RED ALM or Alarm LED

The presence of this RED Alarm LED is primarily for onsite service technicians or dispatches. It alerts technicians of major failures that require a physical replacement or removal of equipment. Most major G700 components controlled or monitored by the motherboard are a cause of illumination. This includes the VoIP Media Module, but not other Media Modules.

Note: The RED ALM LED lights for motherboard problems only. Scan for a RED ALM LED for problematic G700s and also scan all of the Media Module LEDs for any Media Module specific RED ALM LEDs.

Note: If the RED ALM LED is lit on a non-VoIP Media Module, check the G700 alarm screens and the MultiVantage alarm screens to determine where the fault lies.

The RED ALM or Alarm LED is on the top-left most corner of the LED Panel next to other important system LEDs (PWR, CPU, MSTR) as specified in Figure 16. The Alarm LED indicates the health of the G700 by lighting under two distinct circumstances:

• G700 hardware failure
• There are impaired functions of the Layer 2 Switching Processor, Media Gateway Processor, or VoIP engine
• The power supply voltage is out of bounds
• The unit is overheating
• When the G700 cannot communicate to any server

For example:

• The RED ALARM LED is lighted when two or more fans have failed to indicate catastrophic fan failure. Various warnings, alarms, and a graceful shutdown are performed based on the fan and thermal sensor conditions.
• The RED ALM LED is lit from the time power is applied until diagnostics pass.

The RED ALARM LED on the LED Panel is turned "OFF" under two distinct circumstances:

• When physical conditions such as temperature are rectified and return to normal or acceptable operating ranges
• In situations where the alarm is cleared manually