OsmoSGSN » History » Revision 7
Revision 6 (laforge, 02/19/2016 10:48 PM) → Revision 7/28 (laforge, 02/19/2016 10:48 PM)
{{>toc}} h1. [[OsmoSGSN]] <pre> [[PageOutline]] = OsmoSGSN = OsmoSGSN (also spelled {{{osmo-sgsn}}} when referring to the program name) is a Free Software implementation of the GPRS 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 [[osmo-pcu]] [wiki:osmo-pcu] or an ip.access nanoBTS), and it connects via the GTP protocol to a Gateway GPRS Support Node (GGSN) like [[OpenGGSN]]. [wiki:OpenGGSN]. [[OsmoSGSN]] OsmoSGSN is part of the openbsc git repository. In order to build it, you will need a libgtp installation from the [[OpenGGSN]] OpenGGSN project. h2. == Setup / Configuration == For more information regarding the setup + configuration, refer to [[OpenBSC_GPRS]] h2. [wiki:OpenBSC_GPRS] == TODO list == * use the [[OsmoNITB]] 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