Smartlink modem

Hello all I don't know if this topic has been already treated (in that case, don't kill me ;-)) I installed SuSE 9.1 on my notebook. During the installation yast detected the internal modem and installed smartlink package. Well, if I query the modem (kppp) it answers, but when I try a connection this fails with NO DIALTONE message. Obviously that modem works fine under XP. Ciao emilio