61202129L1-1 TSU 120 User Manual xvTable of ContentsChapter 1 Introduction .................................................................................... 1-1TSU 120 Overview .................................................................................................... 1-1Standard Features in the TSU 120 ................................................................... 1-2TSU Option Modules ........................................................................................ 1-3Option Module Architecture ........................................................................... 1-4TSU 120 Configuration Applications .................................................................... 1-4Router, PBX, Video Conferencing Applications ........................................... 1-4Chapter 2 Installation ...................................................................................... 2-1Unpack, Inspect, Power Up .................................................................................... 2-1Receipt Inspection ............................................................................................. 2-1ADTRAN Shipments Include .......................................................................... 2-1Customer Provides ........................................................................................... 2-1Power Connection ............................................................................................. 2-2Grounding Instructions ........................................................................................... 2-2TSU 120 Interfaces ............................................................................................. 2-5Network Interface ...................................................................................... 2-5Network Test Interface .............................................................................. 2-5Nx56/64 Serial Interface (TSU 120e only) .............................................. 2-5DSX-1 (PBX) Interface ................................................................. 2-6DSX-1 Test Interface .................................................................... 2-6Chain Port Input ........................................................................................ 2-6Chain Port Output ..................................................................................... 2-610BaseT Interface (TSU 120e only) .......................................................... 2-6Power Up Testing .............................................................................................. 2-7Self-Test .............................................................................................................. 2-7Initialization ....................................................................................................... 2-7Set User Passcode ....................................................................................... 2-7Set Unit Identification ............................................................................... 2-7Set Chain Port Input .................................................................................. 2-8Chain-In (PC) ............................................................................... 2-8Chain-in/Chain Out .................................................................... 2-8