OsmoSGSN » History » Revision 12
Revision 11 (laforge, 02/21/2016 03:22 PM) → Revision 12/28 (laforge, 03/06/2016 05:24 AM)
{{>toc}} h1. [[OsmoSGSN:]] Serving GPRS Support Node (SGSN). As such it implements the GPRS Mobility Management (GMM) and SM (Session Management). The SGSN connects via the Gb-Interface to the BSS (like the [[OsmoPCU:]] or an ip.access [[OpenBSC:nanoBTS]]), and it connects via the GTP protocol to a Gateway GPRS Support Node (GGSN) like [[OpenGGSN:]]. [[OsmoSGSN:]] is part of the openbsc git repository. In order to build it, you will need a libgtp installation from the [[OpenGGSN:]] project. 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 * use the [[OsmoNITB:]] HLR to identify (and possibly authenticate) subscribers * secondary PDP contexts * persistent storage of GMM and SM state * recovery from GGSN outages * SNDCP header and data compression * use proper XID exchange and actually use the results to configure the LLC SAPIs * GEA3 encryption * SMS delivery via GPRS * network-initiated PDP context activation