6
5.2 LED Indicator
There are 7 indicator LED on front panel.
From left to right is as following:
Name
Color
Status
Description
DAT
green
flick
E1 port has date receive and transmit
On/off
E1 port has no date receive and transmit
LNK
yellow
Flick/on Indicates Ethernet has connected
off
Ethernet has no connect
LOS
red
ON
E1 signal loss
OFF
E1 signal normal
LOF
reserved
TEST
yellow
ON
Under test status(ANA, DIG, REM, PATT pressed any)
OFF
In normal working status
PTOK
green
ON
PATT pressed, PATT test normal
OFF
PATT pressed, PATT test not normal
Wink
PATT pressed, PATT test has error code
PWR
green
ON
Power ON
OFF
Power not ON
5.3 loop-back button
There are four loop-back button on the front panel, they are as following from
the left to right,
ANA:
E1 Interface local-back loop, to check whether local device and its
connecting circuit correct
