Hello! In a small cooporate, I have 2 branch offices connected to the coorporate office, via VPN. I would that the employes call direct between the WKS using VoIP. (peer-to-peer). I will install earphone with microphone for users on this WKS for not disturb during conversations. So I would suggestions/opinios about free VOIP softwares for win2K/XP, for this function? I will first test Netmeeting! Netmeeting and Messenger use the standard H323 communication to pass voice? I still haven't analysed it with a sniffer! I see that "Cisco Ip phones" and "other Ip phones marks" use diferent ports for VoIP. The only common port is TCP/1720. Is this commom with VoIP softwares too (Not H323 standardized)? Morvan.