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1	1	**Table of Contents：**
2	2
3	3	{{toc/}}
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21	21	[[image:image-20220527153544-2.png]]
22	22
23	23
	26	+
24	24	= **2. How to Debug if Cellular connection fails** =
25	25
26	26
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27	27	//If there is a problem with the cellular connection. Please check the below points~://
28	28
29	29
	33	+
30	30	== **2.1 Do you order the model with a cellular option** ==
31	31
32	32
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43	43	[[image:image-20220601110748-1.png]]
44	44
45	45
	50	+
46	46	== **2.2 Do you input the SIM card correctly** ==
47	47
48	48
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66	66
67	67
68	68	(% class="wikigeneratedid" %)
69		-//**Note:** If the icon is missing some information, like SIM, Network, or Signal, which may be due to the display bug.//
	74	+//**​​(% style="color:red" %)Note:(%%)**(% style="color:red" %) **If the icon is missing some information, like SIM, Network, or Signal, which may be due to the display bug.**//
70	70
71	71	(% class="wikigeneratedid" %)
72	72	//Please check the IP address is displayed and the Internet displays "OK", it works properly.//
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75	75	[[image:image-20220527153827-5.png]]
76	76
77	77
	83	+
78	78	== **2.3 Check dialing info** ==
79	79
	86	+
80	80	//run "**logread -f**" in gateway CLI。//
81	81
82	82	(% class="box" %)
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120	120	)))
121	121
122	122
	130	+
123	123	== **2.4 If the following situation occurs, how can users solve this problem?** ==
124	124
125	125
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130	130
131	131	//Regarding what APN your SIM card should use, Users can search for the APN corresponding to the SIM card by Google or ask the carrier.//
132	132
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133	133	[[image:image-20220718155937-1.png||height="562" width="497"]]
134	134
135	135
	145	+
136	136	=== **2.4.2 The gateway can read the SIM card, But the Internet is displayed as Fail, and at the same time Network displays the carrier network.** ===
137	137
138	138
139	139	//It should be SIM card no flow, users can insert SIM cards into the mobile phone for testing.//
140	140
	151	+
141	141	[[image:1658131428288-728.png||height="538" width="494"]]
142	142
143	143
	155	+
144	144	=== **2.4.3 The gateway can't read the SIM card, and the Internet is displayed as Fail.** ===
145	145
146	146
147	147	//Users need to check whether the SIM card type is suitable for the EC25 module.//
148	148
	161	+
149	149	[[image:1658131612484-845.png||height="549" width="499"]]
150	150
151	151
	165	+
152	152	=== **2.4.4 SIM display：~*~**SIM ERROR~*~** Check SIM is inserted test SIM in a mobile phone？** ===
153	153
154	154
155	155	//Users can insert SIM cards into the mobile phone for testing.//
156	156
	171	+
157	157	[[image:image-20220718160804-3.png||height="602" width="500"]]
158	158
	174	+
	175	+
159	159	= **3. Share Cellular Network for WiFi & LAN clients** =
160	160
161	161
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212	212
213	213	**Enable Cellular and connect Ethernet at the same time**
214	214
215		-ETH icon is displayed as ​​​ [[image:1658135519305-444.png]] Indicates that Ethernet is the main working network.
	232	+ETH icon is displayed as ​​​ [[image:1658135519305-444.png||height="18" width="19"]] Indicates that Ethernet is the main working network.
216	216
217		-Cell icon is displayed as  [[image:1658135500498-725.png]] Indicates that Cellular is the backup WAN.
	234	+Cell icon is displayed as  [[image:1658135500498-725.png||height="17" width="17"]] Indicates that Cellular is the backup WAN.
218	218
219	219
	237	+(% style="display:none" %) (%%)
	238	+
220	220	== **4.1 Switching between Cellular and Ethernet networks** ==
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222	222
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229	229
230	230	[[image:image-20220606140859-4.png||height="687" width="1107"]]
231	231
	251	+(% style="display:none" %) (%%)
232	232
	253	+
233	233	== **4.2 Switching between Cellular and WiFi networks** ==
234	234
235	235
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236	236	(% class="wikigeneratedid" %)
237	237	//Enable **Cellular** and connect **WiFi** at the same time//
238	238
239		-//WiFi icon is displayed as ​​​//[[image:1658135519305-444.png]]// Indicates that WiFi is the main working network.//
	260	+//WiFi icon is displayed as ​​​//[[image:1658135519305-444.png||height="23" width="24"]] Indicates that WiFi is the main working network.
