Installation manual

ESI Communications Servers Hardware Installation Manual ESI-50
H.6
LED functions
The unit's various LEDs are designed to provide visual feedback as follows:
Power LED
The Power LED is located on the right side of the Base Cabinet, and is illuminated when power is being
applied to the system. This LED blinks periodically to indicate that the main processor is operational.
Port LEDs
The Port LEDs are located above their respective connectors on each installed port card. Each LED is
illuminated when any port on its associated port card is in use.
Note: Disconnecting a connector when its respective LED is lit will disconnect any of its ports that are in use.
Upon power-up, approximately five minutes are required for the system to configure. The Power and Port
LEDs will blink three times to indicate that the power-up sequence has been completed.
Note: When the LED on a DLC
1
is . . .
• . . . blinking, the T1/PRI circuit is out of service.
• . . . not lit at all, the T1/PRI circuit is in service but is idle.
• . . . lit solidly, the T1/PRI circuit and/or a station on the card are in use.
1
The DLC82 for the ESI-50 supports only PRI (not T1). DLCs for other ESI Communications Servers support both T1 and PRI. Please note also that
the DLC82 is for only the ESI-50 and not the ESI-50L.