I assume that you already install smstools, download from http://smstools.meinemullemaus.de/
Check USB Device
#cat /proc/bus/usb/devices
Then do this, or you can download
# wget http://www.kanoistika.sk/bobovsky/archiv/umts/huaweiAktBbo-i386.out
Or find the package containing huaweiAktBbo-i386.out here
# ./huaweiAktBbo-i386.out
# rmmod usb-storage
The command above is to change HUAWEI E220 from storage mode to modem mode.
Plug out HUAWEI E220 then plug it in again, then edit /etc/smsd.conf
devices = huawei
logfile = /var/log/smsd.log
loglevel = 7
[huawei]
device = /dev/ttyUSB0
incoming = yes
baudrate = 115200
#pin = 1111
rtscts = no
cs_convert = no