Support any VoIP applications
Support any software
Built-in sound card, no need to install driver
No external power required
Echo cancellation, noise reduction
Full duplex communication
Free phone calls among PC users
yahoo/skype/voip dialer out can facilitate calls to regular phone No.
Compatible with firewall and NAT with virtual IP
Plug and play installation operating without any external power adaptor
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regards,
DBChhangchha,
http://chhangchha.com