Ukraine We stand with Ukraine

OSS® 5G & LTE/EPC Product Documentation

Welcome to the OSS 5G & LTE Product Documentation. This section is an essential resource for 5G and LTE application developers who want to learn how to quickly create user applications that produce, encode, decode, and process messages that conform to the 3GPP TS 24.501 and 3GPP TS 24.301 (Non-Access-Stratum protocol for 5G and LTE), 3GPP TS 36.455 (LPPa), 3GPP TS 36.413 (S1AP), and 3GPP TS 36.423 (X2AP) protocols.

To go directly to a particular Product Documentation section, use the following links:

OSS NAS Tools for C
OSS NAS Tools for C++
OSS NAS Tools for C++ Add-on to the OSS ASN.1 Tools for C++
OSS NAS Tools for Java
OSS NAS Tools for C#
OSS NAS Tools for Python
OSS NAS-1Step

This documentation applies to previous versions of our products. pdf indicates a manual in PDF format.

OSS NAS Tools for C
OSS NAS Tools for C++
OSS NAS Tools for Java
OSS NAS Tools for C#
OSS NAS Tools for Python
OSS NAS-1Step

Syntax Conventions

The following table lists and describes the syntax conventions that apply to all sections of the OSS Product Documentation:

Convention Description
variable Indicates placeholders.
default Indicates defaults.
[ ] Indicates optional items.
| Indicates alternative items.
... Indicates that preceding syntax items may be repeated.

Copyright © 2025 OSS Nokalva, Inc. All rights reserved.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical, photocopying, recording or otherwise, without the prior permission of OSS Nokalva, Inc.
Every distributed copy of OSS Nokalva software is associated with a specific license and related unique license number. That license determines, among other things, what functions of the OSS Nokalva software are available to you.