User manual

3-17
Installing and Initializing the Module
3.5.5
Cable Routing Cable routing should be planned as if the path between all stations on the
network were free of obstructions. The next step is to modify the first
routing to account for obstructions, then calculate the amount of cable
needed.
CAUTION Observe all local and national electrical and fire codes when installing
wiring.
In general, there are three routes network cabling may take.
D Under -floor routing
D In-ceiling routing
D Surface duct routing
Any combination of these three routes may be used on a single network.
The choice is often determined by whether the building (or buildings) in
which the network is being installed is new construction, or is an existing
building. The following paragraphs describe some of the advantages and
disadvantages of each type of cable routing.
Under-floor Routing: For under -floor routing, the cable can be enclosed
within ducts or , with raised flooring, in the “open air .” Under -floor systems
enclosed in ducts are usually expensive, and while they are better
protected against unauthorized taps than are “open air” systems, they often
make future expansion of the network more difficult and expensive.
“Open air” under -floor cabling systems usually provide good access, and
allow maximum network expansion and flexibility .