Just install the application on your PC and if want to PDA and you are ready to page or call soomeone. This P2P walkie-talkie with presence and direct calling solution for LANs and WLANs requires zero setup and configuration and is completely serverless. iTalkie was designed based on feedback from business customers that required an inexpensive, easily deployable and maintainable solution. This product is ideal for multi-site organizations with for low-number of terminal per site. Selected Features: One to many paging (PTT); One to one direct calling (VoIP); Presence indication; Up to 999 channels with Emergency channel and channel scanning; High voice quality with echo canceling. This self-configuring solution is also uniquely suited for mesh networks and wherever there can be no single point of failure for communications. This version is the first release on CNET Download.com.