Messages overview

This section specifies the layout of all messages passed between the application and the SCCP layer implementation.

Parameters tagged with the (M) notation in the comment field are mandatory parameters. Parameters tagged with the (O) notation are optional.

Data types

The SCCP service uses the following conventions for data types:

SCCP type

C implementation

Description

U8

unsigned char

unsigned 8-bit quantity

U16

unsigned short

unsigned 16-bit quantity

S16

short

signed 16-bit quantity

U32

unsigned long

unsigned 32-bit quantity

S32

long

signed 32-bit quantity