Using Media Filters - 3Com CoreBuilder 5000 User Manual

Using Media Filters

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Using Media Filters
3Com Token Ring products do not require media filters.
You may, however, need to use a media filter when attaching a DTE
device, only when the installed cable's impedance does not match the
Network Interface Card's (NIC) impedance. For example, you may try to
use UTP wiring (100 ohm impedance) with NIC cards that have STP
(150 ohm) output.
If you have a NIC that requires a media filter, we recommend the
3Com media filter (5201F-UTP), which exceeds IEEE specifications for
return loss, and provides robust performance with most NICs. Using
other media filters may cause excessive attenuation or other loss,
thereby reducing achievable link distances and reducing maximum
station counts.