I have to answer myself : conf : redhat 7.0, wavecom, kannel 1.03... and testing kannel with a siemens S35i
Problem : I could send SMS from kannel but there was no reception of a sms sended from the S35i. Solution : If the notification of good reception is valid on the S35i, kannel (1.03) don't see it. So I just had to deactivate this feature on my mobile phone... Thanks Nicolas