Key Features: 1 Support PC-to-PC and PC-to-phone operation 2 Driver built-in, no need addtional driver 3 USB interface PnP , USB1.1 compatible, no need sound card. 4 No external power required 5 Complies with H.323, MGCP, SIP protocol 6 Caller ID function of VoIP calls . LED indicates USB connection state plus off-hook condition. 7 Acoustically isolated speaker and microphone to eliminate echo. 8 Pop up Skype message window. 9 Pop up Sendfile window. 10 Re-dial the last call out number 11 Open the voicemail. 12 Offer all kinds of rings for choice. 13 Mute control function when talking. 14 Also compatible with other PC-based softphone applications,such as MSN, Yahoo Message, Xten ,MediaRing, Net2phone, Dialpad and etc, or Customized hand phone casing designs available.
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