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Cyber Trans > Block 10 > Flashcards

Block 10 Flashcards

0
Q

Newer telephone systems

A

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

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1
Q

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

A

Telephony

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2
Q

Which 3 mediums do sound transmit through

A

Solid
Liquid
Gas

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3
Q

What is the Most commons medium ?

A

Gas

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4
Q

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

A

Frequency

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5
Q

What is frequency measured in ?

A

Hertz

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6
Q

All voice sounds are ___________.

A

Complex

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7
Q

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

A

300 and 3400 Hz

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8
Q

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

A

Frequency &

Amplitude

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9
Q

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

A

Frequency

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10
Q

What is the fullness or quality of sound?

A

Amplitude

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11
Q

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

A

Transmitter and receiver

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12
Q

What converts sound waves into electrical waves

A

Transmitter

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13
Q

Converts electrical into sound waves and

where you hear the distant ends voice over telephone

A

Receiver

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14
Q

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

A

Telephone distribution system

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15
Q

Where do telephone lines originate from ?

A

Telephone switch

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16
Q

Each line is physically connected to the

A

Horizontal side of a (MDF)

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17
Q

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

A

Central office

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18
Q

What are the two wires on A DC loop

A

Tip and ring

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19
Q

What is the limitation to the transmission of sound?

A

Distance

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20
Q

___________ 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.

A

Different harmonics

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21
Q

What does 16- 20,000 Hz refer to?

A

Total range of hearing

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22
Q

What frequencies are limited to 200- 2700 Hz

A

Ordinary conversation/ telephone

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23
Q

What does a telephone system include

A
  • individual telephone
  • outside plant cable
  • telephone connection equipment
24
Q

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

A

Outside plant cable

25
Q

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

A

Trunks

26
Q

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

A

Local battery

27
Q

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

A

Battery

Crank generator

28
Q

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.

A

Common battery system

29
Q

How many volts is the talk battery

A

-48 VDC

30
Q

How many volts does it take to ring the ringer

A

90 VAC

31
Q

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

A

Central office

32
Q

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

A

Storage batteries

Standby AC generator

33
Q

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

A

(RIC) receiver in cradle

34
Q

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

A

(ROH) Receiver off hook

35
Q

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

A

Rotary dials

36
Q

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

A

Times rate

37
Q

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

A

DTMF) Dual tone multi-frequencies

38
Q

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

A

90 VAC

39
Q

What voltage establishes a talk path ?

A

-48 VDC

40
Q

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

A

Sidetone

41
Q

What are the 6 major telephone components ?

A 
Handset
Network 
Hook switch 
Ringer
Dial
Housing
42
Q

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

A

Handset

43
Q

Known as the heart of the telephone

A

Network

44
Q

What does the network consist of

A

Resistors
Varistors
Capacitors
Transformer

45
Q

All circuits of the telephone pass through the ________.

A

Network

46
Q

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

A

Hook switch

47
Q

Ringing voltage is

A

90 VAC

48
Q

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

A

Housing

49
Q

What are the 3 types of telephone ?

A

Single-line desk phone (2500)

Single-line wall phone (2554)

Multi-line (m5009) business set

50
Q

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

A

Single-line desk phone 2500

51
Q

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

A

Single line wall phone 2554

52
Q

The basic digital telephone installed by cyber transport technicians ?

A

M5009

53
Q

What are the basic features of a business set?

A

Automatic prime directory number selection
On hook dialing
Listen on hold

54
Q

The fixed keys of a m5009

A

Call hold
Call release
Volume control
Dialing

55
Q

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

A

Call pickup

56
Q

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

A

Supernode or supermodel SE

Maintenance and administration area

Network modules

Peripheral modules

57
Q

What are the two most common digital voice systems

A

Supernode and Supernode SE

58
Q

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

A

DMS Core

DMS Bus

Cyber Trans (12 decks)

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