diff --git a/src/state.h b/src/state.h
new file mode 100644
index 0000000..c392a01
--- /dev/null
+++ b/src/state.h
@@ -0,0 +1,13 @@
+#ifndef OPENOLT_STATE_H_
+#define OPENOLT_STATE_H_
+
+namespace state {
+    bool is_activated();
+    bool is_connected();
+    void connect();
+    void disconnect();
+    void activate();
+    void deactivate();
+}
+
+#endif