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1-4 WM-4T1i Module Installation and User Guide
Installing the WM-4T1i Module
Figure 1-2: WM-4T1i LEDs
Table 1-1 describes the LED behavior on the WM-4T1i module.
Table 1-1: WM-4T1i Module LEDs
LED Color Indicates
Status Off No power
Amber Module seated in chassis
Green Module powered up
Diag Green (blinking) Power-on Self Test (POST) is running
Off Normal operation
T1 port (1-4) Amber Near-end fault detected (for example, no cable)
Rapidly blinking
amber
Far-end fault detected
Slowly blinking
amber
Physical link present, but no higher-layer link (port
misconfigured or disabled)
Green Physical link present, higher-layer link established,
no traffic
Alternating green
and amber
Physical link present, higher-layer link established,
traffic present
Green (blinking) Loopback testing mode
10/100 port
(5,6)
Off No link present
Green Link present
Alternating green
and amber
Traffic present