Wiki source code of Cellular network connection details and tips
Version 80.1 by Kilight Cao on 2023/03/13 10:51
Show last authors
author | version | line-number | content |
---|---|---|---|
1 | |||
2 | |||
3 | **Table of Contents:** | ||
4 | |||
5 | {{toc/}} | ||
6 | |||
7 | |||
8 | |||
9 | = **1. Enable Cellular Connection** = | ||
10 | |||
11 | |||
12 | //If your device has a Cellular module, you can see the below screenshot. enable the cellular connection here.// | ||
13 | |||
14 | [[image:image-20220601110850-2.png]] | ||
15 | |||
16 | **//Enable Cellular Connection//** | ||
17 | |||
18 | |||
19 | ((( | ||
20 | //If your device doesn't have a cellular module, you will see a cellular module not detected.// | ||
21 | ))) | ||
22 | |||
23 | [[image:image-20220527153544-2.png]] | ||
24 | |||
25 | |||
26 | |||
27 | = **2. How to Debug if Cellular connection fails** = | ||
28 | |||
29 | |||
30 | //If there is a problem with the cellular connection. Please check the below points~:// | ||
31 | |||
32 | |||
33 | |||
34 | == **2.1 Do you order the model with a cellular option** == | ||
35 | |||
36 | |||
37 | //Make sure you order the model with the cellular option. Can check by command or via the Web UI.// | ||
38 | |||
39 | (% class="box" %) | ||
40 | ((( | ||
41 | //root@dragino-1bbd90:~~# lsusb | ||
42 | Bus 001 Device 004: ID 2c7c:0125 ~-~-> This is the Cellular module | ||
43 | Bus 001 Device 002: ID 1a40:0101 Terminus Technology Inc. Hub | ||
44 | Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub// | ||
45 | ))) | ||
46 | |||
47 | [[image:image-20220601110748-1.png]] | ||
48 | |||
49 | |||
50 | |||
51 | == **2.2 Do you input the SIM card correctly** == | ||
52 | |||
53 | |||
54 | **//Below command can check if you have a SIM card inserted, or via Web UI//** | ||
55 | |||
56 | * //Make sure to Power Off when you insert the SIM card and power on the device. The device doesn't support auto-detect SIM card on power on// | ||
57 | * //Make sure you have the correct direction to insert the SIM card. Every device has an example photo in the manual for the direction.// | ||
58 | |||
59 | (% class="box" %) | ||
60 | ((( | ||
61 | //root@dragino-1dadd8:~~# **comgt -d /dev/ttyUSB3** | ||
62 | SIM ready | ||
63 | Waiting for Registration..(120 sec max) | ||
64 | Registered on Home network: "CHN-UNICOM",7 | ||
65 | Signal Quality: 10,99// | ||
66 | ))) | ||
67 | |||
68 | |||
69 | (% class="wikigeneratedid" %) | ||
70 | [[image:image-20220527153804-4.png]] | ||
71 | |||
72 | |||
73 | (% class="wikigeneratedid" %) | ||
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.**// | ||
75 | |||
76 | (% class="wikigeneratedid" %) | ||
77 | //Please check the IP address is displayed and the Internet displays "OK", it works properly.// | ||
78 | |||
79 | (% class="wikigeneratedid" %) | ||
80 | [[image:image-20220527153827-5.png]] | ||
81 | |||
82 | |||
83 | |||
84 | == **2.3 Check dialing info** == | ||
85 | |||
86 | |||
87 | //run "**logread -f**" in gateway CLI。// | ||
88 | |||
89 | (% class="box" %) | ||
90 | ((( | ||
91 | Fri Feb 7 01:20:28 2020 daemon.notice pppd[29452]: pppd 2.4.7 started by root, uid 0 | ||
92 | Fri Feb 7 01:20:29 2020 user.notice iot_keep_alive: Ping WAN | ||
93 | Fri Feb 7 01:20:29 2020 user.notice iot_keep_alive: Default interface is | ||
94 | Fri Feb 7 01:20:29 2020 user.notice iot_keep_alive: No internet at any interface | ||
95 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: abort on (BUSY) | ||
