I've been trying to connect Huawei E3131 to my Raspberry pi.
So far I've installed ppp, usb_modeswitch and wvdial. Here is my wvdial.conf partially generated by wvdialconf and partially changed by myself:
[Dialer Defaults]
Modem = /dev/modem
Username = { }
Password = { }
Baud = 9600
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0
Init3 = ATX3
Carrier Check = no
Stupid Mode = 1
Modem Type = Analog Modem
ISDN = 0
Phone = *+88690xxxxxxx#
New PPPD = yes
In the end the output I get looks like that:
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0
ATQ0 V1 E1 S0=0
OK
--> Sending: ATX3
ATX3
OK
--> Modem initialized.
--> Sending: ATDT*+88690xxxxxxx#
--> Waiting for carrier.
ATDT*+88690xxxxxxx#
NO CARRIER
--> No Carrier! Trying again.
--> Sending: ATDT*+88690xxxxxxx#
--> Waiting for carrier.
ATDT*+88690xxxxxxx#
NO CARRIER
--> No Carrier! Trying again.
The simcard in the dongle is from Chunghwa Telecom (Taiwan) if that is any help.
Ok, apparently you don't need to change the basic *99# to your phone number. So the final config file looks like
[Dialer Defaults]
Modem = /dev/modem
Username = { }
Password = { }
Baud = 9600
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0
Init3 = ATX3
Carrier Check = no
Stupid Mode = 1
Modem Type = Analog Modem
ISDN = 0
Phone = *99#
New PPPD = yes
run it with sudo for creation of ppp and everything works fine. Also you may run wvdialconf to generate the config file with suitable commands. However parameteres are not affected by it, except Baud. Hope someone will find it useful.