GN_OP_GetSMSStatus at line 423 in file lowlevel.c returns error 11

[Pangaribuan Noor]

Please help me, I'm stuck, I'm using 
gnokii 0.5.6
Nokia 3330

.gnokiirc :
port = /dev/ttyS0
model = 3330
initlength = default
connection = m2bus
bindir = /usr/local/sbin/
use_locking = yes
serial_baudrate = 19200
smsc_timeout = 10


00 01 00 36 64                                  |    6d
Serial device: setting RTS to low and DTR to low
Serial device: setting RTS to high and DTR to low
[Received Ack, seq: 13]
[Sending Ack, seq: 15]
Message received: 0x14 / 0x000c
01 08 00 37 03 00 00 1e 00 00 00 00             |    7
Received message type 14
Message: SMS Status Received
        The number of messages: 0
        Unread messages: 0
Message sent: 0x14 / 0x0005
00 01 00 36 64                                  |    6d
Serial device: setting RTS to low and DTR to low
Serial device: setting RTS to high and DTR to low
[Received Ack, seq: 14]
[Sending Ack, seq: 16]
Message received: 0x14 / 0x000c
01 08 00 37 03 00 00 1e 00 00 00 00             |    7
Received message type 14
Message: SMS Status Received
        The number of messages: 0
        Unread messages: 0
GN_OP_GetSMSStatus at line 423 in file lowlevel.c returns 
error 11
Message sent: 0x14 / 0x0005
00 01 00 36 64                                  |    6d
Serial device: setting RTS to low and DTR to low
Serial device: setting RTS to high and DTR to low
GN_OP_GetSMSStatus at line 423 in file lowlevel.c returns 
error 14
Message sent: 0x14 / 0x0005
00 01 00 36 64                                  |    6d

it seems that gnokii can't get status of sms on my 
nok.3330 ??, please tell me how to solve it ??, sometime 
return code 11, some 14 ??, 14 is DEVICE_NOT_READY right 
??, but how to solve it ??
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