diff --git a/TODO.md b/TODO.md
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--- /dev/null
+++ b/TODO.md
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+- (7) Application Layer:
+- (6) Presentation Layer: MOPP encoding
+- (5) Session Layer: none - port 7373
+- (4) Transport layer: UDP, connectionless
+- (3) Network layer: IP
+- (2) Data Link Layer: ...
+- (1) Physical Layer: LoRa (Radio Waves), Ethernet, ...
diff --git a/wip/cwcom.yaml b/wip/cwcom.yaml
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+++ b/wip/cwcom.yaml
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+asyncapi: '2.0.0'
+
+info:
+  title: CWCom over MQTT
+  version: '1.0.0'
+
+channels:
+  morseCode:
+    publish:
+      message:
+        $ref: '#/components/messages/MorseCodeMessage'
+
+  receiveMorseCode:
+    subscribe:
+      message:
+        $ref: '#/components/messages/MorseCodeMessage'
+
+components:
+  messages:
+    MorseCodeMessage:
+      payload:
+        type: object
+        properties:
+          command:
+            type: string
+            description: 'The command type (e.g., DAT for data).'
+          length:
+            type: integer
+            description: 'Length of the Morse code message.'
+          id:
+            type: string
+            description: 'Identifier or sender ID.'
+          sequence:
+            type: integer
+            description: 'Sequence number.'
+          code:
+            type: array
+            items:
+              type: integer
+            description: 'Array of Morse code elements.'
+          n:
+            type: integer
+            description: 'Number of elements in the Morse code array.'
+          status:
+            type: string
+            description: 'Status or version information.'
+          a21:
+            type: integer
+            description: 'Additional field.'
+          a22:
+            type: integer
+            description: 'Additional field.'
+          a23:
+            type: integer
+            description: 'Additional field.'
+          a4:
+            type: string
+            description: 'Additional field.'
+
diff --git a/wip/mopp.yaml b/wip/mopp.yaml
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index 0000000..3f3a576
--- /dev/null
+++ b/wip/mopp.yaml
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+asyncapi: 2.0.0
+info:
+  title: MOPP over MQTT
+  version: 1.0.0
+
+channels:
+  morseCode:
+    publish:
+      message:
+        payload:
+          type: string
+          description: "MOPP-encoded Morse code message."
+
+components:
+  messages:
+    MOPPMessage:
+      properties:
+        version:
+          type: string
+          description: "MOPP Protocol Version."
+        serialNumber:
+          type: integer
+          format: int32
+          description: "Serial number for packet identification."
+        speed:
+          type: integer
+          format: int32
+          description: "Speed at origin in Words per Minute (WpM)."
+        payload:
+          type: string
+          description: "MOPP-encoded Morse code payload."
+
+  schemas:
+    MOPPPacket:
+      properties:
+        protocolVersion:
+          type: string
+          description: "MOPP Protocol Version."
+        serialNumber:
+          type: integer
+          format: int32
+          description: "Serial number for packet identification."
+        speed:
+          type: integer
+          format: int32
+          description: "Speed at origin in Words per Minute (WpM)."
+        payload:
+          type: string
+          description: "MOPP-encoded Morse code payload."
+
+    MOPPPublishMessage:
+      properties:
+        message:
+          $ref: "#/components/messages/MOPPMessage"
+
diff --git a/wip/topic b/wip/topic
new file mode 100644
index 0000000..4f5da42
--- /dev/null
+++ b/wip/topic
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+moip/channel/name
+             mopp/
+moip/channel/name
+             cwcom/
+
+moip/channel/name
+             durations/
+
+moip/listchannels
+
+
+channel = mtc.kob..._wire1
+channel = udp_mopp....