3com 9150 Manual De Usuario

With Power over Ethernet (PoE) support, the same Category 5 
cable that connects your access point to the data network also 
provides its power. A single cable installation dramatically 
improves your choice of mounting configurations because you 
no longer need to consider AC power outlet locations. PoE 
support makes it easier than ever to overcome installation 
problems with difficult-to-wire or hard-to-reach locations.

Understanding the characteristics of the 802.11a and 802.11g 
standards can help you make the best choice for your wireless 
implementation plans.

Ratified in 2002, 802.11a operates at the 5GHz band and 
supports data rates at up to 54Mbps. Because there are fewer 
devices in the 5GHz band, there’s less potential for RF 
interference. However, because it is at an entirely different radio 
spectrum, it is not compatible with 802.11b and 802.11g.

The higher spectrum provides about 50m (164ft) of coverage. 
Consider 802.11a when you need high throughput in a confined 
space and you are:

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Running high-bandwidth applications like voice, video, or 
multimedia over a wireless network that can benefit from a 
five-fold increase in data throughput.