Issue #102: Clarify RX2 in the documentation

gotthardp · May 25, 2017 · 10152e8 · 10152e8
1 parent 4147bde
commit 10152e8
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diff --git a/doc/Communication.md b/doc/Communication.md
@@ -39,6 +39,43 @@ Upon receiving a downlink frame for a given Node:
    and waits for the Node to send a next uplink. The queued *Downlinks* can
    be viewed via the [Node Administration](Nodes.md).
 
+The server uses the standard downlink frequencies and data rates. To modify the
+RX2 parameters you need to add a `regions` section into your
+`lorawan-server/releases/<VERSION>/sys.config` and modify it accordingly. The
+default values are:
+
+```erlang
+{regions, [
+    {<<"EU863-870">>, [
+        % default RX2 frequency (MHz) and data rate (DRx)
+        {rx2_rf, {869.525, <<"SF12BW125">>}}
+    ]},
+    {<<"US902-928">>, [
+        {rx2_rf, {923.3, <<"SF12BW500">>}}
+    ]},
+    % Multitech Private Hybrid Mode
+    % http://www.multitech.net/developer/software/lora/introduction-to-lora
+    {<<"US902-928-PR">>, [
+        {rx2_rf, {undefined, <<"SF12BW500">>}}
+    ]},
+    {<<"CN779-787">>, [
+        {rx2_rf, {786, <<"SF12BW125">>}}
+    ]},
+    {<<"EU433">>, [
+        {rx2_rf, {434.665, <<"SF12BW125">>}}
+    ]},
+    {<<"AU915-928">>, [
+        {rx2_rf, {923.3, <<"SF12BW500">>}}
+    ]},
+    {<<"CN470-510">>, [
+        {rx2_rf, {505.3, <<"SF12BW125">>}}
+    ]},
+    {<<"KR920-923">>, [
+        {rx2_rf, {921.9, <<"SF12BW125">>}}
+    ]}
+]},
+```
+
 ### Class B
 
 Currently not supported.