ENP- Emergency Number Professional Exam
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Terms in this set (82)
Radio frequencies between 30 and 300 MHz; the VHF
VHF (very high frequency) spectrum is further divided into "high" and "low" bands
and travels farther distance.
Radio frequencies between 300 and 3,000 MHz.
UHF (ultra-high frequency) Doesn't go as far but penetrates structures w/in 25
miles. Better reception inside bldgs.
Used to conserve Radio Spectrum. Users share same
Trunked Radio
frequencies and use talk groups and share channels
, Uses only one frequency to transmit outgoing
Simplex system messages and to receive incoming message. Does not
require base equipment
Transmits the msg over more than one transmitter on
Simulcast System
the same frequency.
Digital: converted using voice coder, converts to
digital and is binary coded. visualized in squares.
Digitial Vs Analog
Analog: uses voice vibrations/variable signal.
visualized in a continuously variable signal ie: curves
Originates in one LATA & terminates in another. ie:
Inter-LATA services Longdistance. Services that can be provided by
several IXCs
LATAn(Local Access & A specific geographic area that offers local or long
Transport Area) dist services
Inter-eXchange Carrier Provides service to the public between local
(IXC) exchange on an intra or inter LATA basis
Process of connecting the calling party to the called
switching party w/out the use of dedicated transport facilities.
(ie: running wires between the two)
the local service provider building that connects the
Central Office (CO) customers to the service provider network. Connects
the customer equipment and delivers a dial tone.
End Office Switch (Class A telephone central office switch that connects
5) directly to the customer
Provides the interexchange carrier w/access to all the
end offices w/in the LATA
Acts as a buffer between diff systems
Access Tandem Connects end office when direct trunking is not
economical
They interconnect end offices, connect to other
access Tandems, provide trunk to trunk switching
intra-office within one office or office building
2025 (Actual Exam) Questions with verified
Answers (Latest Update 2025) UPDATE!!
Save
Practice questions for this set
Learn 1 /7 Study with Learn
Terms in this set (82)
Radio frequencies between 30 and 300 MHz; the VHF
VHF (very high frequency) spectrum is further divided into "high" and "low" bands
and travels farther distance.
Radio frequencies between 300 and 3,000 MHz.
UHF (ultra-high frequency) Doesn't go as far but penetrates structures w/in 25
miles. Better reception inside bldgs.
Used to conserve Radio Spectrum. Users share same
Trunked Radio
frequencies and use talk groups and share channels
, Uses only one frequency to transmit outgoing
Simplex system messages and to receive incoming message. Does not
require base equipment
Transmits the msg over more than one transmitter on
Simulcast System
the same frequency.
Digital: converted using voice coder, converts to
digital and is binary coded. visualized in squares.
Digitial Vs Analog
Analog: uses voice vibrations/variable signal.
visualized in a continuously variable signal ie: curves
Originates in one LATA & terminates in another. ie:
Inter-LATA services Longdistance. Services that can be provided by
several IXCs
LATAn(Local Access & A specific geographic area that offers local or long
Transport Area) dist services
Inter-eXchange Carrier Provides service to the public between local
(IXC) exchange on an intra or inter LATA basis
Process of connecting the calling party to the called
switching party w/out the use of dedicated transport facilities.
(ie: running wires between the two)
the local service provider building that connects the
Central Office (CO) customers to the service provider network. Connects
the customer equipment and delivers a dial tone.
End Office Switch (Class A telephone central office switch that connects
5) directly to the customer
Provides the interexchange carrier w/access to all the
end offices w/in the LATA
Acts as a buffer between diff systems
Access Tandem Connects end office when direct trunking is not
economical
They interconnect end offices, connect to other
access Tandems, provide trunk to trunk switching
intra-office within one office or office building
