No dial-tone in system startup

[Guest Luc Henrot]

I have a dial-up ISDN connection (Speedtouch modem). When starting up the

system my modem initialises, and after some seconds, starts to flikker its

right LED. Then comes the user-login, which I enter as an administrator. My

modem goes on flikkering, but when I ask to start the dial-up, is says: "no

dial tone". When I wait a twenty minutes, it all stops by itselves flikkering

and returns into a stable LED. Starting up the dial-up is OK, I don't have

any troubles the long of the session.

I suspect that there is a program, routine (no virus I hope) that executes

'something' and waits for a reply or something else. As it happens before the

user-login, I cannot see what is executing at the startup, which programs or

routines. After the startup, when I check everything is OK, but my modem

still doesn't detect any dial-tone as he says, although there is one. The

task-manager does show any active application, the performance is in

IDLE-state.

Is there any way to check what is executed at start-up time, and before

luser login?

As I staed before, this problem disappear by itself after a variable number

of minutes.