96 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: abort on (NO CARRIER) | ||
97 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: abort on (ERROR) | ||
98 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: report (CONNECT) | ||
99 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: timeout set to 10 seconds | ||
100 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: send (AT&F^M) | ||
101 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: expect (OK) | ||
102 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: AT&F^M^M | ||
103 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: OK | ||
104 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: ~-~- got it | ||
105 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: send (ATE1^M) | ||
106 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: expect (OK) | ||
107 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: ^M | ||
108 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: ATE1^M^M | ||
109 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: OK | ||
110 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: ~-~- got it | ||
111 | Fri Feb 7 01:20:29 2020 local2.info chat[29485]: send (AT+CGDCONT=1,"IP",""^M) | ||
112 | Fri Feb 7 01:20:30 2020 local2.info chat[29485]: timeout set to 30 seconds | ||
113 | Fri Feb 7 01:20:30 2020 local2.info chat[29485]: expect (OK) | ||
114 | Fri Feb 7 01:20:30 2020 local2.info chat[29485]: ^M | ||
115 | Fri Feb 7 01:20:30 2020 local2.info chat[29485]: AT+CGDCONT=1,"IP",""^M^M | ||
116 | Fri Feb 7 01:20:30 2020 local2.info chat[29485]: OK | ||
117 | Fri Feb 7 01:20:30 2020 local2.info chat[29485]: ~-~- got it | ||
118 | (% style="color:#037691" %)**Fri Feb 7 01:20:30 2020 local2.info chat[29485]: send (ATD*99#^M) ~-~-~-~--> In case the dialling process already reach here. | ||
119 | Normally the problem is with a provider, need to check if the SIM card has balance or other requirement from the cellular operator**(%%) | ||
120 | (% style="color:black" %)Fri Feb 7 01:20:30 2020 local2.info chat[29485]: expect (CONNECT) | ||
121 | Fri Feb 7 01:20:30 2020 local2.info chat[29485]: ^M | ||
122 | Fri Feb 7 01:20:30 2020 local2.info chat[29485]: ATD*99#^M^M | ||
123 | Fri Feb 7 01:20:30 2020 local2.info chat[29485]: CONNECT | ||
124 | Fri Feb 7 01:20:30 2020 local2.info chat[29485]: ~-~- got it | ||
125 | Fri Feb 7 01:20:30 2020 local2.info chat[29485]: send ( ^M) | ||
126 | Fri Feb 7 01:20:30 2020 daemon.info pppd[29452]: Serial connection established. | ||
127 | ))) | ||
128 | |||
129 | |||
130 | |||
131 | == **2.4 If the following situation occurs, how can users solve this problem?** == | ||
132 | |||
133 | |||
134 | === **2.4.1 The gateway can read the SIM card, But the Internet is displayed as Fail.** === | ||
135 | |||
136 | |||
137 | //Users can check whether the APN matched by the SIM card is correct.// | ||
138 | |||
139 | //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.// | ||
140 | |||
141 | |||
142 | [[image:image-20220718155937-1.png||height="562" width="497"]] | ||
143 | |||
144 | |||
145 | |||
146 | === **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.** === | ||
147 | |||
148 | |||
149 | //It should be SIM card no flow, users can insert SIM cards into the mobile phone for testing.// | ||
150 | |||
151 | |||
152 | [[image:1658131428288-728.png||height="538" width="494"]] | ||
153 | |||
154 | |||
155 | |||
