1. Support Skype VoIP call with common telephone set;
2. Support Skype speed-dialing function;
3. Plug-and-play installation;
4. Use a single device to make/receive both; Skype and PSTN calls simultaneously
5. PC-to-PC, PC-to-PSTN, PSTN-to-PSTN calls are possible;
6. The telephone will ring when receive a call from USB line and PSTN line;
7. Incoming call prompt when USB line or PSTN line is even in talk;
8. PSTN or Skype call mode selectable using phone key;
9. Auto-detection and auto-switch to PSTN or Skype calls;
10. PSTN phone calls continue to operate even if PC or PUPA is powered down;
11. Support DECT, 2.4G, 900M and other cordless telephone, support exchange;
12. Best quality with full-duplex and echo-free