OsmoGGSN is an implementation of the Gateway GPRS Support Node (GGSN) element in the GPRS core network.

OsmoGGSN is developed by Harald Welte, Holger Freyther, Pablo Neira and sysmocom GmbH. It is baed on the earlier OpenGGSN which was developed in 2002 to 2004 by Mondru AB and was abandoned for some years before being adopted by the Osmocom project around 2010.

Typical position in an Osmocom cellular network

For a more complete graph, see Osmocom Network In The Box

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


Source code

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

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

Support / mailing lists / Forum

Please direct any questions regarding use, configuration or development of OsmoGGSN to either

Further Reading

Commercial Support

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

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