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1.8 Toll Restriction (TRS)/Call Barring (Barring) Features
4)Walking COS/Verified Code Entry
( 1.8.5 Walking COS, 1.8.6 Verified Code Entry)
5)Extension Lock
Feature Guide References
1.5.5.3 Trunk Access
1.6.1.5Speed
1.9.1 Automatic Route Selection (ARS) 2.2.4 Time Service