Does anybody know about USB Phones?

Internet Power Phone 200 Handset
Internet Power Phone 400 Deskset Key Phone
These are the usb phones used in organization.
Internet Power Phone 500 Series Desktop Speakerphone
Internet Power Phone 2000 - Standard Telephone Adapter
Internet Power Phone 5000 Secure IP Speakerphone
VoiceSmart-6014 USB Phone
VoiceSmart-IP400P IP Phone
VoiceSmart-6015 IP Phone

These are some of the Usb phones used in organisation..u can get some information in the following link.

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