internetcalls sound quality

DO;

Use a headset with a built in microphone. Headsets are available for purchase at most computer retailers and will dramatically improve sound quality.
Tell your friend to get a headset. Note that voice quality is affected by the equipment on both sides of the conversation. The best way to ensure high quality sound is to have [...]

internetcall

Internetcall offers free* phone calls all around the world. You have to download the free Internetcalls application and install the file to your computer. After installation, you are ready to make calls. Launch the program and enter your information and destination to call.
* means that although it is free, you need to have credits in [...]