LPWA - Dial-up network connections with WvDial

USB Connect LPWA can perform dial-up network (DUN) connections supporting the Point-to-Point Protocol (PPP). Below we give an example of how you can connect to the Internet using app WvDial. WvDial is a Point-to-Point Protocol Dialer: it dials a modem and starts PPP in order to connect to the Internet.

Step 1: Install wvdial

sudo apt install wvdial

Step 2: Edit /etc/wvdial.conf for the follows

[Dialer Defaults]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2
Init3 = AT+CGDCONT=1,"IP","lpwa.vodafone.com"
Username = gdsp
Password = gdsp
Phone = *99***1#
New PPPD = yes
Modem Type = Analog Modem
Stupid Mode = 1
CarrierCheck = No
Check DNS = 1
Dial Command = ATD
Modem = /dev/ttyUSB1
ISDN = 0
Baud = 115200
; Phone = <Target Phone Number>
; Password = <Your Password>
; Username = <Your Login Name>

Change APN lpwa.vodafone.com and modem port /dev/ttyUSB1 to your own

Step 3: Start connection via command

The module must be attached to the network before starting the WvDial.

sudo wvdial

Step 4: Wait for connection

pi@raspberrypi:~ $ sudo wvdial
--> WvDial: Internet dialer version 1.61
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2
ATQ0 V1 E1 S0=0 &C1 &D2
OK
--> Sending: AT+CGDCONT=1,"IP","lpwa.vodafone.com"
AT+CGDCONT=1,"IP","lpwa.vodafone.com"
OK
--> Modem initialized.
--> Sending: ATD*99***1#
--> Waiting for carrier.
ATD*99***1#
CONNECT 150000000
--> Carrier detected.  Starting PPP immediately.
--> Starting pppd at Tue Feb 28 13:35:55 2023
--> Pid of pppd: 1627
--> Using interface ppp0
--> local  IP address 100.97.28.119
--> remote IP address 10.64.64.64
--> primary   DNS address 217.14.160.130
--> secondary DNS address 217.14.164.35

To exit the connection, enter the command CTRL+C

Troubleshooting

Sometimes it may happen that WvDial exits without closing the PPP interface. This means that when WvDial is restarted, it will no longer work properly. The following application helps restart USB Connect LPWA to close the PPP interface.

Step 1: Install libqmi-utils

sudo apt install libqmi-utils

Step 2: Reset USB Connect LPWA

sudo qmicli --device=/dev/cdc-wdm0 --dms-set-operating-mode="reset"

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