OpenBSC: OpenBSC syslog and logfile support

Added by laforge about 6 years ago

Today I've been working on adding support for logging via syslog and to dedicated log files into our libosmocore and libosmovty libraries.

This means you can now finally log not only to stderr of the running process, but also configure any number of log files (each with its own log categories/levels) and through syslog.

In addition, all of the settings can now be configured from the vty (and persistently in the configuration file). You can also re-configure the log levels for those files (and stderr!) at runtime.

Please see the following new commands on the vty:

log file FILENAME
log syslog
log stderr
no log (syslog|stderr)
no log file FILENAME

Within each of those log vty nodes, you can then use the familiar commands like 'logging level mm debug' or 'log filter all 1' in order to configure which subsystems should log with what level of verbosity to the given target.

The abovementioned logging support is immediately available to all Osmocom programs, including osmo-nitb, osmo-bsc, gb_proxy, osmo-sgsn, bsc_nat and many others.

OsmocomTETRA: Osmocom TETRA project goes public

Added by laforge about 6 years ago

Today, we publicly disclose the current development version of a TETRA (Terrestrial Trunked Radio) demodulator + PHY + MAC code.

The project home page, including links to source code and mailing list is ​OsmocomTETRA

After GSM and DECT, finally yet another popular wireless communications protocol will see a Free Software implementation.

OpenBSC: OpenBSC git repository URL change

Added by laforge about 6 years ago

Today, I have moved the remaining projects on git:// (aka git:// to the central git:// location.

This helps us to consolidate all our git repositories on one server.

The git URL of the main OpenBSC repository has changed from

git:// (read-only) (write)

git:// (read-only) (write)

In order to update your local repository with the new URL, simply use the git remote set-url command, like in the following examples.

for those of you with read-only access:

git remote set-url origin git://

for people with write/commit access:
git remote set-url origin

The other two repositories that have changed in similar way are openggsn.git and chan_openbsc.git.

OsmocomBB: Slides of sideband GSM sniffing talk at 27c3

Added by laforge about 6 years ago

Sylvain Munaut was presenting on Wideband GSM Sniffing at the 27th annual Chaos Communication Congress, where he was using a series of four phones running OsmocomBB as a GSM packet sniffer.

The slides are available from

A preliminary video recording (simple dump of the stream) can be found at ​from this mirror

Please note: This talk was using a lot of custom software that has not been released and is not part of OsmocomBB. For more details, read ​this mailing list post by Sylvain Munaut

OpenBSC: OpenBSC License change to AGPLv3

Added by laforge about 6 years ago

Today, the OpenBSC project announces a licensing change from GPLv2+ to AGPLv3+.

The reasoning behind this license change is simple: OpenBSC is developed as Free Software in a collaborative, community-driven process. Anyone running a GSM network using OpenBSC should be mandated to release any modifications to the OpenBSC codebase to the general public - even if the actual OpenBSC software is never distributed in the sense of the GPLv2/GPLv3.

From our point of view, the AGPL makes much more sense for software used to operate communications networks than the plain GPL. Other projects like OpenBTS have already adopted AGPLv3 in the past, following the same rationale.

For more details about the AGPL, see

If you want to use OpenBSC to operate a network and are unsure about licensing issues, please contact ​

OpenBSC: OpenBSC field test at 27c3 big success

Added by laforge about 6 years ago

The OpenBSC field test at the 27th annual Chaos Communication Congress was a huge sucess. While a full report is still being prepared, statistics from the OpenBSC-based GSM network at the event can be found at FieldTests_27c3

Lots of bugs have been discovered and fixed under the high load conditions at the event. Not all of them are part of the master branch in the git repository yet, but they will all be there soon.


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