You will really have fun if you are able to make real phone calls on your computer through your favorite mobile or your ISP provider. Everything will be with a simple and free software.
Steps

Step 1. Have your modem handy

Step 2. Check if you can use your favorite SIM card in the modem

Step 3. Insert the SIM card inside the modem

Step 4. Download MOBILE PARTNER from the Internet or do a Google search to download it for free and install it on your PC or laptop

Step 5. Connect the modem to the USB of your computer and start the software
Advice
- You can use the call log to know the history of the calls.
Mobilll - It is a file that can be downloaded free of charge on the Internet (size: approximately 21 MB).