Telephony Flashcards

Local CO switches are connected in a star topology to a ____

CO switches can be directly trunked to each other.

If a telephone call passes from one local service area to another, it is a ____________.

The local tandem switch will hand off a long distance call to its ____.

The bottom-most telephone switch in the switching hierarchy is the __________.

As a general rule, only a class 5 switch provides dial tone.

In the switching hierarchy, a class 1 switch is a ____.

In the switching hierarchy, a class 2 switch is a ____.

In the switching hierarchy, a class 3 switch is a ____.

In the switching hierarchy, a class 4 switch is a ____.

In the switching hierarchy, a class 5 switch is a ____.

A superior control and routing decision architecture called _______ has been in service since the 1980's.

A telecommunications network has three main parts: select all that apply.

Another term for the Access Network is the _______________.

F1 cables are buried underground because _________________

Telecommunication Cabinets are also called:

F1 cables cross connect to _________ in the SAI.

A Jumper Wire Interface (JWI) is a type of OPI.

The wiring device that performs the demarc function is the ___________.

The analog electrical signal is filtered to be in a frequency range from 300 Hz to 3300 Hz referred to as the ________________.

The two commonly available ISDN services are (Pick two).

Each 'B' channel in an ISDN circuit operates at __________.

DSL access is not available everywhere - it depends on the ____________.

A _____________ splits off the data portion to a high-speed data network, and passes the voice band to the CO Switch.

The Telecom Transport Network connects _______________

4-(and sometimes 6 or 8) wire trunks are called _______ trunks (choose all that apply).

An analogue trunk can carry only one duplex conversation at a time.

The technology where each conversation is assigned a different, non-overlapping frequency range is called __________.

According to the Nyquist Theory, a signal whose maximum frequency is 4000 Hz requires ________ samples per second in order to accurately reconstruct the signal.

Each Bearer channel of a PRI operates at 64Kbps because _________.

Telecommunications carriers use single DS0s in their transmission networks.

Pick the one statement that is completely correct.

TDM is an acronym for ____.

The number of DS0s in a T1 TDM frame are ____.

Pick the one piece of equipment not essential to the operation of a CO.

CO equipment is designed to operate on ____.

The purpose of the CO Air compressor is ____.

F1 cables enter and exit the CO by the way of ____.

Pick the one correct statement.

Riser cables are connected to F1 cables in the ____________.

The __________ provides the point of cross-connection between the Outside Plant (OSP) cable pairs and the office equipment (switch).

The side of the MDF that faces the switch is referred to as ___________________.

Small interface units called _______ provide the circuitry to connect the live (loop) to the bus and backplane architecture of the switch.

Historically, the telco owned all of the telephone wiring inside the customer premise.

Historically, the subscriber was not allowed to make any modifications to the inside wiring, including adding new jacks or telephones. This is still true today.

Modern datacom cable, such as Cat5, Cat5e and Cat6 are acceptable for use as telephone inside wiring.

Twisting pairs of wire together inside the inside wiring cable _______.

Each connection where another phone is connected to the loop is called a ________.

Each telephone set has an associated electrical measurement called a ________.

The number of standard telephone sets on a POTS loop should not exceed ____.

If there are too many telephone sets on a POTS loop, then ____.

Inside wiring cables that pass through enclosed ceilings must be ____ in order to meet fire regulations.

Fire stopping is intended to ____.

The Telco Building Entrance is ____.

The service provider terminates the cables brought through the building entrance utilizing ______ protection (pick 2).

Pick all of the devices where the distribution of dial tone in a building could start.

The central point in a building where all cables converge is the ____.

The ________ connects other floors' (IDF/TC's) of a multiple floor building to the MDF.

The ________ extends telecom services on the same floor to the other sections of a building (as with single floor complexes).

USOC is an acronym for ____.

In telecommunications, calls being handled by a switching system are referred to as ____.

The percent of time the server is working (carrying traffic) as opposed to waiting for a call is defined as (choose all that apply).

If an inbound call to a PBX encounters a busy signal or no answer, the call is said to be ____.

In Traffic Engineering, the time shown on a billing report is called the ____.

Which of the following is not a factor that determines switch capacity?

What factor does not influence operating time?