IMG 1010 - Front Panel Status LEDs
Each LED consists of two separate LEDs (red and green). The bi-colored LEDs can be selected to be red, green, orange (both red and green on) or blinking of any of the colors. All LEDs are under software control.
POWER LED
This LED that indicates power status. The green LED is hard wired to 3.3V while the orange LED is under software control.
LED Color | Description |
Off | No 3.3V power |
Green | 3.3V power available |
Orange | Power warning |
ALARM LED
This LED indicates alarm conditions.
LED Color | Description |
Off | Not applicable |
Green | No alarms |
Orange | Minor alarm |
Red | Major alarm |
SIG/TIMING LED
These four LEDs indicate T1/E1 spans statuses for the SIGNAL/TIMING 0, 1, 2, 3 connectors.
LED Color | Description |
Off | Span is out of service. |
Green | Span is in service and is receiving valid data. |
Orange | Receiving an orange alarm RAI |
Red | Span is in service and is receiving a red alarm or no span is connected. |
TIMING LED
This LED indicates whether the system timing is free running, locked on an external timing source or in hold over (lost lock on external timing source, but still synched to it).
LED Color | Description |
Off | Free running |
Green | Locked on external timing source |
Orange | Hold over (lost lock on external timing source, but still synched to it) |
ENET CTRL LED
These two LEDs indicate link and master control of the Ethernet control plane via the CTRL 0 and CTRL 1 connectors. The mastership is controlled via software while the link is under hardware control.
ENET DATA LED
These two LEDs indicate link and master control of the Ethernet data plane via the DATA 0 and DATA 1 connectors. The mastership is controlled via software while the link is under hardware control.
ENET SIG LED
These two LEDs indicate link and master control of the Ethernet signaling plane via the SIG 0 and SIG 1 connectors. The mastership is controlled via software while the link is under hardware control.
LED Color | Description |
Off | No link established |
Green | Link established and active port |
Orange | Link established and standby port |
Red | No link established, error |
AUX LED
These LEDs are reserved for future use.
SPAN STATUS LED
These 28 LEDs indicate the bearer span (0 - 27) statuses. For DS3, each span has it's own LED.
LED Color | Description |
Off | Span is out of service. |
Green | Span is in service and is receiving valid data. |
Orange | Receiving an orange alarm RAI |
Red | Span is in service and is receiving a red alarm or no span is connected. |