Front Panel; Led Identification; Dte Status (Green); Network Status (Red) - ADTRAN DSU 56/64 User Manual

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.
RS CS TD

LED Identification

DTE Status (Green)

Indicator
RS
CS
TD
RD
CD
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
1-2
RD CD ALM DTE LOOP
Definition
Request To Send
Clear To Send
Transmit Data
Receive Data
Carrier Detect
O indicates a problem on the local loop or within the
N
DDS network.
O indicates normal loop and network conditions.
FF
DSU 56/64 User Manual
DSU 56/64
TEST
RDL PTRN ERROR
SELECT

Figure 1-1. DSU 56/64 Unit

Source
DTE
DSU
DTE
DSU
DSU
TEST
61200062L1-1