Aggiungo anche il file /etc/ppp/peers/WIND:
# This optionfile was generated by pppconfig 2.3.18.
#
#
hide-password
noauth
connect "/usr/sbin/chat -v -f /etc/chatscripts/WIND"
debug
/dev/ttyUSB3
9600
defaultroute
noipdefault
user "
xxxxlibero.it"
remotename WIND
ipparam WIND
usepeerdns
e il file /etc/chatscripts/WIND:
# This chatfile was generated by pppconfig 2.3.18.
# Please do not delete any of the comments. Pppconfig needs them.
#
# ispauth PAP
# abortstring
ABORT BUSY ABORT 'NO CARRIER' ABORT VOICE ABORT 'NO DIALTONE' ABORT 'NO DIAL TONE' ABORT 'NO ANSWER' ABORT DELAYED
# modeminit
'' AT+cgdcont=1,"IP","internet.wind";
# ispnumber
OK-AT-OK "ATDT*99#"
# ispconnect
CONNECT \d\c
# prelogin
# ispname
# isppassword
# postlogin
# end of pppconfig stuff