OsmoSGSN » History » Revision 19
Revision 18 (laforge, 10/21/2017 06:22 PM) → Revision 19/28 (neels, 02/22/2018 11:02 PM)
{{>toc}} h1. [[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 [[OpenBSC:nanoBTS]]) * the Gp interface with its GTP protocol to one or more Gateway GPRS Support Node (GGSN) like [[OpenGGSN:OsmoGGSN]]. * the IuPS interface with its RANAP protocol to onre or more RNCs or HNB-GWs like [[OsmoHNBGW:]] [[OsmoSGSN:]] is available from the http://git.osmocom.org/osmo-sgsn/ repository. In order to build it, you will need a libgtp installation from the [[OpenGGSN:OsmoGGSN]] project. h2. Position in a typical Osmocom network For a more complete graph, see [[Cellular Infrastructure:Osmocom Network In The Box]] {{graphviz_link() digraph G { rankdir = LR; OsmoBTS -> OsmoBSC [label="Abis/IP"]; OsmoBSC -> OsmoMSC [label="3GPP AoIP"]; OsmoBTS -> OsmoPCU [label="pcu_sock"]; OsmoPCU -> OsmoSGSN [label="Gb/IP"]; OsmoMSC -> OsmoHLR [label="GSUP"]; OsmoSGSN -> OsmoHLR [label="GSUP"]; hNodeB -> OsmoHNBGW [label="Iuh"]; OsmoHNBGW -> OsmoMSC [label="IuCS"]; OsmoHNBGW -> OsmoSGSN [label="IuPS"]; OsmoSGSN -> OsmoGGSN [label="Gp"]; OsmoGGSN -> Internet [label="Gi"]; OsmoSGSN [color=red]; } }} h2. Setup / Configuration For more information regarding the setup + configuration, refer to [[cellular-infrastructure:OpenBSC_GPRS]] h2. Manuals * User Manual: http://ftp.osmocom.org/docs/latest/osmosgsn-usermanual.pdf * VTY Reference: http://ftp.osmocom.org/docs/latest/osmosgsn-vty-reference.pdf h2. TODO list For details see the Issue tracker above. Roughtly, 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 h2. Contact * Contact us via the osmocom-net-gprs@ mailing list, see [[Cellular Infrastructure:Mailing Lists]]. * Contributions are welcome via [[Cellular Infrastructure:Gerrit]]. * Git repository browser at https://git.osmocom.org/osmo-sgsn