Thank you for your kind help.
ltmodem_8.31a10.tar.gz is the first driver I tried. I installed it by the commands in the instruction text file, and it went smoothly. The driver was installed sucessfully, but probably did not work properly. See the attached wvdialconf and wvdial outputs.
Here is your lspci output:
vendelin:/home/andrej# lspci -n | grep 11c1
0000:00:0f.0 0780: 11c1:044c (rev 02)
vendelin:/home/andrej#
When removing the driver, I followed steps described in the enclosed text file (./ltuninst2, ./clean).
When trying the debian package from your website, I chose the one for my kernel version (2.4.27). Since the package was not successfuly installed, I did not cosider important to enter some commands for removal. Would dpkg -r be enough ?
I'm not a beginner at linux, you need not explain to me what pipe is... I'm not very good at this administration, though.
The modem really starts connecting with the driver ltmodem_8.31a10, after entering wvdial, which made me happy at first, but the connection dies out after authenticating. Until that, modem makes the same sounds as under Windows XP.
I would appreciate your help.
Andrej
vendelin:/home/jelen# wvdialconf /etc/wvdial.conf
Scanning your serial ports for a modem.
Port Scan<*1>: Scanning ttyLT0 first, /dev/modem is a link to it.
ttyLT0<*1>: ATQ0 V1 E1 -- OK
ttyLT0<*1>: ATQ0 V1 E1 Z -- OK
ttyLT0<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyLT0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyLT0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyLT0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyLT0<*1>: Modem Identifier: ATI -- LT V.92 Data+Fax Modem Version 8.31
ttyLT0<*1>: Speed 4800: AT -- OK
ttyLT0<*1>: Speed 9600: AT -- OK
ttyLT0<*1>: Speed 19200: AT -- OK
ttyLT0<*1>: Speed 38400: AT -- OK
ttyLT0<*1>: Speed 57600: AT -- OK
ttyLT0<*1>: Speed 115200: AT -- OK
ttyLT0<*1>: Max speed is 115200; that should be safe.
ttyLT0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyS0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyS0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
ttyS0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
ttyS1<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyS1<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
ttyS1<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
Port Scan<*1>: S2 S3 S4 ACM0 ACM1 ACM2 ACM3 ACM4
Port Scan<*1>: ACM5 ACM6 ACM7 ACM8 ACM9 ACM10 ACM11 ACM12
Port Scan<*1>: ACM13 ACM14 ACM15 USB0 USB1 USB2 USB3 USB4
Port Scan<*1>: USB5 USB6 USB7 USB8 USB9 USB10 USB11 USB12
Port Scan<*1>: USB13 USB14 USB15
Found a modem on /dev/ttyLT0, using link /dev/modem in config.
Modem configuration written to /etc/wvdial.conf.
ttyLT0<Info>: Speed 115200; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"
vendelin:/home/jelen# wvdial
--> WvDial: Internet dialer version 1.54.0
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Sending: ATX3
ATX3
OK
--> Modem initialized.
--> Sending: ATDT01920
--> Waiting for carrier.
ATDT01920
CONNECT 50666 V44
--> Carrier detected. Waiting for prompt.
User Access Verification
Welcome in ISDN ST_OnLine, Enter Your Username:
--> Looks like a login prompt.
--> Sending: internet
internet
Enter Your Access Password:
--> Looks like a password prompt.
--> Sending: (password)
% Authentication failed
Welcome in ISDN ST_OnLine, Enter Your Username:
--> Looks like a login prompt.
--> Sending: internet
internet
Enter Your Access Password:
--> Looks like a password prompt.
--> Sending: (password)
% Authentication failed
--> Don't know what to do! Starting pppd and hoping for the best.
--> Starting pppd at Fri Dec 15 16:50:36 2006
--> pid of pppd: 1238
--> Using interface ppp0
--> pppd: ATX3
--> pppd: ATX3
--> pppd: ATX3
--> pppd: ATX3
--> Disconnecting at Fri Dec 15 16:50:44 2006
--> The PPP daemon has died: A modem hung up the phone (exit code = 16)
--> man pppd explains pppd error codes in more detail.
--> Try again and look into /var/log/messages and the wvdial and pppd man pages for more information.
--> Auto Reconnect will be attempted in 5 seconds
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Caught signal #2! Attempting to exit gracefully...
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Sending: ATX3
ATX3
OK
--> Modem initialized.
--> Disconnecting at Fri Dec 15 16:50:46 2006
vendelin:/home/jelen#
