diff --git a/doc/osmo-remsim-simple.dot b/doc/osmo-remsim-simple.dot
new file mode 100644
index 0000000..1757502
--- /dev/null
+++ b/doc/osmo-remsim-simple.dot
@@ -0,0 +1,23 @@
+digraph {
+	rankdir=LR;
+
+	subgraph cluster_0 {
+		label="Data Center";
+		SIM [shape=rect];
+		Reader [shape=rect];
+		bankd [label="remsim-bankd"];
+	}
+
+	subgraph cluster_1 {
+		label="Remote Site";
+		client [label="remsim-client"];
+		SIMtrace [label="SIMtrace2\nAPP=cardem",shape=rect];
+		Phone [label="Phone/Modem",shape=rect];
+	}
+
+	SIM -> Reader [label="ISO-7816-2/3",dir=both];
+	Reader -> bankd [label="USB CCID",dir=both];
+	bankd -> client [label="RSPRO/IPA/TCP/IP",dir=both];
+	client -> SIMtrace [label="USB",dir=both];
+	SIMtrace -> Phone [label="ISO-7816-2/3",dir=both];
+}
diff --git a/doc/osmo-remsim.dot b/doc/osmo-remsim.dot
new file mode 100644
index 0000000..c1cd911
--- /dev/null
+++ b/doc/osmo-remsim.dot
@@ -0,0 +1,58 @@
+digraph {
+	rankdir=LR;
+
+	subgraph cluster_0 {
+		label="Data Center";
+		SIM0 [shape=rect];
+		SIM1 [shape=rect];
+		SIM2 [shape=rect];
+		SIM3 [shape=rect];
+		SIM4 [shape=rect];
+		SIM5 [shape=rect];
+		SIM6 [shape=rect];
+		SIM7 [shape=rect];
+		sysmoOCTSIM [shape=rect];
+		{
+			rank=same;
+			bankd [label="remsim-bankd"];
+			server [label="remsim-server"];
+		}
+
+		SIM0 -> sysmoOCTSIM [label="ISO-7816-2/3",dir=both];
+		SIM1 -> sysmoOCTSIM [label="ISO-7816-2/3",dir=both];
+		SIM2 -> sysmoOCTSIM [label="ISO-7816-2/3",dir=both];
+		SIM3 -> sysmoOCTSIM [label="ISO-7816-2/3",dir=both];
+		SIM4 -> sysmoOCTSIM [label="ISO-7816-2/3",dir=both];
+		SIM5 -> sysmoOCTSIM [label="ISO-7816-2/3",dir=both];
+		SIM6 -> sysmoOCTSIM [label="ISO-7816-2/3",dir=both];
+		SIM7 -> sysmoOCTSIM [label="ISO-7816-2/3",dir=both];
+
+		sysmoOCTSIM -> bankd [label="USB CCID",dir=both];
+
+		bankd -> server [label="RSPRO/IPA/TCP"];
+	}
+
+	subgraph cluster_1 {
+		label="Remote Site A";
+		client1 [label="remsim-client"];
+		SIMtrace1 [label="SIMtrace2\nAPP=cardem",shape=rect];
+		Phone1 [label="Phone/Modem",shape=rect];
+		client1 -> SIMtrace1 [label="USB",dir=both];
+		SIMtrace1 -> Phone1 [label="ISO-7816-2/3",dir=both];
+		bankd -> client1 [label="RSPRO/IPA/TCP/IP",dir=both];
+		client1 -> server [label="RSPRO/IPA/TCP"];
+	}
+
+	subgraph cluster_2 {
+		label="Remote Site B";
+		client2 [label="remsim-client"];
+		SIMtrace2 [label="SIMtrace2\nAPP=cardem",shape=rect];
+		Phone2 [label="Phone/Modem",shape=rect];
+		client2 -> SIMtrace2 [label="USB",dir=both];
+		SIMtrace2 -> Phone2 [label="ISO-7816-2/3",dir=both];
+		bankd -> client2 [label="RSPRO/IPA/TCP/IP",dir=both];
+		client2 -> server [label="RSPRO/IPA/TCP"];
+	}
+
+
+}
diff --git a/doc/remote-sim.dot b/doc/remote-sim.dot
new file mode 100644
index 0000000..70f26d7
--- /dev/null
+++ b/doc/remote-sim.dot
@@ -0,0 +1,15 @@
+digraph {
+	rankdir=LR;
+	SIM [shape=rect];
+	Reader [shape=rect];
+	Computer [shape=rect];
+	ComputerB [shape=rect];
+	SIMtrace [shape=rect];
+	Phone [shape=rect];
+
+	SIM -> Reader [label="ISO-7816-2/3",dir=both];
+	Reader -> Computer [label="USB CCID",dir=both];
+	Computer -> ComputerB [label="IP based transport",dir=both];
+	ComputerB -> SIMtrace [label="USB",dir=both];
+	SIMtrace -> Phone [label="ISO-7816-2/3",dir=both];
+}