MR6400 Openwrt Sim ready and registered but not connected

Dear All,

I typed the bellow:

root@OpenWrt:~# gcom -d /dev/ttyUSB0
SIM ready
Waiting for Registration..(120 sec max)
Registered on Home network: "Mobily-KSA mobily",2
Signal Quality: 22,99

It seems it is connected i created a interface with protocol UMTS/GPRS/EV-DO
and modem device /dev/ttyUSB0
service type UMTS/GPRS
and i already uploaded my apn.

But i am not able to make it connect.