Information Technology Reference
In-Depth Information
Telecommunications Closet
Work Area
2
Horizontal Cable ( 90 m)
3
1
(HC)
CHARACTERISTICS
Horizontal Cabling:
4 twisted pairs
24 AWG solid conductors
Thermoplastic insulated
Unshielded
100-ohm 15%
characteristic impedance
Other performance
characteristics per
Cat. 3, 4, or 5
Horizontal length:
90 m (295 ft.)
Patch Cords:
Same as horizontal cable,
except stranded conductors
and up to 20% higher atten.
Connecting cord and
Jumper length:
LEGEND
4 Pair UTP Cable:
Telecommunications
Outlet/Connector:
Transition Point (optional):
Mechanical Termination:
Cross-connect Jumper
or Patch Cord:
WA Equipment Cable:
1
Patch Cord or Jumper:
2
TC Equipment Cable:
+
+
10 m (33 ft)
3
1
2
3
Horizontal Cross-connect:
(HC)
FIGURE 3.2
A summary of the characteristics for TIA-568-C UTP cabling.
The original Systimax PDS system has been updated to reflect all of the TIA
standards. Original PDS is a comprehensive system that covers telecommunications
wiring from the building cable entry, through intermediate cable distribution or wire
centers, to the telecommunications outlet. It also encompasses campus distribution.
PDS uses either UTP wire or fiber-optic cable. Copper is used for horizontal wiring
to the workstations and fiber is used for vertical wiring between wiring closets. The
