The Nx56/64 is one of several expansion modules for the TSU Multiplexer. This module should be selected when a V.35 DTE interface is required. The module installs in the slot(s) of the TSU Multiplexer. It is also available as a plug-on to any other of the available TSU expansion modules. Configuration is supported from the front panel of the TSU or the optional T-Watch Management software. Monitoring, performance requests and testing functions are also done from the front panel or T-Watch software.