Technical Requirements -
T/D Cabling Design Guide
Contractor perform this test before the cross connects to the telephone
backbone are installed: at any rate the telephone horizontals shall not be cross
connected to the Category 3 backbone during certification testing.
Using an automated cable tester and the criteria specified in ANSI/TIA/EIA
568A and EIA/TIA TSB 67 the following certification tests shall be performed on
all horizontal cables:
Routing: WSI outlet to T/D punch down position is as per contractor provided
documentation
Correct 4 pair Wire Map
Cable Length is acceptable
Attenuation in the specified frequency spectrum is acceptable
Near & Far End Crosstalk is at or below maximum allowed.
2. Category 3 UTP Telephone Backbon
e
Certification testing of telephone backbone circuits shall start with the equipment
cable connected to the WSI jack and end on the telephone MDF punch down
block. It is therefore required that the Contractor perform these tests after the
cross connects to the T/D closet telephone horizontals are installed
Using an automated cable tester and the criteria specified in ANSI/TIA/EIA
568A the following certification tests shall be performed on 10% of the pairs of
each backbone routed between a T/D closet and the telephone MDF.
Routing: WSI outlet to MDF punch down position are as assigned in the
Contractor provided documentation
Attenuation in the specified frequency spectrum is acceptable
Near & Far End Crosstalk is at or below maximum allowed.
3.
Fiber O tic Data Backbone
p
Certification testing of fiber optic backbones shall start on the input jack of a T/D
closet break-out box (or patch panel) and end on the output jack of a Computer
Room patch panel.
Using an Optical Time Domain Reflectometer and the criteria specified in
ANSI/TIA/EIA 568A the following certification tests shall be performed on all
strands of each backbone routed between a T/D closet and the Computer
Room.
Routing: for each strand, the T/D break-out box (or patch panel) jack position
and the Computer Room patch panel jack position are as assigned in the
contractor provided documentation.
Page 4-46
VBA Design Guide
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