know base 4 Flashcards
What is the most common type of trunk used to connect a long distance company switch to a local switch, tandem, or end office ?
feature group D
The channel connection between two central office switches is called a(n) ________.
trunk
What kind of circuits are more commonly used for telephone networks in the United States; the T1, DS3, OC-48?
T1
The class _______ switch is one of the most complex digital switches in the network because it is responsible for all line-side terminations.
5
The types of switches that the class 3 switch switches trunks between are:
class4, class 5, intenational gateway
Who determines the rules within a LATA?
PUC
What is NOT the purpose of feature group D trunk?
Ensures the caller is connected to the correct international gateway switch
Are calls traveling within a LATA are charged the same as calls traveling across LATAs?
no
When you pick up your telephone and hear the dial tone, what type of switch are you interfacing with?
class 5
What does Local number portability (LNP) mean?
It means you can keep your old phone number even if you change providers
The Modified Final Judgment in 1982 determined that every area within the United States resides within a specific _________________.
LATA
The type of signaling found on telephone lines that initiates dial tone when the handset is picked up and the circuit (loop) is closed is called:
Loop start signaling
Signaling is responsible for:
gathering information
None of the listed choices
establishing connections
All of the listed choices
No answer text provided.
Loop start signaling and ground start signaling tell the switch that a telephone is ________-hook.
off
Birds can sit on a power line without being electrocuted because they are not ________ and, therefore, are not creating a complete circuit.
grounded
