3Com V3000 ANALOG, Installation Manual

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OMPONENTS
Installation
Requirements
Verify that you meet the prerequisites that are detailed in the following
sections before you install the NBX system.
3Com does not support more than one NBX system on a local area
network. You can connect NBX systems over a WAN (using VTLs or SIP
trusted endpoints), however, installing more than one NBX system on a
LAN can cause unpredictable results.
Electrical
Requirements
Verify that the site meets the following electrical requirements.
■
Each NBX chassis requires an electrical connection.
■
The NBX system should have its own breaker-protected circuit that
uses the standard, three-wire, grounded configuration.
■
Verify that there are enough outlets and circuit capacity in the chosen
location to supply power to the NBX chassis and any auxiliary
equipment that you install, such as a paging amplifier and an MOH
device. The label on each chassis lists the electrical requirements of the
system.
■
You can eliminate the power adapter for a telephone by using a
powered Ethernet cable. See
“Connecting Power to a 3Com
Telephone” in Chapter 3 for more information.
CAUTION: 3Com strongly recommends that you use UL listed surge
suppression devices for the telephones and the local telephone lines and
an uninterruptible power supply for each NBX chassis.
Environmental
Requirements
You can install the NBX system in any clean, dry, well-ventilated location.
Take these environmental guidelines into consideration:
■
The area must be safe from water damage. A wet basement, a utility
closet, or an area near a window are not proper locations.
CAUTION: Do not use the NBX system outdoors.
■
The area must be safe from physical interference. For example, do not
put the chassis where it might be struck by a swinging door or where
cables might be disturbed by a door or by people passing by.
■
Do not install the NBX system in an area that is exposed to strong
electromagnetic fields, dust, smoke, or airborne debris.