SCCP + SIGTRAN (SUA/M3UA) libraries as well as OsmoSTP
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Pau Espin 65741dca05 ipa: Fix client setting unit_id with ASP name instead of AS
This was broken since ever. The client was submitting the ASP name
 in the unit_id field during IPA handshake, and the server was
expecting it to contain the AS, so it failed with message:
"Cannot find any definition for IPA Unit Name '%s'" in

Fixes: 5f0a8df34c
Change-Id: I249964e171f578726439c40e01ae85aa447afada
2023-12-07 19:36:57 +01:00
contrib Bump version: → 1.8.0 2023-09-12 14:03:25 +02:00
debian Bump version: → 1.8.0 2023-09-12 14:03:25 +02:00
doc manuals: generate vty reference xml at build time 2021-02-23 17:20:08 +01:00
examples sccp_demo_user: Allow initiating conns from vty in server mode 2023-10-30 19:06:57 +01:00
include xua_server: asp: Support removing local addresses 2023-10-04 11:21:05 +00:00
specs add RFC 3868 (SUA) spec in HTML 2017-01-27 09:59:30 +01:00
src ipa: Fix client setting unit_id with ASP name instead of AS 2023-12-07 19:36:57 +01:00
stp {examples,stp}/ fix typo in $(COVERAGE_[C]FLAGS) 2023-03-13 10:54:34 +00:00
tests asp: Support removing local & remote addresses 2023-10-04 11:21:05 +00:00
.gitignore .gitignore: Ignore *.pyc 2023-06-08 13:57:01 +02:00
.gitreview Add gerrit settings 2016-12-21 13:46:12 +01:00
COPYING move openbsc into its own subdirectory 2009-06-10 05:40:52 +08:00 Doxugen: s/libosmo-sccp/libosmo-sigtran/g 2017-10-27 21:10:18 +02:00 EXTRA_DIST: debian, contrib/* 2020-05-22 13:29:41 +02:00 update git URLs (git -> https; gitea) 2022-06-17 23:18:23 +02:00
TODO-RELEASE port from osmo_stream_*_get_ofd() to osmo_stream_srv_get_fd() 2023-11-25 17:28:59 +01:00 Bump version: → 1.8.0 2023-09-12 14:03:25 +02:00
git-version-gen git-version-gen: Don't check for .git directory 2018-07-24 18:03:20 +02:00 Revert "Fix the .pc files so the -l arg matches the installed libraries" 2016-11-03 13:04:34 +00:00 Revert "Fix the .pc files so the -l arg matches the installed libraries" 2016-11-03 13:04:34 +00:00 libosmo-sigtran: Add pkg-config integration 2015-12-22 23:03:44 +01:00 Add missing xua.pc file 2016-11-03 12:36:41 +00:00 also test doc/examples/osmo-stp-multihome.cfg 2023-03-30 02:36:26 +07:00

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

The official homepage of osmo-stp is

GIT Repository

You can clone from the official git repository using

git clone

There is a web interface at


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

Mailing List

Discussions related to osmo-stp are happening on the mailing list, please see for subscription options and the list archive.

Please observe the Osmocom Mailing List Rules when posting.


Our coding standards are described at

We us a gerrit based patch submission/review process for managing contributions. Please see for more details

The current patch queue can be seen at