240	240
241		-//Cell icon is displayed as  //[[image:1658135500498-725.png]]// Indicates that Cellular is the backup WAN.//
	262	+//Cell icon is displayed as  //[[image:1658135500498-725.png||height="23" width="22"]]// Indicates that Cellular is the backup WAN.//
242	242
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243	243	[[image:image-20220606141113-7.png||height="678" width="1106"]]
244	244
245	245
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248	248	[[image:image-20220606140932-5.png||height="687" width="1107"]]
249	249
250	250
	273	+
251	251	== **4.3 At the same time start Cellular and Ethernet and Wi-Fi networks** ==
252	252
253	253
254	254	[[image:image-20220606140328-1.png||height="682" width="1108"]]
255	255
	279	+
256	256
257	257	)))
258	258
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269	269
270	270	(% class="box infomessage" %)
271	271	(((
272		-root@dragino-1ef9ac:~~# minicom -s
	296	+**root@dragino-1ef9ac:~~# minicom -s**
273	273	)))
274	274
275	275	[[image:image-20220527154132-6.png]]
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279	279
280	280	(% class="box infomessage" %)
281	281	(((
282		-(% style="color:black" %)**Serial Device :** (% style="color:#037691" %)**/dev/ttyModemAT**
	306	+**Serial Device :** (% style="color:#037691" %)**/dev/ttyModemAT**
283	283
284		-(% style="color:black" %)**Bps/Par/Bits :**(% style="color:#037691" %)** 9600 8N1**
	308	+**Bps/Par/Bits :(% style="color:#037691" %) 9600 8N1(%%)**
285	285	)))
286	286
287	287
288		-//**Note: Enter the corresponding letter to change the configuration, like A,B,C**//
	312	+(% style="color:red" %)//**Note: Enter the corresponding letter to change the configuration, like A,B,C**//
289	289
290	290	[[image:image-20220527154154-7.png]]
291	291
292	292
293		-//Enter **AT+GSN **in the interface to get the IMEI,//
	317	+(((
	318	+//Enter (% style="color:blue" %)**AT+GSN **(%%)in the interface to get the IMEI,//
	319	+)))
294	294
295		-// **For example (% style="color:#037691" %)860548042566627(%%)**//
	321	+(((
	322	+//**For example: (% style="color:#037691" %)860548042566627(%%)**//
	323	+)))
296	296
297	297	(% class="box infomessage" %)
298	298	(((
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304	304	[[image:image-20220527154231-8.png]]
305	305
306	306
	335	+
307	307	= **6. How does the gateway connect to the network via a USB 4G Dongle** =
308	308
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327	327
328	328	//For more information: [[https:~~/~~/openwrt.org/docs/guide-user/network/wan/wwan/3gdongle>>url:https://openwrt.org/docs/guide-user/network/wan/wwan/3gdongle]]//
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330	330
331	331	)))
332	332
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350	350	)))
351	351
352	352
	383	+
353	353	== **6.3 Hilink mode** ==
354	354
355	355
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356	356	//Gateway upgrade to the specified firmware:[[Hilink.mode~~-~~-build-v5.4.1625627505>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LG308-LG301/Firmware/USB-Dongle_firmware/Hilink.mode--build-v5.4.1625627505-20210707-1113/]]//
357	357
358	358
	390	+
359	359	=== **6.3.1 Plugs into the device** ===
360	360
361	361
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374	374	[[image:image-20220527154739-9.png]]
375	375
376	376
	409	+
377	377	=== **6.3.2 Detection of new network interfaces added** ===
378	378
379	379
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382	382	(% class="box infomessage" %)
383	383	(((
384	384	(((
385		- root@dragino-1ef9ac:~~# ifconfig -a
	418	+**~ root@dragino-1ef9ac:~~# ifconfig -a**
386	386	)))
387	387	)))
388	388
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393	393	//Usually, the user can see that the new interface added is (% style="color:#037691" %)**eth2** (% style="color:black" %)or (% style="color:#037691" %)**wwan0**//
394	394
395	395
	429	+
396	396	=== **6.3.3 Add the new interface to the network configuration.** ===
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421	421	//Now, Gateway is configured to access the internet on the LTE network.//
422	422
423	423
	458	+
424	424	== **6.4 NCM mode** ==
425	425
426	426
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433	433	//Please try this USB dongle to access the internet on your PC, to make sure this USB dongle can normally access the internet.//
434	434
435	435
	471	+
436	436	= **7. How to reduce data traffic** =
437	437
438	438
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449	449	[[image:image-20220527155108-13.png]]
450	450
451	451
	488	+
452	452	//2. There is the data traffic from the gateway check self-network status. by default, the gateway will check the network per 15s.//
453	453
454	454	//For this case, We have monitored the loss of data traffic, which is the loss of 2M data traffic per day. the users can adjust the interval time following screenshots.//
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463	463	//Keepalive script interval time settings//
464	464
465	465
	503	+
466	466	== **7.2 Filter unwanted packets** ==
467	467
	506	+
468	468	See [[How to filter unwanted packets>>doc:Main.Filter unwanted LoRaWAN packets.WebHome]]
469	469
470	470