User's Manual

Physical Description
15
LEDs
The SDA-4S adapter provides LED indicators on the top panel, which are described in the table
below:
LED Color Status Meaning
On Physical link (10BaseT
or 100BaseT) between
SDA-4S adapter and
BSR
Blinking Traffic currently
flowing between SDA-
4S and BSR
UPLINK Yellow (100BaseT) or
Orange (10BaseT)
Off No link between SDA-
4S and BSR
On Physical link (10BaseT
or 100BaseT) between
SDA-4S and
subscriber's Ethernet
network
Blinking Traffic currently
flowing between SDA-
4S and subscriber's
Ethernet network
1, 2, 3, 4 Yellow (100BaseT) or
Orange (10BaseT)
Off No link between SDA-
4S and subscriber's
Ethernet network
On Power received by
SDA-4S
POWER Green
Off No power received by
SDA-4S
The figure below displays the LEDs which are located on the top panel of the SDA-4S Type II
adapter: