This conference gadget is a little different than most conference phones. Instead of being a speakerphone, it has four headphone and microphone ports so each user can plug in a headset to participate in the conference. This makes for less feedback, and also, you can choose to mute any one of the four users, or all at once. it connects using USB and and is an easy way for four people to conference on one Skype account. We imagine it would work for other VoIP as well.
SSP-M4SV Multi Conference for Skype [Akihabara News]