Over 40,000 people downloaded IPhone during that first week. As of the date of this report, we estimate that over 600,000 copies have been distributed to end-users. VocalTec's rollout of IPhone remains one of the few clear instances where a Net based and distributed application was compelling enough to open a lot of wallets around the world. And the server side has since evolved into it's current structure of 16 servers. In this context, full duplex means that a user can talk and listen at the same time.
Conventional telephones are full duplex.
Finally, VocalTec has recently entered the audio on demand side of VON with Iwave. We will cover Iwave in detail in another NetWatch Tech Report. It performs solidly and the VocalTec marketing scheme is brilliant. Give it away. The possible downside is that buyers often equate quality with price, and free software is seen as having zero value.