Receiving SMS with Kannel

I have successfully installed Kannel sms gateway on Ubuntu and can send message but cannot receive i have done this and its working perfectly well

group = smsc
smsc = at
modemtype = huawei
device = /dev/ttyUSB0
speed = 19200
my-number = +254718195766
sim-buffering =true—————–(Was Not There I Included it and it worked)
validityperiod = 167