ISDN dial

Hi all, I'am running a SuSe 6.2 linux server with a Teles.BRI/16.3 card. Everthing works fine except when the first dialup fails, all next dials also fail. My config is to dial 5 times, so when the first dial fail, the next 4 dials also fail. I have to init 1 init 2 or reboot the whole system before I can dial again, with a succesfull login at my ISP. Does anyone have the same problem, or does anyone know the cause of this. Any help or suggestions are wellcome. Thanks Wil