Chapter 1. Introduction

Features

A DS1 interface and an Nx56/64 DTE serial interface port.

Easy configuration capabilities using simplistic menus displayed in a Liquid Crystal Display (LCD) window operated by a front panel keypad.

Timing is selectable from the network, from the Nx56/64 DTE port, or internally.

All ones, 3:24, 511 and 1:8 Test Patterns.

Extensive self test and monitoring provides assurance of proper operation.

Flexible channel allocation (any starting channel and alternate or contiguous).

Interfaces

The TSU is equipped with four interfaces. See Figure 1-3.

Network DSI interface per AT&T 621411

Nx56/64 serial V.35 high speed interface

Control input (RS232) / Chain port input

Chain port output

PC or Modem

 

 

 

 

 

 

 

Control

Chain

Chain

Chain

 

Input

 

Output

Input

 

Output

 

NI

TSU

NI

TSU

Network

Nx56/64

 

Nx56/64

 

Figure 1-3. TSU Interfaces

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TSU User Manual

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ADTRAN T1-FT1 user manual Features, Interfaces