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OsmoSTP » History » Revision 5

Revision 4 (ipse, 10/12/2017 07:29 AM) → Revision 5/15 (laforge, 10/21/2017 03:25 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.
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