The NAS Encode/Decode API supports encoding and decoding 3GPP Layer 3 messages. These messages are described in the following 3GPP technical specifications:
TS 24.007 - Mobile radio interface signaling layer 3; General Aspects
TS 24.008 - Mobile radio interface Layer 3 specification; Core network protocols; Stage 3
TS 24.301 - Universal Mobile Telecommunications System (UMTS); LTE; 5G; Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3
TS 24.501 - 5G; Non-Access Stratum (NAS) protocpol for 5G System (5GS); Stage 3
This document explains how to use this API using the add-on package available for the ASN1C Compiler, or the standalone packages.