This section describes the ISUP functions that initialize event structures to generate specific ISUP protocol messages. Each function description contains tables that specify the initialized fields for each supported switch type. The tables are formatted using the following standards:
Each table row corresponds to an information element or to a field within an information element, and each column corresponds to an ISUP variant.
Fields are indented under the information element that contains them.
Required information elements appear in bold face.
NOT_PRESENT indicates an optional parameter.
A blank table cell indicates that the parameter is not supported for this variant.