Osmocom's Base Station Controller for 2G mobile networks https://osmocom.org/projects/osmobsc
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Michael Iedema a7628d9cf0 stats: new trackers for lchan life duration (v2) 6 days ago
contrib abis_nm: add bts model features to reported ones 4 weeks ago
debian Bump version: → 1.8.0 6 months ago
doc Add new Manual "OsmoBSC CBSP Protocol Specification" 2 weeks ago
include stats: new trackers for lchan life duration (v2) 6 days ago
m4 Drop unneeded ax_check_compile_flag.m4 5 months ago
src stats: new trackers for lchan life duration (v2) 6 days ago
tests paging: start/stop credit_timer based on C0 running 2 weeks ago
.gitignore .gitignore: remove non-existing ipaccess-firmware binary 7 months ago
.gitreview .gitreview: update repo url to new location 5 years ago
.mailmap add .mailmap file for mapping git author name/mail in shortlog 6 years ago
AUTHORS move openbsc/* to repos root 5 years ago
COPYING move openbsc/* to repos root 5 years ago
Makefile.am manuals: generate vty reference xml at build time 2 years ago
README rewrite README 5 years ago
README.vty-tests Remove obsolete ./configure option 4 years ago
TODO-RELEASE bts: Add explicit switch case for Cell Id SAI 3 months ago
configure.ac tests: Introduce paging_test 4 weeks ago
git-version-gen git-version-gen: Don't check for .git directory 4 years ago
osmoappdesc.py debian, osmoappdesc.py, tests: switch to python 3 2 years ago


About OsmoBSC

OsmoBSC originated from the OpenBSC project, which started as a minimalistic
all-in-one implementation of the GSM Network. In 2017, OpenBSC had reached
maturity and diversity (including M3UA SIGTRAN and 3G support in the form of
IuCS and IuPS interfaces) that naturally lead to a separation of the all-in-one
approach to fully independent separate programs as in typical GSM networks.

OsmoBSC was one of the parts split off from the old openbsc.git. Before, it
worked as a standalone osmo-bsc binary as well as a combination of libbsc and
libmsc, i.e. the old OsmoNITB. Since the standalone OsmoMSC with a true A
interface (and IuCS for 3G support) is available, OsmoBSC exists only as a
separate standalone entity.

OsmoBSC exposes
- A over IP towards an MSC (e.g. OsmoMSC);
- Abis interfaces towards various kinds of BTS;
- The Osmocom typical telnet VTY and CTRL interfaces.

Find OsmoBSC issue tracker and wiki online at

OsmoBSC-NAT is a specialized solution to navigating RTP streams through a NAT.
(Todo: describe in more detail)