156 | === **2.4.3 The gateway can't read the SIM card, and the Internet is displayed as Fail.** === | ||
157 | |||
158 | |||
159 | //Users need to check whether the SIM card type is suitable for the EC25 module.// | ||
160 | |||
161 | |||
162 | [[image:1658131612484-845.png||height="549" width="499"]] | ||
163 | |||
164 | |||
165 | |||
166 | === **2.4.4 SIM display:~*~**SIM ERROR~*~** Check SIM is inserted test SIM in a mobile phone?** === | ||
167 | |||
168 | |||
169 | //Users can insert SIM cards into the mobile phone for testing.// | ||
170 | |||
171 | |||
172 | [[image:image-20220718160804-3.png||height="602" width="500"]] | ||
173 | |||
174 | |||
175 | |||
176 | = **3. Share Cellular Network for WiFi & LAN clients** = | ||
177 | |||
178 | |||
179 | ((( | ||
180 | //By default, the Cellular Network won't be shared with the WiFi or LAN clients. If users need to share with them, the user can modify the file.// | ||
181 | ))) | ||
182 | |||
183 | (% class="box" %) | ||
184 | ((( | ||
185 | ((( | ||
186 | root@dragino-1d25dc:~~# cat /etc/config/firewall | ||
187 | |||
188 | config defaults | ||
189 | option syn_flood '1' | ||
190 | option input 'ACCEPT' | ||
191 | option output 'ACCEPT' | ||
192 | option forward 'REJECT' | ||
193 | config zone | ||
194 | option name 'lan' | ||
195 | list network 'lan' | ||
196 | option input 'ACCEPT' | ||
197 | option output 'ACCEPT' | ||
198 | option forward 'REJECT' | ||
199 | config zone | ||
200 | option name 'wan' | ||
201 | list network 'wan' | ||
202 | list network 'wwan' | ||
203 | list network 'wan6' | ||
204 | list network 'cellular' ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~--> Add this line and reboot | ||
205 | option input 'REJECT' | ||
206 | option output 'ACCEPT' | ||
207 | option forward 'ACCEPT' | ||
208 | option masq '1' | ||
209 | option mtu_fix '1' | ||
210 | config forwarding | ||
211 | option src 'lan' | ||
212 | option dest 'wan' | ||
213 | ))) | ||
214 | ))) | ||
215 | |||
216 | ((( | ||
217 | //and run **/etc/init.d/firewall reload** or reboot the device.// | ||
218 | |||
219 | |||
220 | |||
221 | = **4. Switching between Cellular and Ethernet and Wi-Fi networks** = | ||
222 | |||
223 | |||
224 | //By default, Cell is the backup WAN where the Ethernet or Wi-Fi network is used first if they are available.// | ||
225 | |||
226 | //Once the Ethernet of the Wi-Fi network is unavailable where the gateway network will switch to a Cell network from Ethernet or Wi-Fi.// | ||
227 | |||
228 | |||
229 | |||
230 | **Enable Cellular and connect Ethernet at the same time** | ||
231 | |||
232 | ETH icon is displayed as [[image:1658135519305-444.png||height="18" width="19"]] Indicates that Ethernet is the main working network. | ||
233 | |||
234 | Cell icon is displayed as [[image:1658135500498-725.png||height="17" width="17"]] Indicates that Cellular is the backup WAN. | ||
235 | |||
236 | |||
237 | (% style="display:none" %) (%%) | ||
238 | |||
239 | == **4.1 Switching between Cellular and Ethernet networks** == | ||
240 | |||
241 | |||
242 | //When connecting to the AP WiFI of the gateway, users can access the Web UI of the gateway through the default address 10.130.1.1// | ||
243 | |||
244 | [[image:image-20220606140622-2.png||height="664" width="1106"]] | ||
245 | |||
246 | |||
247 | //**Remove the network cable from the WAN port on the gateway, the gateway will switch to a Cellular network.**// | ||
248 | |||
249 | [[image:image-20220606140859-4.png||height="687" width="1107"]] | ||
