View source for SIM868 PPP Dail-up Networking

SIM868 module features GPRS function (2G Network), so we could use SIM868 module to dial-up networking using PPP.
As we know, SIM868 module features GPRS function, however, it is controlled with AT instructions, and AT instruction is not convenient in Raspberry Pi. If the function could be operated just like operate WIFI it will be much better. In this case, we describe how to use PPP to dial-up networking.
*Fistly, we need to install PPP server
 sudo apt-get install ppp
* Switch to root permission
 sudo su
* Enter the directory /etc/ppp/peers, copy the file provider and name it gprs
 cd /etc/ppp/peers
 cp provider gprs
* Open file gprs and edit it
 sudo nano gprs
[[File:SIM868_PPP_1.jpg|650px]]
*Exeute the command as below to run it in the background
 pppd call gprs &
[[File:SIM868_PPP_2.jpg|500px]]
*Close the network
 ifconfig eth0 down
 ifconfig wlan0 down
 route add -net 0.0.0.0 ppp0
*Then execute command ifconfig you can find the ppp0
[[File:SIM868_PPP_3.jpg|500px]]
*Finally, just try to ping one web site like google or baidu.com. If you can ping the web site successfully, it means that the setting is correct and it can network now.
[[File:SIM868_PPP_4.jpg|500px]]