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ITU and ANSI SCCP Primitives

Overview

This section lists the SCCP primitives supported by the SCCP/TCAP feature. Primitives are sent to and received from the CSP in the PPL Event Request and PPL Event Indication messages in the ICB:

• SS7 SCCP Parameters (0x20).

Important! SCCP/TCAP primitives should not be confused with Dialogic PPL primitives. SCCP Components should not be confused with Dialogic PPL components. See the PPL Information for PPL event values and the API Reference ICB formats.

The required ICBs with mandatory (M) and optional (O) parameters are shown with each primitive. See SCCP/TCAP Parameter Information for the data required for each parameter.

ITU/ANSI SCCP Events

The SCCP User Interface is responsible for message validation and format conversion. The following events are used to send and receive primitives for the PPL component, SCCP SUSI (0x67).

N-UNIT-DATA

Request | Indication
--- | ---
SCCP Parameter ICB (M) - User Data (M) - Calling Party Address (CGPA) or CGPA Elements (O) - Called Party Address (CDPA) or CDPA Elements (M) - Quality of Service (O) | Same as Request.

N-NOTICE (0x22)

Request | Indication
--- | ---
| SCCP Parameter ICB (M) - User Data (M) - Calling Party Address (CGPA) or CGPA Elements (O) - Called Party Address (CDPA) or CDPA Elements (M) - Reason for Return (M)

N-STATE (0x03)

Request | Indication
--- | ---
SCCP Parameter ICB (M) - Subsystem Number (M) - Subsystem Status (M) | SCCP Parameter ICB (M) - Destination Point Code (DPC) (M) - DPC Status (O) - Remote SCCP Status (O)

Important! When you use the N_STATE event to set a subsystem prohibit, all of the active TCAP dialogs associated with the SSN are automatically released.

N-PCSTATE (0x04 )

Request | Indication
--- | ---
| SCCP Parameter ICB (M) - Destination Point Code (DPC) (M) - DPC Status (O) - Remote SCCP Status (O)

See Transaction Capability Application Part.
See Programmable Protocol Language.
A condition that, when met, drives a state machine from one state to another. A condition that drives a Component out of its current state by invoking an associated primitive.
See Information Control Block.
See Signaling System Number Seven.
In PPL, a condition that, when met, drives a state machine (PPL Component) from one state to another, by invoking an associated Primitive. In PPL files, an Event is marked by an arrow and text.
International Telecommunications Union (UN)
American National Standards Institute. ANSI administers and coordinates the U.S. voluntary standardization and conformity assessment system for the
telecommunications industry. More details on these standards may be
viewed at www.ansi.org.
A number that addresses a node in a SS7 network.
Destination Point Code