Osmocom library for A-bis (E1/IP) interface
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Harald Welte 247e52141f dahdi: Fix compilation with ancient DAHDI
We had an #ifndef DAHDI_SPECIFY clause which clearly wouldn't compile
as it used a wrong variable name.  Apparently nobody is building against
such ancient DAHDI for a long time...

Change-Id: Ib18343c0914ef25e673b930fa86b2dec6129065d
2023-09-17 12:32:54 +02:00
contrib Bump version: → 1.5.0 2023-09-12 13:39:09 +02:00
debian Bump version: → 1.5.0 2023-09-12 13:39:09 +02:00
include trau_sync: Add sync pattern for FA protocol of 3GPP TS 43.045 2023-06-13 08:58:10 +02:00
m4 add missing m4 directory 2011-06-05 18:36:27 +02:00
src dahdi: Fix compilation with ancient DAHDI 2023-09-17 12:32:54 +02:00
tests trau_pcu_ericsson: add testvectors for MCS1-MCS8 2023-02-27 10:32:43 +01:00
.gitignore .gitignore: add new trau_{pcu_ericsson,sync} tests 2023-05-05 23:08:34 +07:00
.gitreview Add gerrit settings 2016-12-22 14:06:57 +00:00
AUTHORS add AUTHORS and COPYING files 2011-07-02 17:42:31 +02:00
COPYING add AUTHORS and COPYING files 2011-07-02 17:42:31 +02:00
Makefile.am Makefile.am: EXTRA_DIST: debian, contrib/*.spec.in 2020-05-22 13:27:37 +02:00
README.md update git URLs (git -> https; gitea) 2022-06-17 23:12:04 +02:00
TODO-RELEASE Bump version: → 1.5.0 2023-09-12 13:39:09 +02:00
configure.ac Bump version: → 1.5.0 2023-09-12 13:39:09 +02:00
git-version-gen git-version-gen: Check first for new tag format 2018-05-02 19:36:36 +02:00
libosmoabis.pc.in pkgconf: require libosmocore 2022-08-10 16:19:12 +07:00
libosmotrau.pc.in pkgconf: require libosmocore 2022-08-10 16:19:12 +07:00


libosmo-abis - Osmocom Abis interface library

This repository contains a set of C-language libraries that form the A-bis interface library of Osmocom Open Source Mobile Communications projects such as OpenBSC / OsmoBSC.

Historically, a lot of this code was developed as part of the OpenBSC project, but which are of a more generic nature and thus useful to (at least) other programs that we develop in the sphere of Free Software / Open Source mobile communications.

The libosmo-abis.git repository build multiple libraries:

  • libosmoabis contains some abstraction layer over E1/T1 and IP based ETSI/3GPP A-bis interface. It can use mISDN and DAHDI as underlying driver/hardware.
  • libosmotrau contains routines related to A-bis TRAU frame handling


The official homepage of the project is https://osmocom.org/projects/libosmo-abis

GIT Repository

You can clone from the official libosmo-abis.git repository using

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

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


There is no Doxygen-generated API documentation yet for this library. It would be great to some day have it, comparable to libosmocore.

Mailing List

Discussions related to libosmo-abis 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 for libosmo-abis can be seen at https://gerrit.osmocom.org/#/q/project:libosmo-abis+status:open