• Table of contents
• OsmoSGSN
  • Position in a typical Osmocom network
  • Setup / Configuration
  • Binary Packages
  • User Manuals
  • Source code
  • Test Suite
  • Contact / Getting Help
  • TODO list
• Commercial Support

OsmoSGSN¶

Serving GPRS Support Node (SGSN). As such it implements the GPRS Mobility Management (GMM) and SM (Session Management).

The SGSN implements

• the Gb interface to the BSS's (like the OsmoPCU or an ip.access nanoBTS)
• the Gp interface with its GTP protocol to one or more Gateway GPRS Support Node (GGSN) like OsmoGGSN.
• the IuPS interface with its RANAP protocol to one or more RNCs or HNB-GWs like OsmoHNBGW
• the GSUP Interface/Protocol towards OsmoHLR

OsmoSGSN is available from the https://gitea.osmocom.org/cellular-infrastructure/osmo-sgsn repository. In order to build it, you will need a libgtp installation from the OsmoGGSN project.

Position in a typical Osmocom network¶

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

Setup / Configuration¶

For more information regarding the setup + configuration, refer to OpenBSC_GPRS

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¶

• User Manual: http://ftp.osmocom.org/docs/latest/osmosgsn-usermanual.pdf
• VTY Reference: http://ftp.osmocom.org/docs/latest/osmosgsn-vty-reference.pdf

Source code¶

The source code is available from gitea.osmocom.org (module osmo-sgsn).

Public read-only access is available via

git clone https://gitea.osmocom.org/cellular-infrastructure/osmo-sgsn.git

You can browse it via gitea: https://gitea.osmocom.org/cellular-infrastructure/osmo-sgsn

Contributions are welcome via Gerrit.

Test Suite¶

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

• source code: https://gitea.osmocom.org/ttcn3/osmo-ttcn3-hacks/src/branch/master/sgsn
• results: https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-sgsn-test/

Contact / Getting Help¶

Contact us via the osmocom-net-gprs mailing list, see Mailing Lists.

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

TODO list¶

For details see the Issue tracker above. Roughly, the following areas are in need of attention:

• secondary PDP contexts
• persistent storage of GMM and SM state
• recovery from GGSN outages
• SMS delivery via GPRS
• network-initiated PDP context activation

Commercial Support¶

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