Block 10

Question 0

Newer telephone systems

Answer 0

VOIP Voice over Internet protocol
ISDN integrated services digital
DSL digital subscriber line
Mobile cell phone phone

Question 1

What encompasses the general use of equipment to provide voice communication over distances, with or w/o connecting wires?

Answer 1

Telephony

Question 2

Which 3 mediums do sound transmit through

Answer 2

Solid
Liquid
Gas

Question 3

What is the Most commons medium ?

Answer 3

Gas

Question 4

The number of repetitions per second of a complete sound waveform is called ?

Answer 4

Frequency

Question 5

What is frequency measured in ?

Answer 5

Hertz

Question 6

All voice sounds are ___________.

Answer 6

Complex

Question 7

The sound of the normal speaking voice contains fundamental frequencies between _______________.

Answer 7

300 and 3400 Hz

Question 8

From the Standpoint of voice communication…. What are two very important qualities affect the design and construction of telephones, telephone lines and equipment…

Answer 8

Frequency &

Amplitude

Question 9

What determines the vocal range (highest and lowest pitches that a person can produce).

Answer 9

Frequency

Question 10

What is the fullness or quality of sound?

Answer 10

Amplitude

Question 11

What are the two parts of the telephone designed to transmit and receive voice communication over telephone wires?

Answer 11

Transmitter and receiver

Question 12

What converts sound waves into electrical waves

Answer 12

Transmitter

Question 13

Converts electrical into sound waves and

where you hear the distant ends voice over telephone

Answer 13

Receiver

Question 14

The physical path telecommunication circuits take from the central office to the customer location.

Answer 14

Telephone distribution system

Question 15

Where do telephone lines originate from ?

Answer 15

Telephone switch

Question 16

Each line is physically connected to the

Answer 16

Horizontal side of a (MDF)

Question 17

The physical building used to house all the cabling and equipment ?

Answer 17

Central office

Question 18

What are the two wires on A DC loop

Answer 18

Tip and ring

Question 19

What is the limitation to the transmission of sound?

Answer 19

Distance

Question 20

___________ contained in voice signals enable us to distinguish the voices of different people and to make the voice expressive of feelings such as gladness, sorrow, and anger.

Answer 20

Different harmonics

Question 21

What does 16- 20,000 Hz refer to?

Answer 21

Total range of hearing

Question 22

What frequencies are limited to 200- 2700 Hz

Answer 22

Ordinary conversation/ telephone

Question 23

What does a telephone system include

Answer 23

• individual telephone
• outside plant cable
• telephone connection equipment

Question 24

What connects telephone stations to a telephone exchange or interconnects another telephone exchange

Answer 24

Outside plant cable

Question 25

___________ are special circuits that connect one exchange to another (Another station around the world )

Answer 25

Trunks

Question 26

When the telephone system was originally developed, the power source for each telephone was known as a ______________________

Answer 26

Local battery

Question 27

When the telephone system originated, A __________ was used for the transmit energy and a ___________ ___________ was used to generate the AC signaling energy.

Answer 27

Battery Crank generator

Question 28

Most telephone system use a _____________ where batteries located at the central office provide all the battery and ground potentials needed to operate the network connected to that Co.

Answer 28

Common battery system

Question 29

How many volts is the talk battery

Answer 29

-48 VDC

Question 30

How many volts does it take to ring the ringer

Answer 30

90 VAC

Question 31

What houses the primary source of power ? (Also known as the hub of all switching activities)

Answer 31

Central office

Question 32

What are the two types of emergency power sources normally used by the central office ?

Answer 32

Storage batteries | Standby AC generator

Question 33

When the handset of the telephone is resting in its cradle ..contacts of hook switch are open

Answer 33

(RIC) receiver in cradle

Question 34

When you remove the handset from the cradle, hook switch contacts are closed.

Answer 34

(ROH) Receiver off hook

Question 35

Older telephone sets use ___________ that sends dial pulses to the central office.

Answer 35

Rotary dials

Question 36

Rotary dials open and close the local loop circuit at a __________.

Answer 36

Times rate

Question 37

Touch- tone sets use _________ to send a telephone #.

Answer 37

DTMF) Dual tone multi-frequencies

Question 38

What is the ringing signal/ voltage to activate the ringer on the called phone ?

Answer 38

90 VAC

Question 39

What voltage establishes a talk path ?

Answer 39

-48 VDC

Question 40

____________ gives you the ability to hear your own voice through the receiver.

Answer 40

Sidetone

Question 41

What are the 6 major telephone components ?

Answer 41

``` Handset Network Hook switch Ringer Dial Housing ```

Question 42

The part of the telephone that you talk and listen ? This is where the transmitting and receiving takes places .

Answer 42

Handset

Question 43

Known as the heart of the telephone

Answer 43

Network

Question 44

What does the network consist of

Answer 44

Resistors Varistors Capacitors Transformer

Question 45

All circuits of the telephone pass through the ________.

Answer 45

Network

Question 46

The ____________ is called the on/off switch of the telephone.

Answer 46

Hook switch

Question 47

Ringing voltage is

Answer 47

90 VAC

Question 48

What protects the dial, hook switch, ringer and network ?

Answer 48

Housing

Question 49

What are the 3 types of telephone ?

Answer 49

Single-line desk phone (2500) Single-line wall phone (2554) Multi-line (m5009) business set

Question 50

This phone had the capacity to handle one central office line, connected to the wall jack by a mounting cord , also known as a line cord

Answer 50

Single-line desk phone 2500

Question 51

This phone is Mounted on a wall and is used mainly as entry phones and in warehouses on most military installations..

Answer 51

Single line wall phone 2554

Question 52

The basic digital telephone installed by cyber transport technicians ?

Answer 52

M5009

Question 53

What are the basic features of a business set?

Answer 53

Automatic prime directory number selection On hook dialing Listen on hold

Question 54

The fixed keys of a m5009

Answer 54

Call hold Call release Volume control Dialing

Question 55

What feature allows you to answer a coworkers incoming call from your telephone set

Answer 55

Call pickup

Question 56

What are the four major subsystems of the digital voice switch ?

Answer 56

Supernode or supermodel SE Maintenance and administration area Network modules Peripheral modules

Question 57

What are the two most common digital voice systems

Answer 57

Supernode and Supernode SE

Question 58

What are the two hardware elements that the SuperNode and SNSE have ?

Answer 58

DMS Core DMS Bus