Panasonic KX-TD500 Installation Manual page 50

System Outline
PRI23 Card (KX-TD50290) Operation
LED indicator on the PRI23 card lights when the system reset, PRI23 card local reset or PRI23
card fault occurs.
LED No. (Item)
D19 (FALT) Red
D20 (SYNC Red
ERROR)
D21 (RAI) Red
D22 (AIS) Red
D23 (SYNC) Green
D24 (DATA LINK) Green
D25–D27 Red
50
[LED Indication Table for PRI23 Card (KX-TD50290)]
Color Status
ON
OFF
ON
OFF
ON
OFF
ON
OFF
FLASH
ON
OFF
ON
OFF
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Contents
Card Fault
Normal
Clock Synchronization Error or Loss of Signal
(Red Alarm)
Normal
Receive Remote Alarm Indication signal
(Yellow Alarm)
Normal
Send Alarm Indication signal (Blue Alarm)
Normal
Clock Master at External Clock Mode
Layer1 Synchronization established (Detection
of Signal)
No Detection of Signal
Data Link established
No Data Link established
Not used or Reserved for future use.
Installation Manual