- Works with both standard PSTN Line and PC through USB Port

- Compatible with Skype, MSN Messenger, Net2Phone, SJPhone and more

- Distinctive Ringtones to distinguish between standard phone calls and internet calls

- Free phone calls between internet users*

- Multiple handset compatible+

- Caller ID & Call Waiting compatible if supported by provider

*both users must use the same VoIP service Provider

+Compatible handsets only