Welltech Dialogic SS7 Protocols ISUP - Manual (Page 17)

Dialogic ® SS7 Protocols ISUP Programmer's Manual Issue 15
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3 Internal Data Structures
3.1 Introduction
This chapter describes the internal data structures that are used by the ISUP
module to assist the user in understanding the operation of the module. It is
not necessary to acquire detailed knowledge of these structures in order to
use the module.
3.2 Global Ram Data Structure
The entire data storage used by the module is contained in a single structure.
This structure contains global configuration settings, per circuit storage,
circuit group configuration data, and per-call storage all relating to operation
of the ISUP protocol. It also contains internal event queues, timer control
structures and internal buffers for message processing.
3.3 Circuit Group Data Structure
Each circuit group has a data structure within the global ram structure that
contains the user supplied configuration parameters for the circuit group (e.g.
Signaling Point Codes, Circuit Identification and Configuration Options). The
information in the circuit group data structure applies to all circuits in the
circuit group.
3.4 Per Circuit Data Structure
Each circuit has a data structure within the global ram structure that is used
to store the current state of state machines associated with the circuit and
any current call details.