i manage to make call and receive call , IVR , GSM gateway less than 100
$.https://www.facebook.com/photo.php?fbid=451312488254098&set=a.435627683155912.115286.100001260518622&type=3&theater
see the pic, and let me know if it is useful to you..it is raspberry pi and 3G
usb dongle with voice
support.http://www.huaweidevice.co.in/Products/MobileBroadband/E303c.php
and also there are lots of usb dongle which are voice enabled and successfully
works with asterisk.around 40 $
mahendrakumarAlmightyTech
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