# Environmental Specifications

This chapter provides information related to environmental considerations and storage characteristics associated with the ASR 5000.

This chapter includes the following sections:

- Operating and Storage Parameters
- Supported Environmental Standards
- Chassis Air Flow

Operating and Storage Parameters

Use the following information to plan your network installation for the ASR 5000 platform.
Table 1. Temperature, Humidity and Altitude Recommendations

Temperature
Operating | 0 degrees C to +55 degrees C
Storage | -40 degrees C to +70 degrees C
Humidity
Operating | 20 to 80 percent non-condensing
Storage | 10 to 95 percent non-condensing
Altitude
Operating | 197 ft. (60m) below to 13,123 ft. (4,000m) above sea level
Non-operating | 197 ft. (60m) below to 49,212 ft. (15,000m) above sea level

Supported Environmental Standards

The system has been successfully tested against the following environmental standards:

- Operational Thermal, Operating Conditions - GR-63 Criteria [72, 73]
- Airborne Contaminants, Indoor Levels - GR-63 Criterion [125]
- Operational Thermal, Short-term Conditions - GR-63 Criteria [72, 73]
- Storage Environments, and Transportation and Handling - GR-63 Criteria [69-71, 107-109, 124]
- Earthquake Zone 4 - GR-63 Criteria [110-112, 114, 115, 117, 119]
- Airborne Contaminants, Outdoor Levels - GR-63 Criteria [126, 127]
- Altitude - GR-63 Criteria [74, 76]
- Thermal Heat Dissipation - GR-63 Criteria [77-79]
- Acoustic Noise - GR-63 Criterion [128]
- ESTI 300 019 - Environmental conditions and environmental tests for telecommunications equipment

Chassis Air Flow

Airflow within the ASR 5000 is designed per Telcordia recommendations to ensure the proper vertical convection cooling of the system.

As shown in the figure below, the lower fan tray pulls ambient air into the chassis from the front and side intake vents located at the bottom of the chassis. The air is pushed upwards through the system and absorbs heat while passing over system components. The airflow through the chassis, as measured by the speed of the airflow across the various card slots, maintains an average of 290 feet per minute (8.2 meters per minute).
The upper fan tray pulls the heated air up through the chassis. The heated air then exits through the side and rear exhaust vents located at the top of the chassis.
Figure 1. System Airflow and Ventilation

CAUTION:

When planning chassis installation, ensure that equipment rack or cabinet hardware does not hinder air flow at any of the intake or exhaust vents. Additionally, ensure that the rack/cabinet hardware, as well as the ambient environment, allow the system to function within the operating limits specified in this chapter.