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@@ -399,6 +399,24 @@ the home network, which has preference over others
* interactive reference, tab-completion
* `logging enable` adds log target to VTY session
+== osmo-mgw: User Plane
+
+* so far we've been looking at control plane (signalling) only
+* user plane (voice in most cases) is handled via RTP in IP based Osmocom CNI
+* control plane is separate from user plane
+* `osmo-mgw` acts as RTP proxy, both at BSC and at MSC level
+
+[graphviz]
+----
+include::osmo-mgw-bsc.dot[]
+----
+
+[graphviz]
+----
+include::osmo-mgw-bsc-msc.dot[]
+----
+
+
== Further Reading
User Manuals::
personal git repositories of Harald Welte. Your mileage may vary