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iMX6- How to configure ppp package to access internet with GSM module

Question asked by Dao Van Toan on Jul 19, 2019
Latest reply on Aug 16, 2019 by Dao Van Toan

Hi everyone,

I have a small question in ppp. My appication is access internet via GSM module.

My configuration:

  • iMX6 UltraLite EVK with Distro 4.9.88-2.0.0 (rocko) and 
  • pppd version 2.4.7.
  • GSM module - Quectel UC15

And the problem is i dont know the exactly way to configure ppp package. The error is:

Connect script failed.

I configured the ppp package follow this steps:

$ nano /etc/ppp/peers/provider

provider file content:

# example configuration for a dialup connection authenticated with PAP or CHAP
# This is the default configuration used by pon(1) and poff(1).
# See the manual page pppd(8) for information on all the options.

# MUST CHANGE: replace myusername@realm with the PPP login name given to
# your by your provider.
# There should be a matching entry with the password in /etc/ppp/pap-secrets
# and/or /etc/ppp/chap-secrets.
user "myusername@realm"

# MUST CHANGE: replace ******** with the phone number of your provider.
# The /etc/chatscripts/pap chat script may be modified to change the
# modem initialization string.
connect "/usr/sbin/chat -v -f /etc/chatscripts/pap -T ********"

# Serial device to which the modem is connected.

# Speed of the serial line.

# Assumes that your IP address is allocated dynamically by the ISP.
# Try to get the name server addresses from the ISP.
# Use this connection as the default route.

# Makes pppd "dial again" when the connection is lost.

# Do not ask the remote to authenticate.


I changed:

user "myusername@realm" --> I dont know how to get this 

******** --> m-wap <this is an APN of mobile network- MOBIFONE SIM>

/dev/ttyS --> /dev/ttyUSB3

Should I edit another file ?