interested to do the project
thanks
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Hello! I am fully understood the description and I am interested about the project you have posted..
I can make you able to send/receive calls through the USB dongle Like [Huawei E1550]
it can be possible by install the USB dongle to normal PC OS [Windows 7]
and configure the USB dongle to make it GSM Gateway and connect it with your asterisk :)
You can Send/Receive calls using any sip Softphone like Zoiper or Xlite for iOS or Android or PC
You can also use IP Phones
Note: SMS send/receive is not available
If you are interested so contact me..