Oracle MICROS 700 Series Site Preparation Manual page 103

on twisted-pair cabling systems, -568-C.3 covers fiber optic cable systems, and -568-
C.4, addresses coaxial cabling components.
The complete specification and related documents are published by Global
Engineering Documents (www.global.ihs.com).
If a customer requests a structured cabling system other than ANSI/TIA/ EIA-568-C, a
disclaimer should be drawn up absolving Oracle MICROS of responsibility for data
cable related problems.
Elements of a Structured Cabling SystemA structured cabling system divides premise
wiring into five basic elements. Four of these elements are shown in Figure 39. Each
component, including the fifth, Network Administration, is discussed in the following
paragraphs.
• Work Area
The work area encompasses all components between the faceplate and Ethernet
based device. This includes the patch cable between the faceplate and Ethernet
device. Each work area is served by a telecommunications closet or wiring closet
on the same floor.
• Horizontal Cabling
This section consists of the cabling between the work area and the
telecommunications closet. This includes the faceplates in the work area, the
cable run to the faceplates or patch panel in the wiring closet.
Horizontal cabling can use UTP or STP cables and connection hardware. The use
of a 110 connect system to terminate horizontal cables at the wall plate and patch
panel is recommended.
The maximum distance for any horizontal cable run is 90 meters (295 ft.)
independent of the cable type. 90 meters allows an additional 10 meters (33 ft.) for
patch cables in the work area and wiring closet.
• Computer Room or Telecommunications Closet
All buildings should include at least one telecommunications or wiring closet that
contains the hardware required to connect the horizontal cable runs from each
work area to the patch panels and hubs. Patch panels are key elements of any
structured cable system. Moves and changes are performed by moving a modular
patch cord on the patch panel. Other devices on the network are unaffected by a
change to an individual connection at the patch panel.
Use appropriate cable routing and dressing fixtures in the wiring closet to eliminate
stress caused by tension and to effectively organize cables.
• Backbone Cabling
Backbone cabling is the structured cabling element that provides interconnections
between multiple wiring closets. However, in a small system that is served by an 8,
12, or 16 port switch/router, a backbone cable is not required unless the POS LAN
becomes part of an existing on-site network or requires internet access.
Fiber is the recommended solution when distances between wiring closets is
greater than 100 meters.
• Network Administration
While not shown in the illustration, it is as important as any other element of the
system. Network Administration encompasses system documentation, security,
and backing up user data.
Chapter 26
Structured Cabling Systems
26-2