I broght a NetTalk Duo Wifi device from USA. It was working fine there in USA but is not working in Lucknow. My ISP is Airtel. I have a Modem+Router (model number 450TC1) supplied by Airtel. I tried all the following three methods to connect 'Nettalk duo wifi':
1. Connecting the Nettalk device directly to Modem+Router.
2. Connecting the device directly to Laptop (thru USB port).
3. Wifi connection.
None of the above is working. Any suggestions please ?