Raspberry Pi PPP dial-up

PPP dial

• Switch to root account

sudo su

• Install ppp

sudo apt-get install ppp

• Enter the /etc/ppp/peers directory

cd /etc/ppp/peers

• Create gprs file

sudo nano gprs

• Copy the text below to gprs

(If you need UART dial-up, change ttyS0 to ttyUSB2) The content is as follows:

user "myusername@realm"
#connect "/usr/sbin/chat -v -f /etc/chatscripts/pap -T ********"
connect "/usr/sbin/chat -v -f /etc/chatscripts/gprs"
#/dev/modem
/dev/ttyUSB2
#/dev/ttyS0     
# Speed of the serial line.
115200
nocrtscts
debug
nodetach
ipcp-accept-local
ipcp-accept-remote
# Assumes that your IP address is allocated dynamically by the ISP.
noipdefault
# Try to get the name server addresses from the ISP.
usepeerdns
# Use this connection as the default route.
defaultroute
# Makes pppd "dial again" when the connection is lost.
persist
# Do not ask the remote to authenticate.
noauth

• PPP dial

pppd call gprs &

• View ppp0 network

ifconfig

• Test the Internet

ping -I ppp0 www.baidu.com

Auto-start PPP dialing after power-on (optional)

• Edit the test.sh file

sudo nano test.sh

• Copy the following text to tesh.sh

sudo su
# sleep 1m
cd /etc/ppp/peers
pppd call gprs &

• Grant executable permissions to script files (example: test.sh, path: ./home/pi/test.sh)

sudo chmod 777 test.sh

• Open the /etc/rc.local file

sudo nano /etc/rc.local

• Add the execution script command in the /etc/rc.local file (the line above the statement exit 0)

bash ./home/pi/test.sh

• Then execute the restart script

./test.sh