Chapter 7
Testing Twisted Pairs
Page 7-15
Test Results
Possible Solutions
NEXT test fails
intermittently
Check actual results to expected results.
Values may be borderline. Simply re-
terminating a connection could correct
problem.
Follow procedure for “NEXT test fails for one
or more pairs” to locate fault.
NEXT passes
on segment
from hub to
work area wall
plate, but the
workstation has
problems when
connected with
its patch cord
Patch cable may not be a twisted pair cable. A
common mistake is to use untwisted
telephone wire for data applications.
Patch cable could be wired incorrectly. Check
twisted pairs per the EIA/TIA pairing. Check
patch cable and rewire or replace as necessary.
Two pairs of the cable may be in use for data
and the other two pairs may be in use for
voice.
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