2.2 System Configuration—SoftwareFeature Guide 1692.2 System Configuration—Software2.2.1 Class of Service (COS)DescriptionEach extension is assigned a Class of Service (COS) number (→ Class of Service [602]). The followingfeatures operate differently depending on an extension's COS.a) Internal Call Block (→ 1.1.2.2 Internal Call Block)b) Call Forwarding (FWD) (→ 1.3.1.2 Call Forwarding (FWD))c) Do Not Disturb (DND) Override (→ 1.3.1.3 Do Not Disturb (DND))d) Call Pickup (→ 1.4.1.3 Call Pickup)e) Account Code Entry (→ 1.5.4.3 Account Code Entry)f) External Call Block (→ 1.5.5.3 CO Line Access)g) Executive Busy Override (→ 1.7.2 Executive Busy Override)h) Call Monitor (→ 1.7.3 Call Monitor)i) Toll Restriction (TRS) (→ 1.8.1 Toll Restriction (TRS))j) Extension Dial Lock (→ 1.8.2 Extension Dial Lock)k) Walking COS (→ 1.8.4 Walking COS)l) CO Line Call Limitation (→ 1.10.7 CO Line Call Limitation)m) Call Transfer (→ 1.11.1 Call Transfer)n) Door Open (→ 1.15.2 Door Open)o) Direct Inward System Access (DISA) (→ 1.15.6 Direct Inward System Access (DISA))p) Wireless XDP Parallel Mode (→ 1.20.3 Wireless XDP Parallel Mode)q) Station Message Detail Recording (SMDR) for Outgoing CO Line Call (→ 1.21.1 Station MessageDetail Recording (SMDR))r) Time Service Switching (→ 2.2.4 Time Service)s) Manager Features (→ 2.2.6 Manager Features)t) PT Programming (→ 2.3.2 PT Programming)Conditions• Walking COSExtension users can make a call from extensions of a less-privileged COS by using their own COStemporarily.User Manual References1.2.6 Calling without Restrictions
