Lesson 1: Telephone Definitions Flashcards
A series of digits or characters that must be entered into a system, such as a telephone or other communication terminal to gain access, is known as:
a. codec
b. hunting
c. tandem trunking
d. access code
d. access code
A location identifier enabling messages to be sent and received to a particular person or station is known as:
a. address signaling
b. regional center
c. address
d. world zone 1
c. address
A method of signaling where the amplitude or frequency of the electrical signal is analogous to the source, is know as:
a. analog transmission
b. digital transmission
c. asynchronous transmission
d. synchronous
a. analog transmission
A wiring board used in microcomputers and minicomputers to provide connections between logic, memory, and input/output modules is known as:
a. card
b. backplane
c. switch
d. hub
b. backplane
The difference in Hertz (Hz) between the highest and lowest frequency of a group or band of frequencies is known as:
a. hertz
b. out-of-band frequency
c. in-band frequency
d. bandwidth
d. bandwidth
Refers to the capability of fully charged battery cells to carry the power load of a system when commercial power fails and the primary power source is inoperative is know as:
a. harmonic filters
b. battery backup
c. surge protecting devices (SPD’s)
d. voltage regulators
b. battery backup
A data communications transmission rate based ont he number of signal level changes per second, regardless of the information content of those signals, is known as:
a. bits per second
b. flat rate
c. baud rate
c. baud rate
A unit of information in binary (number base 2) which represents one of two states of information, either a 1 or 0, as opposed to a decimal figure, is referred to as a(n) ___?___.
bit
A storage device within a computer system that compensates for a difference in the rate of data flow when transmitting data from one device to another, is known as:
a. backplane
b. clocking
c. CPU
d. buffer
d. buffer
A(n) ___?___ is usually 8-bits and represents a single character.
Byte
A printed circuit board with a special connector edge that allows the board to be plugged into a slot on a backplane, is called a(n) ___?___.
card
Subscribers to ___?___ that are behind the same system can all call each other as if they were extensions, allowing for the transferring of calls.
centric services
What does COS stand for?
Class of service
What is the factor by which LEC’s determine responsibility for repair and maintenance?
Domarcation Point
What does DTMF stand for?
Dual Tone Multi-Frequency
Are mixed signals an advantage or disadvantage with digital transmissions?
Advantage
A key system that replaces electromechanical relay controls with electronic devices; four or six conductors per telephone replace bulky multiple cables, is known as:
a. PBX
b. FAX
c. EKTS
d. KEYS
c. EKTS
An independent federal agency responsible for regulating interstate and foreign, but not intrastate, telecommunications is known as ___?___.
FCC
A trunk connecting a subscriber’s telephone equipment to a central office other than the local central office, is:
a. tie trunk
b. interoffice trunk
c. one-way trunk
d. foreign exchange trunk
d. foreign exchange trunk
The term for a time period enclosing a character, a character group, or bit group involved in a digital carrier system, is a:
a. frame
b. bit
c. byte
d. packet
a. frame
The number of cycles completed per unit of time, measured in Hertz, is:
a. hertz (Hz)
b. frequency
c. kilohertz
d. analog signal
b. frequency
What is a type of signaling in telephone switching systems that uses direct current in a ground return path to indicate a subscriber’s request of serice?
Ground start
A guideline platform for upgrading global telephone communications to a completely digital switched network, simultaneous transmission of voice and data over multiplexed communications circuits, is:
a. digital transmission
b. analog transmission
c. T-1 line
d. Integrated Services Digital Network (ISDN)
d. Integrated Services Digital Network (ISDN)
The connection between the public switched network and customer premises equipment and/or a generic term for firms that sell, install and service subscriber equipment, is known as ___?___.
Interconnect companies
To momentarily depress and release a telephone hookswitch in order to signal a request for a feature such as conference or transfer, is known as ___?___.
Hook flash
A switch located within a telephone set alerts the switching equipment that a caller has initiated a call or that the caller has finished and the parties have disconnected. It operates when the user removes the handset from the phone (off-hook) or returns the handset to the phone (on-hook), is known as:
a. hookswitch
b. packet switching
c. switching office
d. local exchange
a. hookswitch
A cabinet which contains the control modules associated with the key telephone systems; usually electromechanical relay units or electrical printed circuit cards.
a. Key Telephone System (KTS)
b. Electronic Key Telephone System (EKTS)
c. Key Service Unit (KSU)
d. Key System Unit (KSU)
c. Key Service Unit (KSU)
One of the local telephone exchange areas which serves to distinguish local phone service from long-distance service is:
a. InterLATA
b. IntraLATA
c. Local Area Network (LAN)
d. Local Access and Transport Area (LATA)
d. Local Access and Transport Area (LATA)
Carriers who provide telephone service within their franchised area are known as LEC’s. What does LEC stand for?
Local Exchange Carrier
A junction box on the side of a house where TIP and Ring connect to the outside network is known as __?__.
Network Interface Device (NID)
A device that combines two or more signals for transmission over the same path, is known as:
a. multiplexer unit (MUX)
b. mutiplex
c. multi-frequency (MF)
d. sampling
a. multiplexer unit (MUX)
In data communication, a bit added to the group of bits so that the number of 1’s in a group is always even or odd. Used on a byte by byte basis to verify the integrity of data transmission. The receiving end of the transmission must be prepared for the same type of ___ (odd/even) that is being sent.
a. bit
b. parity
c. packet
d. binary digit
b. parity
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. CPU
b. Main frame
c. Minicomputer
d. RAM (Random Access Memory)
d. RAM (Random Access Memory)
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. transmission system
b. operating system
c. signaling system
d. direct inward system access
b. operating system
A structure which is mounted in the entrance facility and/or equipment room to guard against damage to the CO equipment from outside sources such as power surge or lightning, is known as:
Protectors
This provides centralized telecommunications services to tenants in a building or complex. It also exists in large shopping centers, high rise business offices, colleges, and some apartment and condo complexes, is known as:
Shared Tenant Service
An application of ISDN which, by combining two or more B channels, allows improved motion for video, is known as:
Video conferencing
The point of access into a communications system, computer, network, or other electronic device, is known as:
a. card
b. slot
c. terminal
d. port
d. port
An individual person or company who has a telephone number in their name is known as __?__
Subscriber
__?__ is a service where a subscriber can initiate interexchange communications over a dedicated __?__ trunk to any other subscriber in the national network geographically located within the distance selected by the caller. The customer is not billed per call, but by a certain amount per month for a given number of hours of service, with overtime charges at a reduced rate.
Wide Area Telecommunication Services (WATS)
The part of the telephone microphone which converts sound waves of the speakers into electrical energy, is known as the __?__.
Transmitter
The part of the telephone which converts the electrical energy back to voice, is known as the __?__.
Receiver
A type of transmission facility that uses radio frequencies between 1,000 to 20,000 megahertz. Extensively used for TV transmission and by some long distance carriers such as AT&T , is known as:
Microwave
Name three types of protectors.
fuse, air gap, rare gas
A method of organizing speech samples into a single communication path by interleaving them into time slots is known as:
Time division multiplexing
