Chapter 1. Introduction

FRONT PANEL

As shown in Figure 1-1, the front panel of the DSU 56/64 contains eleven light emitting diode (LED) indicators that display DTE interface, network, and test status. These indicators are defined in the LED Identification section, below.

 

 

 

 

 

 

 

 

 

 

DSU 56/64

 

 

 

 

 

 

 

 

TEST

 

 

 

RS

CS

TD

RD

CD

ALM

DTE

LOOP

RDL

PTRN

ERROR

 

 

 

 

 

 

 

 

 

 

 

SELECT

TEST

 

 

 

 

 

 

 

 

 

 

Figure 1-1. DSU 56/64 Unit

LED Identification

DTE Status (Green)

Indicator

Definition

Source

 

 

 

RS

Request To Send

DTE

CS

Clear To Send

DSU

TD

Transmit Data

DTE

RD

Receive Data

DSU

CD

Carrier Detect

DSU

 

 

 

The active state for the status indicators (RS, CS, and CD) is On while the on state for the data indicators (TD and RD) represents a Space con- dition.

Network Status (Red)

ALM

ON indicates a problem on the local loop or within the DDS network.

OFF indicates normal loop and network conditions.

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DSU 56/64 User Manual

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Image 20
ADTRAN DSU 56 user manual Front Panel, Network Status Red

DSU 56 specifications

The ADTRAN DSU 56 is an essential device for businesses and organizations looking to establish reliable serial communication over digital circuits. A Data Service Unit (DSU) acts as a bridge, converting digital data from a Local Area Network (LAN) into a format suitable for transmission over telephone lines or other digital links. The DSU 56 is specifically designed to operate at 56 Kbps, making it a vital component in many networking setups where higher bandwidth is unnecessary.

One of the main features of the ADTRAN DSU 56 is its ability to support a variety of interfaces. It is equipped with both V.35 and RS-232 ports, allowing for flexible connectivity options to diverse networking equipment and configurations. This versatility ensures that organizations can easily integrate the DSU 56 into their existing telecommunications infrastructure.

The DSU 56 is built on advanced technologies that ensure efficient data transfer and reliability. It incorporates error correction mechanisms and extensive diagnostic capabilities, which help identify and troubleshoot issues quickly. This is particularly important in mission-critical applications where downtime can lead to significant operational disruptions.

In addition to reliable data conversion, the DSU 56 offers features like loopback testing and performance monitoring. These functionalities enable network administrators to assess the health and performance of the connection with ease. Loopback tests can be initiated locally or remotely, allowing for thorough testing of the entire data path without disrupting ongoing operations.

Another notable characteristic of the ADTRAN DSU 56 is its compact and robust design. It is built to withstand various operating conditions, making it suitable for deployment in different environments, including data centers and remote installations. The device is also energy efficient, contributing to lower operational costs.

The DSU 56 supports various protocols, such as Frame Relay and PPP, ensuring compatibility with numerous public and private network infrastructures. This adaptability makes it a valuable asset for businesses transitioning to digital communication systems or those seeking to enhance their existing setups.

In conclusion, the ADTRAN DSU 56 stands out as a reliable and versatile solution for organizations needing to facilitate effective data communication over digital circuits. Its robust features, combined with advanced technologies, position it well in the marketplace, making it a choice for businesses focused on maintaining high-quality connectivity.