providing a detailed
description of the fields in the data structure. These fields are listed in the
sequence in which they are defined in the data structure.