250 | |||
251 | (% style="display:none" %) (%%) | ||
252 | |||
253 | |||
254 | == **4.2 Switching between Cellular and WiFi networks** == | ||
255 | |||
256 | |||
257 | (% class="wikigeneratedid" %) | ||
258 | //Enable **Cellular** and connect **WiFi** at the same time// | ||
259 | |||
260 | //WiFi icon is displayed as //[[image:1658135519305-444.png||height="23" width="24"]] Indicates that WiFi is the main working network. | ||
261 | |||
262 | //Cell icon is displayed as //[[image:1658135500498-725.png||height="23" width="22"]]// Indicates that Cellular is the backup WAN.// | ||
263 | |||
264 | |||
265 | [[image:image-20220606141113-7.png||height="678" width="1106"]] | ||
266 | |||
267 | |||
268 | //**Close the WiFi WAN, the gateway will switch to a Cellular network.**// | ||
269 | |||
270 | [[image:image-20220606140932-5.png||height="687" width="1107"]] | ||
271 | |||
272 | |||
273 | |||
274 | == **4.3 At the same time start Cellular and Ethernet and Wi-Fi networks** == | ||
275 | |||
276 | |||
277 | [[image:image-20220606140328-1.png||height="682" width="1108"]] | ||
278 | |||
279 | |||
280 | |||
281 | ))) | ||
282 | |||
283 | = **5. How does the gateway view the International Mobile Equipment Identity (IMEI)** = | ||
284 | |||
285 | |||
286 | Users can get the IMEI via Linux command, but you have to access the gateway CLI. | ||
287 | |||
288 | (% class="box infomessage" %) | ||
289 | ((( | ||
290 | **root@dragino-1b7c4c:~~# comgt -d /dev/ttyModemAT -s /etc/gcom/getimsi.gcom ** | ||
291 | ))) | ||
292 | |||
293 | [[image:image-20221027140604-1.png||height="330" width="707"]] | ||
294 | |||
295 | |||
296 | [[image:image-20221027151146-2.png||height="554" width="1000"]] | ||
297 | |||
298 | |||
299 | == **How does the gateway access the Quetel module directly (to send AT commands)** == | ||
300 | |||
301 | |||
302 | //Users can access the gateway CLI and run the minicom command to get the configuration interface.// | ||
303 | |||
304 | ((( | ||
305 | |||
306 | |||
307 | **//Enter the minicom command, then select the option ''serial port setup".//** | ||
308 | ))) | ||
309 | |||
310 | (% class="box infomessage" %) | ||
311 | ((( | ||
312 | **root@dragino-1ef9ac:~~# minicom -s** | ||
313 | ))) | ||
314 | |||
315 | [[image:image-20220527154132-6.png]] | ||
316 | |||
317 | |||
318 | And then, change the setting: | ||
319 | |||
320 | (% class="box infomessage" %) | ||
321 | ((( | ||
322 | **Serial Device :** (% style="color:#037691" %)**/dev/ttyModemAT** | ||
323 | |||
324 | **Bps/Par/Bits :(% style="color:#037691" %) 9600 8N1(%%)** | ||
325 | ))) | ||
326 | |||
327 | |||
328 | (% style="color:red" %)//**Note: Enter the corresponding letter to change the configuration, like A,B,C**// | ||
329 | |||
330 | [[image:image-20220527154154-7.png]] | ||
331 | |||
332 | |||
333 | ((( | ||
334 | //Enter (% style="color:blue" %)**AT+GSN **(%%)in the interface to get the IMEI,// | ||
335 | ))) | ||
336 | |||
337 | ((( | ||
338 | //**For example: (% style="color:#037691" %)860548042566627(%%)**// | ||
339 | ))) | ||
340 | |||
341 | (% class="box infomessage" %) | ||
342 | ((( | ||
343 | ((( | ||
344 | **AT+GSN** | ||
345 | ))) | ||
346 | ))) | ||
347 | |||
348 | [[image:image-20220527154231-8.png]] | ||
349 | |||
350 | |||
351 | |||
352 | = **6. How does the gateway connect to the network via a USB 4G Dongle** = | ||
353 | |||
354 | |||
355 | == **6.1 Introduction** == | ||
356 | |||
357 | |||
358 | (% style="color:red" %)**//Prerequisite: Requires a USB 4G Dongle and a supported gateway firmware//** | ||
359 | |||
360 | ((( | ||
361 | //This introduces a setup and configured gateway for using a USB 3g/UMTS-modem for WAN connection.// | ||
362 | |||
363 | |||
364 | ))) | ||
365 | |||
366 | ((( | ||
367 | //Many modes (and most **LTE**) USB modems provide **qmi**, **mbim**, **ncm**, **rndis** protocol for connection instead of legacy **ppp** protocol, they are faster and better, overall recommended.// | ||
368 | ))) | ||
369 | |||
370 | ((( | ||
371 | //This is not beginner-friendly due to too many protocols.// | ||
372 | |||
373 | //For more information: [[https:~~/~~/openwrt.org/docs/guide-user/network/wan/wwan/3gdongle>>url:https://openwrt.org/docs/guide-user/network/wan/wwan/3gdongle]]// | ||
374 | |||
375 | |||
376 | |||
377 | ))) | ||
378 | |||
379 | == **6.2 How to use the USB Dongle at the gateway** == | ||
380 | |||
381 | |||
382 | //Most of the products can be used on the gateway, but because their protocols are different, they are not used in the same way.// | ||
383 | |||
384 | ((( | ||
385 | //For example, the Huawei-E3372/E8372 is using **Hilink mode** or **NCM mode**.// | ||
386 | ))) | ||
387 | |||
388 | (% class="box" %) | ||
389 | ((( | ||
390 | Huawei-E3372/E8372 | ||
391 | Check the (% style="color:#037691" %)**E3372**(% style="color:black" %) version to determine the mode. | ||
392 | The version numbers starting with 21 is NCM mode | ||
393 | The version numbers starting with 22 is Hilink mode | ||
394 | The E8372 only has Hilink mode | ||
395 | **~ **(% style="color:red" %)**Note: The e3372 in the vast majority of cases is Hilink mode** | ||
396 | ))) | ||
397 | |||
398 | |||
399 | |||
400 | == **6.3 Hilink mode** == | ||
401 | |||
402 | |||
403 | //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/]]// | ||
404 | |||
405 | |||
406 | |||
407 | === **6.3.1 Plugs into the device** === | ||
408 | |||
409 | |||
410 | ((( | ||
411 | //USB-Dongle plugs into the gateway USB port// | ||
412 | ))) | ||
413 | |||
414 | ((( | ||
415 | //Check the USB module via command (% style="color:#037691" %)**lsusb**// | ||
416 | ))) | ||
417 | |||
418 | ((( | ||
419 | (% style="color:red" %)//**Note: Users need to that connect to the gateway command line via ssh.**// | ||
420 | ))) | ||
421 | |||
422 | [[image:image-20220527154739-9.png]] | ||
423 | |||
424 | |||
425 | |||
426 | === **6.3.2 Detection of new network interfaces added** === | ||
427 | |||
428 | |||
429 | //Check network configuration command line input: // | ||
430 | |||
431 | (% class="box infomessage" %) | ||
432 | ((( | ||
433 | ((( | ||
434 | **~ root@dragino-1ef9ac:~~# ifconfig -a** | ||
435 | ))) | ||
436 | ))) | ||
437 | |||
438 | [[image:image-20220527154822-10.png]] | ||
439 | |||
440 | //In the command, the output user can see that the new interface added is (% style="color:#037691" %)**eth2**// | ||
441 | |||
442 | //Usually, the user can see that the new interface added is (% style="color:#037691" %)**eth2** (% style="color:black" %)or (% style="color:#037691" %)**wwan0**// | ||
443 | |||
444 | |||
445 | |||
446 | === **6.3.3 Add the new interface to the network configuration.** === | ||
447 | |||
448 | |||
449 | //Enter the configuration from the command line~:// | ||
450 | |||
451 | (% class="box" %) | ||
452 | ((( | ||
453 | uci set network.lte=interface | ||
454 | uci set network.lte.proto=dhcp | ||
