Study Sheet 2

Question 1

What is the north american nubering plan

Answer 1

10 digir number

XXX-area code-Numbering Plan Area

XXX-CO code or number exchange code

xxxx-four digit subscriber code

Question 2

first three digits of NANP

Answer 2

Numbering Plan Area

Question 3

local number portability

Answer 3

allows customers to keep thier phone number

same for wireless customers!

mandated by telecom act of 1996

Question 4

3 trunk types

Answer 4

interswitch trunks-connect class 5

tandem switch trunk-connect classs 5 to tandems

IMT-connect two LONG DISTANCE together

Question 5

what goes inside a trunnk

Answer 5

a DS-1

Question 6

feature group trunk

Answer 6

created from divestiture

provides EQUAL ACCESS from any LD carrier to the ILEC

Question 7

3 feature trunk groups

Answer 7

A, B, D

D-adds access charges, allows equal acess, allows 1+ dialing by use of primary interconnect carrier code

Question 8

most common feature group trunk

Answer 8

feature group D

Question 9

SS-7

Answer 9

is the auxiliary network that helps establish connections between devices within the network and between networks

Question 10

in band singaling

Answer 10

signaling that rides on the same circuit as the information signal
this reduces the number of avaialble trunks as more space is needed

Question 11

out of band singaling

Answer 11

also called common cahnnel signaling

carries signaling information on a separate network running parralell with the information network

SS-7 and ISDN are 2