The TEPI1 interface is part of the utlity grade universal multiplexer FOX615 which provides specificsolutions for power utility applications. TEPI1 has beelspecifically designed for distance protectionapplications. Therefore it provides exactly the featuresrequired by the application and fulfils the relevantteleprotection product standards such as IEC 60834-1and IEEE 1613 as well as EMC standards EN 61000-6-3 and EN 61000-6-2. The highly integrated FOX615solution with TEPI1 for distance protection applicationprovides many benefits for power utilities such as fastalarming in case of problems, full remote configuratiorand control possibilities using the networkmanagement system and higher availability due to lessindividual boxes and redundant channel routing.