DESC: The Kentrox DataSMART T3/E3 IDSU (Intelligent Data Service Unit) provides economical and flexible access for high-speed data networking. The DataSMART T3/E3 IDSU provides powerful access for bandwidth-intensive Frame Relay and high-speed router applications. With a selectable T3 or E3 network interface, the DataSMART IDSU supports worldwide enterprise applications. And with a HSSI and V.35/EIA-530/X.21 data port, the versatile IDSU supports almost any data requirement.