diff --git a/resources/translations/Application.de.translation b/resources/translations/Application.de.translation
index 840d496..e50b11c 100644
--- a/resources/translations/Application.de.translation
+++ b/resources/translations/Application.de.translation
@@ -111,6 +111,7 @@ Height : Höhe
 Help : Hilfe
 (id\: {}, length\: {}) : (Id: {}, Länge: {})
 if ({})\: : falls ({}):
+internal contacts : interne Kontakte
 inverted : invertiert
 Inverts the direction {} is heading to. : Kehrt die Richtung, in welche {} fährt, um.
 {} is oriented {} : {} ist {} gerichtet
@@ -137,6 +138,7 @@ Minimum and maximum times (in Miliseconds) trains with the respective tag have t
 Move tiles : Kacheln verschieben
 name\: : Name:
 new car : neuer Waggon
+new contact : neuer Kontakt
 new locomotive : neue Lok
 new tag : neue Markierung
 new train : neuer Zug
diff --git a/src/main/java/de/srsoftware/web4rail/Plan.java b/src/main/java/de/srsoftware/web4rail/Plan.java
index ecb548c..3845f7b 100644
--- a/src/main/java/de/srsoftware/web4rail/Plan.java
+++ b/src/main/java/de/srsoftware/web4rail/Plan.java
@@ -163,6 +163,9 @@ public class Plan extends BaseClass{
 		switch (params.get(ACTION)) {
 		case ACTION_ADD:
 			return addTile(params.get(TILE),params.get(X),params.get(Y),null);
+		case Block.ACTION_ADD_CONTACT:
+			Block block = get(Id.from(params));
+			return block.addContact();
 		case ACTION_ANALYZE:
 			return analyze();
 		case ACTION_AUTO:
@@ -702,6 +705,7 @@ public class Plan extends BaseClass{
 				contact.addr(0);
 				LOG.debug("unsibscribed {} from {}",contact,addr);
 			}
+			
 			stream(learningContact.addr(addr).properties().toString());
 			LOG.debug("learned: {} = {}",addr,learningContact);			
 			learningContact = null;
diff --git a/src/main/java/de/srsoftware/web4rail/tiles/Block.java b/src/main/java/de/srsoftware/web4rail/tiles/Block.java
index 26c724e..1c5ea32 100644
--- a/src/main/java/de/srsoftware/web4rail/tiles/Block.java
+++ b/src/main/java/de/srsoftware/web4rail/tiles/Block.java
@@ -38,9 +38,11 @@ public abstract class Block extends StretchableTile{
 	public static final String TAG = "tag";
 	private static final String WAIT_TIMES = "wait_times";
 	private static final String RAISE = "raise";
+	public static final String ACTION_ADD_CONTACT = "add_contact";
 
 	public String  name        = "Block";
 	public boolean turnAllowed = false;
+	private Vector<BlockContact> internalContacts = new Vector<BlockContact>();
 	
 	public Block() {
 		super();
@@ -120,6 +122,12 @@ public abstract class Block extends StretchableTile{
 
 	
 	private Vector<WaitTime> waitTimes = new Vector<WaitTime>();
+
+	public Object addContact() {
+		BlockContact contact = new BlockContact(this);
+		plan.learn(contact);
+		return t("Trigger contact to learn new contact");
+	}
 	
 	@Override
 	public Object click() throws IOException {
@@ -138,6 +146,19 @@ public abstract class Block extends StretchableTile{
 		return config;
 	}
 	
+	private Fieldset contactForm() {
+		Fieldset fieldset = new Fieldset("internal contacts");
+		this.button("new contact", Map.of(ACTION,ACTION_ADD_CONTACT)).addTo(fieldset);
+		if (!internalContacts.isEmpty()) {
+			Tag ul = new Tag("ul");
+			for (BlockContact contact : internalContacts) {
+				new Tag("li").content(contact.toString()).addTo(ul);
+			}
+			ul.addTo(fieldset);
+		}
+		return fieldset;
+	}
+	
 	public abstract Direction directionA();
 	public abstract Direction directionB();
 	
@@ -217,7 +238,8 @@ public abstract class Block extends StretchableTile{
 		formInputs.add(t("Name"),new Input(NAME, name));
 		formInputs.add("",new Checkbox(ALLOW_TURN,t("Turn allowed"),turnAllowed));
 		formInputs.add(t("Train"),Train.selector(train, null));
-		postForm.add(waitTimeForm());
+		postForm.add(contactForm());
+		postForm.add(waitTimeForm());		
 		return super.properties(preForm, formInputs, postForm);
 	}
 			
@@ -232,6 +254,11 @@ public abstract class Block extends StretchableTile{
 		}
 		return this;
 	}
+
+	public BlockContact register(BlockContact contact) {
+		internalContacts.add(contact);
+		return contact;
+	}
 	
 	public static Select selector(Block preselected,Collection<Block> exclude) {
 		if (isNull(exclude)) exclude = new Vector<Block>();
@@ -397,5 +424,4 @@ public abstract class Block extends StretchableTile{
 		
 		return win;
 	}
-
 }
diff --git a/src/main/java/de/srsoftware/web4rail/tiles/BlockContact.java b/src/main/java/de/srsoftware/web4rail/tiles/BlockContact.java
new file mode 100644
index 0000000..e0b70ff
--- /dev/null
+++ b/src/main/java/de/srsoftware/web4rail/tiles/BlockContact.java
@@ -0,0 +1,33 @@
+package de.srsoftware.web4rail.tiles;
+
+import de.srsoftware.web4rail.Window;
+
+public class BlockContact extends Contact {
+	
+	public BlockContact(Block parent) {
+		parent(parent);
+	}
+	
+	@Override
+	public Contact addr(int address) {
+		super.addr(address);
+		Block block = (Block) parent(); 
+		return block.register(this);		
+	}
+
+	@Override
+	public Id id() {
+		if (id == null) id = new Id();
+		return id;
+	}
+	
+	@Override
+	public Window properties() {
+		return parent().properties();
+	}
+	
+	@Override
+	public String toString() {
+		return getClass().getSimpleName()+"("+addr+")";
+	}
+}
diff --git a/src/main/java/de/srsoftware/web4rail/tiles/Contact.java b/src/main/java/de/srsoftware/web4rail/tiles/Contact.java
index 605974e..0e19c71 100644
--- a/src/main/java/de/srsoftware/web4rail/tiles/Contact.java
+++ b/src/main/java/de/srsoftware/web4rail/tiles/Contact.java
@@ -25,7 +25,7 @@ public class Contact extends Tile{
 	private static final HashMap<Integer, Contact> contactsByAddr = new HashMap<Integer, Contact>();
 	private boolean state = false;
 	private String trigger = null;
-	private int addr = 0;
+	protected int addr = 0;
 	private ActionList actions;
 	private OffTimer timer = null;