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15	15
16	16	= 1.  Introduction =
17	17
18		-
19	19	== 1.1 ​ What is NDS03A NB-IoT Open/Close Door Sensor ==
20	20
21	21
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176	176
177	177	= 2.  Use CPN01 to communicate with IoT Server =
178	178
179		-
180	180	== 2.1  How it works ==
181	181
182	182
183		-The CPN01 is equipped with an NB-IoT module, the pre-loaded firmware in CPN01 will get (% style="color:blue" %)**Open/Close Event or Count**(%%) from sensor and send the value to the NB-IoT network. The NB-IoT network will forward this value to IoT server via the protocol defined by CPN01.
	181	+In this user case, the NDS03A is installed on the door edge to detect the open/close event and send the status to the NB-IoT server. The NB-IoT network will forward this value to IoT server via the protocol defined by NDS03A.
184	184
185		-The diagram below shows the working flow in the default firmware of CPN01:
	183	+The diagram below shows the working flow in the default firmware of NDS03A:
186	186
187	187	[[image:image-20221021110615-5.png]]
188	188
189	189
190	190
191		-== 2.2 ​ Configure CPN01 ==
	189	+== 2.2 ​ Configure NDS03A ==
192	192
193		-
194	194	=== 2.2.1 Test Requirement ===
195	195
196	196
197		-To use CPN01 in your city, make sure to meet below requirements:
	194	+To use NDS03A in your city, make sure to meet below requirements:
198	198
199	199	* Your local operator has already distributed an NB-IoT Network.
200		-* The local NB-IoT network used the band that CPN01 supports.
	197	+* The local NB-IoT network used the band that NDS03A supports.
201	201	* Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
202	202
203		-Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.  The CPN01 will use** (% style="color:red" %)CoAP(120.24.4.116:5683)(%%)** or raw (% style="color:red" %)**UDP(120.24.4.116:5601) **(%%)or (% style="color:red" %)**MQTT(120.24.4.116:1883) **(%%)or (% style="color:red" %)**TCP(120.24.4.116:5600)protocol**(%%) to send data to the test server.
	200	+Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.  The NDS03A will use** (% style="color:red" %)CoAP(120.24.4.116:5683)(%%)** or raw (% style="color:red" %)**UDP(120.24.4.116:5601) **(%%)or (% style="color:red" %)**MQTT(120.24.4.116:1883) **(%%)or (% style="color:red" %)**TCP(120.24.4.116:5600)protocol**(%%) to send data to the test server.
204	204
205		-[[image:image-20221023000439-3.png]]
	202	+[[image:image-20221117142300-1.png]]
206	206
207	207	​
208	208
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218	218
219	219
220	220
221		-=== 2.2.3 Connect USB – TTL to CPN01 and configure it ===
	218	+=== 2.2.3 Connect USB – TTL to NDS03A and configure it ===
222	222
223	223
224		-User need to configure CPN01 via serial port to set the (% style="color:red" %)**Server Address** / **Uplink Topic**(%%) to define where and how-to uplink packets. CPN01 support AT Commands, user can use a USB to TTL adapter to connect to CPN01 and use AT Commands to configure it, as below.
	221	+User need to configure NDS03A via serial port to set the (% style="color:red" %)**Server Address** / **Uplink Topic**(%%) to define where and how-to uplink packets. NDS03A support AT Commands, user can use a USB to TTL adapter to connect to NDS03A and use AT Commands to configure it, as below.
225	225
226	226	(% style="color:blue" %)**Connection:**
227	227
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244	244
245	245	* Flow Control: (% style="color:red" %)**None**
246	246
247		-Make sure the switch is in FLASH position, then power on CPN01 by connecting the (% style="color:orange" %)**Yellow Jumper**(%%).
	244	+Make sure the switch is in FLASH position, then power on NDS03A by connecting the (% style="color:orange" %)**Yellow Jumper**(%%).
248	248
249	249	​[[image:image-20221021110817-7.png]]
250	250
251		-CPN01 will output system info once powered on as below, we can enter the **password: 12345678** to access AT Command input.
	248	+NDS03A will output system info once powered on as below, we can enter the **password: 12345678** to access AT Command input.
252	252
253	253
254	254	(% style="color:red" %)**Note: the valid AT Commands can be found at:  **(%%)[[**https:~~/~~/www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0**>>url:https://www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0]]
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274	274	[[image:image-20221021110948-8.png]]
275	275
276	276
277		-After configuring the server address and (% style="color:green" %)**reset CPN01**(%%) (via AT+ATZ ), CPN01 will start to uplink sensor values to the CoAP server.
	274	+After configuring the server address and (% style="color:green" %)**reset CPN01**(%%) (via AT+ATZ ), NDS03A will start to uplink sensor values to the CoAP server.
278	278
279	279	[[image:image-20221021110956-9.png]] ​
280	280
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350	350
351	351	User can use below command to change the (% style="color:blue" %)**uplink interval**.
352	352
353		-* (% style="color:#037691" %)**AT+TDC=7200      ** (%%) ~/~/ Set Update Interval to 7200s (2 hours)
	350	+* (% style="color:#037691" %)**AT+TDC=14400      ** (%%) ~/~/ Set Update Interval to 14400s (4 hours)
354	354
355	355	(% style="color:red" %)**NOTE:**
356	356
357		-1.  By default, the device will send an uplink message every 1 hour.
	354	+1.  By default, the device will send an uplink message every 4 hour.
358	358
359	359
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