This repository contains a C-language implementation of a GSM Serving GPRS Support Node (SGSN) for 2G (GSM) and 3G (UMTS). It is part of the Osmocom Open Source Mobile Communications project.
OsmoSGSN exposes * Gb towards PCUs (e.g. OsmoPCU): Various GbIP flavors + Gb/FR/E1 * GTP towards a GGSN (e.g. OsmoGGSN); * IuPS over IP towards RNCs / HNBGW (e.g. osmo-hnbgw) * The Osmocom typical telnet VTY and CTRL interfaces. * The Osmocom typical statsd exporter. * GSUP (custom MAP-like protocol) towards osmo-hlr
OsmoSGSN implements * GPRS mobility management * GPRS session management
You can clone from the official osmo-sgsn.git repository using
git clone https://gitea.osmocom.org/cellular-infrastructure/osmo-sgsn
There is a web interface at https://gitea.osmocom.org/cellular-infrastructure/osmo-sgsn
User Manuals and VTY reference manuals are [optionally] built in PDF form as part of the build process.
Discussions related to osmo-sgsn are happening on the firstname.lastname@example.org mailing list, please see https://lists.osmocom.org/postorius/lists/osmocom-net-gprs.lists.osmocom.org/ for subscription options and the list archive.
Please observe the Osmocom Mailing List Rules when posting.
Our coding standards are described at https://osmocom.org/projects/cellular-infrastructure/wiki/Coding_standards
We us a gerrit based patch submission/review process for managing contributions. Please see https://osmocom.org/projects/cellular-infrastructure/wiki/Gerrit for more details
The current patch queue for osmo-sgsn can be seen at https://gerrit.osmocom.org/#/q/project:osmo-sgsn+status:open
OsmoSGSN originated from the OpenBSC project, as a separate program within openbsc.git. In 2017, OpenBSC was split in separate repositories, and hence OsmoSGSN was given its own separate git repository.