From 5d0629e99911fba39ef5f4c65500f72da130c420 Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@osmocom.org>
Date: Wed, 29 Sep 2021 00:40:43 +0200
Subject: running-osmo-gsm: Add MGW into the picture

---
 2021/running_osmo_gsm-2021/running-osmo-gsm.adoc | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to '2021/running_osmo_gsm-2021/running-osmo-gsm.adoc')

diff --git a/2021/running_osmo_gsm-2021/running-osmo-gsm.adoc b/2021/running_osmo_gsm-2021/running-osmo-gsm.adoc
index a884d5b..a2da707 100644
--- a/2021/running_osmo_gsm-2021/running-osmo-gsm.adoc
+++ b/2021/running_osmo_gsm-2021/running-osmo-gsm.adoc
@@ -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::
-- 
cgit v1.2.3

