Telephone Home Wiring Conventional

All telephone cables are labeled with either a level or category (CAT) number that designates the cable's performance criteria. How do CAT-1, CAT-2, and CAT-3 cables compare to CAT-5e and higher cables?

CAT-1 through CAT-3 are used only for voice applications; CAT-5e and higher are used for voice and data.

A modular plug contains four, six, or eight pin positions. Each position is numbered and is used to terminate a specific tip or ring wire from a quad or twisted-pair cable. How are the pins on a modular jack numbered?

From left to right, with the locking tab down.

Which wiring topology starts at the telephone distribution device, uses one twisted-pair cable to route through a customer premises from one modular jack to the next, uses a separate twisted-pair cable to route a modular jack from another modular jack, and terminates at the last modular jack location?

Hybrid

When interpreting test results on the VDV II Pro, what does it mean if both rows of pins on the light emitting diode (LED) display are identical?

It indicates straight-through wiring and that the cable tested is correctly "pinned" and electrically continuous without open or short circuit conditions.

When locating a short circuit using a telephone test set, open one side of the telephone line at any location and place the telephone test set in the loop-one lead connected to each side of the opened line. a loud click can be heard on which side of the fault if the circuit is closed?

The battery side of a fault.

What is the difference between the wiring configurations for a residential, 8-position, 8-contact (8P8C) modular plug and jack in the Universal Service Order Codes (USOC) and ANSI/TIA/EIA 570-B?

The placement of pair numbers 3 and 4.

What is the likely problem when there is dial tone on one phone connected to an outlet, but not on two other phones connected to two different outlets?

An open circuit caused by a break in a conductor, poor contact in a modular connector, or an incorrect wire connection.

In a home that has an addition, what type of wiring topology is it most likely going to require?

Hybrid topology.

What is the maximum amount of wire to be untwisted to maintain CAT-5E electrical characteristics?

1/2 inch.

When installing a modular telephone jack by mounting and wiring the jack using a screw-down post at the customer premises, how much insulation should be stripped from each individual copper conductor with a wire stripper?

1/2-inch to 3/4-inch.

Which category of cable is best suited for datacenter and server-to-switch links?

CAT-8

Using a 77HP-G tone generator in the Off/Polarity position to test a telephone line for voltage and polarity, what does a bright green light emitting diode (LED) indicate?

A clear working line with correct polarity.

How is silver satin cable used to connect telephone equipment to wall outlets typically pinned?

Reversed at opposite ends, or cross-pinned.

In the customer premises, what could cause some dual tone multifrequency (DTMF) touch-tone telephones to have continuous dial tone caused by polarity reversal, but not other DTMF telephones?

The telephone wiring polarity is incorrect, and the customer has a mix of older and newer DTMF touch-tone telephones.

In unshielded twisted-pair (UTP) cable, what is the term that describes when an information-carrying conductor makes contact with a grounded conductor?

Ground fault.

Which wiring configuration is only used for voice systems and should never be used when wiring modular data plugs or jacks?

Universal Service Order Codes (USOC)

How should the digital multimeter (DMM) be used to troubleshoot problems in the telephone wiring?

Use the voltmeter function; both the network interface device (NID) and the embedded multimedia terminal adapter (EMTA) provide a steady on-hook voltage.

After resolving the problem with the premises wiring issue, which of the following is the next step in the six-step process that the technician should take?

Verify that the problem has been resolved and that phone service is running perfectly on all phones.

When routing and attaching interior unshielded twisted-pair (UTP) cable, what is the minimum separation distance you should maintain between any telecommunications or data cable and electrical power conductors?

2 in.

What is the first step in prequalifying (i.e., inspecting and evaluating) a new customer's existing broadband cable service?

Determine whether the customer has cable video service.

With the Fluke TS19 telephone test set, what does placing the Hi Z/Ring/Talk switch in the "Talk" position establish?

Establishes an off-hook condition for dialing and talking.

In accordance with requirements set by the National Electrical Code (NEC), several different cables types can be used for residential inside wiring. What is a CMR cable?

A riser-rate unshielded twisted-pair cable.

If the telephone wiring is in the bus topology and the twisted-pair cable tester is connected at the embedded multimedia terminal adapter (EMTA) with the remote unit connected to the last outlet in the loop, what is the quickest way to locate the incorrectly wired outlet if the tester indicates a wiring error?

Break the loop into smaller sections and retest the two sections to identify which one has the wiring error. Continue to divide the section with the error into smaller sections until the wiring error is identified.

What is the first step in prequalifying (i.e., inspecting and evaluating) a new customer's existing telephony service?

Locate all active telephones and jacks.

Which type of twisted-pair inside-wiring installation tool helps bend and wrap the tip and ring conductors of the twisted-pair, inside-telephone wiring around the tip and ring binding posts on a network interface device (NID)?

Long-nose pliers.

When using the VDV II Pro, if both two identical Pins are identical and there is a "0" under one of the pins, what does this mean?

Open or break is in the electrical path.

What component is built into the VDV II Pro and is used when testing for length measurements in coaxial and twisted-pair cable?

Time domain reflectometer (TDR)

What is one operation to check after adding a new modular telephone jack?

Inbound call capability.

When using an inductive amplifier probe to identify a pair of wires, what is the purpose of shorting the leads of a tone-carring pair?

The short cancels the induced tone on the pair of wires, thus the correct pair is identified when the tone disappears.

How does the insulation displacement connector modular telephone jack differ from the screw-down post modular telephone jack?

The wires are connected using IDC termination slots, which hold the twisted-pair wires.

A customer reports a problem of no dial tone (NDT). Upon inspection, the technician notices that new carpeting has been installed. What should the technician do next?

Look for a cable that runs under the carpet; it is likely that the cable has a short from the carpeting tack strip.

When inserting conductors into modular plugs on a crossover telephone cord, how should the conductor colors be crimped on each end of the cord?

One end: Red and green for Pair 1, and black and yellow for Pair 2. Other end: Green and red for Pair 1, and Yellow and black for Pair 2.

If there are problems with a customer's telephone line, which equipment should be used to monitor a telephone line, check line polarity, place and receive calls, and troubleshoot various faults?

A telephone test set.

Topology refers to the arrangement used in routing and connecting inside wiring to the network interface device (NID) or distribution device. How is the star topology arranged?

A separate twisted-pair cable is routed to each modular jack from the NID.

When performing a wire identification test, using a 77HP-G tone generator and the 200EP-G inductive amplifier probe to locate a tone signal at any point along a cable, distribution device, or at a modular telephone jack, how do you identify the wire?

By touching the tip of the inductive amplifier probe to the signal-carrying conductor.

What should be checked as a possible cause of hum on a customer's telephone line?

Shielding problems in the station wiring, poor terminations, or poor grounding and bonding connections.

If a residence contains many modular jacks, a distribution device may be used in addition to the network interface device (NID). What components are contained in a distribution device?

Tip and ring screw or punch-down terminals, which are used to connect the inside wiring.

After mounting and wiring a new modular telephone jack in a star installation, where should the unshielded twisted-pair (UTP) cable from the new modular jack be connected?

To the tip and ring screw terminals or insulation displacement connection (IDC) on the telephone distribution device.

When troubleshooting a modular wall jack that is connected to the telephone using an insulation displacement connection (IDC), what should be used to gain electrical access to the wall jack's pins?

A modular plug break-out adapter (banjo).

Which of the following topologies starts at the network interface device (NID) and routes through the customer premises from one modular jack to the next?

Bus topology.