Thanks Tom for your replay ..
My experience with Asterisk and linux not very well, but I love googling .
I search over & over to until i reach my goal..
I am using Elastix 2.0 .. and i get chan_datacard worked on Elastix 2.0
The only problem i have is installing the usb-modeswitch-data ... i installed the usb-modeswitch ok .. but i dont know what is the problem with this usb-modeswitch-data ..
After googling .. i found a very nice script that get this USB modem identified on linux .. it called sakis3g (www.sakis3g.org
Now i have 3 problems ..
1. in any voice call the the other party have a high noise with my voice.
2. I cant get the USB Modem send me a caller ID (week Asterisk experience lol)
3. every time the server restarted .. i must re-run the sakis3g script to identify the USB Modem again, then i should give permissions to /dev/ttyUSB* again
Finally .. Tom, Forums made for experiences exchange, No one knows everything.. but it's good to try :)