Problem with incomming SMS

Hello,

I use the last Kannel stable release with RH 9.0 and a Ericsson Modem :
F221m model.

I have no problem to send SMS but i have problem with incoming SMS.

The error message is : 
2003-09-15 17:17:40 [5] DEBUG: AT2[/dev/ttyS0]: <-- +CMT: 31
2003-09-15 17:17:40 [5] DEBUG: AT2[/dev/ttyS0]: <--
069142318000F904099142318002F900003090517111120006EDF47C0E9201
2003-09-15 17:17:40 [5] ERROR: AT2[/dev/ttyS0]: got +CMT but pdu_extract
failed

I had configure my SMSc and Modem like this :

#SMSC Setup
group = smsc
smsc = at2
modemtype = ericsson_f221m
device = /dev/ttyS0
alt-dcs = true
speed = 9600

#MODEM

group = modems
id = ericsson_f221m
name = "Ericsson f221m"
detect-string = "F221m"
init-string = "AT+CNMI=3,3"
keepalive-cmd = "AT+CMGF=0"
no-smsc=true

I don't understand how resolve this problem. Can you help me ?

Thanks

Jérémie from Libreville (Gabon)