title: Any free libraries to send/receive SMS, send/receive Calls using GSM Modem?
body: <p>I want to make a windows application in which I want to send ,receive and process SMS using GSM Modem( <a href="http://cgi.ebay.in/3G-USB-Modem-Huawei-E1550-High-Speed-3-6Mbps-CHEAPEST-/260675094112?pt=LH_DefaultDomain_203&amp;hash=item3cb1724660#ht_1873wt_1141" rel="nofollow">this one</a> ), It would be very helpful If you provide me link to any opensource library or application which do the same. I am good in MFC and Qt, so any C++ or C library or app reference would be much better. </p>
  
  <p>It would be great help, If you can tell me/Give some reference of how to do incoming call processing. I want to read user's keyboard input during call ( Like press 1 for Apple and press 2 for Microsoft ). As in next version I want to support this.</p>