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The single Interface card is the same but only has one port.
If only one port is to be used, you must use Port A (lower port). Pin 1 is at the top.
The two amber LEDs to the left indicate "Loss of Signal" on Port A or B and should be
extinguished if an active line is present. See the table below for additional information on
NAME
COLOR
Run
Green
Fail
Amber
(Yellow)
B (LOS)
Amber
(Yellow)
A (LOS)
Amber
(Yellow)
Diagnostic LED interpretation for the Telco Trunk Interface Cards
SECTION 2 – PREPARING THE HUB FOR INSTALLATION
TELOS 2101 USER'S MANUAL
B RUN
A FAIL
B
A
The Dual Telco Interface Card.
the diagnostic LEDs.
INDICATES
Off = Board Not Running
On = Normal Activity
Off = Normal Operation
On = Telco Interface Board failure
Off = Normal Operation
On = Loss Of Signal (carrier failure, Red Alarm or
Yellow Alarm) on B
Off = Normal Operation
On = Loss Of Signal (carrier failure, Red Alarm or
Yellow Alarm) on A
PART III
SERIES 2101 HUB
III-7
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