455 | uci set network.lte.ifname=eth2 ~-~-~-~-~-~-~-~-->#This depend on the name of the new interface gateway add | ||
456 | uci commit network | ||
457 | uci set firewall.@zone[1].network="wan wwan wan6 lte" | ||
458 | uci commit firewall | ||
459 | /etc/init.d/network restart | ||
460 | ))) | ||
461 | |||
462 | [[image:image-20220527154937-11.png]] | ||
463 | |||
464 | |||
465 | //**Checking Network Configurations**// | ||
466 | |||
467 | //Command-line input: (% style="color:#037691" %)**ifconfig**// | ||
468 | |||
469 | [[image:image-20220527155013-12.png]] | ||
470 | |||
471 | //Now, Gateway is configured to access the internet on the LTE network.// | ||
472 | |||
473 | |||
474 | |||
475 | == **6.4 NCM mode** == | ||
476 | |||
477 | |||
478 | == **6.5 Troubleshooting** == | ||
479 | |||
480 | |||
481 | === **6.5.1 The USB-Dongle interface cannot obtain the IP address.** === | ||
482 | |||
483 | |||
484 | //Please try this USB dongle to access the internet on your PC, to make sure this USB dongle can normally access the internet.// | ||
485 | |||
486 | |||
487 | |||
488 | = **7. How to reduce data traffic** = | ||
489 | |||
490 | |||
491 | == **7.1 Reduce Status Uplink Interval** == | ||
492 | |||
493 | |||
494 | **//The gateways will use the data traffic below two places.//** | ||
495 | |||
496 | |||
497 | //1. There is the data traffic from LoRa package Forward which were the gateway status package and sensor end node uplink/downlink.// | ||
498 | |||
499 | //For this case, by default, the gateway will uplink self-status to the LoRaWAN server per the 30s. the users can adjust the interval time.// | ||
500 | |||
501 | [[image:image-20220527155108-13.png]] | ||
502 | |||
503 | |||
504 | |||
505 | //2. There is the data traffic from the gateway check self-network status. by default, the gateway will check the network per 15s.// | ||
506 | |||
507 | //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.// | ||
508 | |||
509 | [[image:image-20220527155358-16.png]] | ||
510 | |||
511 | //System General interface// | ||
512 | |||
513 | |||
514 | [[image:image-20220527155229-15.png]] | ||
515 | |||
516 | //Keepalive script interval time settings// | ||
517 | |||
518 | |||
519 | |||
520 | == **7.2 Filter unwanted packets** == | ||
521 | |||
522 | |||
523 | See [[How to filter unwanted packets>>doc:Main.Filter unwanted LoRaWAN packets.WebHome]] | ||
524 | |||
525 | |||
526 | == **7.3 Usage statistics** == | ||
527 | |||
528 | |||
529 | ~1. Activate LuCI and connect to SSH following [[these instructions>>doc:Main.Install Luci in the new UI firmware.WebHome]] | ||
530 | |||
531 | 2. Install luci-app-statistics using the following terminal commands: | ||
532 | |||
533 | {{{opkg update | ||
534 | opkg install luci-app-statistics | ||
535 | opkg install collectd-mod-interface | ||
536 | /etc/init.d/collectd enable | ||
537 | reboot | ||
538 | }}} | ||
539 | |||
540 | 3. Select the interface to be monitored by going to **Statistics > Setup **in the upper menu then **Network plugins > Interfaces. **Select **3g-cellular **in the list then save. You can select multiple interfaces by pressing the **ctrl key **while selecting the interfaces. | ||
541 | |||
542 | [[image:image-20221124133431-1.png]] | ||
543 | |||
544 | [[image:image-20221124135102-2.png]] | ||
545 | |||
546 | 4. View the graphs and statistics using by going to **Statistics > Graphs** **> Interfaces > 3g-cellullar** | ||
547 | |||
548 | [[image:image-20221124134927-1.png]] | ||
549 | |||
550 |