Location and Mounting Requirements
The mounting possibilities for your Cisco VG450 Voice Gateway are:
- Rack-mount
- Bench-top
The mounting location must provide the following:
Temperature Control and Ventilation
The installation location (room, closet, or cabinet) for the Cisco VG450 Voice Gateway should always be well ventilated and provide adequate air circulation to ensure proper cooling. The room temperature should be maintained between 32 to 122°F (0 to 50°C).
Note |
The Cisco VG450 Voice Gateway chassis is designed for back and sides-to-front airflow. |
Enclosed Racks
Caution |
Enclosed racks must have adequate ventilation. An enclosed rack should never be overcrowded and should have louvers and a fan. |
If the Cisco VG450 Voice Gateway is installed in an enclosed rack with a ventilation fan at the top, make sure that heated air drawn upward from other equipment does not prevent adequate cooling.
If the chassis is installed using slide rails, check for blocked ventilation ports when it is in position in the rack or cabinet. Make sure that the ventilation ports of the Cisco VG450 Voice Gateway are not blocked.
Tip |
Baffles can help isolate exhaust air from intake air. Baffles also help draw cooling air through the cabinet. The best location for the baffles depends on the airflow patterns in the rack. You can test the airflow by experimenting with different equipment arrangements. |
Bench-Mounted
If the unit is placed on a bench-top, do not stack other equipment or paper on the chassis. Provide plenty of space for air circulation (front to back). Inadequate ventilation can result in overheating and damage.
Rack requirements
The following information can help you plan your equipment rack configuration:
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Allow clearance around the rack for maintenance.
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Enclosed racks must have adequate ventilation. Ensure that the rack is not congested, because the hardware generates heat. An enclosed rack should have louvered sides and a fan to provide cooling air. Heat generated by equipment at the bottom of the rack can be drawn upward into the intake ports of the equipment above it.
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When mounting a chassis in an open rack, ensure that the rack frame does not block the intake or exhaust ports. If the chassis is installed on slides, check the position of the chassis when it is seated in the rack.
If the Cisco VG400 Voice Gateway is installed in an enclosed rack with a ventilation fan at the top, make sure that heated air drawn upward from other equipment does not prevent adequate cooling.
Note |
Enclosed racks must have adequate ventilation. An enclosed rack should never be overcrowded and should have louvers and a fan |
If the chassis is installed using slide rails, check for blocked ventilation ports when it is in position in the rack or cabinet. Make sure that the ventilation ports of the Cisco VG450 Voice Gateway are not blocked.
Baffles can help isolate exhaust air from intake air. Baffles also help draw cooling air through the cabinet. The best location for the baffles depends on the airflow patterns in the rack. You can test the airflow by experimenting with different equipment arrangements.
Access to Chassis
Allow space at the rear of the chassis for cable connections. Also consider the need to access the chassis for future upgrades, maintenance, and troubleshooting.
Chassis grounding is provided through the power cable, which uses a standard grounding plug. However, the chassis also requires a reliable earth ground using the earth ground lug and hardware provided. For more information, see the Chassis Grounding section.
Power Source
A Cisco VG450 Voice Gateway with AC power supply autoselects either 100–127 volt or 200–240 volt operation. AC versions include a 6-foot (1.8-meter) electrical power cord. (A label near the power cord indicates the correct voltage, frequency, current draw, and power dissipation.)
Power Suppy Considerations
Cisco VG450 Voice Gateway requires significantly more power because of its high-density ports and OPX ‘Lite’ requirements.
This require a larger 48V battery backup that may need to be custom built.
To handle power failure conditions, an uninterrupted power supply (UPS) is needed. UPS is widely available in all markets, including emerging markets (due to prevalence of UPS for personal computers). Thus, a separate UPS for Cisco VG450 Voice Gateway is a viable option when the ISR/UPS is not co-located with it.
If you suspect that your AC power is not clean—if lights flicker often or there is machinery with large motors nearby—have a qualified person test the power. Install a power conditioner if necessary.
Warning |
Avoid using or servicing any equipment that has outdoor connections during an electrical storm. There may be a risk of electric shock from lightning. Statement 1088 |
Warning |
Read the installation instructions before you connect the system to its power source. Statement 1004 |
Warning |
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than:120 VAC, 15A U.S. (240 VAC, 10A international) Statement 1005 |
Warning |
The device is designed for connection to TN and IT power systems. Statement 1007 |
Warning |
This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means by security. Statement 1017 |