Vigitron Vi3010 Installation And Getting Started Manual page 36

Adjusting Existing
Category 5 Cabling
to Run 1000Base-T
Fiber Standards
If your existing Category 5 installation does not meet one of the test parameters for
1000Base-T, there are three measures that can be applied to try and correct the
problem:
1. Replace any Category 5 patch cables with high-performance Category 5e or
Catgory 6 cables.
2. Reduce the number of connectors used in the link.
3. Reconnect some of the connectors in the link.
The International Telecommunication Union (ITU-T) has standardized various fiber
types for data networks. These are summarized in the following table.
ITU-T Description
Standard
G.651 Multimode Fiber
50/125-micron core
G.652 Non-Dispersion-Shifted
Fiber
Single-mode, 9/125-
micron core
G.652.C Low Water Peak Non-
Dispersion-Shifted Fiber
Single-mode, 9/125-
micron core
G.653 Dispersion-Shifted
Fiber
Single-mode, 9/125-
micron core
G.654 1550-nm Loss-
Minimized Fiber
Single-mode, 9/125-
micron core
G.655 Non-Zero Dispersion-
Shifted
Fiber
Single-mode, 9/125-
micron core
Table 13: Fiber Standards
NOTE: That when testing your cable installation, be sure to
include all patch cables between switches and end devices.
Application
Short-reach connections in the 1300-
nm or 850-nm band.
Longer spans and extended reach.
Optimized for operation in the 1310-
nm band, but can also be used in the
1550-nm band.
Longer spans and extended reach.
Optimized for wavelength-division
multiplexing (WDM) transmission
across wavelengths from 1285 to
1625 nm. The zero dispersion
wavelength is in the 1310-nm region.
Longer spans and extended reach.
Optimized for operation in the region
from 1500 to 1600-nm.
Extended long-haul applications.
Optimized for high-power transmission
in the 1500 to 1600-nm region, with
low loss in the 1550-nm band.
Extended long-haul applications.
Optimized for high-power dense
wavelength-division multiplexing
(DWDM) operation in the region from
1500 to 1600-nm.
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