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The selective use of this feature permits restricted dialing to specific stations. A Class of Service can be
assigned to a particular station which prohibits or limits that station’s dialing ability. The following are the
available eight Classes of Service.
I\
Service Class
1’ 2 3 4 5 6.7 8
operator calls A D D D D D D D
international calls A D D
D D D D D
I
toll calls
IA IA IE
ID ID ID ID ID I
I local calls(charged)l A I A I A I A I F I D I D I D I
I I I I I I I
I
local calls A A A A A A G D
A : Allow
D : Deny
E (Service Class 3) : Only area code selected can be dialed.
F (Service Class 5) : Only Exchange code selected can be dialed.
G (Service Class 7) : Only Exchange code selected cannot be dialed.
The following should be set.
l
“Area Type Selection” on page 3-18.
l
“CO Operator Call-Boundary Class” on page 3-l 9.
l
“Toll Restriction of System Speed Dialing” on page 3-20.
l
“Allowable Exchange Code Selection” on page 3-21.
l
“Area Code Entry For Class 3” on page 3-22.
l
“Exchange Code Entry For Class 5” on page 3-23.
l
“Exchange Code Entry For Class 7” on page 3-24.
l
“Service Class Assignment of Toll Restriction” on page 3-67.
3-17