modem hang up under gnome.ppp

["Jean-Raymond.Chauviere" <Jean-Raymond Chauviere cetelem fr>]

Using kppp, every thing works fine.
For reasons I have not to explain there, I would prefer to use
gnome-ppp
But each time I try to connect, it launch pppd successfully,
modem lights blink and I get the message that unfortunately pppd dies
in the /var/log/message file, pppd says only: Modem Hang up

Any idea ?
JRC

-- 
Nur der kleine Geist hält Ordnung, das Genie beherrscht das Chaos.
Seuls les petits esprits aiment l'ordre, le génie maitrîse le chaos.
(anonyme)