Table of Contents
Advertisement
Overview
LED
HDSL SYNC LED
HDSL ALM LED
I/F ALM LED
For information on loopback testing and loopback LED
indications, see the WorldDSL RS Rate Selectable HDSL
Line and Desktop Units user manual, section
This document can be downloaded from the ADC website at
www.adc.com.
6
UTU and ETU Front Panel LED Indications
Mode
Steady green
Slow flashing
Off
Steady red
Pulsing red
Off
Steady red
June 14, 2002
700-702-900-04, Revision 04
Description
HDSL loop is ready to transmit and
receive data across all spans.
HDSL loop acquisition is in progress for
local span.
HDSL loop is not configured.
Indicates:
• Loss of sync word (LOSW)
• Margin is below the set margin alarm
threshold
• Errored Seconds (ES) count is above
threshold on any span.
Pulses for every ES on any span.
Normal transmit or receive data is in
progress.
Loss of Clock (LOC) alarm due to loss of
TT clock (Nx64k timing) or external clock
(EXT timing).
UTU-702C and ETU-752C List 1
700-702-100-xx.
Advertisement
Table of Contents
