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86	86
87	87	You should see that the newly added **MQTT Uplink converter **NB/CB is listed on the **Data Converters** page.
88	88
89		-[[image:data-converter-list-showing-uplink-dc.png]]
90	90
91	91
	91	+[[image:create-new-converter-menu.png||width="500"]]
92	92
93	93	== 3.2 Downlink ==
94	94
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95	95
96	96	On the **Data converters** page, click on the ‘**+**’ button, and then click on the **Create new converter** from the dropdown menu.
97	97
	98	+[[image:ThingsBoard-new-data-converter.png||height="282" width="500"]]
98	98
99		-[[image:create-new-converter-menu.png||width="500"]]
100	100
101		-
102		-
103	103	The **Add data converter** window will appear. Name it ‘**MQTT Downlink Converter NB/CB**’ and select the Type as **Downlink**.
104	104
105	105	Click on the **TBEL** button if not selected it by default. Now copy and paste the following encoder function written in **TBEL (ThingsBoard Expression Language)** in to the **code editor**. This encoder function is compatible for both NB and CB series devices.
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154	154	You should see that the newly added **MQTT Downlink** Converter NB/CB is listed on the **Data Converters** page.
155	155
156	156
	155	+
157	157	[[image:data-converters-list.png]]
158	158
159		-(% class="wikigeneratedid" %)
160		-
161		-
162	162	= 3. Add Integration =
163	163
164	164
165	165	In the left navigation, click **Integrations center**, and then click **Integrations**.
166	166
167		-
168		-[[image:integrations-list-empty.png]]
169		-
170		-
171	171	On the **Integrations** page, click on the '**+**' button.
172	172
	165	+[[image:data-converter-list-page.png]]
173	173
	167	+
174	174	The **Add integration** window appears.
175	175
176	176	In the **Add integration** window, configure the following settings:
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180	180
181	181	* **Integration type**: MQTT
182	182	* **Name**: MQTT integration NB/CB
183		-* **Enable integration**: YES
184		-* **Allows create devices or assets**: YES
185	185
186	186	Click **Next** button.
187	187
188		-
189		-
190	190	[[image:add-integration-basic-settings.png||height="511" width="500"]]
191	191
192	192
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197	197
198	198	Click **Next** button.
199	199
	190	+[[image:add-integration-uplink-data-converter.png||width="500"]]
200	200
201	201
202		-[[image:add-integration-uplink-data-converter.png||height="511" width="500"]]
203		-
204		-
205	205	**Downlink data converter:**
206	206
207	207	* Click on the **Select existing** button.
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209	209
210	210	Click **Next** button.
211	211
	200	+[[image:add-integration-downlink-data-converter.png||height="510" width="500"]]
212	212
213	213
214		-[[image:add-integration-downlink-data-converter.png||height="511" width="500"]]
215		-
216		-
217	217	**Connection:**
218	218
219	219	* **Host**: Cluster URL (Eg. 011731f7928541588a6cdfbbedfc63f4.s1.eu.hivemq.cloud)
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224	224	* **Password:** Password (from your HiveMQ Cloud Cluster with your credentials)
225	225	* **Topic:** tb/mqtt-integration-tutorial/sensors/+/telemetry (the + replaces any 'device name' and creates devices in the Entities -> Devices)
226	226	* **QoS:** 0-At most once
227		-
228		-
229		-[[image:add-integration-connection.png||height="511" width="500"]]
230		-
231		-
232		-Click on the **Advanced settings** button.
233		-
234	234	* **Clean session:** NO
235	235	* **Retained**: NO
236	236
237		-[[image:add-integration-connection-advanced-settings.png||height="510" width="500"]]
238		-
239		-
240	240	Click on the **Check connection** button to verify the MQTT connection using the provided parameters.
241	241
	218	+[[image:add-integration-connection.png||width="500"]]
242	242
243	243
244		-[[image:check-connection.png||height="83" width="300"]]
245		-
246		-
247	247	If the connection is successful, you will see the **Connected** message.
248	248
249		-
250		-[[image:connection-success.png||height="511" width="500"]]
251		-
252		-
253	253	Click on the **Add** button.
254	254
	225	+[[image:add-connection-success.png||height="511" width="500"]]
255	255
256	256
257	257	You should see that the newly added integration is listed on the **Integrations** page.
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271	271	{{/code}}
272	272
273	273	If the integration was performed without errors, after the transmission of the first telemetry, a new device with the name “S31B-NB” will appear in the Devices → All. Also, you can verify the input and output data, respectively, before and after conversion in Data converters → UDP Uplink Converter NB/CB → Events.
	245	+