libosmo-sccp - Osmocom SCCP, SIGTRAN and STP

This repository contains a C-language library implementation of a variety of telecom signaling protocols, such as M3UA, SUA, SCCP (connection oriented and connectionless), as well as the OsmoSTP, a SS7 Transfer Point.


The official homepage of libosmo-sccp is https://osmocom.org/projects/libosmo-sccp/wiki

The official homepage of osmo-stp is https://osmocom.org/projects/osmo-stp/wiki

GIT Repository

You can clone from the official git repository using

git clone https://gitea.osmocom.org/osmocom/libosmo-sccp

There is a web interface at https://gitea.osmocom.org/osmocom/libosmo-sccp


User Manuals and VTY reference manuals are [optionally] built in PDF form as part of the build process.

Pre-rendered PDF version of the current "master" can be found at User Manual as well as the VTY reference manuals * VTY Reference Manual for osmo-stp

Mailing List

Discussions related to osmo-stp are happening on the openbsc@lists.osmocom.org mailing list, please see https://lists.osmocom.org/mailman/listinfo/openbsc for subscription options and the list archive.

Please observe the Osmocom Mailing List Rules when posting.


Our coding standards are described at https://osmocom.org/projects/cellular-infrastructure/wiki/Coding_standards

We us a gerrit based patch submission/review process for managing contributions. Please see https://osmocom.org/projects/cellular-infrastructure/wiki/Gerrit for more details

The current patch queue can be seen at https://gerrit.osmocom.org/#/q/project:libosmo-sccp+status:open