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...	...	@@ -78,9 +78,9 @@
78	78	Fri Feb  7 01:20:30 2020 local2.info chat[29485]: AT+CGDCONT=1,"IP",""^M^M
79	79	Fri Feb  7 01:20:30 2020 local2.info chat[29485]: OK
80	80	Fri Feb  7 01:20:30 2020 local2.info chat[29485]:  ~-~- got it
81		-Fri Feb  7 01:20:30 2020 local2.info chat[29485]: send (ATD*99#^M)      ~-~-~-~--> In case the dialling process already reach here.
82		-Normally the problem is with a provider, need to check if the SIM card has balance or other requirement from the cellular operator
83		-Fri Feb  7 01:20:30 2020 local2.info chat[29485]: expect (CONNECT)
	81	+(% 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.
	82	+Normally the problem is with a provider, need to check if the SIM card has balance or other requirement from the cellular operator(%%)
	83	+(% style="color:black" %)Fri Feb  7 01:20:30 2020 local2.info chat[29485]: expect (CONNECT)
84	84	Fri Feb  7 01:20:30 2020 local2.info chat[29485]: ^M
85	85	Fri Feb  7 01:20:30 2020 local2.info chat[29485]: ATD*99#^M^M
86	86	Fri Feb  7 01:20:30 2020 local2.info chat[29485]: CONNECT
...	...	@@ -95,7 +95,9 @@
95	95
96	96	root@dragino-1d25dc:~~# cat /etc/config/firewall
97	97
98		-{{{config defaults
	98	+(% class="box" %)
	99	+(((
	100	+config defaults
99	99	option syn_flood '1'
100	100	option input 'ACCEPT'
101	101	option output 'ACCEPT'
...	...	@@ -105,13 +105,13 @@
105	105	list network 'lan'
106	106	option input 'ACCEPT'
107	107	option output 'ACCEPT'
108		- option forward 'REJECT'
	110	+ option forward 'REJECT'
109	109	config zone
110	110	option name 'wan'
111	111	list network 'wan'
112	112	list network 'wwan'
113	113	list network 'wan6'
114		- list network 'cellular' -----------------> Add this line and reboot
	116	+ list network 'cellular'   ~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~--> Add this line and reboot
115	115	option input 'REJECT'
116	116	option output 'ACCEPT'
117	117	option forward 'ACCEPT'
...	...	@@ -120,7 +120,7 @@
120	120	config forwarding
121	121	option src 'lan'
122	122	option dest 'wan'
123		-}}}
	125	+)))
124	124
125	125	and run **/etc/init.d/firewall reload** or reboot the device.
126	126
...	...	@@ -130,21 +130,22 @@
130	130
131	131	Select "**Serial Port Setup**":
132	132
133		-{{{root@dragino-1ef9ac:~# minicom -s
134		-}}}
	135	+(% class="box infomessage" %)
	136	+(((
	137	+root@dragino-1ef9ac:~~# minicom -s
	138	+)))
135	135
136	136	[[image:https://wiki.dragino.com/images/thumb/0/05/4G-1.png/400px-4G-1.png||height="265" width="400"]]
137	137
138	138	Enter the minicom command
139	139
140		-
141	141	Access the serial port of the 4G module
142	142
143	143	Serial port setup is as follows:
144	144
145		-**Serial Device :** /dev/ttyModemAT
	148	+**Serial Device :** (% style="color:#037691" %)**/dev/ttyModemAT**
146	146
147		-**Bps/Par/Bits :** 9600 8N1 or 115200 8N1
	150	+**Bps/Par/Bits :(% style="color:#037691" %) 9600 8N1 or 115200 8N1(%%)**
148	148
149	149	[[image:https://wiki.dragino.com/images/thumb/c/cb/EC25_1.png/400px-EC25_1.png||height="164" width="400"]]
150	150
...	...	@@ -153,21 +153,22 @@
153	153
154	154	Enter AT+GSN in the serial port to view the IMEI
155	155
156		-For example: 860548042566627
	159	+For example:** (% style="color:#037691" %)860548042566627(%%)**
157	157
158		-{{{AT+GSN
159		-}}}
	161	+(% class="box infomessage" %)
	162	+(((
	163	+AT+GSN
	164	+)))
160	160
161	161	[[image:https://wiki.dragino.com/images/thumb/6/66/4G-3.png/400px-4G-3.png||height="286" width="400"]]
162	162
163	163	Enter the AT command
164	164
165		-
166	166	= 5. How does the gateway connect to the network via a USB 4G Dongle =
167	167
168	168	== 5.1 Introduction ==
169	169
170		-Prerequisite: Requires a USB 4G Dongle and a supported gateway firmware
	174	+(% style="color:red" %)**Prerequisite: Requires a USB 4G Dongle and a supported gateway firmware**
171	171
172	172	This introduces a setup and configured gateway for using a USB 3g/UMTS-modem for WAN connection.
173	173
...	...	@@ -182,13 +182,15 @@
182	182
183	183	For example, the Huawei-E3372/E8372 is using Hilink mode or NCM mode.
184	184
185		-{{{ Huawei-E3372/E8372
186		- Check E3372 version to determine the mode.
	189	+(% class="box" %)
	190	+(((
	191	+ Huawei-E3372/E8372
	192	+ Check (% style="color:#037691" %)E3372(% style="color:black" %) version to determine the mode.
187	187	The version numbers starting with 21 is NCM mode
188	188	The version numbers starting with 22 is Hilink mode
189	189	The E8372 only have Hilink mode
190		- Note：The e3372 in the vast majority of cases is Hilink mode
191		-}}}
	196	+ (% style="color:#037691" %)~Note：The e3372 in the vast majority of cases is Hilink mode
	197	+)))
192	192
193	193	== 5.3 Hilink mode ==
194	194