TELESiS is the world's first autonomous IP telephone exchange and touch color screen digital phones. It is the telecommunication designer and manufacturer of the first electronic, digital, ISDN, Pure IP, Hybrid IP telephone exchanges, the first signal converters, the first digital telephone, the first IP telephone and the first softphone software. Telesis telephone exchanges provide customers with the high quality communication possibilities of today's technology with its integrated equipment and superior capabilities. Telesis telephone exchanges supply the highest level of security with its closed source 100% native operating system, encryption capability and regular software updates. Telesis has been a pioneer in the sector with its uncompromising quality understanding, ethical rules, environmental approach, wide and educated service network, expert staff and high performance integrated equipped products.