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2.2 System Configuration—Software
Feature Guide 163
2.2 System Configuration—Software
2.2.1 Class of Service (COS)
Description
Each extension is assigned a class of service (COS) number ( TRS-COS—Day/Night/Lunch [601-603]).
The following features operate differently depending on an extension's COS.
a) TRS ( 1.8.1 Toll Restriction (TRS))
b) Walking COS ( 1.8.4 Walking COS)
Conditions
• Walking COS
An extension user can make a call from an extension with a lower COS by using his or her own COS
temporarily.
User Manual References
1.2.6 Using Your Calling Privileges at Another Extension (Walking COS)