Can't get wvdial to work on ARM platform (?)

[João M. S. Silva]

Hi,

I'm using GSM module SIM800L in Ubuntu 14.04.3 on an ARM platform.

I can't get wvdial to work:

$ wvdial -C wvdial.conf
--> WvDial: Internet dialer version 1.61
--> Initializing modem.
--> Sending: ATZ
--> Sending: ATQ0
--> Re-Sending: ATZ
--> Modem not responding.

$ cat wvdial.conf
[Dialer Defaults]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2
Init3 = AT+CGDCONT=1,"ip","internet.vodafone.pt"
Modem Type = Analog Modem
;Baud = 38400
Baud = 115200
New PPPD = yes
Modem = /dev/ttyS4
ISDN = 0
Phone = *99#
Password = { }
Username = { }

But if I use miniterm:

$ miniterm.py /dev/ttyS4 115200
--- Miniterm on /dev/ttyS4: 115200,8,N,1 ---
--- Quit: Ctrl+]  |  Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---
atz
OK
atq0
OK

--- exit ---

What's the difference between miniterm and wvdial?

Thanks.

[João M. S. Silva]

I'm beginning to believe it has to do with hardware flow control settings.

I can dial with pppd, but only if I change /etc/ppp/options to:

#crtscts
xonxoff

Is hardware flow control hardcoded in wvdial? I don't see an option to control that.