OsmoSTP » History » Revision 6
Revision 5 (laforge, 10/21/2017 03:25 PM) → Revision 6/16 (laforge, 10/21/2017 06:23 PM)
h1. OsmoSTP
The Osmocom Signal Transfer Point is a SS7 Transfer Point implementing MTP routing as well as SIGTRAN SG (Signaling Gateway) functionality.
The program is currently part of the [[libosmo-sccp:]] git repository, as it is basically just a small main loop + VTY interface wrapped around the libosmo-sigtran code.
h2. SIGTRAN protocol support
OsmoSTP supports all transport protocols implemented in [[libosmo-sigtran:]]. At time of this writing (October 2017), this includes:
* SCTP + M3UA + SCCP
* SCTP + SUA
* IPA + SCCP (experimental
We're looking for contributions/funding to add more protocols like M2UA, M2PA
h2. Position in a typical Osmocom cellular network
{{graphviz_link()
digraph G {
rankdir = LR;
BTS -> OsmoBSC [label="Abis/IP"];
hNodeB -> OsmoHNBGW [label="Iuh"];
OsmoBSC -> OsmoSTP [label="AoIP/M3UA"];
OsmoSTP -> OsmoMSC [label="AoIP/M3UA"];
OsmoSTP -> OsmoMSC [label="IuCS/M3UA"];
OsmoHNBGW -> OsmoSTP [label="IuCS/M3UA"];
OsmoHNBGW -> OsmoSTP [label="IuPS/M3UA"];
OsmoSTP -> OsmoSGSN [label="IuPS/M3UA"];
OsmoMSC -> OsmoHLR [label="GSUP"];
OsmoSGSN -> OsmoHLR [label="GSUP"];
OsmoSTP [color=red];
}
}}
h2. traffic mode support
OsmoSTP currently only implements _override_ and doesn't implement the _load-share_ or _broadcast_ traffic modes. Contributions in whatever form are welcome.
