ENGINEER TELEPHONE LINE
.[
51 .
.[61
.
0
Is the loop length l
a
Is there any 26 .
.
less than 2.1 kft?
@No
.AWG cable in the l No
a
l -
loop?
.
.
.
.-
.
Yes l
. .
l -
0
a
.
Yes l
L&l
step 9
.[91-
-[
71
Calculate the loop
resistance (DP 1002)
.[
81
0
l Is
the
resistance less
0
l
than
175 Ohm? . No
a
.
.
l Is the
PBXat
the ll
Doesthelooppass
l
Repair the problem.
. Central Office?
*
Yes l
the loop diagnostic
test? (DP 1003)
. No
0
.-
.. . .
. .