OsmoBSC » History » Revision 17

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laforge, 05/11/2018 11:03 AM
test suite


OsmoBSC is an implementation of a GSM BSC (Base Station Controller), i.e. it offers
  • an A-bis interface towards the BTSs
  • an A-over-IP (AoIP) interface towards an MSC (e.g. OsmoMSC).
  • an Media Gateway Control Protocol (MGCP) interface towards a MGW (e.g. OsmoMGW for handling the RTP user plane (voice call codec frames)

History / Naming / SCCPlite

Until 2017, we used to have an osmo-bsc part of the old openbsc.git repository which implemented a smaller sub-set of the BSC functionality with an SCCPLite based A interface. This legacy program is now called osmo-bsc-sccplite and continues to be available for legacy users. However, it is not actively developed anymore.

OsmoBSC in the Osmocom architecture

Signaling Plane only

Signaling + User (Media) Plane

BTS Support

OsmoBSC supports currently all BTSs running the OsmoBTS software (such as sysmoBTS), as well as ip.access nanoBTS devices. Other Abis/IP devices may be supported.

Support for legacy E1/T1 TDM based BTSs (like those supported by OsmoNITB is on the roadmap.

Binary Packages

Osmocom provides binary packages for several flavors of Debian and Ubuntu GNU/Linux on a variety of architectures (i586, x86_64, armhf, armv7l). Unless you are a software developer interested in developing on Osmocom, it is recommended you use those packages instead of building from source.

For more details see Binary_Packages

User Manuals

Source code

The source code is available from (module osmo-bsc).

Public read-only access is available via

git clone git://

You can browse it via cgit:

Contributions are welcome via [[Cellular Infrastructure:Gerrit]].

Test Suite

We have a TTCN-3 test suite as part of our Titan_TTCN3_Testsuites

Contact / Getting Help

Contact us via the openbsc@ mailing list, see [[Cellular Infrastructure:Mailing Lists]].

You can file issues (bugs / feature requests) using the redmine project you're currently viewing.

Authors / Credit

The old OsmoBSC-SCCPlite was created by Holger Freyther based on the earler OpenBSC/OsmoNITB code by Dieter Spaar, Harald Welte, Holger Freyther and contributors.

3GPP AoIP support was developed by sysmocom. Today, OsmoBSC is maintained by Harald Welte and his team at sysmocom.

Updated by laforge over 3 years ago · 17 revisions

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