Adtran Atlas 800 Series Quad USSI X.21/V11 Module 4200261L3

Atlas 800 Series Quad USSI Module, X.21/V.11 4200261L3 Description: The Adtran 4200261L3 provides four X.21 universal synchronous serial interface (USSI) connections for an Atlas 800 series gateway. The module supports Nx56/64 Kbps operation for up to 2.048 Mbps operation across each of the 4 ports. The Adtran 4200261L3 can support both frame relay emulation and passthrough in an Atlas 830 or 890. Adtran 4200261L3 Features: Provides four X.21/V.11 synchronous serial ports Each module supports one interface type on all four ports Each port supports Nx56/64 Kbps operation up to 2.048 Mbps Supports Frame Relay emulation and passthrough when used in ATLAS 830 and ATLAS 890 chassis