PPP failling to connect to ISP

["Aedificator" <zee@email.si>]

After successfully turning a Winmodem into a Linmodem I am not able to setup
a dial-up connection to my ISP.

Is module tty-ldisc-3 part of the kernel?

Where can I find Debian specific help regarding ppp?

Thanks in advance.

Zee

The syslog says:
Mar  6 23:53:16 diablo chat[874]: send (ATDT088032320^M)
Mar  6 23:53:16 diablo chat[874]: expect (CONNECT)
Mar  6 23:53:16 diablo chat[874]: ^M
Mar  6 23:53:47 diablo chat[874]: ATDT088032320^M^M
Mar  6 23:53:47 diablo chat[874]: CONNECT
Mar  6 23:53:47 diablo chat[874]:  -- got it
Mar  6 23:53:47 diablo pppd[873]: Serial connection established.
Mar  6 23:53:47 diablo modprobe: modprobe: Can't locate module tty-ldisc-3
Mar  6 23:53:47 diablo pppd[873]: Couldn't set tty to PPP discipline:
Invalid argument
Mar  6 23:53:48 diablo pppd[873]: Hangup (SIGHUP)
Mar  6 23:53:48 diablo pppd[873]: Exit.
Mar  6 23:58:52 diablo pppd[921]: The remote system is required to
authenticate itself
Mar  6 23:58:52 diablo pppd[921]: but I couldn't find any suitable secret
(password) for it to use to do so.
Mar  6 23:58:52 diablo pppd[921]: (None of the available passwords would let
it use an IP address.)