This is the upcoming Osmocom Cell Broadcast Centre.


You can find more information about Cell Broadcast in general at Cell_Broadcast and Service_Area_Broadcast, as well as Emergency_Warning and Public_Warning_System. The pages include pointers to the relevant specifications.

Position in the network

The below graph shows the CBC in the network.

As can be seen, the CBC receives messages from third-party applications (called CBEs). It then routes/distributes/forwards those messages over the respective radio access technology specific method.


OsmoCBC was originally developed in 2019 under a so-called prototype fund grant of the German Federal Ministry of Education and Research.

In August 2022, osmo-cbc was extended with support for LTE/4G by introducing the SBcAP interface, under a grant of the NLnet foundation

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


See also the Quick_SMSCB_HOWTO

Source Code

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

Public read-only access is available via

git clone

You can browse it via gitea:

Contributions are welcome via Gerrit.

Test Suite

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


  • Contact us via the openbsc@ mailing list, see Mailing Lists.
  • Contributions are welcome via Gerrit.

Commercial Support

Commercial support as well as development, system integration and training services for this project are available from sysmocom

Updated by laforge over 1 year ago ยท 12 revisions

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