CABLING SYSTEM GENERAL SPECIFICATIONS
The system provided shall be a universal cabling plant that will work
with any UTP network set up in the star configuration. There will be two types of UTP used
in this design; one is category 5 for data and the other is category 3 for voice. All
components and cable for both systems will be furnished by (name preferred manufacturer)
with all of the components and wiring matching to insure category 3 and category 5
compliance from the source through the wallplate. All data connections will be terminated
in the RJ45 configuration. The wiring sequence for all data jacks shall be 568B (standard)
or 568A (some people prefer).
This system shall be installed by a certified category 5 installer. The
installation shall conform to the "Current Building Wiring Standard" represented
as EIA/TIA-568 and shall meet all specifications set forth in those standards for
performance and characterization. This specification also governs work practices and
procedures which will be followed; it should be especially noted that all cables will be
installed high in the bay avoiding all electrical conduit, motors, lights, and other
possible sources of interference.
All patching shall be installed using the latest certified techniques
and shall contain no patch panels with over 48 ports. Each patch panel shall have
one two position ring run above it with the appropriate ring runs on each side. All
patching shall have strain relief mounted to the rear with cables mounted appropriately.
All fiber shall be manufactured by the XXX (customer specification)
Corp. The backbone or vertical riser that runs from the computer room from Main
Distribution Frame to the Intermediate Distribution Frame on the xxx floor shall be
Multimode "Premise Distribution Cable" and is FDDI grade. It is the typical
62.5/125 micron used in most applications and is assembled in a tight/loose buffer
configuration.
SCOPE OF WORK FOR GENERAL AREA
CABLE RUNS
Furnish and install (# of cables) category 5, 4 pair plenum cables run
from the Main Distribution Frame to (number of) wallplate locations as per layout
provided. All boxes will be set into the walls. Any block/brick exposed areas will have
the cables housed in surface raceway (indicate manufacturer preference).
WALLPLATES
Each standard office wallplate will contain two category 5 data jacks
(RJ45), with 2 category 3 voice jacks. Note the second data jack can be used for a
printer, fax, copier, or an ISDN line. The first voice jack is for the phone system with
the second jack for auxiliary connection such as modem, desktop faxing, or internet
connection.
PATCHING-(MAIN DISTRIBUTION FRAME)
It should be noted here that one of the biggest problems encountered
with a patching system is: manageability after the installation. The design we are
presenting requires more space and wire management components but will provide much better
system manageability. The frame will be set up so that the patch panel will be limited to
48 ports and will have a double spaced ring run installed above and below it as well as
vertical ring runs on each side of it. In practice this allows all of the ports to be
visible, after patching, as well as providing good path to the port for patch cords. All
patching will also have rear strain relief mounted to it for stabilized connection. The
frame will also have the ability to contain any system hardware deemed necessary.
TESTING
All lines to be tested with a continuity tester and all category 5
cables and components with a category five tester (Wavetek-Lantek Pro XL) to insure
quality of installation and provide the customer with a hard copy of each lines
performance. Each line shall be tested for wiring faults, length, attenuation,
capacitance, noise, and near end cross talk (NEXT). All lines shall meet or exceed cat
five standards.
DOCUMENTATION
We will label all wallplates, cables, and the patch panels with an
easily identifiable system, this will facilitate all adds, moves, and changes. We will
also furnish a drawing showing the location of all wallplates and the system patching.
SCOPE OF WORK FOR THE FIBER BACKBONE
FIBER RUN
The fiber will be one 12 strand fiber optic cable (type) and will be
run from the Main Distribution Frame in the computer room to the Sub Distribution Frame in
a remote location.
TERMINATION EQUIPMENT
The termination equipment will consist of one FMS (Fiber Management
System) panel cabinet (rack mountable), and one fiber optic 24 port patch panel in each
cabinet at both ends of the run.
TERMINATIONS
All 24 terminations will be made with (add preferred termination method
here) and shall be in the (ST or SC) configuration.
TESTING
Each strand of fiber will be tested both at 850 and 1300s
nms, the test shall be done in accordance with EIA/TIA 568A. This calculation works
out to be no more than a .5 decibel loss for the ~400run. The spec for each mated
pair of connections is a maximum of .75 db. Results of the tests will be provided.
FIBER RUNS
Furnish and install one dual strand optical fiber from the data
distribution cabinet on the floor to each of the 46 wallplates previously described. The
fiber will not be terminated on either end but will be coiled in the distribution cabinet
at one end and in each wallplate at the other end. See general specification section for
fiber information, also see the attachment showing the manufacturers specifications.