Lesson 7: Troubleshooting Telephone Wiring and Twisted- Pair Cable
ACTUAL UPDATED QUESTIONS AND CORRECT ANSWERS
A customer reports a problem of no dial tone (NDT). Look for a cable that runs under the carpet; it is likely that the cable has a short
Upon inspection, the technician notices that new from the carpeting tack strip.
carpeting has been installed. What should the technician
do next? Use a telephone test set to test for dial tone at each outlet.
Look for a cable that runs under the carpet; it is likely that the cable has a short
from the carpeting tack strip.
Use a digital multimeter (DMM) to test each circuit in the premises.
Use a twisted-pair cable tester to test for dial tone at each outlet.
What is the likely problem when there is dial tone on one An open circuit caused by a break in a conductor, poor contact in a modular
phone connected to an outlet, but not on two other connector, or an incorrect wire connection.
phones connected to two different outlets?
Reverse polarity of the tip and ring wire caused by a break in a conductor, poor
contact in a modular connector, or an incorrect wire connection.
A short caused by a break in a conductor, poor contact in a modular connector,
or an incorrect wire connection.
A ground fault caused by a break in a conductor, poor contact in a modular
connector, or an incorrect wire connection.
An open circuit caused by a break in a conductor, poor contact in a modular
connector, or an incorrect wire connection.
ACTUAL UPDATED QUESTIONS AND CORRECT ANSWERS
A customer reports a problem of no dial tone (NDT). Look for a cable that runs under the carpet; it is likely that the cable has a short
Upon inspection, the technician notices that new from the carpeting tack strip.
carpeting has been installed. What should the technician
do next? Use a telephone test set to test for dial tone at each outlet.
Look for a cable that runs under the carpet; it is likely that the cable has a short
from the carpeting tack strip.
Use a digital multimeter (DMM) to test each circuit in the premises.
Use a twisted-pair cable tester to test for dial tone at each outlet.
What is the likely problem when there is dial tone on one An open circuit caused by a break in a conductor, poor contact in a modular
phone connected to an outlet, but not on two other connector, or an incorrect wire connection.
phones connected to two different outlets?
Reverse polarity of the tip and ring wire caused by a break in a conductor, poor
contact in a modular connector, or an incorrect wire connection.
A short caused by a break in a conductor, poor contact in a modular connector,
or an incorrect wire connection.
A ground fault caused by a break in a conductor, poor contact in a modular
connector, or an incorrect wire connection.
An open circuit caused by a break in a conductor, poor contact in a modular
connector, or an incorrect wire connection.
