SIM820X PPP Dial-Up

sudo su
cd /etc/ppp/peers
sudo apt-get install ppp
wget https://www.waveshare.com/w/upload/5/5b/SIM820X_PPP.zip
unzip SIM820X_PPP.zip
pppd call simcom-pppd &

ifconfig
ping -I ppp0 www.waveshare.com

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