pppd doesn't work any more

Hello,

I have got a Problem with the pppd.

There are two Modems hooked up to the Server on ttyS0 -> ISDN
and on ttyS1 -> a analog one.

All is configured for an DialIn Server with mgetty and pppd
AND it has worked before and is working on a test system with the exact 
same configuration!

When testing we set up a dial-out on the server and it works fine when 
using ifup ppp0 but when issueing wvdial dialout it hangs after:
pppd 2.4.2b3 started by dialout, uid 0
It also hangs on the same posission if we try to dial-in.

The Modems and mgetty is working fine,because without PPP you get the 
normal LOGIN with no problems.

The normal Configuration should be like the following (on RedHat 9):

<ppp/options>
-detach
asyncmap 0
debug
idle 300
lock
noauth
modem
crtscts
proxyarp
login
lcp-echo-interval 30
lcp-echo-failure 10
lcp-max-configure 30
lcp-max-failure 30
lcp-max-terminate 10
lcp-restart 10
ipcp-restart 8

<ppp/options.ttyS0> (only for DialIN)
ms-dns 10.1.0.136
192.168.133.50:192.168.133.51

<ppp/options.ttyS1> (only for DialIN)
ms-dns 10.1.0.136
192.168.133.40:192.168.133.41

<ppp/pap-sectres>
# Secrets for authentication using PAP
# client        server  secret                  IP addresses
"dialin"       *       "***"        *

<wvdial.conf>
[Modem0]
Modem = /dev/ttyS1
Baud = 115000
SetVolume = 0
Dial Command = ATDT
Init1 = ATZ
FlowControl = NOFLOW

[Modem1]
Modem = /dev/ttyS1
Baud = 38400
SetVolume = 0
Dial Command = ATDT
Init1 = ATZ
FlowControl = NOFLOW

[Dialer InternalTest]
Username=dialin
Password=***
Phone=12
Stupid Mode=1
Inherits=Modem1


Logs:
</var/log/messages>
pppd 2.4.1 started by a_ppp, uid 0
Terminating on signal 15.
Exit.


Any help will be abbreviated.

MfG,
            Tobias