1 - TVSAssistant - Panasonic VPS administration software for TVS50 Voice Processing System. 1.1.0.4 The TVSAssistant program is designed for the most simple and convenient setting of Panasonic Voice Processing System (KX-TVS50) parameters. With the help of TVSAssistant you can easily and quickly program and manage your Panasonic Voice Mail Systems. License: Shareware OS: Windows Size: 1619 KB