Developer's DescriptionBy Tilts VisiemCall any IP phone that supports SIP protocol.TiVi is a softphone for PC-to-PC and PC-to-phone calls. Calls can be made via registrar or directly to remote IP address. With TiVi phone you can call any IP phone that supports SIP protocol. It supports conference calls and file transfer. As an extra TiVi phone has instant messenger and address book.