Ethernet performance do not achieve the standard speed by ...



EWM FAQCategoryEWMDate2020/02/26KeywordEWM-C163M201E,3G/4G Connection,PPP mode,wvdial application,mobile-broad-band script,Ubuntu 16.04 LTS and above versionQuestion:How to establish 3G/4G connection with EWM-C163M201E automatically when system startup on Ubuntu Linux OS?Notice:With EWM-C163M201E module, please remember to switch network mode by AT commands at first.Step 1Before set up dial up connection, please install “minicom” application by typing “apt-get install minicom” through ethernet network in order to switch network mode for establishing 4G connectionStep 2Enter to minicom application and input following Commands one by one OrderlyAT+GTUSBMODE?AT+GTUSBMODE=0AT+CFUN=16 Step 3Input “dir ../dev/ttyACM*” Command and ensure the counter of Com port will increase to 3Instructions : (mobile-broadband,Wvidal)[Mobile-broadband]Step 1Tick “New Mobile Broadband connection” on Network Manager and apply related settings step by stepStep 2After finishing configuration, the network connection will be established automaticallyNote: please input “sudo ifconfig” command on terminal to check if the ip address is assigned or notStep 3Do ping test and ensure the connection is workable or notStep 4Copy the attached script under specific folder(/home/Desktop/Startup) on your platform Step 5 Modify the access permission of service by “sudo chmod 777 mobile-broadband-connect-2.1.sh” commandStep 6Create a startup service under specific folder(/etc/systemd/system/)which can execute “mobile-broadband-connect-2.1.sh” script when boots up system automatically <please refer to attached service file below> <Directory modification>/etc/systemd/system/AutoDialUp.service[Unit]Description=Auto Dial up serviceAfter=network.target systemd-sysctl.service systemd-modules-load.service[Service]User=rootWorkingDirectory=/home/advantech/Desktop/StartupRestart=noType=oneshotExecStart=/home/advantech/Desktop/Startup/mobile-broadband-connect-2.1.sh startRemainAfterExit=true[Install]WantedBy=multi-user.targetStep 7 Double check if the service has created under specific folder and modify the access permission of service by “sudo chmod 777 AutoDialUp.service” command.Step 8 Enable “AutoDialUp.service” service and activate it by following commands in red mark in order to execute process when system boots upStep 9 Reboot system and confirm if the 3G/4G connection can be established after booting up Step 10 Check the “AutoDialUp” service status by “systemctl status AutoDialUp.service” command if it’s activating in system backgroundNote: the script will check the current connection status every 10 seconds and do auto reconnection if the network connection is terminated[Wvdial]Step 1Install “Wvdial” application by Typing “apt-get install wvdial” command in terminal Step 2Create your “wvdial.conf” profile in specific path (/etc/wvdial.conf) which must refer to your sim card information<Example_3G/4G>[Dialer Defaults]Init1 = ATZ; Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0Modem Type = Analog ModemPhone = *99#ISDN = 0Password = passwordNew PPPD = yesUsername = usernameModem = /dev/ttyACM0 //select correct ACM portBaud = 9600Stupid Mode = 1Step 3In order to ensure your connection can be established normally, please input SIM card’s PIN code which define by your carrier in “minicom” application before 3G/4G connecting Note: For my sample, the default PIN code is 0000Step 4Exit “minicom” application (CTRL+A+Z) and input “wvdial &” command to establish 3G/4G connection Step 5After connecting 3G/4G by wvdial application, please cross check if the ppp interface has generated in network interfaceStep 6 Create a shell script to execute “wvdial” application under specific folder(/home/Desktop/Startup) and configure the counters of redial up and delay time which depends on your platform <refer to attached script file below>250134812433853215806876383Step 7 Create a startup service under specific folder(/etc/systemd/system/)which can execute “autoDialup_script.sh” script when boots up system automatically <please refer to attached service file below> <Directory modification>/etc/systemd/system/AutoDialUp.service[Unit]Description=Auto Dial up serviceAfter=network.target systemd-sysctl.service systemd-modules-load.service[Service]User=rootWorkingDirectory=/home/advantech/Desktop/StartupRestart=noType=oneshotExecStart=/home/advantech/Desktop/Startup/autoDialup_script.shRemainAfterExit=true[Install]WantedBy=multi-user.targetStep 8 Double check if the service has created under specific folder and modify the access permission of service by “sudo chmod 777 AutoDialUp.service” command.Step 9 Enable “AutoDialUp.service” service and activate it by following commands in red mark in order to execute process when system boots upStep 10 Shut down system and confirm if the 3G/4G connection can be established after booting up ................
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