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WorksheetsTelephone System
Total questions: 20
Worksheet time: 10mins
The telephone network is made of three major components: local loops, switching offices, and ________
handsets
POP
trunks
tandems
The carrier that handles intra-LATA services is called a __________.
XCH
POP
IXC
LEC
The services offered by the common carriers (telephone companies) inside a LATA are called ___________ services
inter-LATA services
infra-LATA services
intra-LATA services
LATA services
The telephone network has several levels of switching offices such as end offices, __________offices, and regional offices
trunk
POP
tandem
national
The services between LATAs are handled by _____________.
IXCs
XCHs
inter-LATA
intra-LATA
The _______________ is responsible for setting up voice calls in SS7
SC
SP
TUP
ST
The signaling network also includes a SCP that controls the whole operation of the network. SCP stands for ______
service center point
signal control point
signal center point
service control point
The signaling network uses nodes called STPs that receive and forward signaling messages. STP stand for ________
symbol transfer port
signal transport point
signal transfer point
signal transport port
A telephone network today can be thought of as two networks: a data transfer network and
a ________ network
switching
supervisory
signaling
packet
The user telephone or computer is connected to the SPs. SP stand for _______
signal port
system point
switch port
signal point
MTP stands for ____________
message transport point
message transfer part
message transfer point
message transport part
The protocol now used in the PSTN signaling network is called ____________.
Signaling Seventh System
System Seven Signaling
Signaling System Seven
Seventh System Signaling
Communication inside a LATA is handled by end switches and _________ switches
tandem
trunk
CO
POP
In out-of-band signaling, a portion of the ________ channel bandwidth was used for signaling; the voice bandwidth and the signaling bandwidth were separate.
signal
active
voice
in-band
The signaling network is a ____________ network involving the layers similar to those in the OSI model or Internet model.
circuit-switched
message switched
packet switched
virtual-circuit switched
In ________ signaling, same circuit can be used for both signaling and voice communication
in-bound
SS7
out-of-band
in-band
Each IXC that wants to provide inter-LATA services in a LATA must have a _____ in that LATA
XCH
point of presence
tandem
hierarchy
Complete the acronym LATA
local-area transport access
local-access transfer areas
local-area transfer access
local-access transport areas
The telephone network, at its beginning, used a _________ network with dedicated links to transfer voice communication
mesh
circuit-switched
packet-switched
star
The effective bandwidth of a telephone line being used for data transmission is __________ Hz
4 kHz
2400 Hz
8 kHz
6 kHz
