# Temperature and fan monitoring system

CG 6565E boards include a temperature and a fan monitoring system. If the board temperature becomes too high or the fan tachometer is under the warning threshold, oammon generates either a warning or a critical error message.

In addition, the OAM service generates the following events:

- OAMEVN_TEMPERATURE_WARNING

- OAMEVN_TEMPERATURE_ALERT

- OAMEVN_FAN_RPM_WARNING

For more information about these events, refer to the Dialogic® NaturalAccess™ OAM API Developer's Manual.

## Temperature warning

If the board temperature reaches the warning threshold, a warning error message displays and an OAM event (OAMEVN_TEMPERATURE_WARNING) is reported.

The following example shows a warning error message:

Mon Jun 20 09:54:52 - OAMEVN_ALERT INFO Board 0 "Name0"
Temperature (95.0C) has reached the warning level (95.0C) for sensor PowerPC (0x98)

If you receive a warning error message, no action is required.

## Temperature critical

If the board temperature reaches the critical threshold, a critical error message displays and an OAM event (OAMEVN_TEMPERATURE_ALERT) is reported.

The following example shows a critical error message:

Thu Jun 16 14:44:52 - OAMEVN_ALERT ERROR Board 0 "Name0"
Board Error 0x40f2: Temperature (100.0C) has reached the critical level (100.0C) for sensor PowerPC (0x98)

If you receive this error message, locate the cause of the problem and ensure that airflow to the board is sufficient.

If no action is taken, the board's temperature may continue to climb. When the board temperature reaches 105 °C, the board automatically shuts down to prevent damage.

## Fan warning

If the board fan tachometer reaches the warning threshold, an OAM event (OAMEVN_FAN_RPM_WARNING) is reported.