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3rd Year > Telephony > Flashcards

Telephony Flashcards

1
Q

a series of digits or characters that must be entered into a system a system such as a telephone or other communication terminal to gain access is known as?

A

access code

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2
Q

a location identifier enabling Messages to be sent and received to a particular person or station is known as?

A

address

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3
Q

A method of signaling where the amplitude or frequency of the electrical signal is analogus to this source is known as?

A

Analog transmission

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4
Q

A wearing board used in my girl computers and many computer is to revive connections between logic memory and input/output modules is known as

A

backplane

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5
Q

The difference in hurts between the highest and lowest frequency of a group or band of frequencies is known as?

A

bandwidth

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6
Q

Refers to the capability of fully charged battery cells to carry the power load of a system when commercial power fails and the primary sources in operative is known as?

A

Battery backup

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7
Q

A data communications transmission rates based on a number of signal level changes per 2nd regardless of the information content of those signals is known as

A

Baud rate

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8
Q

I unit of information and by unary which represents 1 of 2 States of information either a 1 or 0 as Opposed to a decimal figure is referred to as

A

bit

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9
Q

A storage device within a computer system that compensates for a difference in th rate of data flow when transmitting data from one device to another is known as

A

buffer

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10
Q

a _____ is usuallyy 8 bits and represents a single character.

A

byte

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11
Q

A printed circuit board with a special connector edge that allows the board to be plugged into a slot on a backplane as called ?

A

card

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12
Q

Subscribers to a blank that are behind the same system can All call each other as if they were extensions allowing for transferring of calls

A

Century services

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13
Q

What does COS stand for

A

Class of service

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14
Q

What does DTMF stand for

A

Dual tone multi frequency

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15
Q

A key system that replaces electro mechanical really controls with electronic devices 4 or 6 conductors per telephone replace bulky multiple cables is known as

A

EKTS

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16
Q

An independent federal agency Responsible for regulating inner state and foreign but not enter state telecommunications is known as

A

Federal com

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17
Q

A trunk connect in a subscriber’s telephone equipment to a central office other than the local central office is

A

Foreign exchange trunk

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18
Q

The term for a time period and closing of character a character group or bit group and involved in digital Carrier system is a what

A

frame

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19
Q

The number of cycles completed per unit of time measured in hertz

A

Frequency

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20
Q

Our mix signals and advantage or disadvantage with digital transmission

A

Addvantage

21
Q

What is the factor by which LEC’s determine responsibility for repair and Maintenance

A

D mark

22
Q

What is the type of signaling and telephone switching systems that uses direct current in a ground return path to indicate a subscriber’s request for service

A

Ground start

23
Q

A guideline platform for upgrading global telephone communications to a completely digital switch network simultaneously transmission of voice and data over multi plexed communication circuit is?

A

Integrated services digital network ISDN

24
Q

The connection between the public switched network and customer promise equipment and/or a generic term for firms that sell?

A

Interconnect

25
Q

To momentarily D press and release a telephone hook switch and order to signal a request for features such as conference or transfer is known as?

A

hookflash

26
Q

Cabinet which contains the control module associated with the key telephone systems Usually electro mechanical really units or elektronik printed circuit boards

A

Key service unit KSU

27
Q

One of the local telephone Exchange areas which serve to distinguish local phone services from long distance service is

A

interlata

28
Q

A switch located within a Telephone set alerts the switching he quit ment that a collar has initiated a call or that the collar as Finnish and the parties have. It operates when the user removes the handset from the telephone or returns and set to the phone

A

Hook switch

29
Q

Carriers who provide telephone service within their franchise area are known as LEC’s what does this sand for

A

Local exchange carriers

30
Q

A Junction Box on the side of a house where tip and ring connects to the outside network is known as?

A

Access point

31
Q

A device that combines 2 or more signals for transmission over the same path is known as

A

multiplexer unit MUX

32
Q

And data communication a bit added to a group of bits so that the number of ones and the group is always even or odd used on a bite by bite basis to verify the integrity of data transmissions the receiving end of a transmission must be prepared for the same type of _____ that is being sent

A

parity

33
Q

a unit used for temporary storage of data a storage element which may be written into or read out From any memory address or at any point in time is known as

A

Random access memory RAM

34
Q

A special program built into a system to control the hardware and software resources and to supervise the running of other programs is known as

A

Operating system

35
Q

Structure which is mounted to the entrance facility and/or equipment Room to guard against damage to the CO equipment from outside sources such as power surges or lightning is known as

A

Protecons

36
Q

An application of ISD and which by combining 2 or more B channels allows improved motion for video is known as

A

Video conference

37
Q

The point of access into a communication system computer network or other elektronik device is known as

A

Port

38
Q

An individual person or company who has a telephone number and their name is known as

A

Subscriber

39
Q

______Is a service where a subscriber can initiate Inner exchange communications over a dedicated _____ Trunk to any other subscriber in the National network geographically located within the distance selected by the collar the customer is not build per call but by a certain amount per month for a given number of hours of service with overtime charges at a reduced rate

A

Watts trunk

40
Q

The part of the telephone microphone which convert sound waves of the speakers into electrical energy is known as

A

Transmitter

41
Q

the part of th e telephone which converts the electrical energy back to voice is known as?

A

receiver

42
Q

Who is responsible for the invention of the telephone

A

Alexander G bell

43
Q

What are 3 elements that remain consistent with every telephone network

A

NDA, CO, end user number

44
Q

What company managed the telephone network across the US

A

AT&T

45
Q

The abbreviation FCC represents

A

Federal communications commission

46
Q

A direct connection between a switching machine and the end user’s phone or terminating device is called a What circuit

A

Line circuit

47
Q

What is the main difference with ADI D trunk compared to loop start and ground start trunks

A

PB X provides battery for the seo

48
Q

What is the actual concept behind ISDN

A

A guideline for platform for upgrading telephone communications

49
Q

Integrated service digital network is not meant to be a product or a service explain

A

A standard or procedure to a constant and proving system

3rd Year (1 decks)

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