Chapter 10: Packet over SONET Modules
Packet over SONET (POS) LEDs
138
SmartBits System Reference
Packet over SONET (POS) LEDs
Each POS module has a set of LEDs that are described in
Table 10-2. LED Functions for POS Modules
LED
Color/Status
Description
TX/INIT
Red
Green (flashing)
Link is not ready.
Frame is transmitted.
Off – Ready.
RX ERR
Red (flashing)
Green (flashing)
Rx frame is received with a CRC error.
Rx frame is received.
Off – Not receiving.
MGMT/
LOF
Yellow
Green (flashing)
Loss of Frame condition exists.
"Management" frame is received.
LOS
Yellow
Loss of signal (optical signal) condition exists.
TRIG/LOS
Green
Yellow
(POS-3505As)
When a triggered frame is received.
A loss of signal (optical signal) condition exists.
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