http://www.vpn4voip.com - VPN for VOIP is a low cost SSL based VPN service specially designed for VOIP applications. It helps to bypass ISP blocking on VOIP calls utilizing the VPN tunneling technology and assigns mapped static public IP to VOIP gateways for wholesale traffic origination and termination applications. The service is QoS controlled, secure, flexible and reliable. It is claimed to be working 100% with any ISP - Only one open UDP port is needed to get the solution works. You can use their free deployed client software under Windows XP/2003 with two Ethernet cards which changes the PC into a soft VPN router, or just purchase their affordable standalone VPN4VOIP router. Client side can use any dynamic or private IP connections to use the service.