Elenco Electronics TWT-1K Assembly And Instruction Manual page 11

USING THE TELEPHONE LINE ANALYZER ON RJ-11 JACKS
Now that we have completed and tested the telephone line analyzer, you are ready to test wall plates that
have RJ-11 jacks with one or two lines. If wall plates with RJ-11 are not available, then you should use the
telephone line simulator Model TT-250. It will provide all of the conditions that would be found in the field and
are illustrated below.
The following is the procedure for testing a typical
one line RJ-11 jack:
Green
Figure 14
Red
Figure 15
No Light
Figure 16
1. Remove the phone wire from the
modular jack and insert the
smaller telephone plug of the
telephone line analyzer into the
telephone jack to be tested.
2. If the telephone line analyzer shows
LED 1 green, the telephone line
jack is working and it is wired with
straight polarity (see Figure 14).
The problem is in the telephone
cable going to the telephone or in
the telephone itself. The wiring in
the wall jack is correct.
DO NOT CALL THE
TELEPHONE COMPANY.
3. If the telephone line analyzer
shows LED 1 red (see Figure 15),
the modular jack is working with
reversed polarity. The wires are
reversed. A dial tone should still
exist, but this may be a problem
for some touch phones. Plug the
phone back into the wall jack and
lift the receiver. If a dial tone is
present, but you do not get tones
when dialing, the wiring at the wall
jack should be corrected.
technical data for wall jack wiring.
4. If the telephone line analyzer
shows LED 1 with no light (see
Figure 16), it indicates that the
line is open or wires are shorted.
Check the wall jack to make sure
a wire is not bent too far down,
broken, or touching another wire.
If the problem is not in the jack,
then you may need to call the
telephone company.
The following is the procedure for testing a typical
two line RJ-11 jack:
1 and 2
Green
1 and 2
Red
See
1 Green
2 Red
-10-
1. Remove the phone wire from the
modular jack and insert the
smaller telephone plug of the
telephone line analyzer into the
telephone jack to be tested.
2. LEDs 1 and 2 green (see Figure
17) indicates that both lines are
working and are wired straight
polarity. The problem is in the
cable going to the phone or in the
telephone.
Figure 17
3. LEDs 1 and 2 red (see Figure 18)
indicates both lines are working
with reversed polarity. The wires
are reversed on both lines and
may be a problem.
phone into the wall jack and lift
the receiver. If a dial tone is
present, but you do not get tones
when dialing, the wiring at the wall
jack should be corrected.
technical data for wall jack wiring.
Figure 18
4. LED 1 green and LED 2 red (see
Figure 19) indicates that line 1 is
wired with straight polarity and
line 2 is reversed polarity.
5. LED 1 no light, LED 2 green or
red. Line one is not operational.
6. LED 1 green or red, LED 2 no
light. Line two is not operational.
Figure 19
Plug the
See