3Com V7122 Installation Manual page 42

E1/T1 Trunk Status LED Indicators
Table 10
Label LED Color Signal Description
Green
Red
T1/E1 Status 1 to 8
and
T1/E1 Status 9 to 16
On the front panel, 16 LEDs are provided for 16-span units and 8 LEDs are provided
for 1-span, 2-span, 4-span, and 8-span units. In the case of 1-, 2-, and 4-span units,
the extra LEDs are unused.
Ethernet LED Indicators
Table 11
Label LED Color LED Function
LINK Green
ACT Yellow
cPCI LED Indicators
Table 12
Label LED Color LED Function
PWR Green
SWAP READY Blue
During correct V7122 operation, the ACT LED is lit green and the FAIL LED is off.
42
Trunk is synchronized (normal operation)
Loss due to any of the following 4 signals:
LOS Loss of Signal
LFA Loss of Frame Alignment
AIS Alarm Indication Signal (the Blue Alarm)
RAI Remote Alarm Indication (the Yellow Alarm)
Link all OK
Transmit / receive activity
Power is supplied to the board
The cPCI board can now be removed.
The cPCI board was inserted successfully.
V7122 Digital Gateway Installation Guide
Bi-color
LED