AN5116-06B Optical Line Terminal Equipment Hardware Description
4-12
Version A
Indicator LED Description
Table 4-15
The GC4B card indicator LEDs
Symbol Meaning
Color Status
Description
ACT Active
LED
Green
ON
The card is working normally
Blink
slowly
The card is initializing or the software is starting.
The communication link between the active
card and the standby card has not been
established yet
Blink
quickly
The card is executing a configuration command
or is establishing a communication link between
the active card and the standby card
OFF
The card has not been powered on or the
software has not been started
ALM
Alarm
indicator
Red
ON
The card is resetting, experiencing an alarm or
has failed to establish a communication link
between the active card and the standby card
OFF
The card is working normally
LNK1-4
Port status
LEDs
Green
ON
A remote ONU is connected and authorized
OFF
No remote ONU is connected or authorized
MS1-4
Active /
Standby
LEDs
Green
ON
The optical interface is active in a PON
protection group
OFF
The optical interface is the standby unit in a
PON protection group; or not configured with
any PON protection group
Key Description
Table 4-16
The GC4B card key
Symbol
Meaning
Description
K1
Reset key of the card
For card reset. May result in interruption of all
connected ONU services
