Cisco Cisco MGX 8880 Media Gateway Notas de publicación
5
Release Notes for Cisco MGX 8880 Software Release 5.3.10
OL-11148-02
Enhancements in Release 5.3.10
When the Relative Humidity is high, the air temp and dew point temperatures are very close. The
opposite it true when the Relative Humidity is low. When the dew point temperature and air temperature
are equal, the air is saturated with moisture. Locations with high relative humidities have air that is close
to being saturated with moisture. When saturated air cools it cannot hold as much moisture and can cause
moisture migration and penetration into the system. This moisture can cause corrosion of internal
components.
opposite it true when the Relative Humidity is low. When the dew point temperature and air temperature
are equal, the air is saturated with moisture. Locations with high relative humidities have air that is close
to being saturated with moisture. When saturated air cools it cannot hold as much moisture and can cause
moisture migration and penetration into the system. This moisture can cause corrosion of internal
components.
A storage environment that experiences temperature and/or humidity variations over a short period of
time can create a condensing environment, and this is considered an uncontrolled environment. An
environment that maintains constant temperature and humidity is considered and climate controlled
environment. A temperature and humidity controlled operating and storage environment is required at
all times to prevent condensation that can subsequently lead to oxidation of plated metal parts. Cisco
recommends that both long term and short term storage environments be climate controlled to prevent
humidity and temperature variations that create condensation. Buildings in which climate is controlled
by air-conditioning in the warmer months and by heat during the colder months usually maintain an
acceptable level of humidity for system equipment.
time can create a condensing environment, and this is considered an uncontrolled environment. An
environment that maintains constant temperature and humidity is considered and climate controlled
environment. A temperature and humidity controlled operating and storage environment is required at
all times to prevent condensation that can subsequently lead to oxidation of plated metal parts. Cisco
recommends that both long term and short term storage environments be climate controlled to prevent
humidity and temperature variations that create condensation. Buildings in which climate is controlled
by air-conditioning in the warmer months and by heat during the colder months usually maintain an
acceptable level of humidity for system equipment.
Note
Consult your facilities engineers to evaluate and ensure your storage environment meets the definition
of a non-condensing environment.
of a non-condensing environment.
To prevent oxidation, avoid touching contacts on boards and cards, and protect the system from extreme
temperature variations and moist, salty environments.
temperature variations and moist, salty environments.
Operating Environment Specifications
The following specifications define the operating environment:
•
Temperature, ambient
–
Minimum Temperature: 32 degrees Fahrenheit (0 degrees Celsius)
–
Maximum Temperature: 104 degrees Fahrenheit (40 degrees Celsius)
•
Humidity, ambient (non-condensing)
–
Minimum: 10%
–
Maximum: 85%
•
Altitude
–
Minimum: Sea level
–
Maximum: 10,000 feet (3,050 meters)
Non-operating and Storage Environment Specifications
The following specifications define the non-operating and storage environments:
•
Temperature, ambient
–
Minimum: -4 degrees Fahrenheit (-20 degrees Celsius)
–
Maximum: 149 degrees Fahrenheit (65 degrees Celsius)
•
Humidity, ambient (non-condensing)
–
Minimum: 5%
–
Maximum: 95%