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| -rw-r--r-- | 2021/running_osmo_gsm-2021/osmo-mgw-bsc-msc.dot | 17 | ||||
| -rw-r--r-- | 2021/running_osmo_gsm-2021/osmo-mgw-bsc.dot | 10 | ||||
| -rw-r--r-- | 2021/running_osmo_gsm-2021/running-osmo-gsm.adoc | 18 | ||||
| -rw-r--r-- | 2021/running_osmo_gsm-2021/running-osmo-gsm.html | 37 |
4 files changed, 82 insertions, 0 deletions
diff --git a/2021/running_osmo_gsm-2021/osmo-mgw-bsc-msc.dot b/2021/running_osmo_gsm-2021/osmo-mgw-bsc-msc.dot new file mode 100644 index 0000000..c954717 --- /dev/null +++ b/2021/running_osmo_gsm-2021/osmo-mgw-bsc-msc.dot @@ -0,0 +1,17 @@ +digraph G { + rankdir = LR; + BTS -> BSC [label="Abis"]; + BSC -> OsmoMSC [label="3GPP AoIP"]; + OsmoMSC -> OsmoMGW [label="MGCP"]; + BSC -> OsmoMGW [label="RTP",dir=both]; + OsmoMSC -> OsmoSIP [label="MNCC"]; + OsmoSIP -> PBX [label="SIP Trunk"]; + OsmoMGW -> PBX [label="RTP",dir=both]; + {rank=same OsmoMSC OsmoMGW} + OsmoSIP [label="osmo-sip-connector"]; + OsmoMGW [color=red]; + + hNodeB -> OsmoHNBGW [label="Iuh"]; + OsmoHNBGW -> OsmoMSC [label="IuCS"]; + hNodeB -> OsmoMGW [label="RTP",dir=both]; +} diff --git a/2021/running_osmo_gsm-2021/osmo-mgw-bsc.dot b/2021/running_osmo_gsm-2021/osmo-mgw-bsc.dot new file mode 100644 index 0000000..757ca7a --- /dev/null +++ b/2021/running_osmo_gsm-2021/osmo-mgw-bsc.dot @@ -0,0 +1,10 @@ +digraph G { + rankdir = LR; + OsmoBTS -> OsmoBSC [label="Abis/IP"]; + OsmoBSC -> OsmoMSC [label="3GPP AoIP"]; + OsmoBSC -> OsmoMGW [label="MGCP"]; + OsmoBTS -> OsmoMGW [label="RTP",dir=both]; + OsmoMGW -> OsmoMSC [label="RTP",dir=both]; + {rank=same OsmoBSC OsmoMGW} + OsmoMGW [color=red]; +} 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:: diff --git a/2021/running_osmo_gsm-2021/running-osmo-gsm.html b/2021/running_osmo_gsm-2021/running-osmo-gsm.html index 31dd73e..53c3d74 100644 --- a/2021/running_osmo_gsm-2021/running-osmo-gsm.html +++ b/2021/running_osmo_gsm-2021/running-osmo-gsm.html @@ -4865,6 +4865,43 @@ interactive reference, tab-completion </div>
</div>
<div class="sect1 slide">
+<h1 id="_osmo_mgw_user_plane">osmo-mgw: User Plane</h1>
+<div class="sectionbody" style="max-width:45em">
+<ul class="">
+<li>
+<span>
+so far we’ve been looking at control plane (signalling) only
+</span>
+</li>
+<li>
+<span>
+user plane (voice in most cases) is handled via RTP in IP based Osmocom CNI
+</span>
+</li>
+<li>
+<span>
+control plane is separate from user plane
+</span>
+</li>
+<li>
+<span>
+<code>osmo-mgw</code> acts as RTP proxy, both at BSC and at MSC level
+</span>
+</li>
+</ul>
+<div class="imageblock graphviz">
+<div class="content">
+<img src="running-osmo-gsm__8.png" alt="running-osmo-gsm__8.png" />
+</div>
+</div>
+<div class="imageblock graphviz">
+<div class="content">
+<img src="running-osmo-gsm__9.png" alt="running-osmo-gsm__9.png" />
+</div>
+</div>
+</div>
+</div>
+<div class="sect1 slide">
<h1 id="_further_reading">Further Reading</h1>
<div class="sectionbody" style="max-width:45em">
<div class="dlist"><dl class="">
|